bug#60694: Issue building derivations in 1.4.0

[Tom Parker-Shemilt]

==> virtualbox-iso: Backtrace:
==> virtualbox-iso:           18 (primitive-load
"/gnu/store/lzinbzm0hxvnz11c4cin1ml9ybhrg7r5-compute-guix-derivation")
==> virtualbox-iso: In ice-9/eval.scm:
==> virtualbox-iso:     155:9 17 (_ _)
==> virtualbox-iso:     159:9 16 (_
#(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#<directory (guile-u?> ?) ?) ?) ?) ?)
?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?))
==> virtualbox-iso: In ice-9/boot-9.scm:
==> virtualbox-iso:     152:2 15 (with-fluid* _ _ _)
==> virtualbox-iso:     152:2 14 (with-fluid* _ _ _)
==> virtualbox-iso: In ./guix/store.scm:
==> virtualbox-iso:   2170:24 13 (run-with-store #<store-connection
256.99 7f9d80810140> #<procedure 7f9d65ce5460 at ./guix/self.scm:13?>
?)
==> virtualbox-iso:    1998:8 12 (_ #<store-connection 256.99 7f9d80810140>)
==> virtualbox-iso: In ./guix/gexp.scm:
==> virtualbox-iso:    299:22 11 (_ #<store-connection 256.99 7f9d80810140>)
==> virtualbox-iso:    1180:2 10 (_ #<store-connection 256.99 7f9d65cd23c0>)
==> virtualbox-iso:    1046:2  9 (_ #<store-connection 256.99 7f9d65cd23c0>)
==> virtualbox-iso:     892:4  8 (_ #<store-connection 256.99 7f9d65cd23c0>)
==> virtualbox-iso: In ./guix/store.scm:
==> virtualbox-iso:   2055:12  7 (_ #<store-connection 256.99 7f9d65cd23c0>)
==> virtualbox-iso:   1407:13  6 (map/accumulate-builds
#<store-connection 256.99 7f9d65cd23c0> #<procedure 7f9d7416d5e0 at
./guix/stor?> ?)
==> virtualbox-iso:   1407:13  5 (map/accumulate-builds
#<store-connection 256.99 7f9d65cd23c0> #<procedure 7f9d678f2540 at
./guix/stor?> ?)
==> virtualbox-iso:   1407:13  4 (map/accumulate-builds
#<store-connection 256.99 7f9d65cd23c0> #<procedure 7f9d73154a60 at
./guix/stor?> ?)
==> virtualbox-iso:   1407:13  3 (map/accumulate-builds
#<store-connection 256.99 7f9d65cd23c0> #<procedure 7f9d6b7f4da0 at
./guix/stor?> ?)
==> virtualbox-iso:    1403:5  2 (map/accumulate-builds
#<store-connection 256.99 7f9d65cd23c0> #<procedure 7f9d65250be0 at
./guix/stor?> ?)
==> virtualbox-iso:   1419:15  1 (_ #<store-connection 256.99
7f9d65cd23c0> ("/gnu/store/p23y74y51gj4vml3mjlg9swx0gg4k22s-ruby-2.7.7.d?")
?)
==> virtualbox-iso:   1419:15  0 (loop #f)
==> virtualbox-iso:
==> virtualbox-iso: ./guix/store.scm:1419:15: In procedure loop:
==> virtualbox-iso: ERROR:
==> virtualbox-iso:   1. &store-protocol-error:
==> virtualbox-iso:       message: "some substitutes for the outputs
of derivation `/gnu/store/p23y74y51gj4vml3mjlg9swx0gg4k22s-ruby-2.7.7.drv'
failed (usually happens due to networking issues); try `--fallback' to
build derivation from source "
==> virtualbox-iso:       status: 1
==> virtualbox-iso: guix pull: error: You found a bug: the program
'/gnu/store/lzinbzm0hxvnz11c4cin1ml9ybhrg7r5-compute-guix-derivation'
==> virtualbox-iso: failed to compute the derivation for Guix
(version: "8e2f32cee982d42a79e53fc1e9aa7b8ff0514714"; system:
"x86_64-linux";
==> virtualbox-iso: host version: "1.4.0"; pull-version: 1).
==> virtualbox-iso: Please report the COMPLETE output above by email
to <bug-guix@gnu.org>.