llvm dev - Jan 2018 - something wrong with the trusty ppa?

I started getting this last night on Travis CI:


E: Failed to fetch
http://apt.llvm.org/trusty/pool/main/l/llvm-toolchain-5.0/llvm-5.0-dev_5.0.1~svn319952-1~exp1_amd64.deb
503  Connection timed out

see https://travis-ci.org/zig-lang/zig/jobs/326165753
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