Merge pull request #201 from takluyver/patch-1

Better error message when try_to_run command fails

Author: thomasrockhu

codecov/__init__.py

@@ -177,7 +177,7 @@ def try_to_run(cmd, shell=True):
     try:
         return check_output(cmd, shell=shell)
     except subprocess.CalledProcessError as e:
-        write('    Error running `%s`: %s' % (cmd, str(getattr(e, 'output', str(e)))))
+        write('    Error running `%s`: %s' % (cmd, e.output or str(e)))
 
 def run_python_coverage(args):
     """Run the Python coverage tool