display logs on error

Author: johanneskoester

.travis.yml

@@ -24,4 +24,4 @@ script:
   - source activate snakemake
   # run the workflow
   # put a test case into the subfolder .test (e.g., use https://github.com/snakemake-workflows/ngs-test-data as a submodule)
-  - snakemake --use-conda --directory .test
+  - snakemake --use-conda --directory .test || (for f in .test/logs/*; do echo $f; cat $f; done; for f in .test/logs/*/*; do echo $f; cat $f; done; exit 1)