Hydra eval error

[edolstra]

Describe the bug

Hydra is currently giving the following eval error on the nix:master jobset:

in job ‘shellInputs.x86_64-darwin’:
error:
       … while calling the 'getAttr' builtin
         at <nix/derivation-internal.nix>:44:19:
           43|       value = commonAttrs // {
           44|         outPath = builtins.getAttr outputName strict;
             |                   ^
           45|         drvPath = strict.drvPath;

       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:34:12:
           33|
           34|   strict = derivationStrict drvAttrs;
             |            ^
           35|

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: access to URI 'https://releases.nixos.org/nixpkgs/nixpkgs-24.05pre596549.db001797591b/nixexprs.tar.xz' is forbidden in restricted mode

Apparently the first failing evaluation was 85a3071 (#12349), though I can't see anything in there that would cause this error. (It might be a different eval error, though.) CC @roberth

Steps To Reproduce

Expected behavior

Metadata

Additional context

Checklist

• checked latest Nix manual (source)
• checked open bug issues and pull requests for possible duplicates

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