these 4 derivations will be built:
  /nix/store/rjqfdiiwhvcsaw4cdls1qrn0djwpvlls-Cargo.toml.drv
  /nix/store/0yxxsgh02f3sf0w85afwzhy6mlrj4882-source.drv
  /nix/store/l4ygzi7fb7mcawlmbbk9dy5w67r3dcna-harmonia-deps-3.2.0.drv
  /nix/store/p0cpq1m49dhijl4mvdw9i3l0hp3qy6ag-harmonia-llvm-cov-3.2.0.drv
error: Cannot build '/nix/store/p0cpq1m49dhijl4mvdw9i3l0hp3qy6ag-harmonia-llvm-cov-3.2.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/c5ha34a22lwb17qi7inn971nn0b1bzsj-harmonia-llvm-cov-3.2.0
       Last 25 log lines:
       >         FAIL [   1.928s] (2240/2376) harmonia-store-gc::integration gc_deletes_non_utf8_store_entry
       >         FAIL [   1.853s] (2242/2376) harmonia-store-gc::integration gc_scans_roots_despite_unfollowable_indirect_target
       >         FAIL [   1.880s] (2243/2376) harmonia-store-gc::integration gc_keeps_runtime_roots_from_open_fd
       >         FAIL [   1.901s] (2244/2376) harmonia-store-gc::integration gc_keeps_runtime_roots_from_environ
       >         FAIL [   1.918s] (2245/2376) harmonia-store-gc::integration gc_runtime_roots_validated_against_db
       >         FAIL [   1.922s] (2246/2376) harmonia-store-gc::integration gc_removes_dangling_auto_root
       >         FAIL [   2.168s] (2248/2376) harmonia-store-gc::integration gc_deletes_unreferenced_paths
       >         FAIL [   2.266s] (2250/2376) harmonia-store-gc::integration gc_keeps_ca_output_via_build_trace
       >         FAIL [   2.286s] (2251/2376) harmonia-store-gc::integration gc_empty_store_is_noop
       >         FAIL [   2.223s] (2252/2376) harmonia-store-gc::integration gc_skips_locked_tmp_dir
       >         FAIL [   2.264s] (2253/2376) harmonia-store-gc::integration gc_store_dir_trailing_slash_is_normalized
       >         FAIL [   2.351s] (2255/2376) harmonia-store-gc::integration gc_keeps_temp_root_not_yet_in_db
       >         FAIL [   2.358s] (2257/2376) harmonia-store-gc::integration gc_removes_unlocked_tmp_dir
       >         FAIL [   2.390s] (2259/2376) harmonia-store-gc::integration gc_socket_root_mid_gc_keeps_path_and_deletes_rest
       >         FAIL [   2.603s] (2260/2376) harmonia-store-gc::integration gc_handles_self_references
       >         FAIL [   2.588s] (2261/2376) harmonia-store-gc::integration gc_socket_serves_before_graph_load_and_keeps_early_roots
       >         FAIL [   2.686s] (2262/2376) harmonia-store-gc::integration gc_keeps_lock_file_of_active_build
       >         FAIL [   2.755s] (2263/2376) harmonia-store-gc::integration gc_rebases_canonical_runtime_roots_to_logical_store
       >         FAIL [   2.968s] (2265/2376) harmonia-store-gc::integration gc_ignores_invalid_store_basenames
       >         FAIL [   3.290s] (2267/2376) harmonia-store-gc::integration gc_removes_reserved_space_file_and_creates_private_lock
       >         FAIL [   4.049s] (2268/2376) harmonia-store-gc::integration gc_cleans_unused_links_only_when_not_dry_run
       >         FAIL [   4.152s] (2271/2376) harmonia-store-gc::integration gc_keeps_transitive_closure
       >         FAIL [   4.386s] (2274/2376) harmonia-store-gc::integration gc_does_not_hang_on_tmp_fifo
       > warning: 92/2376 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/p0cpq1m49dhijl4mvdw9i3l0hp3qy6ag-harmonia-llvm-cov-3.2.0.drv