these 2 derivations will be built:
  /nix/store/jr7510b30zwnrng2rl2p53g35jrbyxw5-nix-2.36.0pre20260913_dafb558.drv
  /nix/store/46w2asa0mcj19h2aaz2py5kgxcq6q7zw-nix-functional-tests-2.36.0pre20260913_dafb558.drv
error: Cannot build '/nix/store/46w2asa0mcj19h2aaz2py5kgxcq6q7zw-nix-functional-tests-2.36.0pre20260913_dafb558.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/7rj8cmdwfyr71n1w7pbfcks8izc2hwjk-nix-functional-tests-2.36.0pre20260913_dafb558
       Last 25 log lines:
       > 209/223 local-overlay-store - nix-functional-tests:add-lower                OK              1.21s
       > 210/223 main - nix-functional-tests:timeout                                 OK              6.70s
       > 211/223 flakes - nix-functional-tests:non-flake-inputs                      OK              2.37s
       > 212/223 local-overlay-store - nix-functional-tests:delete-duplicate         OK              1.73s
       > 213/223 local-overlay-store - nix-functional-tests:check-post-init          OK              2.26s
       > 214/223 local-overlay-store - nix-functional-tests:build                    OK              2.69s
       > 215/223 local-overlay-store - nix-functional-tests:verify                   OK              2.95s
       > 216/223 local-overlay-store - nix-functional-tests:optimise                 OK              2.92s
       > 217/223 local-overlay-store - nix-functional-tests:delete-refs              OK              3.46s
       > 218/223 local-overlay-store - nix-functional-tests:gc                       OK              3.42s
       > 219/223 git-hashing - nix-functional-tests:fixed                            OK              4.70s
       > 220/223 flakes - nix-functional-tests:flakes                                OK              7.34s
       > 221/223 local-overlay-store - nix-functional-tests:stale-file-handle        OK              5.06s
       > 222/223 flakes - nix-functional-tests:mercurial                             OK             10.51s
       > 223/223 main - nix-functional-tests:lang                                    OK             21.70s
       >
       > Summary of Failures:
       >
       >  49/223 main - nix-functional-tests:impure-derivations                      FAIL            0.55s   exit status 1
       >
       > Ok:                214
       > Fail:              1
       > Skipped:           8
       >
       > Full log written to /build/source/tests/functional/build/meson-logs/testlog.txt
       For full logs, run:
         nix log /nix/store/46w2asa0mcj19h2aaz2py5kgxcq6q7zw-nix-functional-tests-2.36.0pre20260913_dafb558.drv