Backport PR #14905: Gracefully handle encoding problems when querying external executables.

QuLogic · MeeseeksDev[bot] · commit db57ad3f4a25 · 2019-07-31T04:58:08.000Z
diff --git a/lib/matplotlib/__init__.py b/lib/matplotlib/__init__.py
@@ -321,7 +321,8 @@ def impl(args, regex, min_ver=None, ignore_exit_code=False):
         # at least min_ver (if set); else, raise FileNotFoundError.
         try:
             output = subprocess.check_output(
-                args, stderr=subprocess.STDOUT, universal_newlines=True)
+                args, stderr=subprocess.STDOUT,
+                universal_newlines=True, errors="replace")
         except subprocess.CalledProcessError as _cpe:
             if ignore_exit_code:
                 output = _cpe.output
