this derivation will be built:
  /nix/store/154zcbv8mnpyr7z8f1wqbdmy8p6clyqm-harmonia-llvm-cov-3.3.0.drv
error: Cannot build '/nix/store/154zcbv8mnpyr7z8f1wqbdmy8p6clyqm-harmonia-llvm-cov-3.3.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/j1qn8dms76vhlcdw0s33rdar4c8hlasa-harmonia-llvm-cov-3.3.0
       Last 25 log lines:
       >         PASS [   0.070s] (2005/2515) harmonia-store-derivation::json_upstream derived_path::test_single_derived_path_opaque::to_json
       >         PASS [   0.190s] (2006/2515) harmonia-store-aterm raw_output::tests::derivation_output_roundtrips
       >         PASS [   0.134s] (2007/2515) harmonia-store-derivation derived_path::path::unittests::proptest_derived_path_display_parse
       >         PASS [   0.136s] (2008/2515) harmonia-store-derivation realisation::unittests::proptest_drv_output_display_parse
       >         PASS [   0.290s] (2009/2515) harmonia-protocol wire_roundtrip::roundtrip_build_result
       >         PASS [   0.295s] (2010/2515) harmonia-protocol wire_roundtrip::roundtrip_unkeyed_realisation
       >         PASS [   0.465s] (2011/2515) harmonia-protocol wire_roundtrip::roundtrip_realisation
       >         PASS [   1.360s] (2012/2515) harmonia-file-nar archive::parser::unittests::proptest_parse_stream
       >         PASS [   1.498s] (2013/2515) harmonia-cache::chroot test_chroot
       >         PASS [   0.650s] (2014/2515) harmonia-store-aterm input_address::tests::fill_outputs_consistent_with_make_output_path
       >         PASS [   0.611s] (2015/2515) harmonia-store-db::graph maybe_vacuum_runs_after_bulk_delete
       >         PASS [   0.767s] (2016/2515) harmonia-store-aterm input_address::tests::hash_derivation_deterministic
       >         PASS [   0.792s] (2017/2515) harmonia-store-aterm input_address::tests::fill_outputs_updates_env
       >         PASS [   1.753s] (2018/2515) harmonia-cache::signing test_signing
       >         PASS [   1.339s] (2019/2515) harmonia-store-aterm input_address::tests::hash_derivation_varies
       >         PASS [   2.620s] (2020/2515) harmonia-protocol ser::mock::proptests::proptest_mock
       >         PASS [   3.130s] (2021/2515) harmonia-file-nar archive::restorer::proptests::proptest_restore_dump
       >         PASS [  11.831s] (2022/2515) harmonia-protocol wire_roundtrip::roundtrip_query_missing_result
       >         PASS [  25.366s] (2023/2515) harmonia-cache::retry test_download_retry_over_flaky_connection
       > ────────────
       >      Summary [  25.368s] 2023/2515 tests run: 2021 passed, 2 failed, 0 skipped
       >         FAIL [   0.014s] (1896/2515) harmonia-store-derivation::json_upstream derived_path::test_derived_path_built::to_json
       >         FAIL [   0.073s] (1992/2515) harmonia-store-derivation::json_upstream derived_path::test_derived_path_built::from_json
       > warning: 492/2515 tests were not run due to test failure (run with --no-fail-fast to run all tests, or run with --max-fail)
       > error: test run failed
       For full logs, run:
         nix log /nix/store/154zcbv8mnpyr7z8f1wqbdmy8p6clyqm-harmonia-llvm-cov-3.3.0.drv