some debugging

Author: mark-i-m

.travis.yml

@@ -15,6 +15,9 @@ install:
 - cargo install mdbook-linkcheck --version 0.5.0
 script:
 - git rebase origin master # this will exit with an error on conflict
+- git status
+- git rev-parse HEAD
+- ls -lahR
 - mdbook build
 notifications:
   email: