Split trybuild tests out to own job

.github/workflows/build.yml

@@ -13,7 +13,6 @@ jobs:
           - beta
           - stable
           - 1.40.0 # MSRV
-          - 1.59.0 # Used for trybuild; supports aarch64
         features:
           - ""
           - --no-default-features

.github/workflows/compiletests.yml

@@ -0,0 +1,26 @@
+name: Compile Test
+
+on: [push, pull_request]
+
+jobs:
+    compiletest:
+        runs-on: ubuntu-latest
+
+        env:
+            RUST_BACKTRACE: 1
+            RUSTFLAGS: "--cfg compiletests"
+
+        steps:
+            - uses: actions/checkout@v2
+
+            - uses: actions-rs/toolchain@v1
+              with:
+                  toolchain: 1.59.0
+                  override: true
+
+            - name: main crate
+              run: |
+                  cd derive_builder
+                  cargo build --verbose
+                  cargo test --no-fail-fast --verbose -- --nocapture
+                  cargo doc

derive_builder/Cargo.toml

@@ -26,6 +26,8 @@ derive_builder_macro = { version = "=0.11.2", path = "../derive_builder_macro" }
 [dev-dependencies]
 pretty_assertions = "0.6.1"
 rustversion = "1.0.4"
-trybuild = "1.0.38"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
+
+[target.'cfg(compiletests)'.dev-dependencies]
+trybuild = "1.0.38"

derive_builder/tests/compiletests.rs

@@ -1,3 +1,5 @@
+#![cfg(compiletests)]
+
 extern crate rustversion;
 extern crate trybuild;