prefer required-features

.github/workflows/ci.yml

@@ -38,10 +38,10 @@ jobs:
       - name: Enable nightly-only tests
         run: echo RUSTFLAGS=${RUSTFLAGS}\ --cfg=thiserror_nightly_testing >> $GITHUB_ENV
         if: matrix.rust == 'nightly'
-      - run: cargo test --all
-      - name: Enable no_std
+      - name: Test no-default-features
         run: cargo test --all --no-default-features
         if: matrix.rust != '1.56.0'
+      - run: cargo test --all
       - uses: actions/upload-artifact@v4
         if: matrix.rust == 'nightly' && always()
         with:

Cargo.toml

@@ -11,8 +11,7 @@ license = "MIT OR Apache-2.0"
 repository = "https://github.com/dtolnay/thiserror"
 rust-version = "1.56"
 
-# without the `std` feature (i.e. `no_std`):
-# rust-version = "1.81"
+# without the `std` feature (i.e. `no_std`): rust-version = "1.81"
 
 [dependencies]
 thiserror-impl = { version = "=1.0.63", path = "impl" }
@@ -33,3 +32,19 @@ rustdoc-args = ["--generate-link-to-definition"]
 [features]
 std = []
 default = ["std"]
+
+[[test]]
+name = "compiletest"
+required-features = ["std"]
+
+[[test]]
+name = "test_lints"
+required-features = ["std"]
+
+[[test]]
+name = "test_path"
+required-features = ["std"]
+
+[[test]]
+name = "test_transparent"
+required-features = ["std"]

tests/compiletest.rs

@@ -1,6 +1,4 @@
-#[allow(unused_attributes)]
 #[rustversion::attr(not(nightly), ignore = "requires nightly")]
-#[cfg_attr(not(feature = "std"), ignore = "requires std")]
 #[cfg_attr(miri, ignore = "incompatible with miri")]
 #[test]
 fn ui() {

tests/test_lints.rs

@@ -1,4 +1,3 @@
-#![cfg(feature = "std")]
 #![allow(clippy::mixed_attributes_style)]
 
 use thiserror::Error;

tests/test_path.rs

@@ -1,5 +1,3 @@
-#![cfg(feature = "std")]
-
 use core::fmt::Display;
 use ref_cast::RefCast;
 use std::path::{Path, PathBuf};

tests/test_transparent.rs

@@ -1,5 +1,3 @@
-#![cfg(feature = "std")]
-
 use anyhow::anyhow;
 use std::error::Error as _;
 use std::io;