bug#26976: On Hydra, offload crashes while trying to build linux-libre source

[Mark H Weaver]

address@hidden (Ludovic Courtès) writes:

> address@hidden (Ludovic Courtès) skribis:
>
>> Mark H Weaver <address@hidden> skribis:
>>
>>> address@hidden (Ludovic Courtès) writes:
>>>> I’ve stopped the queue-runner while investigating.  To be continued…
>>>
>>> For now, I would suggest downgrading the 'guix' on Hydra to be based on
>>> guile-2.0 again, so that it can be building things while we sort this
>>> out.  What do you think?
>>
>> Sounds reasonable, let’s give it a try.
>>
>> I’ve added a ‘guile2.0-guix’ package in commit
>> 82ce81ba06ea1babfdb0d1c447e972461c1d3018.
>
> I’ve installed ‘guile2.0-guix’ on hydra.gnu.org, and it’s now running it
> for guix-daemon and ‘guix publish’.  Let’s see…

We're now seeing many builds aborting with errors like this:

  guix offload: error: failed to connect to `#<input-output: channel (open) 
269a9f0>': Protocol error

For example:

  https://hydra.gnu.org/build/2104072
  https://hydra.gnu.org/build/2102781
  https://hydra.gnu.org/build/1964009
  https://hydra.gnu.org/build/1963815

       Mark