bug#38229: Frequent offloading failures on berlin

[zimoun]

Hi Marius,

On Sat, 16 Nov 2019 at 14:02, Marius Bakke <mbakke@fastmail.com> wrote:

> Since recently, Berlin sporadically fails during offloading with a
> message such as...
>
> Backtrace:
>           10 (apply-smob/1 #<catch-closure 7fa16031f1e0>)
> In ice-9/boot-9.scm:
>     705:2  9 (call-with-prompt _ _ #<procedure default-prompt-handle…>)
> In ice-9/eval.scm:
>     619:8  8 (_ #(#(#<directory (guile-user) 7fa15ffb5140>)))
> In guix/ui.scm:
>   1730:12  7 (run-guix-command _ . _)
> In guix/scripts/offload.scm:
>    768:22  6 (guix-offload . _)
> In ice-9/boot-9.scm:
>     829:9  5 (catch _ _ #<procedure 7fa15fef9018 at guix/ui.scm:642…> …)
>     829:9  4 (catch _ _ #<procedure 7fa15fef9030 at guix/ui.scm:765…> …)
> In guix/scripts/offload.scm:
>    549:21  3 (process-request _ _ #<derivation /gnu/store/51qzn6nhb…> …)
>    481:36  2 (choose-build-machine _)
> In guix/inferior.scm:
>     157:7  1 (port->inferior _ _)
>     204:2  0 (read-repl-response _)
>
> guix/inferior.scm:204:2: In procedure read-repl-response:
> Throw to key `match-error' with args `("match" "no matching pattern" #<eof>)'.
> guix build: error: unexpected EOF reading a line
>
> This seems to happen randomly, at different times and different machines.

Does this bug is still relevant?  First, it appears transient and second
the CI is already work-in-progress.

If it is not transient, could you add more context when it happens?


All the best,
simon