these 4 derivations will be built:
  /nix/store/mrmliwagq5xqwcwjrj2qw0i5lmnhznn7-Cargo.toml.drv
  /nix/store/bvbm85m1pij6hyaqkgyx75cvm9gal6y6-source.drv
  /nix/store/g0a30pmjzdbgb4pgr1b4g53ixdf2ir04-harmonia-deps-3.2.0.drv
  /nix/store/i7djh6mpbwj8ll4avpnhr3nv8y1iw0hl-harmonia-llvm-cov-3.2.0.drv
error: Cannot build '/nix/store/i7djh6mpbwj8ll4avpnhr3nv8y1iw0hl-harmonia-llvm-cov-3.2.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/xsvpjbld5q68zwjd9bz1pmj3vw8a6k0l-harmonia-llvm-cov-3.2.0
       Last 25 log lines:
       >         FAIL [   2.133s] (2258/2375) harmonia-store-gc::integration gc_keeps_temp_root_not_yet_in_db
       >         FAIL [   2.183s] (2262/2375) harmonia-store-gc::integration gc_deletes_drv_when_output_deriver_is_unset
       >         FAIL [   2.169s] (2263/2375) harmonia-store-gc::integration gc_keeps_unknown_path_registered_after_snapshot
       >         FAIL [   2.247s] (2264/2375) harmonia-store-gc::integration gc_handles_self_references
       >         FAIL [   2.250s] (2265/2375) harmonia-store-gc::integration gc_socket_root_mid_gc_keeps_path_and_deletes_rest
       >         FAIL [   2.344s] (2266/2375) harmonia-store-gc::integration gc_keeps_lock_file_of_active_build
       >         FAIL [   2.340s] (2267/2375) harmonia-store-gc::socket_concurrency concurrent_clients_never_resurrect_deleted_paths
       >         FAIL [   2.353s] (2268/2375) harmonia-store-gc::integration gc_max_freed_stops_early
       >         FAIL [   2.364s] (2269/2375) harmonia-store-gc::integration gc_keeps_transitive_closure
       >         FAIL [   2.442s] (2270/2375) harmonia-store-gc::integration gc_deletes_readonly_paths
       >         FAIL [   2.644s] (2272/2375) harmonia-store-gc::integration gc_keeps_runtime_roots_from_environ
       >         FAIL [   2.712s] (2273/2375) harmonia-store-gc::integration gc_keeps_deriver_of_alive_path
       >         FAIL [   2.835s] (2275/2375) harmonia-store-gc::integration gc_skips_locked_tmp_dir
       >         FAIL [   2.847s] (2276/2375) harmonia-store-gc::integration gc_max_freed_batches_by_estimated_size
       >         FAIL [   2.964s] (2277/2375) harmonia-store-gc::integration gc_deletes_unreferenced_paths
       >         FAIL [   3.225s] (2278/2375) harmonia-store-gc::integration gc_keeps_runtime_roots_from_open_fd
       >         FAIL [   3.304s] (2279/2375) harmonia-store-gc::integration gc_chunk_size_one_deletes_whole_dead_chain
       >         FAIL [   3.662s] (2280/2375) harmonia-store-gc::integration gc_deletes_non_utf8_store_entry
       >         FAIL [   3.746s] (2281/2375) harmonia-store-gc::integration gc_keeps_ca_output_via_build_trace
       >         FAIL [   3.810s] (2282/2375) harmonia-store-gc::integration gc_cleans_unused_links_only_when_not_dry_run
       >         FAIL [   3.865s] (2283/2375) harmonia-store-gc::integration gc_rebases_canonical_runtime_roots_to_logical_store
       >         FAIL [   3.884s] (2284/2375) harmonia-store-gc::integration gc_ignores_invalid_store_basenames
       >         FAIL [   4.104s] (2287/2375) harmonia-store-gc::integration gc_removes_dangling_auto_root
       > warning: 79/2375 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/i7djh6mpbwj8ll4avpnhr3nv8y1iw0hl-harmonia-llvm-cov-3.2.0.drv