chore(ci): whoops, wrong commands for no-std tests

Signed-off-by: Eliza Weisman <[email protected]>

Author: hawkw

.github/workflows/CI.yml

@@ -370,9 +370,9 @@ jobs:
       working-directory: "tracing/test_static_max_level_features"
     - name: "Test tracing-core no-std support"
       run: cargo test --no-default-features
-      working-directory: tracing
+      working-directory: tracing-core
     - name: "Test tracing no-std support"
-      run: cargo test --no-default-features
+      run: cargo test --lib --no-default-features
       working-directory: tracing
       # this skips running doctests under the `--no-default-features` flag,
       # as rustdoc isn't aware of cargo's feature flags.