this derivation will be built:
  /nix/store/bksa1f4awi8z42l5s74lg2d955gcm2y3-harmonia-llvm-cov-3.3.0.drv
error: Cannot build '/nix/store/bksa1f4awi8z42l5s74lg2d955gcm2y3-harmonia-llvm-cov-3.3.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/06f1b5pfkn302h0bg0axxkhqhacnkram-harmonia-llvm-cov-3.3.0
       Last 25 log lines:
       >         PASS [   1.402s] (2221/2517) harmonia-store-gc::integration gc_socket_root_mid_gc_keeps_path_and_deletes_rest
       >         PASS [   1.413s] (2222/2517) harmonia-store-gc::integration gc_drops_partial_temp_root
       >         PASS [   1.427s] (2223/2517) harmonia-store-gc::integration gc_chunk_size_one_deletes_whole_dead_chain
       >         PASS [   1.431s] (2224/2517) harmonia-store-gc::integration gc_max_freed_batches_by_estimated_size
       >         PASS [   1.431s] (2225/2517) harmonia-store-gc::integration gc_removes_unknown_disk_entries
       >         PASS [   1.432s] (2226/2517) harmonia-store-gc::integration gc_scans_roots_despite_unfollowable_indirect_target
       >         PASS [   1.441s] (2227/2517) harmonia-store-gc::integration gc_deletes_unreferenced_paths
       >         PASS [   1.502s] (2228/2517) harmonia-store-gc::integration gc_handles_self_references
       >         PASS [   1.504s] (2229/2517) harmonia-store-gc::integration gc_keeps_ca_deriver_via_deriver_field_not_build_trace
       >         PASS [   1.504s] (2230/2517) harmonia-store-gc::integration gc_ignores_invalid_store_basenames
       >         PASS [   1.504s] (2231/2517) harmonia-store-gc::integration gc_keeps_ca_output_via_build_trace
       >         PASS [   1.503s] (2232/2517) harmonia-store-gc::integration gc_rebases_canonical_runtime_roots_to_logical_store
       >         PASS [   1.522s] (2233/2517) harmonia-store-gc::integration gc_cleans_unused_links_only_when_not_dry_run
       >         PASS [   1.866s] (2234/2517) harmonia-file-nar archive::parser::unittests::proptest_parse_stream
       >         PASS [   1.797s] (2235/2517) harmonia-store-aterm input_address::tests::hash_derivation_varies
       >         PASS [   2.950s] (2236/2517) harmonia-protocol ser::mock::proptests::proptest_mock
       >         PASS [   3.305s] (2237/2517) harmonia-file-nar archive::restorer::proptests::proptest_restore_dump
       >         PASS [  11.982s] (2238/2517) harmonia-protocol wire_roundtrip::roundtrip_query_missing_result
       >         PASS [  13.838s] (2239/2517) harmonia-store-gc::integration gc_vacuums_db_after_mass_deletion
       >         PASS [  25.084s] (2240/2517) harmonia-cache::retry test_download_retry_over_flaky_connection
       > ────────────
       >      Summary [  25.085s] 2240/2517 tests run: 2239 passed, 1 failed, 0 skipped
       >         FAIL [   0.010s] (1857/2517) harmonia-store-aterm::upstream_drv drv_parse_error::case_1_bad_version
       > warning: 277/2517 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/bksa1f4awi8z42l5s74lg2d955gcm2y3-harmonia-llvm-cov-3.3.0.drv