this derivation will be built:
  /nix/store/m3dbx2ywwnzqga5lvakygv8m42qyxcr0-harmonia-llvm-cov-3.1.0.drv
error: Cannot build '/nix/store/m3dbx2ywwnzqga5lvakygv8m42qyxcr0-harmonia-llvm-cov-3.1.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/v00pkphlkhp0wvcsxi57dxxz9m4z9nic-harmonia-llvm-cov-3.1.0
       Last 25 log lines:
       >         PASS [   0.710s] ( 520/2249) harmonia-cache::log test_build_log_endpoint
       >         PASS [   0.797s] ( 521/2249) harmonia-cache::signing test_signing
       >         PASS [   1.118s] ( 522/2249) harmonia-cache::chroot test_chroot
       >         PASS [   2.511s] ( 523/2249) harmonia-file-nar archive::restorer::proptests::proptest_restore_dump
       >         PASS [  30.005s] ( 524/2249) harmonia-cache::retry test_download_retry_over_flaky_connection
       > ────────────
       >      Summary [  30.007s] 524/2249 tests run: 508 passed, 16 exec failed, 0 skipped
       >        XFAIL [   0.000s] ( 141/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_2_Ok__b__more_______::chunk_size_12_51
       >        XFAIL [   0.000s] ( 142/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_2_Ok__b__more_______::chunk_size_04_4
       >        XFAIL [   0.000s] ( 143/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_2_Ok__b__more_______::chunk_size_09_9
       >        XFAIL [   0.000s] ( 144/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_2_Ok__b__more_______::chunk_size_08_8
       >        XFAIL [   0.000s] ( 145/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_2_Ok__b__more_______::chunk_size_11_11
       >        XFAIL [   0.000s] ( 146/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_3_Err_io__ErrorKind__StorageFull_::chunk_size_03_3
       >        XFAIL [   0.000s] ( 147/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_2_Ok__b__more_______::chunk_size_10_10
       >        XFAIL [   0.000s] ( 148/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_3_Err_io__ErrorKind__StorageFull_::chunk_size_02_2
       >        XFAIL [   0.000s] ( 149/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_2_Ok__b__more_______::chunk_size_13_64_000
       >        XFAIL [   0.000s] ( 150/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_3_Err_io__ErrorKind__StorageFull_::chunk_size_01_1
       >        XFAIL [   0.000s] ( 151/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_3_Err_io__ErrorKind__StorageFull_::chunk_size_05_5
       >        XFAIL [   0.000s] ( 152/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_3_Err_io__ErrorKind__StorageFull_::chunk_size_06_6
       >        XFAIL [   0.000s] ( 153/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_1_Ok__b_________::chunk_size_08_8
       >        XFAIL [   0.000s] ( 154/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_1_Ok__b_________::chunk_size_07_7
       >        XFAIL [   0.000s] ( 155/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_2_Ok__b__more_______::chunk_size_02_2
       >        XFAIL [   0.000s] ( 156/2249) harmonia-file-nar archive::read_nar::unittests::read_nar::case_8_dir_example::postfix_3_Err_io__ErrorKind__StorageFull_::chunk_size_04_4
       > warning: 1725/2249 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/m3dbx2ywwnzqga5lvakygv8m42qyxcr0-harmonia-llvm-cov-3.1.0.drv