bug#47808: guile-git-0.5.0.drv build failed

[Bone Baboon]

On an i686 computer when I run `guix pull --no-substitutes` I get this
error: 

```
Updating channel 'guix' from Git repository at 
'https://git.savannah.gnu.org/git/guix.git'...
Building from this channel:
  guix      https://git.savannah.gnu.org/git/guix.git   a5bbd38
building /gnu/store/2cllkgj32qqxvrlxkas27v6hd34g0b88-guile-git-0.5.0.drv...
/ 'check' phaseBacktrace:
          13 (primitive-load 
"/gnu/store/60dv1xf6dyzxiqg2kyd4rb3kpxrbk8as-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:
  2066:24  8 (run-with-store #<store-connection 256.99 3a0e10> _ 
#:guile-for-build _ #:system _ #:target _)
   1900:8  7 (_ _)
In ./guix/gexp.scm:
   256:18  6 (_ _)
   1137:2  5 (_ _)
   1003:2  4 (_ _)
    849:4  3 (_ _)
In ./guix/store.scm:
  1948:12  2 (_ #<store-connection 256.99 3a0e10>)
   1362:5  1 (map/accumulate-builds #<store-connection 256.99 3a0e10> _ _)
  1373:15  0 (_ #<store-connection 256.99 3a0e10> _ _)

./guix/store.scm:1373:15: ERROR:
  1. &store-protocol-error:
      message: "build of 
`/gnu/store/2cllkgj32qqxvrlxkas27v6hd34g0b88-guile-git-0.5.0.drv' failed"
      status: 100
guix pull: error: You found a bug: the program 
'/gnu/store/60dv1xf6dyzxiqg2kyd4rb3kpxrbk8as-compute-guix-derivation'
failed to compute the derivation for Guix (version: 
"a5bbd38fd131282e928144e869dcdf1e09259085"; system: "i686-linux";
host version: "c311147bd16aa0e5746d9cbf31502f5fd61e470c"; pull-version: 1).
Please report it by email to <bug-guix@gnu.org>.
```

`guix describe` outputs:

```
Generation 2    Apr 12 2021 20:12:42    (current)
  guix c311147
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: c311147bd16aa0e5746d9cbf31502f5fd61e470c
```