Merge pull request matplotlib#10217 from QuLogic/travis-fixup

TST: Don't use set -e.

Author: anntzer

ci/travis/test_script.sh

@@ -1,6 +1,6 @@
 #! /bin/bash
 
-set -ev
+set -ex
 
 # This script is meant to be called by the "script" step defined in
 # .travis.yml. See http://docs.travis-ci.com/ for more details.
@@ -16,8 +16,5 @@ if [[ $DELETE_FONT_CACHE == 1 ]]; then
 fi
 
 echo The following args are passed to pytest $PYTEST_ARGS $RUN_PEP8
-if [[ $TRAVIS_OS_NAME == 'osx' ]]; then
-  pytest $PYTEST_ARGS $RUN_PEP8
-else
-  gdb -return-child-result -batch -ex r -ex bt --args python $PYTHON_ARGS -m pytest $PYTEST_ARGS $RUN_PEP8
-fi
+
+pytest $PYTEST_ARGS $RUN_PEP8