bug#43763: guix deploy sometimes fail with error "failed to start Guile on remote host 'myhost'"

[Maxim Cournoyer]

Hello,

Sometimes 'guix deploy' ends up failing near the end, with what looks
like:

--8<---------------cut here---------------start------------->8---
guix deploy: sending 180 store items (1,094 MiB) to 'myhost'...
[...] (progress bar)
guix deploy: error: failed to deploy mymachine: failed to start Guile on
remote host 'myhost'
--8<---------------cut here---------------end--------------->8---

Upon retrying the same 'guix deploy' command, it usually succeeds, e.g.:

--8<---------------cut here---------------start------------->8---
guix deploy: sending 8 store items (5 MiB) to 'myhost'...
guix deploy: successfully deployed mymachine
--8<---------------cut here---------------end--------------->8---

Thanks,

Maxim