Subject: bug#35139: closed (Re: bug#35139: Rust builds systematically time out)

From: [email-masked] (GNU bug Tracking System)
Date: Sun, 21 Nov 2021 06:10:02 +0000

Your bug report

#35139: Rust builds systematically time out

which was filed against the guix package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to [email-masked].

-- 
35139: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=35139
GNU Bug Tracking System
Contact [email-masked] with problems

Subject: Re: bug#35139: Rust builds systematically time out
From: Maxim Cournoyer <[email-masked]>
To: Ludovic Courtès <[email-masked]>
Cc: Danny Milosavljevic <[email-masked]>, [email-masked], Ivan Petkov <[email-masked]>
Date: Sun, 21 Nov 2021 01:09:23 -0500
List-Id: <debbugs-submit.debbugs.gnu.org>

Hello,

Ludovic Courtès <[email-masked]> writes:

> Hello,
>
> On berlin, Rust 1.24.1 builds systematically exceed the timeout:
>
> Building stage1 compiler artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
>    Compiling arena v0.0.0 (file:///tmp/guix-build-rust-1.24.1.drv-0/rustc-1.24.1-src/src/libarena)
>    Compiling rustc_driver v0.0.0 (file:///tmp/guix-build-rust-1.24.1.drv-0/rustc-1.24.1-src/src/librustc_driver)
>
> [...]
>
>    Compiling rls-data v0.14.0
>    Compiling rustc_data_structures v0.0.0 (file:///tmp/guix-build-rust-1.24.1.drv-0/rustc-1.24.1-src/src/librustc_data_structures)
>    Compiling flate2 v1.0.1
>    Compiling syntax_pos v0.0.0 (file:///tmp/guix-build-rust-1.24.1.drv-0/rustc-1.24.1-src/src/libsyntax_pos)
>    Compiling rustc_errors v0.0.0 (file:///tmp/guix-build-rust-1.24.1.drv-0/rustc-1.24.1-src/src/librustc_errors)
>    Compiling backtrace v0.3.4
> guix offload: error: timeout expired while offloading '/gnu/store/61bd22d9mg3xl260jwddisiahh3kmanj-rust-1.24.1.drv'
>
> Strangely, the build lasts ~9000 seconds (2.5 hours) on the front-end
> node of berlin¹, and the timeout for guix-daemon on berlin is 6h (see
> guix-maintenance.git) while the max-silent-time is 1h.

With the recent improvement in the Rust bootstrap toolchains, I'm
considering this fixed.

If there are still timeouts, Cuirass is now supposed to honor the
'timeout' property.

Closing!

Maxim

Subject: Rust builds systematically time out
From: Ludovic Courtès <[email-masked]>
To: [email-masked]
Cc: Danny Milosavljevic <[email-masked]>, Ivan Petkov <[email-masked]>
Date: Thu, 04 Apr 2019 10:59:52 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

Hello,

On berlin, Rust 1.24.1 builds systematically exceed the timeout:

--8<---------------cut here---------------start------------->8---
Building stage1 compiler artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
   Compiling arena v0.0.0 (file:///tmp/guix-build-rust-1.24.1.drv-0/rustc-1.24.1-src/src/libarena)
   Compiling rustc_driver v0.0.0 (file:///tmp/guix-build-rust-1.24.1.drv-0/rustc-1.24.1-src/src/librustc_driver)

[...]

   Compiling rls-data v0.14.0
   Compiling rustc_data_structures v0.0.0 (file:///tmp/guix-build-rust-1.24.1.drv-0/rustc-1.24.1-src/src/librustc_data_structures)
   Compiling flate2 v1.0.1
   Compiling syntax_pos v0.0.0 (file:///tmp/guix-build-rust-1.24.1.drv-0/rustc-1.24.1-src/src/libsyntax_pos)
   Compiling rustc_errors v0.0.0 (file:///tmp/guix-build-rust-1.24.1.drv-0/rustc-1.24.1-src/src/librustc_errors)
   Compiling backtrace v0.3.4
guix offload: error: timeout expired while offloading '/gnu/store/61bd22d9mg3xl260jwddisiahh3kmanj-rust-1.24.1.drv'
--8<---------------cut here---------------end--------------->8---

Strangely, the build lasts ~9000 seconds (2.5 hours) on the front-end
node of berlin¹, and the timeout for guix-daemon on berlin is 6h (see
guix-maintenance.git) while the max-silent-time is 1h.

The build nodes may be slower than the front-end, but still, it seems
unlikely that it would take more than 6h there.  (That could happen if
the test suite, which lasts 2.1h, were “embarrassingly parallel”, but
we’re running tests with ‘-j1’.)

To summarize, there are two problems:

  1. Rust takes too long to build.  What can we do about it?  Enable
     parallel builds?

  2. Offloaded builds seem to time out prematurely or something.

Thoughts?

Ludo’.

¹ See <https://ci.guix.info/log/rkrnm3rr7g6fhr17160vn1mz5rdzh9lv-rust-1.24.1>
  for timings.