ci: only deny warnings, not all clippy lints — heartwood

Change configuration of native CI to only deny warnings from the compiler, but no all clippy lints.

Previously we ran “cargo clippy –all-targets –workspace – –deny clippy::all”, which overrides the allows for specific clippy lints in the source code. We don’t want that.

Signed-off-by: Lars Wirzenius liw@liw.fi

   rustc --version
   cargo fmt --check
   cargo clippy --all-targets --workspace -- --deny clippy::all
   cargo clippy --all-targets --workspace -- --deny warnings
   cargo build --all-targets --workspace
   cargo doc --workspace
   cargo doc --workspace --no-deps
   cargo test --workspace --no-fail-fast