this derivation will be built:
  /nix/store/27g57kzxmr0ycxjy019gxdzp1mlzq0fh-iets-nextest-0.1.0.drv
error: build of '/nix/store/27g57kzxmr0ycxjy019gxdzp1mlzq0fh-iets-nextest-0.1.0.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=22&system=aarch64-linux' failed: Cannot build '/nix/store/27g57kzxmr0ycxjy019gxdzp1mlzq0fh-iets-nextest-0.1.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/vzbqgz4r6zfnlyqcfjh42wksi6llqp2s-iets-nextest-0.1.0
       Last 25 log lines:
       >
       >     thread 'concurrent_readers_and_writers_never_see_a_torn_entry' (2139) panicked at tests/cache_hygiene.rs:121:5:
       >     a scoped thread panicked
       >
       >   Cancelling due to test failure: 15 tests still running
       >         PASS [   0.468s] (504/520) iets::cache_hygiene a_killed_writer_leaves_the_store_usable
       >         PASS [   0.456s] (505/520) iets::fetchurl a_hashed_fetch_has_the_store_path_nix_gives
       >         PASS [   0.198s] (506/520) iets::profile an_unprofiled_run_says_nothing_about_a_profile
       >         PASS [   0.212s] (507/520) iets::profile a_run_shorter_than_a_tick_says_it_sampled_nothing
       >         PASS [   0.548s] (508/520) iets::cli dash_f_names_the_file_in_the_native_namespace
       >         PASS [   0.201s] (509/520) iets::pure a_directory_with_no_marker_is_its_own_project
       >         PASS [   0.423s] (510/520) iets::fetchurl without_a_hash_no_evaluation_fetches_and_prefetch_gives_the_hash
       >         PASS [   1.856s] (511/520) iets fetch::http::tests::a_decompression_bomb_is_refused
       >         PASS [   0.440s] (512/520) iets::pure a_read_in_the_project_is_pure_and_one_above_it_is_not
       >         PASS [   4.447s] (513/520) iets api::run::tests::helper_fibers_read_the_ir_cache
       >         PASS [   4.856s] (514/520) iets runtime::value::tests::union_iteration_merges_like_a_fold
       >         PASS [   3.971s] (515/520) iets::profile a_builtin_names_itself_in_a_frame
       >         PASS [   7.597s] (516/520) iets::profile a_folded_line_is_a_stack_and_a_count
       >         PASS [  15.622s] (517/520) iets::profile an_allocation_profile_accounts_for_the_arena
       >         PASS [  23.731s] (518/520) iets syntax::tests::deep_nesting_ends_with_an_error
       > ------------
       >      Summary [  24.724s] 518/520 tests run: 517 passed, 1 failed, 5 skipped
       >         FAIL [   0.446s] (503/520) iets::cache_hygiene concurrent_readers_and_writers_never_see_a_torn_entry
       > warning: 2/520 tests were not run due to test failure (run with --no-fail-fast to run all tests, or run with --max-fail)
       > error: test run failed
       For full logs, run:
         nix log /nix/store/27g57kzxmr0ycxjy019gxdzp1mlzq0fh-iets-nextest-0.1.0.drv
error: Cannot build '/nix/store/27g57kzxmr0ycxjy019gxdzp1mlzq0fh-iets-nextest-0.1.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/vzbqgz4r6zfnlyqcfjh42wksi6llqp2s-iets-nextest-0.1.0