these 3 derivations will be built:
  /nix/store/4nxfh5swivj1cb2i5411wl7wpnmsb1ri-anyhow-1.0.104.drv
  /nix/store/fsqsw5vgswmgb9ija8fb2s2frwdny369-cargo-vendor-dir.drv
  /nix/store/dw3v1j29b30piq9gax8d76y8056swb2f-fast-nix-gc-0.1.0.drv
error: Cannot build '/nix/store/dw3v1j29b30piq9gax8d76y8056swb2f-fast-nix-gc-0.1.0.drv'.
       Reason: builder failed with exit code 101.
       Output paths:
         /nix/store/b567s9ph8z05il0wp2p8kf6ijsk6d4lv-fast-nix-gc-0.1.0
       Last 25 log lines:
       >     gc_deletes_drv_when_output_deriver_is_unset
       >     gc_deletes_readonly_paths
       >     gc_deletes_unreferenced_paths
       >     gc_drops_partial_temp_root
       >     gc_empty_store_is_noop
       >     gc_handles_self_references
       >     gc_ignores_invalid_store_basenames
       >     gc_keeps_ca_output_via_build_trace
       >     gc_keeps_ca_outputs_of_alive_drv
       >     gc_keeps_lock_file_of_active_build
       >     gc_keeps_runtime_roots_from_environ
       >     gc_rebases_canonical_runtime_roots_to_logical_store
       >     gc_removes_reserved_space_file_and_creates_private_lock
       >     gc_removes_stale_temp_roots_file
       >     gc_removes_unknown_disk_entries
       >     gc_removes_unlocked_tmp_dir
       >     gc_runtime_roots_validated_against_db
       >     gc_scans_roots_despite_unfollowable_indirect_target
       >     gc_socket_root_mid_gc_keeps_path_and_deletes_rest
       >     gc_socket_serves_before_graph_load_and_keeps_early_roots
       >     gc_store_dir_trailing_slash_is_normalized
       >
       > test result: FAILED. 24 passed; 21 failed; 0 ignored; 0 measured; 0 filtered out; finished in 11.77s
       >
       > error: test failed, to rerun pass `-p fast-nix-gc --test integration`
       For full logs, run:
         nix log /nix/store/dw3v1j29b30piq9gax8d76y8056swb2f-fast-nix-gc-0.1.0.drv