Fix more exception slicing.
diff --git a/Lib/distutils/file_util.py b/Lib/distutils/file_util.py
index e29e90e..6919060 100644
--- a/Lib/distutils/file_util.py
+++ b/Lib/distutils/file_util.py
@@ -139,7 +139,7 @@
macostools.copy(src, dst, 0, preserve_times)
except os.error as exc:
raise DistutilsFileError(
- "could not copy '%s' to '%s': %s" % (src, dst, exc[-1]))
+ "could not copy '%s' to '%s': %s" % (src, dst, exc.args[-1]))
# If linking (hard or symbolic), use the appropriate system call
# (Unix only, of course, but that's the caller's responsibility)