When challenging guile, I get different hashes between our two CI servers:

LANG=C guix challenge guile
guix challenge: warning: could not determine current substitute URLs; using defaults
/gnu/store/4gvgcfdiz67wv04ihqfa8pqwzsb0qpv5-guile-3.0.9 contents differ:
  local hash: 1mn4ahip1cywc2nkq7lbgjfgdws9r283r3r12yq6ijg1b2zi5yz6
  https://ci.guix.gnu.org/nar/lzip/4gvgcfdiz67wv04ihqfa8pqwzsb0qpv5-guile-3.0.9: 1mn4ahip1cywc2nkq7lbgjfgdws9r283r3r12yq6ijg1b2zi5yz6
  https://bordeaux.guix.gnu.org/nar/lzip/4gvgcfdiz67wv04ihqfa8pqwzsb0qpv5-guile-3.0.9: 17gvhxrcngyjjy2mlr9j2x6xv0x16b7dnf6dpz00vfqvddq9i2dz
  differing file:
    /lib/guile/3.0/ccache/ice-9/ftw.go

1 store items were analyzed:
  - 0 (0.0%) were identical
  - 1 (100.0%) differed
  - 0 (0.0%) were inconclusive

Is this known?

Best wishes,
Arne
-- 
Unpolitisch sein
heißt politisch sein,
ohne es zu merken.
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