this derivation will be built:
  /nix/store/9igw05fixwx48krdzwasv469kb9rg3fl-harmonia-llvm-cov-3.2.0.drv
error: Cannot build '/nix/store/9igw05fixwx48krdzwasv469kb9rg3fl-harmonia-llvm-cov-3.2.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/rkr4fgp4wg9qziyqbf2qmi06z321kl4a-harmonia-llvm-cov-3.2.0
       Last 25 log lines:
       >         FAIL [   1.777s] (2334/2375) harmonia-store-gc::integration gc_socket_serves_before_graph_load_and_keeps_early_roots
       >         FAIL [   1.776s] (2335/2375) harmonia-store-gc::integration gc_store_dir_trailing_slash_is_normalized
       >         FAIL [   1.788s] (2336/2375) harmonia-store-gc::integration gc_keeps_deriver_of_alive_path
       >         FAIL [   1.789s] (2337/2375) harmonia-store-gc::integration gc_drops_partial_temp_root
       >         FAIL [   1.824s] (2338/2375) harmonia-store-gc::integration gc_keeps_lock_file_of_active_build
       >         FAIL [   1.827s] (2339/2375) harmonia-store-gc::integration gc_skips_locked_tmp_dir
       >         FAIL [   1.855s] (2340/2375) harmonia-store-gc::integration gc_handles_self_references
       >         FAIL [   1.858s] (2341/2375) harmonia-store-gc::integration gc_runtime_roots_validated_against_db
       >         FAIL [   1.858s] (2342/2375) harmonia-store-gc::integration gc_keeps_transitive_closure
       >         FAIL [   1.869s] (2343/2375) harmonia-store-gc::integration gc_does_not_hang_on_tmp_fifo
       >         FAIL [   1.890s] (2345/2375) harmonia-store-gc::integration gc_ignores_invalid_store_basenames
       >         FAIL [   1.898s] (2346/2375) harmonia-store-gc::integration gc_deletes_drv_when_output_deriver_is_unset
       >         FAIL [   1.925s] (2347/2375) harmonia-store-gc::integration gc_scans_roots_despite_unfollowable_indirect_target
       >         FAIL [   1.945s] (2348/2375) harmonia-store-gc::integration gc_keeps_ca_outputs_of_alive_drv
       >         FAIL [   1.963s] (2349/2375) harmonia-store-gc::integration gc_removes_stale_temp_roots_file
       >         FAIL [   1.965s] (2350/2375) harmonia-store-gc::integration gc_keeps_ca_deriver_via_deriver_field_not_build_trace
       >         FAIL [   2.000s] (2352/2375) harmonia-store-gc::integration gc_keeps_unknown_path_registered_after_snapshot
       >         FAIL [   2.081s] (2353/2375) harmonia-store-gc::integration gc_rebases_canonical_runtime_roots_to_logical_store
       >         FAIL [   2.164s] (2355/2375) harmonia-store-gc::integration gc_deletes_non_utf8_store_entry
       >         FAIL [   2.370s] (2356/2375) harmonia-store-gc::integration gc_keeps_runtime_roots_from_environ
       >         FAIL [   2.501s] (2357/2375) harmonia-store-gc::integration gc_removes_unlocked_tmp_dir
       >         FAIL [   2.548s] (2358/2375) harmonia-store-gc::integration gc_max_freed_stops_early
       >         FAIL [   3.257s] (2361/2375) harmonia-store-gc::integration gc_chunk_size_one_deletes_whole_dead_chain
       >         FAIL [   4.137s] (2363/2375) harmonia-store-gc::integration gc_deletes_readonly_paths
       > error: test run failed
       For full logs, run:
         nix log /nix/store/9igw05fixwx48krdzwasv469kb9rg3fl-harmonia-llvm-cov-3.2.0.drv