Travis is dying

Aside from the previous instabilities and random timeouts, it now seems to fail even trivial (& fundamental) tasks like downloading binaries consistently (4x in a row over the course of 24h in https://github.com/conda-forge/openblas-feedstock/pull/122, each time across all 4 jobs in the build)

Downloading https://github.com/xianyi/OpenBLAS/archive/v0.3.18.tar.gz
Error: HTTP 000 CONNECTION FAILED for url <https://github.com/xianyi/OpenBLAS/archive/v0.3.18.tar.gz>

I don’t know when this will resolve itself, but just thought I’d open an issue to discuss the situation (e.g. move all PPC builds to azure?).

[h-vetinari]

To be honest, after a year of flakiness, I have very limited patience left for debugging Travis… For the feedstocks I maintain more or less by myself, I’ll see if emulation through azure works, otherwise I’ll start dropping PPC.

[pkgw]

Fully agree that (1) we should move away from Travis swiftly and (2) Docker net=host is to be treated with great care at a minimum and avoided when possible. I do, however, continue to believe that in this particular application it is not opening up any new risks.