make after-success more verbose

Author: mattip

.travis.yml

@@ -86,6 +86,7 @@ script:
         /bin/bash -xe /openblas/tools/build_wheel.sh
 
 after_success:
+    - set +ex
     - sudo chmod -R a+w /home/travis/.cache
     - pip install -q git+https://github.com/Anaconda-Platform/[email protected]
     # Upload libraries to the shared staging area on anaconda.org