Bug#881663: Missing build on mips64el and mipsel

[Emilio Pozuelo Monfort]

Control: retitle -1 llvm-toolchain-5.0: FTBFS on mips64el: slow tests?

On Mon, 13 Nov 2017 17:32:43 -0500 Nicholas D Steeves <nsteeves at gmail.com> wrote:
> Package: llvm-toolchain-5.0
> Version: 1:5.0-4
> Severity: important
> Control: block 880669 by -1
> 
> Dear LLVM maintainers,
> 
> In #873410 a transition to llvm-5.0-dev was requested for irony-mode.
> Would you please fix llvm-toolchain-5.0 FTBS (maybe self-tests?) on
> mips64el and mipsel?

This is only failing on mips64el on experimental (which will be uploaded to sid
soon I guess).

Sylvestre couldn't reproduce this on a porterbox:

08:26 < Sylvestre> oh, llvm 5.0 built all night on mips64el to reproduce the
issue... and no issue on the porterbox :'(

So maybe this is just the tests being too slow on the buildd, where we have a
timeout if there's no output on stdout. ISTR some output is not enough, but new
lines are needed to reset the timer, and the tests just print some progress on
the same line:

Testing: 0 .. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90..

A wild guess: make that print a newline every now and then (e.g. after each 10).
If the whole test suite is taking over 150 minutes (the timeout on mips64el),
this should prevent the timeout from killing the whole build.

It'd be good to fix this so we can get 5.0 in shape for testing.

Cheers,
Emilio