tests: run trybuild tests known to be broken on nightly only on stable

.github/workflows/ci.yml

@@ -32,24 +32,13 @@ jobs:
           command: check
           args: --workspace --verbose --all-features --tests --examples
 
-      # only run trybuild tests with stable Rust
-
-      - name: Run "cargo test" (with trybuild tests)
+      - name: Run "cargo test"
         uses: actions-rs/cargo@v1
-        if: ${{ matrix.rust == 'stable' }}
         with:
           toolchain: ${{ matrix.rust }}
           command: test
           args: --workspace --verbose --all-features
 
-      - name: Run "cargo test" (without trybuild tests)
-        uses: actions-rs/cargo@v1
-        if: ${{ matrix.rust != 'stable' }}
-        with:
-          toolchain: ${{ matrix.rust }}
-          command: test
-          args: --workspace --verbose --all-features -- --skip try_build
-
   clippy:
     runs-on: ubuntu-latest
     steps:

dxr/Cargo.toml

@@ -29,6 +29,7 @@ thiserror = "1.0.30"
 chrono = { version = "0.4.19", features = ["clock", "std"], default-features = false }
 quickcheck = "1.0"
 quickcheck_macros = "1.0"
+rustversion = "1"
 trybuild = "1"
 
 [features]

dxr/tests/derive.rs

@@ -10,6 +10,7 @@ fn try_build_pass() {
     t.pass("tests/trybuild/collections.rs");
 }
 
+#[rustversion::stable]
 #[test]
 fn try_build_fail() {
     let t = trybuild::TestCases::new();
@@ -18,3 +19,12 @@ fn try_build_fail() {
     t.compile_fail("tests/trybuild/tuple.rs");
     t.compile_fail("tests/trybuild/enum.rs");
 }
+
+#[rustversion::nightly]
+#[test]
+fn try_build_fail() {
+    let t = trybuild::TestCases::new();
+    t.compile_fail("tests/trybuild/slice.rs");
+    t.compile_fail("tests/trybuild/tuple.rs");
+    t.compile_fail("tests/trybuild/enum.rs");
+}