lets try this on the new Travis setup

[joshk]

please do not merge me, just yet, pretty please, sugar on top

[rust-highfive]

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[alexcrichton]

Looks like we timed out :(

[joshk]

ah ha! so timeouts aren't working of the container jobs, interesting. Well, let me modify the timeouts for this repo and we can restart (i'll do a new commit for that)

[joshk]

I've bumped the time limit to 120 minutes while we see if we can get this to finish before being killed.

[Gankra]

Yes, this is why I filed travis-ci/travis-ci#4521 and never fully went forward with sudo: 9000

IIRC, ccache was also broken with this mode, significantly exacerbating the timeout issue.

[alexcrichton]

Looks like we managed to just squeeze in with a 2hr timeout on that build, although a number of the tests failed:

failures:
    net::tcp::tests::clone_accept_concurrent
    net::tcp::tests::clone_accept_smoke
    net::tcp::tests::clone_while_reading
    net::tcp::tests::close_read_wakes_up
    net::tcp::tests::close_readwrite_smoke
    net::tcp::tests::connect_ip6_loopback
    net::tcp::tests::double_bind
    net::tcp::tests::fast_rebind
    net::tcp::tests::multiple_connect_interleaved_greedy_schedule
    net::tcp::tests::multiple_connect_interleaved_lazy_schedule_ip4
    net::tcp::tests::multiple_connect_serial_ip4
    net::tcp::tests::partial_read
    net::tcp::tests::read_eof_ip4
    net::tcp::tests::shutdown_smoke
    net::tcp::tests::smoke_test_ip6
    net::tcp::tests::socket_and_peer_name_ip4
    net::tcp::tests::tcp_clone_smoke
    net::tcp::tests::tcp_clone_two_read
    net::tcp::tests::tcp_clone_two_write
    net::tcp::tests::write_close
    net::udp::tests::socket_name_ip4
    net::udp::tests::socket_smoke_test_ip4
    net::udp::tests::udp_clone_smoke
    net::udp::tests::udp_clone_two_read
    net::udp::tests::udp_clone_two_write

They all failed for the same reason:

thread '<unnamed>' panicked at 'received error for `TcpListener::bind(&addr)`: Cannot assign requested address (os error 99)', src/libstd/net/tcp.rs:867

Which may be on our end, but I've only seen that when we have two standard library test suites running in parallel, which I don't think this is doing. Just to be sure, IPv6 is enabled for these new machines?

Also, as @gankro pointed out although ccache may not be necessary to get us under the time limit it's certainly useful for reducing build times, so just curious if you guys know if it's an issue on the new machines? If not we can just turn it on and it'll all start working once it's smoothed out in the backend :)

[joshk]

Caching isn't currently available on the new GCE setup, yet.

As for the failures, GCE VMs doesn't support IPv6 just yet, which might mean sticking to the Docker setup OR using Docker on the GCE hosts.

Happy to talk through how this might work.

[alexcrichton]

Ah ok, lack of IPv6 would do it for the failing tests, so we may have to stick to Docker for now. Is it planned to have IPv6 enabled on GCE?

The ccache problem isn't critical per se, just a nice to have. So long as the build doesn't time out it's not so bad to take a little longer to build LLVM, the build's already quite long anyway!

[joshk]

Hey Alex,

Sadly IPv6 is out of our control when it comes to GCE as GCE is just not capable of that right now.

What you could do though is use Docker inside of GCE and run your tests in there, thus giving you IPv6, and also allowing you to use the extra ram that the host has. This would also mean you could pre prep an image with any deps needed (like what is stored using ccache) to reduce test times.

If this is of interest, let me know how I can help.

[alexcrichton]

Hm, so we've long wanted automation using a stock build of LLVM instead, so this may be a good opportunity to take action on that! We can probably just use a vanilla ubuntu docker image and install stock LLVM at build time.

I may try playing around and see how far that gets us, thanks @joshk!

[joshk]

My pleasure @alexcrichton!

Let me know how you get on!

[alexcrichton]

Continuing this in #28500 where we can try out docker (but get the higher time limit on this repo as well)