bug#36754: New linux-libre failed to build on armhf on Berlin

[Marius Bakke]

Mark H Weaver <address@hidden> writes:

> Hi Ricardo,
>
> Interesting.  I distinctly remember that there was no log file when I
> looked last time.  Hmm.
>
> Anyway, it seems that now, all of the failed builds have either build
> logs available or else information about which dependency failed.  I
> don't remember seeing any of this last time, but I'm glad to see it now.
>
> A pattern has now emerged, but I don't know what it means.  All of the
> armhf kernel builds failed except for linux-libre-arm-veyron-5.2.2,
> which succeeded:
>
>   https://ci.guix.gnu.org/build/1488502/details  (arm-veyron-5.2.2)
>
> Apart from this anomalous success, all of the armhf 5.2.2 and 4.19.60
> have a truncated log file:
>
>   https://ci.guix.gnu.org/build/1488517/details  (5.2.2)
>   https://ci.guix.gnu.org/build/1488503/details  (4.19.60)
>   https://ci.guix.gnu.org/build/1488513/details  (arm-generic-5.2.2)
>   https://ci.guix.gnu.org/build/1488519/details  (arm-generic-4.19.60)
>   https://ci.guix.gnu.org/build/1488504/details  (arm-omap2plus-5.2.2)
>   https://ci.guix.gnu.org/build/1488501/details  (arm-omap2plus-4.19.60)
>
> This pattern seems too regular to be a coincidence.  Can we find out
> which build machines were used for these builds?

I tried building 5.2.2 'interactively' on Berlin, and got an SSH error:

  CC [M]  net/openvswitch/vport-geneve.o
  CC [M]  net/openvswitch/vport-gre.o
  LD [M]  net/openvswitch/openvswitch.o
;;; [2019/07/23 05:14:53.501502, 0] read_from_channel_port: [GSSH ERROR] Error 
reading from the channel: #<input-output: channel (closed) 14c0e60>
Backtrace:
          16 (apply-smob/1 #<catch-closure b79640>)
In ice-9/boot-9.scm:
    705:2 15 (call-with-prompt _ _ #<procedure default-prompt-handle…>)
In ice-9/eval.scm:
    619:8 14 (_ #(#(#<directory (guile-user) bfb140>)))
In guix/ui.scm:
  1747:12 13 (run-guix-command _ . _)
In guix/scripts/offload.scm:
   781:22 12 (guix-offload . _)
In ice-9/boot-9.scm:
    829:9 11 (catch _ _ #<procedure 7f576678d910 at guix/ui.scm:703…> …)
    829:9 10 (catch _ _ #<procedure 7f576678d928 at guix/ui.scm:826…> …)
In guix/scripts/offload.scm:
   580:19  9 (process-request _ _ _ _ #:print-build-trace? _ # _ # _)
    531:6  8 (call-with-timeout _ _ _)
    361:2  7 (transfer-and-offload #<derivation /gnu/store/yfns7ga4…> …)
In ice-9/boot-9.scm:
    829:9  6 (catch _ _ #<procedure dbdab0 at guix/scripts/offload.…> …)
In guix/scripts/offload.scm:
    385:6  5 (_)
In guix/store.scm:
  1203:15  4 (_ #<store-connection 256.99 19a0ba0> _ _)
   692:11  3 (process-stderr #<store-connection 256.99 19a0ba0> _)
In guix/serialization.scm:
    87:11  2 (read-int _)
    73:12  1 (get-bytevector-n* #<input-output: channel (closed) 14…> …)
In unknown file:
           0 (get-bytevector-n #<input-output: channel (closed) 14c…> …)

ERROR: In procedure get-bytevector-n:
Throw to key `guile-ssh-error' with args `("read_from_channel_port" "Error 
reading from the channel" #<input-output: channel (closed) 14c0e60> #f)'.
guix build: error: build of 
`/gnu/store/yfns7ga468vmv9jn72snk79b16p8mhfa-linux-libre-5.2.2.drv' failed

real    637m24.906s
user    0m6.661s
sys     0m0.897s

Unfortunately I failed to record which machine was used and don't know a
way to find out after the fact.