these 7 derivations will be built:
  /nix/store/x3433my5kmr773rjfl8jzd7qrssvznx4-Cargo.toml.drv
  /nix/store/0gfl9iajfz03nv5hs4lhphfw6bc7ij7r-source.drv
  /nix/store/5nwhpp1i50s72rg7dcmsbixi8l3i006m-cargo-package-chacha20-0.10.2.drv
  /nix/store/7dj073b3c6nkk6qx9jyzcl2y3cjqdw5c-vendor-registry.drv
  /nix/store/c6hmyj0varnhdbab87bfzwn8bg0ax9rr-vendor-cargo-deps.drv
  /nix/store/9xz18jcrm2l0kjgs3g0frzclxn6v8hg5-tincd-deps-0.1.0.drv
  /nix/store/flhgxyamf4hbhwhhr1mp3yv9b3d5nain-tincd-clippy-0.1.0.drv
error: Cannot build '/nix/store/flhgxyamf4hbhwhhr1mp3yv9b3d5nain-tincd-clippy-0.1.0.drv'.
       Reason: builder failed with exit code 101.
       Output paths:
         /nix/store/37xywg414s94dz6f03lbs54lj4l6yq3f-tincd-clippy-0.1.0
       Last 25 log lines:
       >   --> crates/tinc-sptps/tests/vs_c.rs:9:5
       >    |
       >  9 | use chacha20::ChaCha20Legacy;
       >    |     ^^^^^^^^^^^^^^^^^^^^^^^^ no `ChaCha20Legacy` in the root
       >    |
       > note: found an item that was configured out
       >   --> /nix/store/8mz4dwlcvq7a0zd05js9p4kaxk7lp707-vendor-cargo-deps/c19b7c6f923b580ac259164a89f2577984ad5ab09ee9d583b888f934adbbe8d0/chacha20-0.10.2/src/lib.rs:28:18
       >    |
       > 27 | #[cfg(feature = "legacy")]
       >    |       ------------------ the item is gated behind the `legacy` feature
       > 28 | pub use legacy::{ChaCha20Legacy, ChaCha20LegacyCore, LegacyNonce};
       >    |                  ^^^^^^^^^^^^^^
       >
       > error: unused import: `KeyIvInit`
       >   --> crates/tinc-sptps/tests/vs_c.rs:10:24
       >    |
       > 10 | use chacha20::cipher::{KeyIvInit, StreamCipher, StreamCipherSeek};
       >    |                        ^^^^^^^^^
       >    |
       >    = note: `-D unused-imports` implied by `-D warnings`
       >    = help: to override `-D warnings` add `#[allow(unused_imports)]`
       >
       > For more information about this error, try `rustc --explain E0432`.
       > error: could not compile `tinc-sptps` (test "vs_c") due to 2 previous errors
       > warning: build failed, waiting for other jobs to finish...
       For full logs, run:
         nix log /nix/store/flhgxyamf4hbhwhhr1mp3yv9b3d5nain-tincd-clippy-0.1.0.drv