[GTK] Fix logging details after r197505 (Run the run-benchmark script on the performance bot.)
https://bugs.webkit.org/show_bug.cgi?id=154595

Unreviewed.

* Scripts/webkitpy/benchmark_runner/run_benchmark.py:
(start): Use logging.exception when a test fails in order to get the details about the error.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@197615 268f45cc-cd09-0410-ab3c-d52691b4dbfc
2 files changed