chore(ci): fix nextest exit code 4 and silence unexpected_cfg warnings

Author: markkovari

.github/workflows/tests.yml

@@ -92,7 +92,7 @@ jobs:
         working-directory: ${{ matrix.project }}
         continue-on-error: true
       - name: Run Rust tests
-        run: cargo nextest run
+        run: cargo nextest run --no-tests=pass
         working-directory: ${{ matrix.project }}
         env:
           RUSTFLAGS: --cfg advent_of_code_ci

aoc-rust-common/Cargo.toml

@@ -15,3 +15,6 @@ insta = { version = "1.47.2", features = ["yaml"] }
 [[bench]]
 name = "main"
 harness = false
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(advent_of_code_ci)'] }