logging: use warning instead warn

The warn method is deprecated. We should use the documented warning instead.

Quoting from the python's official doc:
"""
Note: There is an obsolete method warn which is functionally identical to warning.
      As warn is deprecated, please do not use it - use warning instead.
"""

(From OE-Core rev: cc771aa4b74f222f1bea38b0b50196b2fbc97ab4)

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oe/terminal.py

@@ -112,7 +112,7 @@ class Screen(Terminal):
             bb.event.fire(bb.event.LogExecTTY(msg, "screen -r %s" % s_id,
                                               0.5, 10), d)
         else:
-            logger.warn(msg)
+            logger.warning(msg)
 
 class TmuxRunning(Terminal):
     """Open a new pane in the current running tmux window"""
@@ -168,7 +168,7 @@ class Tmux(Terminal):
         if d:
             bb.event.fire(bb.event.LogExecTTY(msg, attach_cmd, 0.5, 10), d)
         else:
-            logger.warn(msg)
+            logger.warning(msg)
 
 class Custom(Terminal):
     command = 'false' # This is a placeholder
@@ -180,7 +180,7 @@ class Custom(Terminal):
             if not '{command}' in self.command:
                 self.command += ' {command}'
             Terminal.__init__(self, sh_cmd, title, env, d)
-            logger.warn('Custom terminal was started.')
+            logger.warning('Custom terminal was started.')
         else:
             logger.debug(1, 'No custom terminal (OE_TERMINAL_CUSTOMCMD) set')
             raise UnsupportedTerminal('OE_TERMINAL_CUSTOMCMD not set')

meta/lib/oeqa/selftest/context.py

@@ -159,7 +159,7 @@ class OESelftestTestContextExecutor(OETestContextExecutor):
                 os.chdir(builddir)
 
             if not "meta-selftest" in self.tc.td["BBLAYERS"]:
-                self.tc.logger.warn("meta-selftest layer not found in BBLAYERS, adding it")
+                self.tc.logger.warning("meta-selftest layer not found in BBLAYERS, adding it")
                 meta_selftestdir = os.path.join(
                     self.tc.td["BBLAYERS_FETCH_DIR"], 'meta-selftest')
                 if os.path.isdir(meta_selftestdir):

meta/lib/oeqa/utils/qemurunner.py

@@ -393,7 +393,7 @@ class QemuRunner:
                 # qemu-system behaves well and a SIGTERM is enough
                 os.kill(self.qemupid, signal.SIGTERM)
             except ProcessLookupError as e:
-                self.logger.warn('qemu-system ended unexpectedly')
+                self.logger.warning('qemu-system ended unexpectedly')
 
     def stop_thread(self):
         if self.thread and self.thread.is_alive():
@@ -470,7 +470,7 @@ class QemuRunner:
 
     def _dump_host(self):
         self.host_dumper.create_dir("qemu")
-        self.logger.warn("Qemu ended unexpectedly, dump data from host"
+        self.logger.warning("Qemu ended unexpectedly, dump data from host"
                 " is in %s" % self.host_dumper.dump_dir)
         self.host_dumper.dump_host()