ci: fixup clippy and semver

.github/workflows/ci.yaml

@@ -173,7 +173,7 @@ jobs:
         # uses: obi1kenobi/cargo-semver-checks-action@v2
         uses: n0-computer/cargo-semver-checks-action@feat-baseline
         with:
-          package: iroh-gossip
+          package: iroh-metrics
           baseline-rev: ${{ env.HEAD_COMMIT_SHA }}
           use-cache: false
 
@@ -276,4 +276,4 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - run: pip install --user codespell[toml]
-    - run: codespell --ignore-words-list=ans,atmost,crate,inout,ratatui,ser,stayin,swarmin,worl --skip=CHANGELOG.md
+    - run: codespell --ignore-words-list=ans,atmost,crate,inout,ratatui,ser,stayin,swarmin,worl --skip=CHANGELOG.md

src/core.rs

@@ -144,6 +144,7 @@ impl Core {
     }
 
     /// Trieds to init the metrics.
+    #[cfg_attr(not(feature = "metrics"), allow(clippy::let_unit_value))]
     pub fn try_init<F: FnOnce(&mut Registry, &mut ErasedSyncSet)>(f: F) -> std::io::Result<()> {
         let mut registry = Registry::default();
         let mut metrics_map = ErasedSyncSet::new();