bug#48376: Failure in "guix pull"

[Konrad Hinsen]

Today's "guix pull" resulted in an error message that ends with a
request for a bug report. So here it comes:

===========================================================================
Updating channel 'guix-past' from Git repository at 
'https://gitlab.inria.fr/guix-hpc/guix-past'...
Updating channel 'guix' from Git repository at 
'https://git.savannah.gnu.org/git/guix.git'...
guix pull: warning: moving channel 'guix' from 
3e4f6d2bbc6f0f81c1487eb1bb69d8e9fe9bdbd7 to unrelated commit 
34985fb6ae7deffd40443766f5408649a0cbbff2
Authenticating channel 'guix', commits 9edb3f6 to 34985fb (777 new commits)...
Building from these channels:
  guix      https://git.savannah.gnu.org/git/guix.git   34985fb
  guix-past https://gitlab.inria.fr/guix-hpc/guix-past  0f892e4
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
 module-import  2KiB                   25KiB/s 00:00 [##################] 100.0%

 module-import-compiled  1.4MiB       1.7MiB/s 00:01 [##################] 100.0%

 compute-guix-derivation  1005B         9KiB/s 00:00 [##################] 100.0%

Computing Guix derivation for 'x86_64-linux'... |Backtrace:
          13 (primitive-load 
"/gnu/store/jbz265j88niryci4f80zfwq92vjy2xam-compute-guix-derivation")
In ice-9/eval.scm:
    155:9 12 (_ _)
    159:9 11 (_ #(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#<directory (guile-u?> ?) ?) ?) 
?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?))
In ice-9/boot-9.scm:
    152:2 10 (with-fluid* _ _ _)
    152:2  9 (with-fluid* _ _ _)
In ./guix/store.scm:
  2076:24  8 (run-with-store #<store-connection 256.99 7f46cd7e73c0> _ 
#:guile-for-build _ #:system _ #:target _)
   1910:8  7 (_ _)
In ./guix/gexp.scm:
   256:18  6 (_ _)
   1137:2  5 (_ _)
   1003:2  4 (_ _)
    849:4  3 (_ _)
In ./guix/store.scm:
  1958:12  2 (_ #<store-connection 256.99 7f46cd7e73c0>)
   1372:5  1 (map/accumulate-builds #<store-connection 256.99 7f46cd7e73c0> _ _)
  1383:15  0 (_ #<store-connection 256.99 7f46cd7e73c0> _ _)

./guix/store.scm:1383:15: ERROR:
  1. &store-protocol-error:
      message: "some substitutes for the outputs of derivation 
`/gnu/store/8kj83zhzcfpp7df9jxsyarnkrbvglwri-guile-json-3.5.0.drv' failed 
(usually happens due to networking issues); try `--fallback' to build 
derivation from source "
      status: 1
guix pull: error: You found a bug: the program 
'/gnu/store/jbz265j88niryci4f80zfwq92vjy2xam-compute-guix-derivation'
failed to compute the derivation for Guix (version: 
"34985fb6ae7deffd40443766f5408649a0cbbff2"; system: "x86_64-linux";
host version: "3e4f6d2bbc6f0f81c1487eb1bb69d8e9fe9bdbd7"; pull-version: 1).
Please report it by email to <bug-guix@gnu.org>.
===========================================================================