this derivation will be built:
  /nix/store/0kg0ri4blv218k8yy5vha4kzmjr4462c-harmonia-llvm-cov-3.2.0.drv
error: Cannot build '/nix/store/0kg0ri4blv218k8yy5vha4kzmjr4462c-harmonia-llvm-cov-3.2.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/w9s9sjpmvbg9fvs97aw7z2p9mpkjciq2-harmonia-llvm-cov-3.2.0
       Last 25 log lines:
       >         FAIL [   1.790s] (2332/2376) harmonia-store-gc::integration gc_deletes_drv_when_output_deriver_is_unset
       >         FAIL [   1.854s] (2333/2376) harmonia-store-gc::integration gc_deletes_non_utf8_store_entry
       >         FAIL [   1.866s] (2334/2376) harmonia-store-gc::integration gc_removes_dangling_auto_root
       >         FAIL [   1.907s] (2335/2376) harmonia-store-gc::integration gc_keeps_transitive_closure
       >         FAIL [   1.958s] (2336/2376) harmonia-store-gc::integration gc_keeps_deriver_of_alive_path
       >         FAIL [   2.067s] (2337/2376) harmonia-store-gc::integration gc_rebases_canonical_runtime_roots_to_logical_store
       >         FAIL [   2.103s] (2339/2376) harmonia-store-gc::integration gc_keeps_lock_file_of_active_build
       >         FAIL [   2.167s] (2341/2376) harmonia-store-gc::integration gc_keeps_ca_outputs_of_alive_drv
       >         FAIL [   2.208s] (2342/2376) harmonia-store-gc::integration gc_does_not_hang_on_tmp_fifo
       >         FAIL [   2.199s] (2343/2376) harmonia-store-gc::integration gc_keeps_ca_deriver_via_deriver_field_not_build_trace
       >         FAIL [   2.206s] (2344/2376) harmonia-store-gc::integration gc_keeps_runtime_roots_from_environ
       >         FAIL [   2.238s] (2346/2376) harmonia-store-gc::integration gc_keeps_temp_root_not_yet_in_db
       >         FAIL [   2.253s] (2347/2376) harmonia-store-gc::integration gc_keeps_runtime_roots_from_open_fd
       >         FAIL [   2.303s] (2349/2376) harmonia-store-gc::integration gc_deletes_unreferenced_paths
       >         FAIL [   2.385s] (2350/2376) harmonia-store-gc::integration gc_keeps_unknown_path_registered_after_snapshot
       >         FAIL [   2.520s] (2352/2376) harmonia-store-gc::integration gc_store_dir_trailing_slash_is_normalized
       >         FAIL [   2.663s] (2354/2376) harmonia-store-gc::integration gc_skips_locked_tmp_dir
       >         FAIL [   2.775s] (2355/2376) harmonia-store-gc::integration gc_handles_self_references
       >         FAIL [   2.921s] (2356/2376) harmonia-store-gc gc_socket::stress_tests::concurrent_clients_never_resurrect_deleted_paths
       >         FAIL [   3.123s] (2357/2376) harmonia-store-gc::integration gc_socket_serves_before_graph_load_and_keeps_early_roots
       >         FAIL [   3.128s] (2358/2376) harmonia-store-gc::integration gc_socket_root_mid_gc_keeps_path_and_deletes_rest
       >         FAIL [   3.177s] (2359/2376) harmonia-store-gc::integration gc_max_freed_stops_early
       >         FAIL [   3.385s] (2362/2376) harmonia-store-gc::integration gc_max_freed_batches_by_estimated_size
       >         FAIL [   3.382s] (2363/2376) harmonia-store-gc::integration gc_scans_roots_despite_unfollowable_indirect_target
       > error: test run failed
       For full logs, run:
         nix log /nix/store/0kg0ri4blv218k8yy5vha4kzmjr4462c-harmonia-llvm-cov-3.2.0.drv