these 5 derivations will be built:
  /nix/store/gmkpmnz66wvyk1rihwzi28mb47z7cynz-vendor-registry.drv
  /nix/store/g2dx10idc1qrccv212rfv3gbk7j7g808-vendor-cargo-deps.drv
  /nix/store/yg0m194w7bz5wfbp4vrdh16cfr4dnxgq-source.drv
  /nix/store/yb1hk2jz1w5jfws063s2nrcbaw19yyvs-herdr-eternal-deps-0.1.0.drv
  /nix/store/wmczz6sm7ck921g3rxn67l4xi0znc2wv-herdr-eternal-test-0.1.0.drv
error: Cannot build '/nix/store/wmczz6sm7ck921g3rxn67l4xi0znc2wv-herdr-eternal-test-0.1.0.drv'.
       Reason: builder failed with exit code 101.
       Output paths:
         /nix/store/ms2bid9xy5kmscfwgzq286s0ap38am0s-herdr-eternal-test-0.1.0
       Last 25 log lines:
       > Running phase: checkPhase
       > +++ command cargo test --release --locked
       >    Compiling herdr-eternal-proto v0.1.0 (/private/var/tb/8/scratch/2b2a1fb80547fb3b/build/source/proto)
       >    Compiling herdr-eternal-server v0.1.0 (/private/var/tb/8/scratch/2b2a1fb80547fb3b/build/source/server)
       >    Compiling herdr-eternal-ssh v0.1.0 (/private/var/tb/8/scratch/2b2a1fb80547fb3b/build/source/client)
       > error[E0609]: no field `key_pair` on type `CertifiedKey<KeyPair>`
       >   --> client/tests/quic.rs:15:36
       >    |
       > 15 |     std::fs::write(&key_path, cert.key_pair.serialize_pem()).unwrap();
       >    |                                    ^^^^^^^^ unknown field
       >    |
       >    = note: available fields are: `cert`, `signing_key`
       >
       > For more information about this error, try `rustc --explain E0609`.
       > error: could not compile `herdr-eternal-ssh` (test "quic") due to 1 previous error
       > warning: build failed, waiting for other jobs to finish...
       > error[E0609]: no field `key_pair` on type `rcgen::CertifiedKey<rcgen::KeyPair>`
       >    --> client/src/channel.rs:232:67
       >     |
       > 232 |         let key = rustls_pki_types::PrivatePkcs8KeyDer::from(cert.key_pair.serialize_der());
       >     |                                                                   ^^^^^^^^ unknown field
       >     |
       >     = note: available fields are: `cert`, `signing_key`
       >
       > error: could not compile `herdr-eternal-ssh` (lib test) due to 1 previous error
       For full logs, run:
         nix log /nix/store/wmczz6sm7ck921g3rxn67l4xi0znc2wv-herdr-eternal-test-0.1.0.drv