this derivation will be built:
  /nix/store/gbvbx6wl4p0f7vgccz17rl02i6iqqndk-harmonia-llvm-cov-3.2.0.drv
error: Cannot build '/nix/store/gbvbx6wl4p0f7vgccz17rl02i6iqqndk-harmonia-llvm-cov-3.2.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/ip2iv9ncy493psh8g3rvm7ql4byi2fpz-harmonia-llvm-cov-3.2.0
       Last 25 log lines:
       >         FAIL [   2.416s] (2338/2376) harmonia-store-gc::integration gc_runtime_roots_validated_against_db
       >         FAIL [   2.601s] (2340/2376) harmonia-store-gc::integration gc_keeps_runtime_roots_from_environ
       >         FAIL [   2.485s] (2341/2376) harmonia-store-gc::integration gc_scans_roots_despite_unfollowable_indirect_target
       >         FAIL [   2.681s] (2342/2376) harmonia-store-gc::integration gc_keeps_temp_root_not_yet_in_db
       >         FAIL [   2.767s] (2343/2376) harmonia-store-gc::integration gc_keeps_indirect_auto_root
       >         FAIL [   2.768s] (2344/2376) harmonia-store-gc::integration gc_keeps_lock_file_of_active_build
       >         FAIL [   2.667s] (2345/2376) harmonia-store-gc::integration gc_removes_stale_temp_roots_file
       >         FAIL [   2.838s] (2346/2376) harmonia-store-gc::integration gc_keeps_unknown_path_registered_after_snapshot
       >         FAIL [   2.772s] (2348/2376) harmonia-store-gc::integration gc_store_dir_trailing_slash_is_normalized
       >         FAIL [   2.854s] (2349/2376) harmonia-store-gc::integration gc_socket_root_mid_gc_keeps_path_and_deletes_rest
       >         FAIL [   3.050s] (2350/2376) harmonia-store-gc::integration gc_deletes_unreferenced_paths
       >         FAIL [   3.074s] (2351/2376) harmonia-store-gc::integration gc_deletes_drv_when_output_deriver_is_unset
       >         FAIL [   2.891s] (2352/2376) harmonia-store-gc::integration gc_socket_serves_before_graph_load_and_keeps_early_roots
       >         FAIL [   3.129s] (2354/2376) harmonia-store-gc::integration gc_keep_recent_pins_recently_registered
       >         FAIL [   3.162s] (2355/2376) harmonia-store-gc::integration gc_handles_self_references
       >         FAIL [   3.173s] (2356/2376) harmonia-store-gc::integration gc_keeps_transitive_closure
       >         FAIL [   3.248s] (2357/2376) harmonia-store-gc::integration gc_keeps_ca_deriver_via_deriver_field_not_build_trace
       >         FAIL [   3.284s] (2358/2376) harmonia-store-gc::integration gc_does_not_hang_on_tmp_fifo
       >         FAIL [   3.252s] (2359/2376) harmonia-store-gc::integration gc_keeps_ca_outputs_of_alive_drv
       >         FAIL [   3.247s] (2360/2376) harmonia-store-gc::integration gc_keeps_runtime_roots_from_open_fd
       >         FAIL [   3.270s] (2361/2376) harmonia-store-gc::integration gc_rebases_canonical_runtime_roots_to_logical_store
       >         FAIL [   3.915s] (2363/2376) harmonia-store-gc::integration gc_chunk_size_one_deletes_whole_dead_chain
       >         FAIL [   3.957s] (2364/2376) harmonia-store-gc::integration gc_max_freed_batches_by_estimated_size
       >         FAIL [   4.279s] (2365/2376) harmonia-store-gc::integration gc_cleans_unused_links_only_when_not_dry_run
       > error: test run failed
       For full logs, run:
         nix log /nix/store/gbvbx6wl4p0f7vgccz17rl02i6iqqndk-harmonia-llvm-cov-3.2.0.drv