Improve pylint error message with an old version is used.

Improve pylint error message with an old version is used.

Instead of crashing, prints an error message.

BUG=
TEST=


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=106867

[Dirk Pranke, 2011-10-21 21:15:33]

lgtm

[commit-bot: I haz the power, 2011-10-23 00:14:05]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/maruel@chromium.org/8363030/3

[commit-bot: I haz the power, 2011-10-23 00:18:44]

Presubmit check for 8363030-3 failed and returned exit status 1.

svn: Could not open the requested SVN filesystem
Running presubmit commit checks ...
Syncing rietveld...

** Presubmit Messages **
You should install python 2.5 and run ln -s $(which python2.5) python.
A great place to put this symlink is in depot_tools.
Otherwise, you break depot_tools on python 2.5, you get to keep the pieces.

** Presubmit ERRORS **
Failed to sync rietveld
Command svn up -q -r 681 returned non-zero exit status 1 in
/mnt/data/b/commit-queue/workdir/tools/depot_tools/tests/_rietveld

Presubmit checks took 278.1s to calculate.

[commit-bot: I haz the power, 2011-10-23 00:30:21]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/maruel@chromium.org/8363030/3

[commit-bot: I haz the power, 2011-10-23 00:35:59]

Change committed as 106867

[M-A Ruel, 2011-10-23 00:38:31]

On 2011/10/23 00:18:44, I haz the power (commit-bot) wrote:
> Failed to sync rietveld
> Command svn up -q -r 681 returned non-zero exit status 1 in
> /mnt/data/b/commit-queue/workdir/tools/depot_tools/tests/_rietveld

Looks like google code failure, since the presubmit check was checking out
rietveld from google code with svn and it passed the next time.