this derivation will be built:
  /nix/store/7jig3jkxks17gz6kywr01vy1kwdz2i9k-harmonia-llvm-cov-3.3.0.drv
error: Cannot build '/nix/store/7jig3jkxks17gz6kywr01vy1kwdz2i9k-harmonia-llvm-cov-3.3.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/7f7d1insb87bybv0m790qc374kdq9vxp-harmonia-llvm-cov-3.3.0
       Last 25 log lines:
       >         PASS [   9.531s] (2496/2515) harmonia-store-gc::integration gc_deletes_readonly_paths
       >         PASS [   9.552s] (2497/2515) harmonia-store-gc::integration gc_removes_unknown_disk_entries
       >         PASS [   9.557s] (2498/2515) harmonia-store-gc::integration gc_keeps_transitive_closure
       >         PASS [   9.573s] (2499/2515) harmonia-store-gc::integration gc_ignores_invalid_store_basenames
       >         PASS [   9.604s] (2500/2515) harmonia-store-gc::integration gc_keeps_temp_root_not_yet_in_db
       >         PASS [   9.658s] (2501/2515) harmonia-store-gc::integration gc_keep_recent_pins_recently_registered
       >         PASS [   9.678s] (2502/2515) harmonia-store-gc::integration gc_deletes_non_utf8_store_entry
       >         PASS [   9.771s] (2503/2515) harmonia-store-gc::integration gc_store_dir_trailing_slash_is_normalized
       >         PASS [   9.785s] (2504/2515) harmonia-store-gc::integration gc_max_freed_referrer_never_outlives_reference
       >         PASS [   9.811s] (2505/2515) harmonia-store-gc::integration gc_skips_locked_tmp_dir
       >         PASS [   9.877s] (2506/2515) harmonia-store-gc::integration gc_rebases_canonical_runtime_roots_to_logical_store
       >         PASS [   9.885s] (2507/2515) harmonia-store-gc::integration gc_drops_partial_temp_root
       >         PASS [   9.918s] (2508/2515) harmonia-store-gc::integration gc_keeps_unknown_path_registered_after_snapshot
       >         PASS [   9.964s] (2509/2515) harmonia-store-gc::integration gc_removes_dangling_auto_root
       >         PASS [  10.213s] (2510/2515) harmonia-store-gc::integration gc_cleans_unused_links_only_when_not_dry_run
       >         PASS [  11.212s] (2511/2515) harmonia-protocol ser::mock::proptests::proptest_mock
       >         PASS [  12.110s] (2512/2515) harmonia-file-nar archive::restorer::proptests::proptest_restore_dump
       >         PASS [  16.115s] (2513/2515) harmonia-store-gc::integration gc_vacuums_db_after_mass_deletion
       >         PASS [  25.074s] (2514/2515) harmonia-cache::retry test_download_retry_over_flaky_connection
       >         PASS [  51.736s] (2515/2515) harmonia-protocol wire_roundtrip::roundtrip_query_missing_result
       > ────────────
       >      Summary [  52.308s] 2515 tests run: 2513 passed (14 leaky), 2 failed, 0 skipped
       >         FAIL [   0.025s] (2406/2515) harmonia-store-derivation::json_upstream derived_path::test_derived_path_built::to_json
       >         FAIL [   0.034s] (2409/2515) harmonia-store-derivation::json_upstream derived_path::test_derived_path_built::from_json
       > error: test run failed
       For full logs, run:
         nix log /nix/store/7jig3jkxks17gz6kywr01vy1kwdz2i9k-harmonia-llvm-cov-3.3.0.drv