this derivation will be built:
  /nix/store/gdfz2g46k1lgq3iyplxd04qkcvlw0zvp-iets-test-0.1.0.drv
error: Cannot build '/nix/store/gdfz2g46k1lgq3iyplxd04qkcvlw0zvp-iets-test-0.1.0.drv'.
       Reason: builder failed with exit code 101.
       Output paths:
         /nix/store/rwgqcjs4whvpfjfb5vfhyvrinjmbhy88-iets-test-0.1.0
       Last 25 log lines:
       > thread 'fetch::http::tests::credentials_in_the_url_are_sent_and_never_printed' (5385) panicked at src/fetch/http.rs:986:57:
       > called `Result::unwrap()` on an `Err` value: Usage("cannot fetch 'http://user:***@127.0.0.1:41681/x': no response (stalled-download-timeout)")
       >
       > ---- fetch::http::tests::credentials_stay_on_the_first_origin stdout ----
       >
       > thread 'fetch::http::tests::credentials_stay_on_the_first_origin' (5386) panicked at src/fetch/http.rs:889:59:
       > called `Result::unwrap()` on an `Err` value: Usage("cannot fetch 'http://127.0.0.1:45553/': no response (stalled-download-timeout)")
       >
       > ---- progress::tests::a_transfer_that_does_not_move_says_so stdout ----
       >
       > thread 'progress::tests::a_transfer_that_does_not_move_says_so' (5513) panicked at src/progress.rs:444:9:
       > assertion `left == right` failed
       >   left: "⏵ downloading 'u', 2.0 KiB (46s, no data for 46s)"
       >  right: "⏵ downloading 'u', 2.0 KiB (45s, no data for 45s)"
       >
       >
       > failures:
       >     fetch::http::tests::a_transient_status_is_retried
       >     fetch::http::tests::credentials_in_the_url_are_sent_and_never_printed
       >     fetch::http::tests::credentials_stay_on_the_first_origin
       >     progress::tests::a_transfer_that_does_not_move_says_so
       >
       > test result: FAILED. 444 passed; 4 failed; 5 ignored; 0 measured; 0 filtered out; finished in 90.88s
       >
       > error: test failed, to rerun pass `--lib`
       For full logs, run:
         nix log /nix/store/gdfz2g46k1lgq3iyplxd04qkcvlw0zvp-iets-test-0.1.0.drv