diff --git a/classes/cargo.bbclass b/classes/cargo.bbclass
index 61f1324..9bbc49d 100644
--- a/classes/cargo.bbclass
+++ b/classes/cargo.bbclass
@@ -1,13 +1,13 @@
-# add crate fetch support
-inherit crate-fetch
-inherit rust-common
+##
+## Purpose:
+## This class is used by any recipes that are built using
+## Cargo.
+
+inherit cargo_common
 
 # the binary we will use
 CARGO = "cargo"
 
-# Where we download our registry and dependencies to
-export CARGO_HOME = "${WORKDIR}/cargo_home"
-
 # We need cargo to compile for the target
 BASEDEPENDS_append = " cargo-native"
 
@@ -22,66 +22,22 @@ B = "${S}"
 # where the issue occured
 export RUST_BACKTRACE = "1"
 
-# The pkg-config-rs library used by cargo build scripts disables itself when
-# cross compiling unless this is defined. We set up pkg-config appropriately
-# for cross compilation, so tell it we know better than it.
-export PKG_CONFIG_ALLOW_CROSS = "1"
-
-cargo_do_configure () {
-	mkdir -p ${CARGO_HOME}
-	echo "paths = [" > ${CARGO_HOME}/config
-
-	for p in ${EXTRA_OECARGO_PATHS}; do
-		printf "\"%s\"\n" "$p"
-	done | sed -e 's/$/,/' >> ${CARGO_HOME}/config
-	echo "]" >> ${CARGO_HOME}/config
-
-	# Point cargo at our local mirror of the registry
-	cat <<- EOF >> ${CARGO_HOME}/config
-	[source.bitbake]
-	directory = "${CARGO_HOME}/bitbake"
-
-	[source.crates-io]
-	replace-with = "bitbake"
-	local-registry = "/nonexistant"
-	EOF
-
-	echo "[target.${HOST_SYS}]" >> ${CARGO_HOME}/config
-	echo "linker = '${RUST_TARGET_CCLD}'" >> ${CARGO_HOME}/config
-	if [ "${HOST_SYS}" != "${BUILD_SYS}" ]; then
-		echo "[target.${BUILD_SYS}]" >> ${CARGO_HOME}/config
-		echo "linker = '${RUST_BUILD_CCLD}'" >> ${CARGO_HOME}/config
-	fi
-}
-
 RUSTFLAGS ??= ""
 CARGO_BUILD_FLAGS = "-v --target ${HOST_SYS} --release"
+RUST_TARGET_PATH = "${STAGING_LIBDIR_NATIVE}/rustlib"
 
 # This is based on the content of CARGO_BUILD_FLAGS and generally will need to
 # change if CARGO_BUILD_FLAGS changes.
 CARGO_TARGET_SUBDIR="${HOST_SYS}/release"
 oe_cargo_build () {
 	export RUSTFLAGS="${RUSTFLAGS}"
-	bbnote "cargo = $(which cargo)"
-	bbnote "rustc = $(which rustc)"
+	export RUST_TARGET_PATH="${RUST_TARGET_PATH}"
+	bbnote "cargo = $(which ${CARGO})"
+	bbnote "rustc = $(which ${RUSTC})"
 	bbnote "${CARGO} build ${CARGO_BUILD_FLAGS} $@"
 	"${CARGO}" build ${CARGO_BUILD_FLAGS} "$@"
 }
 
-oe_cargo_fix_env () {
-	export CC="${RUST_TARGET_CC}"
-	export CFLAGS="${CFLAGS}"
-	export AR="${AR}"
-	export TARGET_CC="${RUST_TARGET_CC}"
-	export TARGET_CFLAGS="${CFLAGS}"
-	export TARGET_AR="${AR}"
-	export HOST_CC="${RUST_BUILD_CC}"
-	export HOST_CFLAGS="${BUILD_CFLAGS}"
-	export HOST_AR="${BUILD_AR}"
-}
-
-EXTRA_OECARGO_PATHS ??= ""
-
 cargo_do_compile () {
 	oe_cargo_fix_env
 	oe_cargo_build
@@ -105,4 +61,4 @@ cargo_do_install () {
 	fi
 }
 
-EXPORT_FUNCTIONS do_configure do_compile do_install
+EXPORT_FUNCTIONS do_compile do_install
diff --git a/classes/cargo_common.bbclass b/classes/cargo_common.bbclass
new file mode 100644
index 0000000..9958265
--- /dev/null
+++ b/classes/cargo_common.bbclass
@@ -0,0 +1,70 @@
+##
+## Purpose:
+## This class is to support building with cargo. It
+## must be different than cargo.bbclass because Rust
+## now builds with Cargo but cannot use cargo.bbclass
+## due to dependencies and assumptions in cargo.bbclass
+## that Rust & Cargo are already installed. So this
+## is used by cargo.bbclass and Rust
+##
+
+# add crate fetch support
+inherit crate-fetch
+inherit rust-common
+
+# Where we download our registry and dependencies to
+export CARGO_HOME = "${WORKDIR}/cargo_home"
+
+# The pkg-config-rs library used by cargo build scripts disables itself when
+# cross compiling unless this is defined. We set up pkg-config appropriately
+# for cross compilation, so tell it we know better than it.
+export PKG_CONFIG_ALLOW_CROSS = "1"
+
+cargo_common_do_configure () {
+	mkdir -p ${CARGO_HOME}
+	echo "paths = [" > ${CARGO_HOME}/config
+
+	for p in ${EXTRA_OECARGO_PATHS}; do
+		printf "\"%s\"\n" "$p"
+	done | sed -e 's/$/,/' >> ${CARGO_HOME}/config
+	echo "]" >> ${CARGO_HOME}/config
+
+	# Point cargo at our local mirror of the registry
+	cat <<- EOF >> ${CARGO_HOME}/config
+	[source.bitbake]
+	directory = "${CARGO_HOME}/bitbake"
+
+	[source.crates-io]
+	replace-with = "bitbake"
+	local-registry = "/nonexistant"
+	EOF
+
+	echo "[target.${HOST_SYS}]" >> ${CARGO_HOME}/config
+	echo "linker = '${RUST_TARGET_CCLD}'" >> ${CARGO_HOME}/config
+	if [ "${HOST_SYS}" != "${BUILD_SYS}" ]; then
+		echo "[target.${BUILD_SYS}]" >> ${CARGO_HOME}/config
+		echo "linker = '${RUST_BUILD_CCLD}'" >> ${CARGO_HOME}/config
+	fi
+}
+
+oe_cargo_fix_env () {
+	export CC="${RUST_TARGET_CC}"
+	export CXX="${RUST_TARGET_CXX}"
+	export CFLAGS="${CFLAGS}"
+	export CXXFLAGS="${CXXFLAGS}"
+	export AR="${AR}"
+	export TARGET_CC="${RUST_TARGET_CC}"
+	export TARGET_CXX="${RUST_TARGET_CXX}"
+	export TARGET_CFLAGS="${CFLAGS}"
+	export TARGET_CFLAGS="${CXXFLAGS}"
+	export TARGET_AR="${AR}"
+	export HOST_CC="${RUST_BUILD_CC}"
+	export HOST_CXX="${RUST_BUILD_CXX}"
+	export HOST_CFLAGS="${BUILD_CFLAGS}"
+	export HOST_CXXFLAGS="${BUILD_CXXFLAGS}"
+	export HOST_AR="${BUILD_AR}"
+}
+
+EXTRA_OECARGO_PATHS ??= ""
+
+EXPORT_FUNCTIONS do_configure
diff --git a/classes/rust-common.bbclass b/classes/rust-common.bbclass
index f79c52e..b76e2d9 100644
--- a/classes/rust-common.bbclass
+++ b/classes/rust-common.bbclass
@@ -5,7 +5,7 @@ FILES_${PN}-dev += "${rustlibdir}/*.rlib"
 FILES_${PN}-dbg += "${rustlibdir}/.debug"
 
 RUSTLIB = "-L ${STAGING_LIBDIR}/rust"
-RUSTFLAGS += "-C rpath ${RUSTLIB}"
+RUSTFLAGS += "${RUSTLIB}"
 RUSTLIB_DEP ?= "libstd-rs"
 
 # Responsible for taking Yocto triples and converting it to Rust triples
@@ -74,9 +74,11 @@ RUST_TARGET_SYS = "${@rust_base_triple(d, 'TARGET')}"
 # use those commands based on the prefix.
 WRAPPER_DIR = "${WORKDIR}/wrapper"
 RUST_BUILD_CC = "${WRAPPER_DIR}/build-rust-cc"
+RUST_BUILD_CXX = "${WRAPPER_DIR}/build-rust-cxx"
 RUST_BUILD_CCLD = "${WRAPPER_DIR}/build-rust-ccld"
 RUST_BUILD_AR = "${WRAPPER_DIR}/build-rust-ar"
 RUST_TARGET_CC = "${WRAPPER_DIR}/target-rust-cc"
+RUST_TARGET_CXX = "${WRAPPER_DIR}/target-rust-cxx"
 RUST_TARGET_CCLD = "${WRAPPER_DIR}/target-rust-ccld"
 RUST_TARGET_AR = "${WRAPPER_DIR}/target-rust-ar"
 
@@ -97,15 +99,19 @@ create_wrapper () {
 do_rust_create_wrappers () {
 	mkdir -p "${WRAPPER_DIR}"
 
-	# Yocto Build / Rust Host compiler
+	# Yocto Build / Rust Host C compiler
 	create_wrapper "${RUST_BUILD_CC}" "${BUILD_CC}"
+	# Yocto Build / Rust Host C++ compiler
+	create_wrapper "${RUST_BUILD_CXX}" "${BUILD_CXX}"
 	# Yocto Build / Rust Host linker
 	create_wrapper "${RUST_BUILD_CCLD}" "${BUILD_CCLD}" "${BUILD_LDFLAGS}"
 	# Yocto Build / Rust Host archiver
 	create_wrapper "${RUST_BUILD_AR}" "${BUILD_AR}"
 
-	# Yocto Target / Rust Target compiler
+	# Yocto Target / Rust Target C compiler
 	create_wrapper "${RUST_TARGET_CC}" "${CC}"
+	# Yocto Target / Rust Target C++ compiler
+	create_wrapper "${RUST_TARGET_CXX}" "${CXX}"
 	# Yocto Target / Rust Target linker
 	create_wrapper "${RUST_TARGET_CCLD}" "${CCLD}" "${LDFLAGS}"
 	# Yocto Target / Rust Target archiver
diff --git a/recipes-devtools/cargo/cargo-0.16.0.inc b/recipes-devtools/cargo/cargo-0.16.0.inc
new file mode 100644
index 0000000..04d1723
--- /dev/null
+++ b/recipes-devtools/cargo/cargo-0.16.0.inc
@@ -0,0 +1,11 @@
+CARGO_SNAPSHOT = "2016-09-01/cargo-nightly-x86_64-unknown-linux-gnu.tar.gz;downloadfilename=cargo-nightly-x86_64-unknown-linux-gnu-2016-09-01.tar.gz"
+SRC_URI[cargo-snapshot.md5sum] = "d41ebf79290a7c9c9e5df87cb27e5091"
+SRC_URI[cargo-snapshot.sha256sum] = "365e5cad79512d244b8ced32f8e5b86a710fc6c17f0d0f5f744b8058ef6dc756"
+
+SRC_URI += "\
+	https://static.rust-lang.org/cargo-dist/${CARGO_SNAPSHOT};name=cargo-snapshot \
+"
+
+# When building cargo-native we don't have a built cargo to use so we must use
+# the snapshot to bootstrap the build of cargo
+CARGO_class-native = "${WORKDIR}/cargo-nightly-${RUST_BUILD_SYS}/cargo/bin/cargo"
diff --git a/recipes-devtools/cargo/cargo-0.21.0.inc b/recipes-devtools/cargo/cargo-0.21.0.inc
new file mode 100644
index 0000000..367ad21
--- /dev/null
+++ b/recipes-devtools/cargo/cargo-0.21.0.inc
@@ -0,0 +1,11 @@
+CARGO_SNAPSHOT = "cargo-0.20.0-${RUST_BUILD_SYS}"
+SRC_URI[cargo-snapshot.md5sum] = "63aa861b029eec9f559f4fb5a10c287d"
+SRC_URI[cargo-snapshot.sha256sum] = "a677d13b01d00ad13edf75c7d1b484421c7fc09338bf9ed6d456b4685bb42ed1"
+
+SRC_URI += "\
+	https://static.rust-lang.org/dist/${CARGO_SNAPSHOT}.tar.gz;name=cargo-snapshot \
+"
+
+# When building cargo-native we don't have a built cargo to use so we must use
+# the snapshot to bootstrap the build of cargo
+CARGO_class-native = "${WORKDIR}/${CARGO_SNAPSHOT}/cargo/bin/cargo"
diff --git a/recipes-devtools/cargo/cargo-snapshot.inc b/recipes-devtools/cargo/cargo-snapshot.inc
deleted file mode 100644
index 8f3c28a..0000000
--- a/recipes-devtools/cargo/cargo-snapshot.inc
+++ /dev/null
@@ -1,4 +0,0 @@
-
-CARGO_SNAPSHOT = "2016-09-01/cargo-nightly-x86_64-unknown-linux-gnu.tar.gz;downloadfilename=cargo-nightly-x86_64-unknown-linux-gnu-2016-09-01.tar.gz"
-SRC_URI[md5sum] = "d41ebf79290a7c9c9e5df87cb27e5091"
-SRC_URI[sha256sum] = "365e5cad79512d244b8ced32f8e5b86a710fc6c17f0d0f5f744b8058ef6dc756"
diff --git a/recipes-devtools/cargo/cargo.inc b/recipes-devtools/cargo/cargo.inc
index bccb751..2cccef2 100644
--- a/recipes-devtools/cargo/cargo.inc
+++ b/recipes-devtools/cargo/cargo.inc
@@ -1,56 +1,12 @@
-inherit cargo
-inherit patch
-
-SUMMARY = "Cargo downloads your Rust project's dependencies and builds your project"
-HOMEPAGE = "http://crates.io"
 SECTION = "devel"
-LICENSE = "MIT | Apache-2.0"
 
 DEPENDS = "openssl zlib libgit2 curl ca-certificates libssh2"
 
-SRC_URI = "\
-	http://static-rust-lang-org.s3.amazonaws.com/cargo-dist/${CARGO_SNAPSHOT} \
+LIC_FILES_CHKSUM += " \
+file://LICENSE-THIRD-PARTY;md5=892ea68b169e69cfe75097fc38a15b56 \
 "
 
-B = "${S}"
-
 # Used in libgit2-sys's build.rs, needed for pkg-config to be used
 export LIBGIT2_SYS_USE_PKG_CONFIG = "1"
 
-# cargo's configure doesn't recognize --disable-static, so remove it.
-DISABLE_STATIC = ""
-
-do_configure () {
-	"${S}/configure" \
-		"--prefix=${prefix}"			\
-		"--build=${BUILD_SYS}"			\
-		"--host=${HOST_SYS}"			\
-		"--target=${TARGET_SYS}"		\
-		"--localstatedir=${localstatedir}"	\
-		"--sysconfdir=${sysconfdir}"		\
-		"--datadir=${datadir}"			\
-		"--infodir=${infodir}"			\
-		"--mandir=${mandir}"			\
-		"--libdir=${libdir}"			\
-		"--disable-verify-install"		\
-		${EXTRA_OECONF} \
-		|| die "Could not configure cargo"
-
-	cargo_do_configure
-}
-
-do_compile () {
-	oe_cargo_fix_env
-
-	rm -rf target/snapshot
-	mkdir -p target
-	cp -R ${WORKDIR}/cargo-nightly-x86_64-unknown-linux-gnu/cargo target/snapshot
-
-	oe_runmake VERBOSE=1
-}
-
-do_install () {
-	oe_runmake prepare-image-${TARGET_SYS} IMGDIR_${TARGET_SYS}="${D}${prefix}"
-}
-
 BBCLASSEXTEND = "native"
diff --git a/recipes-devtools/cargo/cargo_0.16.0.bb b/recipes-devtools/cargo/cargo_0.16.0.bb
index 47d447d..8845982 100644
--- a/recipes-devtools/cargo/cargo_0.16.0.bb
+++ b/recipes-devtools/cargo/cargo_0.16.0.bb
@@ -1,85 +1,103 @@
-require cargo-snapshot.inc
-require cargo.inc
+# Auto-Generated by cargo-bitbake 0.3.8
+#
+inherit cargo
 
-EXTRA_OECONF += "--cargo=${WORKDIR}/cargo-nightly-x86_64-unknown-linux-gnu/cargo/bin/cargo"
+# If this is git based prefer versioned ones if they exist
+# DEFAULT_PREFERENCE = "-1"
 
+# how to get cargo could be as easy as but default to a git checkout:
+# SRC_URI += "crate://crates.io/cargo/0.16.0"
+SRC_URI += "git://git@github.com/rust-lang/cargo.git;protocol=https;branch=rust-1.15.1"
+SRCREV = "6e0c18cccc8b0c06fba8a8d76486f81a792fb420"
+S = "${WORKDIR}/git"
+CARGO_SRC_DIR=""
+
+
+# please note if you have entries that do not begin with crate://
+# you must change them to how that package can be fetched
 SRC_URI += " \
-    git://github.com/rust-lang/cargo.git;protocol=https;name=cargo;branch=rust-1.15.1 \
-    crate://crates.io/advapi32-sys/0.2.0 \
-    crate://crates.io/aho-corasick/0.5.3 \
-    crate://crates.io/bitflags/0.7.0 \
-    crate://crates.io/bufstream/0.1.2 \
-    crate://crates.io/cfg-if/0.1.0 \
-    crate://crates.io/cmake/0.1.19 \
-    crate://crates.io/crossbeam/0.2.10 \
-    crate://crates.io/curl-sys/0.3.6 \
-    crate://crates.io/curl/0.4.1 \
-    crate://crates.io/docopt/0.6.86 \
-    crate://crates.io/env_logger/0.3.5 \
-    crate://crates.io/filetime/0.1.10 \
-    crate://crates.io/flate2/0.2.14 \
-    crate://crates.io/fs2/0.3.0 \
-    crate://crates.io/gcc/0.3.39 \
-    crate://crates.io/gdi32-sys/0.2.0 \
-    crate://crates.io/git2-curl/0.7.0 \
-    crate://crates.io/git2/0.6.3 \
-    crate://crates.io/glob/0.2.11 \
-    crate://crates.io/hamcrest/0.1.1 \
-    crate://crates.io/idna/0.1.0 \
-    crate://crates.io/kernel32-sys/0.2.2 \
-    crate://crates.io/lazy_static/0.2.2 \
-    crate://crates.io/libc/0.2.18 \
-    crate://crates.io/libgit2-sys/0.6.5 \
-    crate://crates.io/libssh2-sys/0.2.4 \
-    crate://crates.io/libz-sys/1.0.10 \
-    crate://crates.io/log/0.3.6 \
-    crate://crates.io/matches/0.1.4 \
-    crate://crates.io/memchr/0.1.11 \
-    crate://crates.io/miniz-sys/0.1.7 \
-    crate://crates.io/miow/0.1.3 \
-    crate://crates.io/net2/0.2.26 \
-    crate://crates.io/num-bigint/0.1.35 \
-    crate://crates.io/num-complex/0.1.35 \
-    crate://crates.io/num-integer/0.1.32 \
-    crate://crates.io/num-iter/0.1.32 \
-    crate://crates.io/num-rational/0.1.35 \
-    crate://crates.io/num-traits/0.1.36 \
-    crate://crates.io/num/0.1.36 \
-    crate://crates.io/num_cpus/1.1.0 \
-    crate://crates.io/openssl-probe/0.1.0 \
-    crate://crates.io/openssl-sys/0.9.1 \
-    crate://crates.io/openssl/0.9.1 \
-    crate://crates.io/pkg-config/0.3.8 \
-    crate://crates.io/psapi-sys/0.1.0 \
-    crate://crates.io/rand/0.3.14 \
-    crate://crates.io/regex-syntax/0.3.9 \
-    crate://crates.io/regex/0.1.80 \
-    crate://crates.io/rustc-serialize/0.3.21 \
-    crate://crates.io/semver-parser/0.6.1 \
-    crate://crates.io/semver/0.5.1 \
-    crate://crates.io/strsim/0.5.1 \
-    crate://crates.io/tar/0.4.9 \
-    crate://crates.io/tempdir/0.3.5 \
-    crate://crates.io/term/0.4.4 \
-    crate://crates.io/thread-id/2.0.0 \
-    crate://crates.io/thread_local/0.2.7 \
-    crate://crates.io/toml/0.2.1 \
-    crate://crates.io/unicode-bidi/0.2.3 \
-    crate://crates.io/unicode-normalization/0.1.2 \
-    crate://crates.io/url/1.2.3 \
-    crate://crates.io/user32-sys/0.2.0 \
-    crate://crates.io/utf8-ranges/0.1.3 \
-    crate://crates.io/winapi-build/0.1.1 \
-    crate://crates.io/winapi/0.2.8 \
-    crate://crates.io/ws2_32-sys/0.2.1 \
+crate://crates.io/advapi32-sys/0.2.0 \
+crate://crates.io/aho-corasick/0.5.3 \
+crate://crates.io/bitflags/0.7.0 \
+crate://crates.io/bufstream/0.1.2 \
+crate://crates.io/cfg-if/0.1.0 \
+crate://crates.io/cmake/0.1.19 \
+crate://crates.io/crossbeam/0.2.10 \
+crate://crates.io/curl-sys/0.3.6 \
+crate://crates.io/curl/0.4.1 \
+crate://crates.io/docopt/0.6.86 \
+crate://crates.io/env_logger/0.3.5 \
+crate://crates.io/filetime/0.1.10 \
+crate://crates.io/flate2/0.2.14 \
+crate://crates.io/fs2/0.3.0 \
+crate://crates.io/gcc/0.3.39 \
+crate://crates.io/gdi32-sys/0.2.0 \
+crate://crates.io/git2-curl/0.7.0 \
+crate://crates.io/git2/0.6.3 \
+crate://crates.io/glob/0.2.11 \
+crate://crates.io/hamcrest/0.1.1 \
+crate://crates.io/idna/0.1.0 \
+crate://crates.io/kernel32-sys/0.2.2 \
+crate://crates.io/lazy_static/0.2.2 \
+crate://crates.io/libc/0.2.18 \
+crate://crates.io/libgit2-sys/0.6.5 \
+crate://crates.io/libssh2-sys/0.2.4 \
+crate://crates.io/libz-sys/1.0.10 \
+crate://crates.io/log/0.3.6 \
+crate://crates.io/matches/0.1.4 \
+crate://crates.io/memchr/0.1.11 \
+crate://crates.io/miniz-sys/0.1.7 \
+crate://crates.io/miow/0.1.3 \
+crate://crates.io/net2/0.2.26 \
+crate://crates.io/num-bigint/0.1.35 \
+crate://crates.io/num-complex/0.1.35 \
+crate://crates.io/num-integer/0.1.32 \
+crate://crates.io/num-iter/0.1.32 \
+crate://crates.io/num-rational/0.1.35 \
+crate://crates.io/num-traits/0.1.36 \
+crate://crates.io/num/0.1.36 \
+crate://crates.io/num_cpus/1.1.0 \
+crate://crates.io/openssl-probe/0.1.0 \
+crate://crates.io/openssl-sys/0.9.1 \
+crate://crates.io/openssl/0.9.1 \
+crate://crates.io/pkg-config/0.3.8 \
+crate://crates.io/psapi-sys/0.1.0 \
+crate://crates.io/rand/0.3.14 \
+crate://crates.io/regex-syntax/0.3.9 \
+crate://crates.io/regex/0.1.80 \
+crate://crates.io/rustc-serialize/0.3.21 \
+crate://crates.io/semver-parser/0.6.1 \
+crate://crates.io/semver/0.5.1 \
+crate://crates.io/strsim/0.5.1 \
+crate://crates.io/tar/0.4.9 \
+crate://crates.io/tempdir/0.3.5 \
+crate://crates.io/term/0.4.4 \
+crate://crates.io/thread-id/2.0.0 \
+crate://crates.io/thread_local/0.2.7 \
+crate://crates.io/toml/0.2.1 \
+crate://crates.io/unicode-bidi/0.2.3 \
+crate://crates.io/unicode-normalization/0.1.2 \
+crate://crates.io/url/1.2.3 \
+crate://crates.io/user32-sys/0.2.0 \
+crate://crates.io/utf8-ranges/0.1.3 \
+crate://crates.io/winapi-build/0.1.1 \
+crate://crates.io/winapi/0.2.8 \
+crate://crates.io/ws2_32-sys/0.2.1 \
 "
 
-SRCREV_cargo = "6e0c18cccc8b0c06fba8a8d76486f81a792fb420"
 
-S = "${WORKDIR}/git"
 
 LIC_FILES_CHKSUM=" \
-    file://LICENSE-MIT;md5=362255802eb5aa87810d12ddf3cfedb4 \
-    file://LICENSE-APACHE;md5=1836efb2eb779966696f473ee8540542 \
-    file://LICENSE-THIRD-PARTY;md5=892ea68b169e69cfe75097fc38a15b56 \
+file://LICENSE-MIT;md5=362255802eb5aa87810d12ddf3cfedb4 \
+file://LICENSE-APACHE;md5=1836efb2eb779966696f473ee8540542 \
 "
+
+SUMMARY = "Cargo, a package manager for Rust."
+HOMEPAGE = "https://crates.io"
+LICENSE = "MIT | Apache-2.0"
+
+# includes this file if it exists but does not fail
+# this is useful for anything you may want to override from
+# what cargo-bitbake generates.
+include cargo-${PV}.inc
+include cargo.inc
diff --git a/recipes-devtools/cargo/cargo_0.21.0.bb b/recipes-devtools/cargo/cargo_0.21.0.bb
new file mode 100644
index 0000000..9f6bc7c
--- /dev/null
+++ b/recipes-devtools/cargo/cargo_0.21.0.bb
@@ -0,0 +1,136 @@
+# Auto-Generated by cargo-bitbake 0.3.8
+#
+inherit cargo
+
+# If this is git based prefer versioned ones if they exist
+# DEFAULT_PREFERENCE = "-1"
+
+# how to get cargo could be as easy as but default to a git checkout:
+# SRC_URI += "crate://crates.io/cargo/0.21.0"
+SRC_URI += "git://git@github.com/rust-lang/cargo.git;protocol=ssh;branch=rust-1.20.0"
+SRCREV = "5b4b8b2ae3f6a884099544ce66dbb41626110ece"
+S = "${WORKDIR}/git"
+CARGO_SRC_DIR=""
+
+
+# please note if you have entries that do not begin with crate://
+# you must change them to how that package can be fetched
+SRC_URI += " \
+crate://crates.io/advapi32-sys/0.2.0 \
+crate://crates.io/aho-corasick/0.5.3 \
+crate://crates.io/aho-corasick/0.6.3 \
+crate://crates.io/atty/0.2.2 \
+crate://crates.io/backtrace-sys/0.1.11 \
+crate://crates.io/backtrace/0.3.2 \
+crate://crates.io/bitflags/0.9.1 \
+crate://crates.io/bufstream/0.1.3 \
+crate://crates.io/cfg-if/0.1.2 \
+crate://crates.io/cmake/0.1.24 \
+crate://crates.io/crossbeam/0.2.10 \
+crate://crates.io/curl-sys/0.3.14 \
+crate://crates.io/curl/0.4.7 \
+crate://crates.io/dbghelp-sys/0.2.0 \
+crate://crates.io/docopt/0.8.1 \
+crate://crates.io/dtoa/0.4.1 \
+crate://crates.io/env_logger/0.4.3 \
+crate://crates.io/error-chain/0.11.0-rc.2 \
+crate://crates.io/filetime/0.1.10 \
+crate://crates.io/flate2/0.2.19 \
+crate://crates.io/foreign-types/0.2.0 \
+crate://crates.io/fs2/0.4.2 \
+crate://crates.io/gcc/0.3.51 \
+crate://crates.io/git2-curl/0.7.0 \
+crate://crates.io/git2/0.6.6 \
+crate://crates.io/glob/0.2.11 \
+crate://crates.io/hamcrest/0.1.1 \
+crate://crates.io/hex/0.2.0 \
+crate://crates.io/idna/0.1.2 \
+crate://crates.io/itoa/0.3.1 \
+crate://crates.io/jobserver/0.1.6 \
+crate://crates.io/kernel32-sys/0.2.2 \
+crate://crates.io/lazy_static/0.2.8 \
+crate://crates.io/libc/0.2.25 \
+crate://crates.io/libgit2-sys/0.6.12 \
+crate://crates.io/libssh2-sys/0.2.6 \
+crate://crates.io/libz-sys/1.0.16 \
+crate://crates.io/log/0.3.8 \
+crate://crates.io/matches/0.1.6 \
+crate://crates.io/memchr/0.1.11 \
+crate://crates.io/memchr/1.0.1 \
+crate://crates.io/miniz-sys/0.1.9 \
+crate://crates.io/miow/0.2.1 \
+crate://crates.io/net2/0.2.29 \
+crate://crates.io/num-bigint/0.1.39 \
+crate://crates.io/num-complex/0.1.38 \
+crate://crates.io/num-integer/0.1.34 \
+crate://crates.io/num-iter/0.1.33 \
+crate://crates.io/num-rational/0.1.38 \
+crate://crates.io/num-traits/0.1.39 \
+crate://crates.io/num/0.1.39 \
+crate://crates.io/num_cpus/1.6.2 \
+crate://crates.io/openssl-probe/0.1.1 \
+crate://crates.io/openssl-sys/0.9.14 \
+crate://crates.io/openssl/0.9.14 \
+crate://crates.io/percent-encoding/1.0.0 \
+crate://crates.io/pkg-config/0.3.9 \
+crate://crates.io/psapi-sys/0.1.0 \
+crate://crates.io/quote/0.3.15 \
+crate://crates.io/rand/0.3.15 \
+crate://crates.io/regex-syntax/0.3.9 \
+crate://crates.io/regex-syntax/0.4.1 \
+crate://crates.io/regex/0.1.80 \
+crate://crates.io/regex/0.2.2 \
+crate://crates.io/rustc-demangle/0.1.4 \
+crate://crates.io/rustc-serialize/0.3.24 \
+crate://crates.io/scoped-tls/0.1.0 \
+crate://crates.io/semver-parser/0.7.0 \
+crate://crates.io/semver/0.7.0 \
+crate://crates.io/serde/1.0.9 \
+crate://crates.io/serde_derive/1.0.9 \
+crate://crates.io/serde_derive_internals/0.15.1 \
+crate://crates.io/serde_ignored/0.0.3 \
+crate://crates.io/serde_json/1.0.2 \
+crate://crates.io/shell-escape/0.1.3 \
+crate://crates.io/socket2/0.2.1 \
+crate://crates.io/strsim/0.6.0 \
+crate://crates.io/syn/0.11.11 \
+crate://crates.io/synom/0.11.3 \
+crate://crates.io/tar/0.4.13 \
+crate://crates.io/tempdir/0.3.5 \
+crate://crates.io/termcolor/0.3.2 \
+crate://crates.io/thread-id/2.0.0 \
+crate://crates.io/thread_local/0.2.7 \
+crate://crates.io/thread_local/0.3.4 \
+crate://crates.io/toml/0.4.2 \
+crate://crates.io/unicode-bidi/0.3.4 \
+crate://crates.io/unicode-normalization/0.1.5 \
+crate://crates.io/unicode-xid/0.0.4 \
+crate://crates.io/unreachable/1.0.0 \
+crate://crates.io/url/1.5.1 \
+crate://crates.io/utf8-ranges/0.1.3 \
+crate://crates.io/utf8-ranges/1.0.0 \
+crate://crates.io/vcpkg/0.2.2 \
+crate://crates.io/void/1.0.2 \
+crate://crates.io/winapi-build/0.1.1 \
+crate://crates.io/winapi/0.2.8 \
+crate://crates.io/wincolor/0.1.4 \
+crate://crates.io/ws2_32-sys/0.2.1 \
+"
+
+
+
+# FIXME: update generateme with the real MD5 of the license file
+LIC_FILES_CHKSUM=" \
+file://LICENSE-MIT;md5=362255802eb5aa87810d12ddf3cfedb4 \
+file://LICENSE-APACHE;md5=1836efb2eb779966696f473ee8540542 \
+"
+
+SUMMARY = "Cargo, a package manager for Rust."
+HOMEPAGE = "https://crates.io"
+LICENSE = "MIT | Apache-2.0"
+
+# includes this file if it exists but does not fail
+# this is useful for anything you may want to override from
+# what cargo-bitbake generates.
+include cargo-${PV}.inc
+include cargo.inc
diff --git a/recipes-devtools/rust/files/rust-1.15.1/0001-Target-add-default-target.json-path-libdir-rust-targ.patch b/recipes-devtools/rust/files/rust-1.15.1/0001-Target-add-default-target.json-path-libdir-rust-targ.patch
deleted file mode 100644
index c0798d6..0000000
--- a/recipes-devtools/rust/files/rust-1.15.1/0001-Target-add-default-target.json-path-libdir-rust-targ.patch
+++ /dev/null
@@ -1,106 +0,0 @@
-From e9c6cf5d1a9bb7f50c5e98a660217062b510928b Mon Sep 17 00:00:00 2001
-From: Cody P Schafer <dev@codyps.com>
-Date: Tue, 18 Nov 2014 01:40:21 -0500
-Subject: [PATCH 1/3] Target: add default target.json path:
- $libdir/rust/targets
-
----
- src/librustc/session/config.rs  |  6 +++---
- src/librustc/session/mod.rs     |  8 ++++++--
- src/librustc_back/target/mod.rs | 12 ++++++++++--
- 3 files changed, 19 insertions(+), 7 deletions(-)
-
-diff --git a/src/librustc/session/config.rs b/src/librustc/session/config.rs
-index 5e3c8bc..15fd763 100644
---- a/src/librustc/session/config.rs
-+++ b/src/librustc/session/config.rs
-@@ -42,7 +42,7 @@ use std::hash::Hasher;
- use std::collections::hash_map::DefaultHasher;
- use std::collections::HashSet;
- use std::iter::FromIterator;
--use std::path::PathBuf;
-+use std::path::{Path, PathBuf};
- 
- pub struct Config {
-     pub target: Target,
-@@ -1001,8 +1001,8 @@ pub fn build_configuration(sess: &Session,
-     user_cfg
- }
- 
--pub fn build_target_config(opts: &Options, sp: &Handler) -> Config {
--    let target = match Target::search(&opts.target_triple) {
-+pub fn build_target_config(sysroot: &Path, opts: &Options, sp: &Handler) -> Config {
-+    let target = match Target::search(sysroot, &opts.target_triple[..]) {
-         Ok(t) => t,
-         Err(e) => {
-             sp.struct_fatal(&format!("Error loading target specification: {}", e))
-diff --git a/src/librustc/session/mod.rs b/src/librustc/session/mod.rs
-index 91765e6..29e5e5d 100644
---- a/src/librustc/session/mod.rs
-+++ b/src/librustc/session/mod.rs
-@@ -575,13 +575,17 @@ pub fn build_session_(sopts: config::Options,
-                       codemap: Rc<codemap::CodeMap>,
-                       cstore: Rc<for<'a> CrateStore<'a>>)
-                       -> Session {
--    let host = match Target::search(config::host_triple()) {
-+    let sysroot = match sopts.maybe_sysroot {
-+        Some(ref x) => PathBuf::from(x),
-+        None => filesearch::get_or_default_sysroot()
-+    };
-+    let host = match Target::search(&sysroot, config::host_triple()) {
-         Ok(t) => t,
-         Err(e) => {
-             panic!(span_diagnostic.fatal(&format!("Error loading host specification: {}", e)));
-     }
-     };
--    let target_cfg = config::build_target_config(&sopts, &span_diagnostic);
-+    let target_cfg = config::build_target_config(&sysroot, &sopts, &span_diagnostic);
-     let p_s = parse::ParseSess::with_span_handler(span_diagnostic, codemap);
-     let default_sysroot = match sopts.maybe_sysroot {
-         Some(_) => None,
-diff --git a/src/librustc_back/target/mod.rs b/src/librustc_back/target/mod.rs
-index 351d469..3282dbd 100644
---- a/src/librustc_back/target/mod.rs
-+++ b/src/librustc_back/target/mod.rs
-@@ -51,6 +51,7 @@ use std::io::prelude::*;
- use syntax::abi::{Abi, lookup as lookup_abi};
- 
- use PanicStrategy;
-+use std::path::Path;
- 
- mod android_base;
- mod apple_base;
-@@ -625,12 +626,13 @@ impl Target {
-     ///
-     /// The error string could come from any of the APIs called, including
-     /// filesystem access and JSON decoding.
--    pub fn search(target: &str) -> Result<Target, String> {
-+    pub fn search(sysroot: &Path, target: &str) -> Result<Target, String> {
-         use std::env;
-         use std::ffi::OsString;
-         use std::fs::File;
-         use std::path::{Path, PathBuf};
-         use serialize::json;
-+        use std::iter::IntoIterator;
- 
-         fn load_file(path: &Path) -> Result<Target, String> {
-             let mut f = File::open(path).map_err(|e| e.to_string())?;
-@@ -661,8 +663,14 @@ impl Target {
-                               .unwrap_or(OsString::new());
- 
-         // FIXME 16351: add a sane default search path?
-+        let mut default_path = sysroot.to_owned();
-+        default_path.push(env!("CFG_LIBDIR_RELATIVE"));
-+        default_path.push("rustlib");
- 
--        for dir in env::split_paths(&target_path) {
-+        let paths = env::split_paths(&target_path)
-+            .chain(Some(default_path).into_iter());
-+
-+        for dir in paths {
-             let p =  dir.join(&path);
-             if p.is_file() {
-                 return load_file(&p);
--- 
-2.10.1 (Apple Git-78)
-
diff --git a/recipes-devtools/rust/libstd-rs.inc b/recipes-devtools/rust/libstd-rs.inc
index 5bcfb69..f5dce79 100644
--- a/recipes-devtools/rust/libstd-rs.inc
+++ b/recipes-devtools/rust/libstd-rs.inc
@@ -2,7 +2,6 @@ SUMMARY = "Rust standard libaries"
 HOMEPAGE = "http://www.rust-lang.org"
 SECTION = "devel"
 LICENSE = "MIT | Apache-2.0"
-LIC_FILES_CHKSUM ="file://COPYRIGHT;md5=43e1f1fb9c0ee3af66693d8c4fecafa8"
 
 RUSTLIB_DEP = ""
 inherit cargo
@@ -10,16 +9,16 @@ inherit cargo
 # Needed so cargo can find libbacktrace
 RUSTFLAGS += "-L ${STAGING_LIBDIR}"
 
+S = "${RUSTSRC}/src/libstd"
+
 do_compile_prepend () {
-    cd ${S}/src/rustc/std_shim
     export CARGO_TARGET_DIR="${B}"
-    # For Rust 1.12.1 and lower
-    export RUSTC_BOOTSTRAP_KEY="${RS_KEY}"
     # For Rust 1.13.0 and newer
     export RUSTC_BOOTSTRAP="1"
 }
 
 do_install () {
     mkdir -p ${D}${rustlibdir}
+
     cp ${B}/${TARGET_SYS}/release/deps/* ${D}${rustlibdir}
 }
diff --git a/recipes-devtools/rust/libstd-rs_1.15.1.bb b/recipes-devtools/rust/libstd-rs_1.15.1.bb
index 944df6a..89f7da8 100644
--- a/recipes-devtools/rust/libstd-rs_1.15.1.bb
+++ b/recipes-devtools/rust/libstd-rs_1.15.1.bb
@@ -1,9 +1,11 @@
 require rust-source-${PV}.inc
 require libstd-rs.inc
 
-EXTRA_OECONF = "--disable-rustbuild"
+LIC_FILES_CHKSUM = "file://../../COPYRIGHT;md5=43e1f1fb9c0ee3af66693d8c4fecafa8"
 
-CARGO_BUILD_FLAGS += "--features 'jemalloc panic-unwind'"
+# Don't use jemalloc as it doesn't work for many targets.
+# https://github.com/rust-lang/rust/pull/37392
+CARGO_BUILD_FLAGS += "--features 'panic-unwind'"
 
 SRC_URI += "\
 	crate://crates.io/cmake/0.1.18 \
diff --git a/recipes-devtools/rust/libstd-rs_1.20.0.bb b/recipes-devtools/rust/libstd-rs_1.20.0.bb
new file mode 100644
index 0000000..4e0166c
--- /dev/null
+++ b/recipes-devtools/rust/libstd-rs_1.20.0.bb
@@ -0,0 +1,139 @@
+require rust-source-${PV}.inc
+require libstd-rs.inc
+
+LIC_FILES_CHKSUM = "file://../../COPYRIGHT;md5=12922f5565a22267bd82aaeb6d3548e5"
+
+# Don't use jemalloc as it doesn't work for many targets.
+# https://github.com/rust-lang/rust/pull/37392
+CARGO_BUILD_FLAGS += "--features 'panic-unwind'"
+
+# These are taken from src/libstd/Cargo.toml via cargo-bitbake
+SRC_URI += " \
+crate://crates.io/advapi32-sys/0.2.0 \
+crate://crates.io/aho-corasick/0.5.3 \
+crate://crates.io/aho-corasick/0.6.3 \
+crate://crates.io/ansi_term/0.9.0 \
+crate://crates.io/atty/0.2.2 \
+crate://crates.io/backtrace-sys/0.1.11 \
+crate://crates.io/backtrace/0.3.2 \
+crate://crates.io/bitflags/0.8.2 \
+crate://crates.io/bitflags/0.9.1 \
+crate://crates.io/bufstream/0.1.3 \
+crate://crates.io/cfg-if/0.1.2 \
+crate://crates.io/clap/2.25.0 \
+crate://crates.io/cmake/0.1.24 \
+crate://crates.io/crossbeam/0.2.10 \
+crate://crates.io/curl-sys/0.3.14 \
+crate://crates.io/curl/0.4.7 \
+crate://crates.io/dbghelp-sys/0.2.0 \
+crate://crates.io/diff/0.1.10 \
+crate://crates.io/docopt/0.8.1 \
+crate://crates.io/dtoa/0.4.1 \
+crate://crates.io/env_logger/0.4.3 \
+crate://crates.io/error-chain/0.10.0 \
+crate://crates.io/error-chain/0.11.0-rc.2 \
+crate://crates.io/filetime/0.1.10 \
+crate://crates.io/flate2/0.2.19 \
+crate://crates.io/foreign-types/0.2.0 \
+crate://crates.io/fs2/0.4.2 \
+crate://crates.io/gcc/0.3.51 \
+crate://crates.io/getopts/0.2.14 \
+crate://crates.io/git2-curl/0.7.0 \
+crate://crates.io/git2/0.6.6 \
+crate://crates.io/glob/0.2.11 \
+crate://crates.io/hamcrest/0.1.1 \
+crate://crates.io/handlebars/0.26.2 \
+crate://crates.io/hex/0.2.0 \
+crate://crates.io/idna/0.1.2 \
+crate://crates.io/itoa/0.3.1 \
+crate://crates.io/jobserver/0.1.6 \
+crate://crates.io/kernel32-sys/0.2.2 \
+crate://crates.io/lazy_static/0.2.8 \
+crate://crates.io/libc/0.2.26 \
+crate://crates.io/libgit2-sys/0.6.12 \
+crate://crates.io/libssh2-sys/0.2.6 \
+crate://crates.io/libz-sys/1.0.16 \
+crate://crates.io/log/0.3.8 \
+crate://crates.io/lzma-sys/0.1.7 \
+crate://crates.io/matches/0.1.6 \
+crate://crates.io/mdbook/0.0.22 \
+crate://crates.io/memchr/0.1.11 \
+crate://crates.io/memchr/1.0.1 \
+crate://crates.io/miniz-sys/0.1.9 \
+crate://crates.io/miow/0.2.1 \
+crate://crates.io/net2/0.2.29 \
+crate://crates.io/num-bigint/0.1.39 \
+crate://crates.io/num-complex/0.1.38 \
+crate://crates.io/num-integer/0.1.34 \
+crate://crates.io/num-iter/0.1.33 \
+crate://crates.io/num-rational/0.1.38 \
+crate://crates.io/num-traits/0.1.39 \
+crate://crates.io/num/0.1.39 \
+crate://crates.io/num_cpus/1.6.2 \
+crate://crates.io/open/1.2.0 \
+crate://crates.io/openssl-probe/0.1.1 \
+crate://crates.io/openssl-sys/0.9.15 \
+crate://crates.io/openssl/0.9.15 \
+crate://crates.io/owning_ref/0.3.3 \
+crate://crates.io/percent-encoding/1.0.0 \
+crate://crates.io/pest/0.3.3 \
+crate://crates.io/pkg-config/0.3.9 \
+crate://crates.io/psapi-sys/0.1.0 \
+crate://crates.io/pulldown-cmark/0.0.14 \
+crate://crates.io/quick-error/1.2.0 \
+crate://crates.io/quote/0.3.15 \
+crate://crates.io/rand/0.3.15 \
+crate://crates.io/regex-syntax/0.3.9 \
+crate://crates.io/regex-syntax/0.4.1 \
+crate://crates.io/regex/0.1.80 \
+crate://crates.io/regex/0.2.2 \
+crate://crates.io/rls-data/0.7.0 \
+crate://crates.io/rls-span/0.4.0 \
+crate://crates.io/rustc-demangle/0.1.4 \
+crate://crates.io/rustc-serialize/0.3.24 \
+crate://crates.io/same-file/0.1.3 \
+crate://crates.io/scoped-tls/0.1.0 \
+crate://crates.io/semver-parser/0.7.0 \
+crate://crates.io/semver/0.7.0 \
+crate://crates.io/serde/1.0.10 \
+crate://crates.io/serde_derive/1.0.10 \
+crate://crates.io/serde_derive_internals/0.15.1 \
+crate://crates.io/serde_ignored/0.0.3 \
+crate://crates.io/serde_json/1.0.2 \
+crate://crates.io/shell-escape/0.1.3 \
+crate://crates.io/socket2/0.2.1 \
+crate://crates.io/stable_deref_trait/1.0.0 \
+crate://crates.io/strsim/0.6.0 \
+crate://crates.io/syn/0.11.11 \
+crate://crates.io/synom/0.11.3 \
+crate://crates.io/tar/0.4.13 \
+crate://crates.io/tempdir/0.3.5 \
+crate://crates.io/term_size/0.3.0 \
+crate://crates.io/termcolor/0.3.2 \
+crate://crates.io/textwrap/0.6.0 \
+crate://crates.io/thread-id/2.0.0 \
+crate://crates.io/thread_local/0.2.7 \
+crate://crates.io/thread_local/0.3.4 \
+crate://crates.io/toml/0.1.30 \
+crate://crates.io/toml/0.4.2 \
+crate://crates.io/unicode-bidi/0.3.4 \
+crate://crates.io/unicode-normalization/0.1.5 \
+crate://crates.io/unicode-segmentation/1.1.0 \
+crate://crates.io/unicode-width/0.1.4 \
+crate://crates.io/unicode-xid/0.0.4 \
+crate://crates.io/unreachable/1.0.0 \
+crate://crates.io/url/1.5.1 \
+crate://crates.io/utf8-ranges/0.1.3 \
+crate://crates.io/utf8-ranges/1.0.0 \
+crate://crates.io/vcpkg/0.2.2 \
+crate://crates.io/vec_map/0.8.0 \
+crate://crates.io/void/1.0.2 \
+crate://crates.io/walkdir/1.0.7 \
+crate://crates.io/winapi-build/0.1.1 \
+crate://crates.io/winapi/0.2.8 \
+crate://crates.io/wincolor/0.1.4 \
+crate://crates.io/ws2_32-sys/0.2.1 \
+crate://crates.io/xattr/0.1.11 \
+crate://crates.io/xz2/0.1.3 \
+crate://crates.io/yaml-rust/0.3.5 \
+"
diff --git a/recipes-devtools/rust/rust-cross_1.15.1.bb b/recipes-devtools/rust/rust-cross_1.15.1.bb
index ddc25d3..34d92de 100644
--- a/recipes-devtools/rust/rust-cross_1.15.1.bb
+++ b/recipes-devtools/rust/rust-cross_1.15.1.bb
@@ -1,2 +1,3 @@
 require rust-cross.inc
 require rust-source-${PV}.inc
+require rust-snapshot-${PV}.inc
diff --git a/recipes-devtools/rust/rust-cross_1.20.0.bb b/recipes-devtools/rust/rust-cross_1.20.0.bb
new file mode 100644
index 0000000..34d92de
--- /dev/null
+++ b/recipes-devtools/rust/rust-cross_1.20.0.bb
@@ -0,0 +1,3 @@
+require rust-cross.inc
+require rust-source-${PV}.inc
+require rust-snapshot-${PV}.inc
diff --git a/recipes-devtools/rust/rust-llvm_1.20.0.bb b/recipes-devtools/rust/rust-llvm_1.20.0.bb
new file mode 100644
index 0000000..19305d2
--- /dev/null
+++ b/recipes-devtools/rust/rust-llvm_1.20.0.bb
@@ -0,0 +1,16 @@
+require rust-source-${PV}.inc
+require rust-llvm.inc
+
+LIC_FILES_CHKSUM = "file://LICENSE.TXT;md5=e825e017edc35cfd58e26116e5251771"
+
+do_install_prepend () {
+	# the install does a sed on this without installing the file
+	# we don't need it for anything
+	mkdir -p "${D}/usr/share/llvm/cmake"
+	touch "${D}/usr/share/llvm/cmake/LLVMExports-noconfig.cmake"
+}
+
+do_install_append () {
+	# we don't need any of this stuff to build Rust
+	rm -rf "${D}/usr/lib/cmake"
+}
diff --git a/recipes-devtools/rust/rust-snapshot-1.15.1.inc b/recipes-devtools/rust/rust-snapshot-1.15.1.inc
new file mode 100644
index 0000000..85b4d4b
--- /dev/null
+++ b/recipes-devtools/rust/rust-snapshot-1.15.1.inc
@@ -0,0 +1,30 @@
+# Specifics for Rust 1.15.1
+
+## This is information on the rust-snapshot (binary) used to build our current release.
+## snapshot info is taken from rust/src/stage0.txt
+## TODO: find a way to add additional SRC_URIs based on the contents of an
+##       earlier SRC_URI.
+RS_VERSION = "1.14.0"
+
+RUST_STD_SNAPSHOT = "rust-std-${RS_VERSION}-${RUST_BUILD_SYS}"
+RUSTC_SNAPSHOT = "rustc-${RS_VERSION}-${RUST_BUILD_SYS}"
+CARGO_REV = "fbeea902d2c9a5be6d99cc35681565d8f7832592"
+CARGO_SNAPSHOT = "cargo-nightly-${RUST_BUILD_SYS}"
+
+SRC_URI += " \
+	https://static.rust-lang.org/dist/${RUST_STD_SNAPSHOT}.tar.gz;name=rust-std-snapshot;subdir=rust-snapshot-components \
+	https://static.rust-lang.org/dist/${RUSTC_SNAPSHOT}.tar.gz;name=rustc-snapshot;subdir=rust-snapshot-components \
+"
+
+# Downloaded cargo tarballs must be named differently to distinguish between versions.
+SRC_URI += " \
+	https://s3.amazonaws.com/rust-lang-ci/cargo-builds/${CARGO_REV}/${CARGO_SNAPSHOT}.tar.gz;name=cargo-snapshot;subdir=rust-snapshot-components;downloadfilename=${CARGO_SNAPSHOT}-${CARGO_REV}.tar.gz \
+"
+
+# These are x86_64-unknown-linux-gnu hashes, how can we add more?
+SRC_URI[rustc-snapshot.md5sum] = "f178d9d6aad0f87c451f4b2f93170633"
+SRC_URI[rustc-snapshot.sha256sum] = "0eeec4211aa872f24c220200a0c2b095bbfc9c0f737c1c5df2555967c8f36787"
+SRC_URI[rust-std-snapshot.md5sum] = "518e492fc3d50d8c678056eb788bd0e7"
+SRC_URI[rust-std-snapshot.sha256sum] = "3a609bfe9572c742d71199faad578ee76abe9067cd8df698bda6e3ef5caf6ec4"
+SRC_URI[cargo-snapshot.md5sum] = "59bc24d15c393de364dadb3f4e3c9a5a"
+SRC_URI[cargo-snapshot.sha256sum] = "0e052514ee88f236153a0d6c6f38f66d691eb4cf1ac09e6040d96e5101d57800"
diff --git a/recipes-devtools/rust/rust-snapshot-1.20.0.inc b/recipes-devtools/rust/rust-snapshot-1.20.0.inc
new file mode 100644
index 0000000..6e2af7d
--- /dev/null
+++ b/recipes-devtools/rust/rust-snapshot-1.20.0.inc
@@ -0,0 +1,26 @@
+# Specifics for Rust 1.20.0
+
+## This is information on the rust-snapshot (binary) used to build our current release.
+## snapshot info is taken from rust/src/stage0.txt
+## TODO: find a way to add additional SRC_URIs based on the contents of an
+##       earlier SRC_URI.
+RS_VERSION = "1.19.0"
+
+RUST_STD_SNAPSHOT = "rust-std-${RS_VERSION}-${RUST_BUILD_SYS}"
+RUSTC_SNAPSHOT = "rustc-${RS_VERSION}-${RUST_BUILD_SYS}"
+CARGO_VERSION = "0.20.0"
+CARGO_SNAPSHOT = "cargo-${CARGO_VERSION}-${RUST_BUILD_SYS}"
+
+SRC_URI += " \
+	https://static.rust-lang.org/dist/${RUST_STD_SNAPSHOT}.tar.gz;name=rust-std-snapshot;subdir=rust-snapshot-components \
+	https://static.rust-lang.org/dist/${RUSTC_SNAPSHOT}.tar.gz;name=rustc-snapshot;subdir=rust-snapshot-components \
+	https://static.rust-lang.org/dist/${CARGO_SNAPSHOT}.tar.gz;name=cargo-snapshot;subdir=rust-snapshot-components \
+	"
+
+# These are x86_64-unknown-linux-gnu hashes, how can we add more?
+SRC_URI[rustc-snapshot.md5sum] = "e5077b80cc953a1fb9c767aa039d5984"
+SRC_URI[rustc-snapshot.sha256sum] = "4c8df3088d17c8e06bf58d453d39bd521487defcefc8193203b80f0fb797d6fe"
+SRC_URI[rust-std-snapshot.md5sum] = "2bff47764df01c99f349908601c10478"
+SRC_URI[rust-std-snapshot.sha256sum] = "5905803e8a127f656bf253978692f0d6cf6c9206c527e4d6d7e981980618d1b6"
+SRC_URI[cargo-snapshot.md5sum] = "63aa861b029eec9f559f4fb5a10c287d"
+SRC_URI[cargo-snapshot.sha256sum] = "a677d13b01d00ad13edf75c7d1b484421c7fc09338bf9ed6d456b4685bb42ed1"
diff --git a/recipes-devtools/rust/rust-source-1.15.1.inc b/recipes-devtools/rust/rust-source-1.15.1.inc
index dc3bdfb..deae018 100644
--- a/recipes-devtools/rust/rust-source-1.15.1.inc
+++ b/recipes-devtools/rust/rust-source-1.15.1.inc
@@ -1,17 +1,5 @@
 # Specifics for Rust 1.15.1
 
-## This is information on the rust-snapshot (binary) used to build our current release.
-## snapshot info is taken from rust/src/stage0.txt
-## TODO: find a way to add additional SRC_URIs based on the contents of an
-##       earlier SRC_URI.
-RS_VERSION = "1.14.0"
-
-RUST_SNAPSHOT = "rustc-${RS_VERSION}-${RUST_BUILD_SYS}"
-
-# These are x86_64-unknown-linux-gnu hashes, how can we add more?
-SRC_URI[rust-snapshot.md5sum] = "f178d9d6aad0f87c451f4b2f93170633"
-SRC_URI[rust-snapshot.sha256sum] = "0eeec4211aa872f24c220200a0c2b095bbfc9c0f737c1c5df2555967c8f36787"
-
 SRC_URI += "\
 	https://static.rust-lang.org/dist/rustc-${PV}-src.tar.gz;name=rust \
     "
@@ -22,3 +10,5 @@ SRC_URI[rust.sha256sum] = "2e7daad418a830b45b977cd7ecf181b65f30f73df63ff36e124ea
 RUSTSRC = "${WORKDIR}/rustc-${PV}-src"
 # set this as our default
 S = "${RUSTSRC}"
+
+LIC_FILES_CHKSUM = "file://COPYRIGHT;md5=43e1f1fb9c0ee3af66693d8c4fecafa8"
diff --git a/recipes-devtools/rust/rust-source-1.20.0.inc b/recipes-devtools/rust/rust-source-1.20.0.inc
new file mode 100644
index 0000000..28256b6
--- /dev/null
+++ b/recipes-devtools/rust/rust-source-1.20.0.inc
@@ -0,0 +1,14 @@
+# Specifics for Rust 1.20.0
+
+SRC_URI += "\
+	https://static.rust-lang.org/dist/rustc-${PV}-src.tar.gz;name=rust \
+    "
+SRC_URI[rust.md5sum] = "1d3c5d25d8e6215e7d0b6d4d4c9835b9"
+SRC_URI[rust.sha256sum] = "2aa4875ff4472c6e35262bbb9052cb2623da3dae6084a858cc59d36f33f18214"
+
+# later versions of rust change the directory that they unextract to
+RUSTSRC = "${WORKDIR}/rustc-${PV}-src"
+# set this as our default
+S = "${RUSTSRC}"
+
+LIC_FILES_CHKSUM = "file://COPYRIGHT;md5=12922f5565a22267bd82aaeb6d3548e5"
diff --git a/recipes-devtools/rust/rust.inc b/recipes-devtools/rust/rust.inc
index 03abae0..53251d6 100644
--- a/recipes-devtools/rust/rust.inc
+++ b/recipes-devtools/rust/rust.inc
@@ -2,21 +2,28 @@ SUMMARY = "Rust compiler and runtime libaries"
 HOMEPAGE = "http://www.rust-lang.org"
 SECTION = "devel"
 LICENSE = "MIT | Apache-2.0"
-LIC_FILES_CHKSUM ="file://COPYRIGHT;md5=43e1f1fb9c0ee3af66693d8c4fecafa8"
 
 inherit rust
+inherit cargo_common
 
-SRC_URI = "\
-	https://static.rust-lang.org/dist/${RUST_SNAPSHOT}.tar.gz;name=rust-snapshot \
-    "
-
-DEPENDS += "file-native"
+DEPENDS += "file-native python-native"
 
 # We generate local targets, and need to be able to locate them
 export RUST_TARGET_PATH="${WORKDIR}/targets/"
 
 export FORCE_CRATE_HASH="${BB_TASKHASH}"
 
+setup_cargo_environment () {
+    # The first step is to build bootstrap and some early stage tools,
+    # these are build for the same target as the snapshot, e.g.
+    # x86_64-unknown-linux-gnu.
+    # Later stages are build for the native target (i.e. target.x86_64-linux)
+    cargo_common_do_configure
+
+    echo "[target.${RUST_BUILD_SYS}]" >> ${CARGO_HOME}/config
+    echo "linker = '${RUST_TARGET_CCLD}'" >> ${CARGO_HOME}/config
+}
+
 # Right now this is focused on arm-specific tune features.
 # We get away with this for now as one can only use x86-64 as the build host
 # (not arm).
@@ -115,6 +122,7 @@ DATA_LAYOUT[arm] = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
 LLVM_TARGET[arm] = "${RUST_TARGET_SYS}"
 TARGET_ENDIAN[arm] = "little"
 TARGET_POINTER_WIDTH[arm] = "32"
+MAX_ATOMIC_WIDTH[arm] = "64"
 FEATURES[arm] = "+v6,+vfp2"
 
 ## aarch64-unknown-linux-gnu
@@ -122,24 +130,28 @@ DATA_LAYOUT[aarch64] = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
 LLVM_TARGET[aarch64] = "aarch64-unknown-linux-gnu"
 TARGET_ENDIAN[aarch64] = "little"
 TARGET_POINTER_WIDTH[aarch64] = "64"
+MAX_ATOMIC_WIDTH[aarch64] = "128"
 
 ## x86_64-unknown-linux-gnu
 DATA_LAYOUT[x86_64] = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 LLVM_TARGET[x86_64] = "x86_64-unknown-linux-gnu"
 TARGET_ENDIAN[x86_64] = "little"
 TARGET_POINTER_WIDTH[x86_64] = "64"
+MAX_ATOMIC_WIDTH[x86_64] = "64"
 
 ## i686-unknown-linux-gnu
 DATA_LAYOUT[i686] = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
 LLVM_TARGET[i686] = "i686-unknown-linux-gnu"
 TARGET_ENDIAN[i686] = "little"
 TARGET_POINTER_WIDTH[i686] = "32"
+MAX_ATOMIC_WIDTH[i686] = "64"
 
 ## XXX: a bit of a hack so qemux86 builds, clone of i686-unknown-linux-gnu above
 DATA_LAYOUT[i586] = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
 LLVM_TARGET[i586] = "i586-unknown-linux-gnu"
 TARGET_ENDIAN[i586] = "little"
 TARGET_POINTER_WIDTH[i586] = "32"
+MAX_ATOMIC_WIDTH[i586] = "64"
 
 def arch_for(d, thing):
     return d.getVar('{}_ARCH'.format(thing))
@@ -150,21 +162,6 @@ def sys_for(d, thing):
 def prefix_for(d, thing):
     return d.getVar('{}_PREFIX'.format(thing))
 
-## Note: TOOLCHAIN_OPTIONS is set to "" by native.bbclass and cross.bbclass,
-## which prevents us from grabbing them when building a cross compiler (native doesn't matter).
-## We workaround this in internal-rust-cross.bbclass.
-def cflags_for(d, thing):
-    cc_arch = d.getVar('{}_CC_ARCH'.format(thing)) or ""
-    flags = d.getVar('{}_CFLAGS'.format(thing)) or ""
-    tc = d.getVar('TOOLCHAIN_OPTIONS') or ""
-    return ' '.join([cc_arch, flags, tc])
-
-def cxxflags_for(d, thing):
-    cc_arch = d.getVar('{}_CC_ARCH'.format(thing)) or ""
-    flags = d.getVar('{}_CXXFLAGS'.format(thing)) or ""
-    tc = d.getVar('TOOLCHAIN_OPTIONS') or ""
-    return ' '.join([cc_arch, flags, tc])
-
 # Convert a normal arch (HOST_ARCH, TARGET_ARCH, BUILD_ARCH, etc) to something
 # rust's internals won't choke on.
 def arch_to_rust_target_arch(arch):
@@ -199,6 +196,7 @@ TARGET_LLVM_FEATURES_class-native = "${@llvm_features_from_cc_arch(d)}"
 
 def rust_gen_target(d, thing, wd):
     import json
+    from distutils.version import LooseVersion
     arch = arch_for(d, thing)
     sys = sys_for(d, thing)
     prefix = prefix_for(d, thing)
@@ -215,29 +213,37 @@ def rust_gen_target(d, thing, wd):
     tspec = {}
     tspec['llvm-target'] = d.getVarFlag('LLVM_TARGET', arch)
     tspec['data-layout'] = d.getVarFlag('DATA_LAYOUT', arch)
+    tspec['max-atomic-width'] = d.getVarFlag('MAX_ATOMIC_WIDTH', arch)
     tspec['target-pointer-width'] = d.getVarFlag('TARGET_POINTER_WIDTH', arch)
-    tspec['target-word-size'] = tspec['target-pointer-width']
     tspec['target-endian'] = d.getVarFlag('TARGET_ENDIAN', arch)
     tspec['arch'] = arch_to_rust_target_arch(arch)
     tspec['os'] = "linux"
     tspec['env'] = "gnu"
+    tspec['vendor'] = "unknown"
+    tspec['target-family'] = "unix"
     tspec['linker'] = "{}{}gcc".format(d.getVar('CCACHE'), prefix)
-    tspec['objcopy'] = "{}objcopy".format(prefix)
     tspec['ar'] = "{}ar".format(prefix)
     tspec['cpu'] = cpu
     if features is not "":
         tspec['features'] = features
     tspec['dynamic-linking'] = True
     tspec['executables'] = True
-    tspec['morestack'] = True
     tspec['linker-is-gnu'] = True
+    tspec['linker-flavor'] = "gcc"
     tspec['has-rpath'] = True
     tspec['has-elf-tls'] = True
     tspec['position-independent-executables'] = True
 
+    # Don't use jemalloc as it doesn't work for many targets.
+    # https://github.com/rust-lang/rust/pull/37392
+    # From 1.20.0 and forward, system allocator is the default.
+    if LooseVersion(d.getVar("PV")) < LooseVersion("1.20.0"):
+        tspec['exe-allocation-crate'] = "alloc_system"
+        tspec['lib-allocation-crate'] = "alloc_system"
+
     # write out the target spec json file
     with open(wd + sys + '.json', 'w') as f:
-        json.dump(tspec, f)
+        json.dump(tspec, f, indent=4)
 
 
 python do_rust_gen_targets () {
@@ -252,128 +258,86 @@ python do_rust_gen_targets () {
 addtask rust_gen_targets after do_patch before do_compile
 do_rust_gen_targets[dirs] += "${WORKDIR}/targets"
 
-def rust_gen_mk_cfg(d, thing):
-    ''''
-    Rust's build system adds support for new archs via 2 things:
-     1. a file in mk/cfg which defines how the runtime libraries are built
-     2. and rustc arch definition either built into the compiler or supplied as a .json file
 
-    This generates a new #1 for the given 'thing' (one of HOST, TARGET, BUILD)
-    using a "similar" config that rust already supplies as a template.
+do_rust_setup_snapshot () {
+    for installer in "${WORKDIR}/rust-snapshot-components/"*"/install.sh"; do
+        "${installer}" --prefix="${WORKDIR}/rust-snapshot" --disable-ldconfig
+    done
 
-    Note that the configure process also depends on the existence of #1, so we
-    have to run this before do_configure
-    '''
-    import os
-    import subprocess
-
-    rust_base_sys = rust_base_triple(d, thing)
-    arch = arch_for(d, thing)
-    sys = sys_for(d, thing)
-    prefix = prefix_for(d, thing)
-    llvm_target = d.getVarFlag('LLVM_TARGET', arch)
-    ldflags = d.getVar('LDFLAGS') + d.getVar('HOST_CC_ARCH') + d.getVar('TOOLCHAIN_OPTIONS')
-
-    b = os.path.join(d.getVar('S'), 'mk', 'cfg')
-    o = open(os.path.join(b, sys_for(d, thing) + '.mk'), 'w')
-    i = open(os.path.join(b, rust_base_sys + '.mk'), 'r')
-
-    r = subprocess.call(['sed',
-        # CFLAGS, LDFLAGS, CXXFLAGS, CPPFLAGS are used by rust's build for a
-        # wide range of targets (not just HOST). Yocto's settings for them will
-        # be inappropriate, avoid having random targets try to use them, we'll
-        # add as needed.
-        '-e', 's/$(CFLAGS)//',
-        '-e', 's/$(CXXFLAGS)//',
-        '-e', 's/$(CPPFLAGS)//',
-        '-e', 's/$(LDFLAGS)//',
-
-        # update all triplets to the new one
-        '-e', 's/{}/{}/g'.format(rust_base_sys, sys),
-
-        # Replace tools with our own (CROSS_PREFIX is appended to all tools
-        # by rust's build system). We delete and then insert this because not
-        # all targets define it.
-        '-e', 's/^CROSS_PREFIX_{}.*$//'.format(sys),
-        '-e', '2 a CROSS_PREFIX_{} := {}'.format(sys, prefix),
-        '-e', 's/^CFG_LLVM_TARGET_.*$//',
-        '-e', '2 a CFG_LLVM_TARGET_{} := {}'.format(sys, llvm_target),
-        '-e', 's/^CC_{}=.*$/CC_{} := gcc/'.format(sys, sys),
-        '-e', 's/^CXX_{}.*$/CXX_{} := g++/'.format(sys, sys),
-        '-e', 's/^CPP_{}.*$/CPP_{} := gcc -E/'.format(sys, sys),
-        '-e', 's/^AR_{}.*$/AR_{} := ar/'.format(sys, sys),
-
-        # Some targets don't have LINK even though it is required to build.
-        '-e', 's/^LINK_{}.*$//'.format(sys),
-        '-e', '2 a LINK_{} := gcc'.format(sys),
-
-        # Append our flags to the existing ones
-        '-e', '/^CFG_JEMALLOC_CFLAGS/ s;$; {};'.format(cflags_for(d, thing)),
-        '-e', '/^CFG_GCCISH_CFLAGS/ s;$; {};'.format(cflags_for(d, thing)),
-        '-e', '/^CFG_GCCISH_CXXFLAGS/ s;$; {};'.format(cxxflags_for(d, thing)),
-        '-e', '/^CFG_GCCISH_LINK_FLAGS/ s;$; {};'.format(ldflags),
-
-        # May need to add: CFG_LLC_FLAGS_{}
-        ], stdout=o, stdin=i)
-    if r:
-        raise Exception
-    o.write("OBJCOPY_{} := {}objcopy\n".format(sys, prefix))
-    # Note: this isn't how this variable is supposed to be used, but for
-    # non-msvc platforms nothing else touches it.
-    # These are the only extra flags passed to the rustllvm (c++ code) build.
-    # These are only used for host (even though we emit them for all targets)
-    # Without this, there are link failures due to GLIBC_CXX11_ABI issues in
-    # certain setups.
-    o.write("EXTRA_RUSTLLVM_CXXFLAGS_{} := {}\n".format(sys, cxxflags_for(d, thing)))
-    o.close()
-    i.close()
-
-python do_rust_arch_fixup () {
-    for thing in ['BUILD', 'HOST', 'TARGET']:
-        bb.debug(1, "rust_gen_mk_cfg for " + thing)
-        rust_gen_mk_cfg(d, thing)
+    # Some versions of rust (e.g. 1.18.0) tries to find cargo in stage0/bin/cargo
+    # and fail without it there.
+    mkdir -p ${RUSTSRC}/build/${BUILD_SYS}
+    ln -s ${WORKDIR}/rust-snapshot/ ${RUSTSRC}/build/${BUILD_SYS}/stage0
 }
-addtask rust_arch_fixup before do_configure after do_patch
-do_rust_arch_fixup[dirs] += "${S}/mk/cfg"
+addtask rust_setup_snapshot after do_unpack before do_configure
+do_rust_setup_snapshot[dirs] += "${WORKDIR}/rust-snapshot"
 
-# prevent the rust-installer scripts from calling ldconfig
-export CFG_DISABLE_LDCONFIG="notempty"
 
-# rust's configure doesn't recognize --disable-static, so remove it.
-DISABLE_STATIC = ""
+python do_configure() {
+    import json
+    try:
+        import configparser
+    except ImportError:
+        import ConfigParser as configparser
 
-do_configure () {
-    # FIXME: target_prefix vs prefix, see cross.bbclass
+    # toml is rather similar to standard ini like format except it likes values
+    # that look more JSON like. So for our purposes simply escaping all values
+    # as JSON seem to work fine.
 
-    # - rpath is required otherwise rustc fails to resolve symbols
-    # - submodule management is done by bitbake's fetching
-    ${S}/configure                          \
-        "--enable-rpath"                    \
-        "--disable-docs"                    \
-        "--disable-manage-submodules"       \
-        "--disable-debug"                   \
-        "--enable-optimize"                 \
-        "--enable-optimize-cxx"             \
-        "--disable-llvm-version-check"      \
-        "--llvm-root=${STAGING_DIR_NATIVE}/${prefix_native}" \
-        "--enable-optimize-tests"           \
-        "--release-channel=stable"          \
-        "--prefix=${prefix}"                \
-        "--target=${TARGET_SYS}"            \
-        "--host=${HOST_SYS}"                \
-        "--build=${BUILD_SYS}"              \
-        "--localstatedir=${localstatedir}"  \
-        "--sysconfdir=${sysconfdir}"        \
-        "--datadir=${datadir}"              \
-        "--infodir=${infodir}"              \
-        "--mandir=${mandir}"                \
-        "--libdir=${libdir}"                \
-        "--enable-local-rust"               \
-        "--local-rust-root=${WORKDIR}/${RUST_SNAPSHOT}/rustc" \
-        ${EXTRA_OECONF}
+    e = lambda s: json.dumps(s)
+
+    config = configparser.RawConfigParser()
+
+    # [target.ARCH-poky-linux]
+    target_section = "target.{}".format(d.getVar('TARGET_SYS', True))
+    config.add_section(target_section)
+
+    llvm_config = d.expand("${STAGING_DIR_NATIVE}${bindir_native}/llvm-config")
+    config.set(target_section, "llvm-config", e(llvm_config))
+
+    config.set(target_section, "cxx", e(d.expand("${RUST_TARGET_CXX}")))
+    config.set(target_section, "cc", e(d.expand("${RUST_TARGET_CC}")))
+
+    # [rust]
+    config.add_section("rust")
+    config.set("rust", "rpath", e(True))
+    config.set("rust", "channel", e("stable"))
+
+    # Don't use jemalloc as it doesn't work for many targets.
+    # https://github.com/rust-lang/rust/pull/37392
+    config.set("rust", "use-jemalloc", e(False))
+
+    # Whether or not to optimize the compiler and standard library
+    config.set("rust", "optimize", e(True))
+
+    # [build]
+    config.add_section("build")
+    config.set("build", "submodules", e(False))
+    config.set("build", "docs", e(False))
+
+    rustc = d.expand("${WORKDIR}/rust-snapshot/bin/rustc")
+    config.set("build", "rustc", e(rustc))
+
+    cargo = d.expand("${WORKDIR}/rust-snapshot/bin/cargo")
+    config.set("build", "cargo", e(cargo))
+
+    targets = [d.getVar("TARGET_SYS", True)]
+    config.set("build", "target", e(targets))
+
+    hosts = [d.getVar("HOST_SYS", True)]
+    config.set("build", "host", e(targets))
+
+    config.set("build", "build", e(d.getVar("BUILD_SYS", True)))
+
+    with open("config.toml", "w") as f:
+        config.write(f)
+
+    # set up ${WORKDIR}/cargo_home
+    bb.build.exec_func("setup_cargo_environment", d)
 }
 
-rust_runmake () {
+
+rust_runx () {
     echo "COMPILE ${PN}" "$@"
 
     # CFLAGS, LDFLAGS, CXXFLAGS, CPPFLAGS are used by rust's build for a
@@ -384,15 +348,27 @@ rust_runmake () {
     unset CXXFLAGS
     unset CPPFLAGS
 
-    oe_runmake "VERBOSE=1" "$@"
+    oe_cargo_fix_env
+
+    python src/bootstrap/bootstrap.py "$@" --verbose
 }
 
+
 do_compile () {
-    rust_runmake
+    rust_runx build
 }
 
-rust_do_install () {
-    rust_runmake DESTDIR="${D}" install
+
+rust_do_dist_install () {
+    rust_runx dist
+
+    for installer in "build/tmp/dist/rustc"*"/install.sh"; do
+        "${installer}" --destdir="${D}" --prefix="${prefix}" --disable-ldconfig
+    done
+
+    for installer in "build/tmp/dist/rust-std"*"/install.sh"; do
+        "${installer}" --destdir="${D}" --prefix="${prefix}" --disable-ldconfig
+    done
 
     # Install our custom target.json files
     local td="${D}${libdir}/rustlib/"
@@ -401,10 +377,6 @@ rust_do_install () {
         install -m 0644 "$tgt" "$td"
     done
 
-    # Remove any files directly installed into libdir to avoid
-    # conflicts between cross and native
-    rm -f ${D}${libdir}/lib*.so
-
     # cleanup after rust-installer since we don't need these bits
     rm ${D}/${libdir}/rustlib/install.log
     rm ${D}/${libdir}/rustlib/rust-installer-version
@@ -412,7 +384,8 @@ rust_do_install () {
     rm ${D}/${libdir}/rustlib/components
 }
 
+
 do_install () {
-    rust_do_install
+    rust_do_dist_install
 }
 # ex: sts=4 et sw=4 ts=8
diff --git a/recipes-devtools/rust/rust_1.15.1.bb b/recipes-devtools/rust/rust_1.15.1.bb
index 208ef97..c0feb61 100644
--- a/recipes-devtools/rust/rust_1.15.1.bb
+++ b/recipes-devtools/rust/rust_1.15.1.bb
@@ -1,13 +1,25 @@
 require rust.inc
 require rust-source-${PV}.inc
-
-EXTRA_OECONF = "--disable-rustbuild"
+require rust-snapshot-${PV}.inc
 
 SRC_URI += " \
-        file://rust-${PV}/0001-Target-add-default-target.json-path-libdir-rust-targ.patch \
         file://rust-${PV}/0003-std-thread_local-workaround-for-NULL-__dso_handle.patch \
         "
 
+# These are extracted from rustc/src/bootstrap/Cargo.toml.
+SRC_URI += " \
+	crate://crates.io/cmake/0.1.18 \
+	crate://crates.io/env_logger/0.3.5 \
+	crate://crates.io/filetime/0.1.10 \
+	crate://crates.io/gcc/0.3.40 \
+	crate://crates.io/getopts/0.2.14 \
+	crate://crates.io/libc/0.2.17 \
+	crate://crates.io/log/0.3.6 \
+	crate://crates.io/num_cpus/0.2.13 \
+	crate://crates.io/rustc-serialize/0.3.19 \
+	crate://crates.io/toml/0.1.30 \
+"
+
 DEPENDS += "rust-llvm (=${PV})"
 
 # Otherwise we'll depend on what we provide
diff --git a/recipes-devtools/rust/rust_1.20.0.bb b/recipes-devtools/rust/rust_1.20.0.bb
new file mode 100644
index 0000000..443f13e
--- /dev/null
+++ b/recipes-devtools/rust/rust_1.20.0.bb
@@ -0,0 +1,143 @@
+require rust.inc
+require rust-source-${PV}.inc
+require rust-snapshot-${PV}.inc
+
+# These are extracted from rustc/src/bootstrap/Cargo.toml via cargo-bitbake
+SRC_URI += " \
+crate://crates.io/advapi32-sys/0.2.0 \
+crate://crates.io/aho-corasick/0.5.3 \
+crate://crates.io/aho-corasick/0.6.3 \
+crate://crates.io/ansi_term/0.9.0 \
+crate://crates.io/atty/0.2.2 \
+crate://crates.io/backtrace-sys/0.1.11 \
+crate://crates.io/backtrace/0.3.2 \
+crate://crates.io/bitflags/0.8.2 \
+crate://crates.io/bitflags/0.9.1 \
+crate://crates.io/bufstream/0.1.3 \
+crate://crates.io/cfg-if/0.1.2 \
+crate://crates.io/clap/2.25.0 \
+crate://crates.io/cmake/0.1.24 \
+crate://crates.io/crossbeam/0.2.10 \
+crate://crates.io/curl-sys/0.3.14 \
+crate://crates.io/curl/0.4.7 \
+crate://crates.io/dbghelp-sys/0.2.0 \
+crate://crates.io/diff/0.1.10 \
+crate://crates.io/docopt/0.8.1 \
+crate://crates.io/dtoa/0.4.1 \
+crate://crates.io/env_logger/0.4.3 \
+crate://crates.io/error-chain/0.10.0 \
+crate://crates.io/error-chain/0.11.0-rc.2 \
+crate://crates.io/filetime/0.1.10 \
+crate://crates.io/flate2/0.2.19 \
+crate://crates.io/foreign-types/0.2.0 \
+crate://crates.io/fs2/0.4.2 \
+crate://crates.io/gcc/0.3.51 \
+crate://crates.io/getopts/0.2.14 \
+crate://crates.io/git2-curl/0.7.0 \
+crate://crates.io/git2/0.6.6 \
+crate://crates.io/glob/0.2.11 \
+crate://crates.io/hamcrest/0.1.1 \
+crate://crates.io/handlebars/0.26.2 \
+crate://crates.io/hex/0.2.0 \
+crate://crates.io/idna/0.1.2 \
+crate://crates.io/itoa/0.3.1 \
+crate://crates.io/jobserver/0.1.6 \
+crate://crates.io/kernel32-sys/0.2.2 \
+crate://crates.io/lazy_static/0.2.8 \
+crate://crates.io/libc/0.2.26 \
+crate://crates.io/libgit2-sys/0.6.12 \
+crate://crates.io/libssh2-sys/0.2.6 \
+crate://crates.io/libz-sys/1.0.16 \
+crate://crates.io/log/0.3.8 \
+crate://crates.io/lzma-sys/0.1.7 \
+crate://crates.io/matches/0.1.6 \
+crate://crates.io/mdbook/0.0.22 \
+crate://crates.io/memchr/0.1.11 \
+crate://crates.io/memchr/1.0.1 \
+crate://crates.io/miniz-sys/0.1.9 \
+crate://crates.io/miow/0.2.1 \
+crate://crates.io/net2/0.2.29 \
+crate://crates.io/num-bigint/0.1.39 \
+crate://crates.io/num-complex/0.1.38 \
+crate://crates.io/num-integer/0.1.34 \
+crate://crates.io/num-iter/0.1.33 \
+crate://crates.io/num-rational/0.1.38 \
+crate://crates.io/num-traits/0.1.39 \
+crate://crates.io/num/0.1.39 \
+crate://crates.io/num_cpus/1.6.2 \
+crate://crates.io/open/1.2.0 \
+crate://crates.io/openssl-probe/0.1.1 \
+crate://crates.io/openssl-sys/0.9.15 \
+crate://crates.io/openssl/0.9.15 \
+crate://crates.io/owning_ref/0.3.3 \
+crate://crates.io/percent-encoding/1.0.0 \
+crate://crates.io/pest/0.3.3 \
+crate://crates.io/pkg-config/0.3.9 \
+crate://crates.io/psapi-sys/0.1.0 \
+crate://crates.io/pulldown-cmark/0.0.14 \
+crate://crates.io/quick-error/1.2.0 \
+crate://crates.io/quote/0.3.15 \
+crate://crates.io/rand/0.3.15 \
+crate://crates.io/regex-syntax/0.3.9 \
+crate://crates.io/regex-syntax/0.4.1 \
+crate://crates.io/regex/0.1.80 \
+crate://crates.io/regex/0.2.2 \
+crate://crates.io/rls-data/0.7.0 \
+crate://crates.io/rls-span/0.4.0 \
+crate://crates.io/rustc-demangle/0.1.4 \
+crate://crates.io/rustc-serialize/0.3.24 \
+crate://crates.io/same-file/0.1.3 \
+crate://crates.io/scoped-tls/0.1.0 \
+crate://crates.io/semver-parser/0.7.0 \
+crate://crates.io/semver/0.7.0 \
+crate://crates.io/serde/1.0.10 \
+crate://crates.io/serde_derive/1.0.10 \
+crate://crates.io/serde_derive_internals/0.15.1 \
+crate://crates.io/serde_ignored/0.0.3 \
+crate://crates.io/serde_json/1.0.2 \
+crate://crates.io/shell-escape/0.1.3 \
+crate://crates.io/socket2/0.2.1 \
+crate://crates.io/stable_deref_trait/1.0.0 \
+crate://crates.io/strsim/0.6.0 \
+crate://crates.io/syn/0.11.11 \
+crate://crates.io/synom/0.11.3 \
+crate://crates.io/tar/0.4.13 \
+crate://crates.io/tempdir/0.3.5 \
+crate://crates.io/term_size/0.3.0 \
+crate://crates.io/termcolor/0.3.2 \
+crate://crates.io/textwrap/0.6.0 \
+crate://crates.io/thread-id/2.0.0 \
+crate://crates.io/thread_local/0.2.7 \
+crate://crates.io/thread_local/0.3.4 \
+crate://crates.io/toml/0.1.30 \
+crate://crates.io/toml/0.4.2 \
+crate://crates.io/unicode-bidi/0.3.4 \
+crate://crates.io/unicode-normalization/0.1.5 \
+crate://crates.io/unicode-segmentation/1.1.0 \
+crate://crates.io/unicode-width/0.1.4 \
+crate://crates.io/unicode-xid/0.0.4 \
+crate://crates.io/unreachable/1.0.0 \
+crate://crates.io/url/1.5.1 \
+crate://crates.io/utf8-ranges/0.1.3 \
+crate://crates.io/utf8-ranges/1.0.0 \
+crate://crates.io/vcpkg/0.2.2 \
+crate://crates.io/vec_map/0.8.0 \
+crate://crates.io/void/1.0.2 \
+crate://crates.io/walkdir/1.0.7 \
+crate://crates.io/winapi-build/0.1.1 \
+crate://crates.io/winapi/0.2.8 \
+crate://crates.io/wincolor/0.1.4 \
+crate://crates.io/ws2_32-sys/0.2.1 \
+crate://crates.io/xattr/0.1.11 \
+crate://crates.io/xz2/0.1.3 \
+crate://crates.io/yaml-rust/0.3.5 \
+"
+
+DEPENDS += "rust-llvm (=${PV})"
+
+# Otherwise we'll depend on what we provide
+INHIBIT_DEFAULT_RUST_DEPS_class-native = "1"
+# We don't need to depend on gcc-native because yocto assumes it exists
+PROVIDES_class-native = "virtual/${TARGET_PREFIX}rust"
+
+BBCLASSEXTEND = "native"
diff --git a/recipes-example/rustfmt/rustfmt_0.4.0.bb b/recipes-example/rustfmt/rustfmt_0.4.0.bb
deleted file mode 100644
index 17f2350..0000000
--- a/recipes-example/rustfmt/rustfmt_0.4.0.bb
+++ /dev/null
@@ -1,36 +0,0 @@
-inherit cargo
-
-SRC_URI = " \
-    crate://crates.io/aho-corasick/0.5.1 \
-    crate://crates.io/bitflags/0.5.0 \
-    crate://crates.io/diff/0.1.9 \
-    crate://crates.io/env_logger/0.3.2 \
-    crate://crates.io/getopts/0.2.14 \
-    crate://crates.io/kernel32-sys/0.2.1 \
-    crate://crates.io/libc/0.2.8 \
-    crate://crates.io/log/0.3.5 \
-    crate://crates.io/memchr/0.1.10 \
-    crate://crates.io/regex/0.1.58 \
-    crate://crates.io/regex-syntax/0.3.0 \
-    crate://crates.io/rustc-serialize/0.3.18 \
-    crate://crates.io/strings/0.0.1 \
-    crate://crates.io/syntex_syntax/0.30.0 \
-    crate://crates.io/term/0.2.14 \
-    crate://crates.io/toml/0.1.28 \
-    crate://crates.io/unicode-segmentation/0.1.2 \
-    crate://crates.io/unicode-xid/0.0.3 \
-    crate://crates.io/utf8-ranges/0.1.3 \
-    crate://crates.io/winapi/0.2.6 \
-    crate://crates.io/winapi-build/0.1.1 \
-    crate://crates.io/rustfmt/0.4.0 \
-"
-# rustfmt 0.5.0
-#LIC_FILES_CHKSUM=" \
-#    file://LICENSE-APACHE;md5=1836efb2eb779966696f473ee8540542 \
-#    file://LICENSE-MIT;md5=0b29d505d9225d1f0815cbdcf602b901 \
-#"
-LIC_FILES_CHKSUM="file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
-
-SUMMARY = "Format Rust Code"
-HOMEPAGE = "https://github.com/rust-lang-nursery/rustfmt"
-LICENSE = "MIT | Apache-2.0"
diff --git a/recipes-example/rustfmt/rustfmt_0.8.0.bb b/recipes-example/rustfmt/rustfmt_0.8.0.bb
new file mode 100644
index 0000000..0c94e38
--- /dev/null
+++ b/recipes-example/rustfmt/rustfmt_0.8.0.bb
@@ -0,0 +1,67 @@
+# Auto-Generated by cargo-bitbake 0.3.6
+#
+inherit cargo
+
+# If this is git based prefer versioned ones if they exist
+# DEFAULT_PREFERENCE = "-1"
+
+# how to get rustfmt could be as easy as but default to a git checkout:
+# SRC_URI += "crate://crates.io/rustfmt/0.8.0"
+SRC_URI += "git://github.com/rust-lang-nursery/rustfmt.git;protocol=https;branch=syntex"
+SRCREV = "4ed5a3bac71ed104e27797ee63729b0333e39d39"
+S = "${WORKDIR}/git"
+CARGO_SRC_DIR=""
+
+
+# please note if you have entries that do not begin with crate://
+# you must change them to how that package can be fetched
+SRC_URI += " \
+crate://crates.io/aho-corasick/0.6.2 \
+crate://crates.io/bitflags/0.8.0 \
+crate://crates.io/diff/0.1.10 \
+crate://crates.io/either/1.0.3 \
+crate://crates.io/env_logger/0.4.1 \
+crate://crates.io/getopts/0.2.14 \
+crate://crates.io/itertools/0.5.9 \
+crate://crates.io/kernel32-sys/0.2.2 \
+crate://crates.io/libc/0.2.21 \
+crate://crates.io/log/0.3.6 \
+crate://crates.io/memchr/1.0.1 \
+crate://crates.io/multimap/0.3.0 \
+crate://crates.io/regex-syntax/0.4.0 \
+crate://crates.io/regex/0.2.1 \
+crate://crates.io/rustc-serialize/0.3.22 \
+crate://crates.io/same-file/0.1.3 \
+crate://crates.io/strings/0.0.1 \
+crate://crates.io/syntex_errors/0.58.1 \
+crate://crates.io/syntex_pos/0.58.1 \
+crate://crates.io/syntex_syntax/0.58.1 \
+crate://crates.io/term/0.4.5 \
+crate://crates.io/thread-id/3.0.0 \
+crate://crates.io/thread_local/0.3.3 \
+crate://crates.io/toml/0.2.1 \
+crate://crates.io/unicode-segmentation/1.1.0 \
+crate://crates.io/unicode-xid/0.0.4 \
+crate://crates.io/unreachable/0.1.1 \
+crate://crates.io/utf8-ranges/1.0.0 \
+crate://crates.io/void/1.0.2 \
+crate://crates.io/walkdir/1.0.7 \
+crate://crates.io/winapi-build/0.1.1 \
+crate://crates.io/winapi/0.2.8 \
+"
+
+
+
+LIC_FILES_CHKSUM=" \
+file://LICENSE-APACHE;md5=1836efb2eb779966696f473ee8540542 \
+file://LICENSE-MIT;md5=0b29d505d9225d1f0815cbdcf602b901 \
+"
+
+SUMMARY = "Tool to find and fix Rust formatting issues"
+HOMEPAGE = "https://github.com/rust-lang-nursery/rustfmt"
+LICENSE = "Apache-2.0 | MIT"
+
+# includes this file if it exists but does not fail
+# this is useful for anything you may want to override from
+# what cargo-bitbake generates.
+include rustfmt.inc
diff --git a/scripts/cleanup-env.sh b/scripts/cleanup-env.sh
index 9e5ef8b..61c7573 100755
--- a/scripts/cleanup-env.sh
+++ b/scripts/cleanup-env.sh
@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/bin/bash -x
 
 # Only attempt to unmount if the directory is already mounted
 if mountpoint -q `pwd`/build; then
diff --git a/scripts/containerize.sh b/scripts/containerize.sh
index 499378b..9e28453 100755
--- a/scripts/containerize.sh
+++ b/scripts/containerize.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 # what container are we using to build this
-CONTAINER="starlabio/yocto:1.5"
+CONTAINER="cardoe/yocto:pyro"
 
 einfo() {
 	echo "$*" >&2