Travis failing for Linux clang builds about grid

[paboyle]

Damned CI people should use a caching proxy.

[mspraggs]

So something I found Antonin which may be useful if you decide to go down the Vagrant route and build the packages yourself: Travis makes available the virtual machine used for their builds, and the one used by the currently failing build is at this revision. They provide a Vagrantfile too, so it's relatively easy to start up the virtual machine and ssh in. Only problem is that llvm 3.8 requires gcc 4.9 to compile, so you'd need to install that from the Ubuntu toolchain PPA before you can build clang. This also means gcc 4.9 becomes a dependency, which is a bit frustrating. Anyway, good luck :-P

[aportelli]

I fixed the Travis Linux builds using clang. The test is failing but this is not a compilation issue so I will close this issue.