these 13 derivations will be built:
  /nix/store/1wsmlgfkmla2zxzh7b0z62ws6kbkax2h-nix-store-2.36.0pre.drv
  /nix/store/hs4f07q7p01m4gqjzl8z8zyyd5ls9kxq-nix-fetchers-2.36.0pre.drv
  /nix/store/mhvbdhxgal7akxqfd0s3flm1cgbvxmlc-nix-expr-2.36.0pre.drv
  /nix/store/27cn4nhrysygaw8nri9avqpfsx38g956-nix-flake-2.36.0pre.drv
  /nix/store/mpmbsc7kndddjib5d4qy1rv7g77gj7jm-nix-store-c-2.36.0pre.drv
  /nix/store/a0nsq9c3s8dl8ca3lh259bi2v03yxjmq-nix-expr-c-2.36.0pre.drv
  /nix/store/9733iyk8k4ca1ci396ya6a85adg9qx6s-nix-fetchers-c-2.36.0pre.drv
  /nix/store/3hxnjks1msqgap0h9jc306a4dp7vigjl-nix-flake-c-2.36.0pre.drv
  /nix/store/k781lhdsy52gcazsh9mf6l5df4fnqwkh-nix-main-2.36.0pre.drv
  /nix/store/l99m326db6cg216ypwnyi2z7xwrc62g2-nix-main-c-2.36.0pre.drv
  /nix/store/w0awxlxk8qghiw87wliq99wc2vzq0gzr-nix-cmd-2.36.0pre.drv
  /nix/store/wvfz253s619yl2d1j71rwa1hv6p9vf20-nix-2.36.0pre20260913_af63c97.drv
  /nix/store/qx2z95pjqrwkkynbg9ib7lq337vpl1i9-nix-functional-tests-2.36.0pre20260913_af63c97.drv
error: Cannot build '/nix/store/qx2z95pjqrwkkynbg9ib7lq337vpl1i9-nix-functional-tests-2.36.0pre20260913_af63c97.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/pyqvqqdyz0praa8r67aq8dkjcy3j53w3-nix-functional-tests-2.36.0pre20260913_af63c97
       Last 25 log lines:
       > 209/223 local-overlay-store - nix-functional-tests:add-lower                OK              1.29s
       > 210/223 main - nix-functional-tests:timeout                                 OK              6.71s
       > 211/223 flakes - nix-functional-tests:non-flake-inputs                      OK              2.43s
       > 212/223 local-overlay-store - nix-functional-tests:build                    OK              2.14s
       > 213/223 local-overlay-store - nix-functional-tests:delete-duplicate         OK              2.02s
       > 214/223 local-overlay-store - nix-functional-tests:check-post-init          OK              2.42s
       > 215/223 local-overlay-store - nix-functional-tests:optimise                 OK              2.30s
       > 216/223 local-overlay-store - nix-functional-tests:verify                   OK              2.56s
       > 217/223 local-overlay-store - nix-functional-tests:delete-refs              OK              3.46s
       > 218/223 local-overlay-store - nix-functional-tests:gc                       OK              3.37s
       > 219/223 git-hashing - nix-functional-tests:fixed                            OK              4.74s
       > 220/223 local-overlay-store - nix-functional-tests:stale-file-handle        OK              5.05s
       > 221/223 flakes - nix-functional-tests:flakes                                OK              7.46s
       > 222/223 flakes - nix-functional-tests:mercurial                             OK             10.47s
       > 223/223 main - nix-functional-tests:lang                                    OK             21.74s
       >
       > Summary of Failures:
       >
       >  51/223 main - nix-functional-tests:impure-derivations                      FAIL            0.61s   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/qx2z95pjqrwkkynbg9ib7lq337vpl1i9-nix-functional-tests-2.36.0pre20260913_af63c97.drv