Re: git submodule add broken (2.11.0-rc1): Cannot open git-sh-i18n

    $ git --version
    git version 1.8.5.6
    $ if [ "$LATEST_GIT" = "1" ]; then
    ...
         export PATH="/tmp/git:$PATH"
     fi
    ....
    make -j 8
    ...
    $ git --version
    git version 2.11.0-rc0

So you compile 2.11.0-rc0 yourself, but you do not install it, instead the $PATH is pointed to /tmp/git instead, however the later calls fail with:

    Can't open /home/travis/libexec/git-core/git-sh-i18n

which is where 1.8.5.6 is installed.

So you're running into an internationalization problem between 2 very different versions of Git (1.8 seems to be ancient)

Not sure if i can offer advice except from "Don't do that, instead install Git properly". ;)

Thanks, Stefan