this derivation will be built:
  /nix/store/154zcbv8mnpyr7z8f1wqbdmy8p6clyqm-harmonia-llvm-cov-3.3.0.drv
error: Cannot build '/nix/store/154zcbv8mnpyr7z8f1wqbdmy8p6clyqm-harmonia-llvm-cov-3.3.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/j1qn8dms76vhlcdw0s33rdar4c8hlasa-harmonia-llvm-cov-3.3.0
       Last 25 log lines:
       >         PASS [   2.050s] (2110/2515) harmonia-store-aterm input_address::tests::hash_derivation_varies
       >         PASS [   1.698s] (2111/2515) harmonia-store-gc::integration gc_removes_reserved_space_file_and_creates_private_lock
       >         PASS [   1.768s] (2112/2515) harmonia-store-gc::integration gc_empty_store_is_noop
       >         PASS [   1.736s] (2113/2515) harmonia-store-gc::integration gc_runtime_roots_validated_against_db
       >         PASS [   1.858s] (2114/2515) harmonia-store-gc::integration gc_deletes_unreferenced_paths
       >         PASS [   1.829s] (2115/2515) harmonia-store-gc::integration gc_removes_stale_temp_roots_file
       >         PASS [   1.837s] (2116/2515) harmonia-store-gc::integration gc_scans_roots_despite_unfollowable_indirect_target
       >         PASS [   1.897s] (2117/2515) harmonia-store-gc::integration gc_handles_self_references
       >         PASS [   1.872s] (2118/2515) harmonia-store-gc::integration gc_keeps_transitive_closure
       >         PASS [   1.892s] (2119/2515) harmonia-store-gc::integration gc_keeps_deriver_of_alive_path
       >         PASS [   1.870s] (2120/2515) harmonia-store-gc::integration gc_rebases_canonical_runtime_roots_to_logical_store
       >         PASS [   1.865s] (2121/2515) harmonia-store-gc::integration gc_removes_unlocked_tmp_dir
       >         PASS [   3.175s] (2122/2515) harmonia-protocol ser::mock::proptests::proptest_mock
       >         PASS [   2.080s] (2123/2515) harmonia-store-gc::integration gc_deletes_drv_when_output_deriver_is_unset
       >         PASS [   2.094s] (2124/2515) harmonia-store-gc::integration gc_drops_partial_temp_root
       >         PASS [   2.110s] (2125/2515) harmonia-store-gc::integration gc_cleans_unused_links_only_when_not_dry_run
       >         PASS [   4.159s] (2126/2515) harmonia-file-nar archive::restorer::proptests::proptest_restore_dump
       >         PASS [  11.783s] (2127/2515) harmonia-protocol wire_roundtrip::roundtrip_query_missing_result
       >         PASS [  25.865s] (2128/2515) harmonia-cache::retry test_download_retry_over_flaky_connection
       > ────────────
       >      Summary [  25.866s] 2128/2515 tests run: 2126 passed, 2 failed, 0 skipped
       >         FAIL [   0.160s] (2001/2515) harmonia-store-derivation::json_upstream derived_path::test_derived_path_built::from_json
       >         FAIL [   0.161s] (2002/2515) harmonia-store-derivation::json_upstream derived_path::test_derived_path_built::to_json
       > warning: 387/2515 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/154zcbv8mnpyr7z8f1wqbdmy8p6clyqm-harmonia-llvm-cov-3.3.0.drv