Merge pull request #410 from dtolnay/testnostd

Add CI step to test with "std" disabled

.github/workflows/ci.yml

@@ -41,6 +41,7 @@ jobs:
       - run: cargo test --workspace --exclude thiserror_no_std_test
       - run: cargo test --manifest-path tests/no-std/Cargo.toml
         if: matrix.rust != '1.70.0'
+      - run: cargo test --no-default-features
       - uses: actions/upload-artifact@v4
         if: matrix.rust == 'nightly' && always()
         with:

tests/test_backtrace.rs

@@ -1,3 +1,4 @@
+#![cfg(feature = "std")]
 #![cfg_attr(thiserror_nightly_testing, feature(error_generic_member_access))]
 
 use thiserror::Error;

tests/test_expr.rs

@@ -1,6 +1,7 @@
 #![allow(clippy::iter_cloned_collect, clippy::uninlined_format_args)]
 
 use core::fmt::Display;
+#[cfg(feature = "std")]
 use std::path::PathBuf;
 use thiserror::Error;
 

tests/test_option.rs

@@ -1,3 +1,4 @@
+#![cfg(feature = "std")]
 #![cfg_attr(thiserror_nightly_testing, feature(error_generic_member_access))]
 
 #[cfg(thiserror_nightly_testing)]