these 4 derivations will be built:
  /nix/store/q6lwzvmlm6s5i3nh6xrkh19psj4985ws-Cargo.toml.drv
  /nix/store/xpdimmps4lab8faic45bg2hmm4b57q35-source.drv
  /nix/store/jh38sv2yz41s7vyziizf2bcdn4bikf06-harmonia-deps-3.3.0.drv
  /nix/store/q9kgvyhwlhb9kmhsyybzwcb12cm2ida3-harmonia-llvm-cov-3.3.0.drv
error: Cannot build '/nix/store/q9kgvyhwlhb9kmhsyybzwcb12cm2ida3-harmonia-llvm-cov-3.3.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/jg13aw4awfdia50zpbi6vz4p0p5gvgaj-harmonia-llvm-cov-3.3.0
       Last 25 log lines:
       >
       >     failures:
       >         archive::restorer::unittests::test_restore_does_not_follow_symlink::case_3_dangling_file
       >
       >     test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 423 filtered out; finished in 0.00s
       >
       >   stderr ───
       >
       >     thread 'archive::restorer::unittests::test_restore_does_not_follow_symlink::case_3_dangling_file' (93118227) panicked at harmonia-file-nar/src/archive/restorer.rs:627:14:
       >     called `Result::unwrap_err()` on an `Ok` value: ()
       >     note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
       >
       >         PASS [   0.010s] ( 425/2457) harmonia-file-nar archive::restorer::unittests::test_restore_errors
       >         PASS [   0.008s] ( 426/2457) harmonia-file-nar archive::restorer::unittests::test_restore_rejects_escape::case_01_dotdot
       >         PASS [   0.045s] ( 427/2457) harmonia-file-nar archive::restorer::unittests::test_restore_file_bigger_than_queue
       >         PASS [   1.120s] ( 428/2457) harmonia-cache::signing test_signing
       >         PASS [   1.705s] ( 429/2457) harmonia-file-nar archive::restorer::proptests::proptest_restore_dump
       >         PASS [  26.718s] ( 430/2457) harmonia-cache::retry test_download_retry_over_flaky_connection
       > ────────────
       >      Summary [  26.719s] 430/2457 tests run: 427 passed, 3 failed, 0 skipped
       >         FAIL [   0.011s] ( 421/2457) harmonia-file-nar archive::restorer::unittests::test_restore_does_not_follow_symlink::case_2_file
       >         FAIL [   0.014s] ( 423/2457) harmonia-file-nar archive::restorer::unittests::test_restore_does_not_follow_symlink::case_1_dir
       >         FAIL [   0.011s] ( 424/2457) harmonia-file-nar archive::restorer::unittests::test_restore_does_not_follow_symlink::case_3_dangling_file
       > warning: 2027/2457 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/q9kgvyhwlhb9kmhsyybzwcb12cm2ida3-harmonia-llvm-cov-3.3.0.drv