this derivation will be built:
  /nix/store/lcp9vzqbqi44l8si7a7nfqgl2v8jkfvc-harmonia-llvm-cov-3.2.0.drv
error: Cannot build '/nix/store/lcp9vzqbqi44l8si7a7nfqgl2v8jkfvc-harmonia-llvm-cov-3.2.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/9zk8kj68az1nr2k2d5d9nda2fgsikxbv-harmonia-llvm-cov-3.2.0
       Last 25 log lines:
       >         FAIL [   1.851s] (2335/2376) harmonia-store-gc::integration gc_keeps_ca_deriver_via_deriver_field_not_build_trace
       >         FAIL [   1.856s] (2336/2376) harmonia-store-gc::integration gc_removes_dangling_auto_root
       >         FAIL [   1.885s] (2337/2376) harmonia-store-gc::integration gc_deletes_non_utf8_store_entry
       >         FAIL [   1.900s] (2338/2376) harmonia-store-gc::integration gc_keeps_indirect_auto_root
       >         FAIL [   1.924s] (2339/2376) harmonia-store-gc::integration gc_runtime_roots_validated_against_db
       >         FAIL [   1.951s] (2340/2376) harmonia-store-gc::integration gc_does_not_hang_on_tmp_fifo
       >         FAIL [   1.958s] (2342/2376) harmonia-store-gc::integration gc_skips_locked_tmp_dir
       >         FAIL [   1.962s] (2343/2376) harmonia-store-gc::integration gc_keeps_transitive_closure
       >         FAIL [   1.963s] (2344/2376) harmonia-store-gc::integration gc_keeps_lock_file_of_active_build
       >         FAIL [   1.990s] (2345/2376) harmonia-store-gc::integration gc_ignores_invalid_store_basenames
       >         FAIL [   2.002s] (2346/2376) harmonia-store-gc::integration gc_deletes_readonly_paths
       >         FAIL [   2.020s] (2347/2376) harmonia-store-gc::integration gc_keeps_ca_output_via_build_trace
       >         FAIL [   2.178s] (2349/2376) harmonia-store-gc::integration gc_removes_reserved_space_file_and_creates_private_lock
       >         FAIL [   2.296s] (2350/2376) harmonia-store-gc::integration gc_keeps_unknown_path_registered_after_snapshot
       >         FAIL [   2.409s] (2353/2376) harmonia-store-gc::integration gc_removes_unlocked_tmp_dir
       >         FAIL [   2.461s] (2354/2376) harmonia-store-gc::integration gc_deletes_drv_when_output_deriver_is_unset
       >         FAIL [   2.729s] (2356/2376) harmonia-store-gc::integration gc_removes_unknown_disk_entries
       >         FAIL [   2.748s] (2357/2376) harmonia-store-gc::integration gc_scans_roots_despite_unfollowable_indirect_target
       >         FAIL [   2.761s] (2358/2376) harmonia-store-gc::integration gc_drops_partial_temp_root
       >         FAIL [   2.894s] (2359/2376) harmonia-store-gc::integration gc_max_freed_referrer_never_outlives_reference
       >         FAIL [   2.976s] (2360/2376) harmonia-store-gc::integration gc_chunk_size_one_deletes_whole_dead_chain
       >         FAIL [   3.538s] (2361/2376) harmonia-store-gc::integration gc_empty_store_is_noop
       >         FAIL [   3.554s] (2362/2376) harmonia-store-gc::integration gc_keep_recent_pins_recently_registered
       >         FAIL [   4.523s] (2367/2376) harmonia-store-gc::integration gc_keeps_temp_root_not_yet_in_db
       > error: test run failed
       For full logs, run:
         nix log /nix/store/lcp9vzqbqi44l8si7a7nfqgl2v8jkfvc-harmonia-llvm-cov-3.2.0.drv