Use cargo feature instead of conditional compilation hacks

.github/workflows/build.yml

@@ -90,7 +90,7 @@ jobs:
         with:
           use-cross: false
           command: check
-          args: --examples --target=${{ matrix.target }}
+          args: --examples --target=${{ matrix.target }} --features __min_r1_43
 
       - name: cargo check -p homogeneous
         uses: actions-rs/cargo@v1

Cargo.toml

@@ -38,6 +38,10 @@ required-features = ["__v7"]
 name = "t-cfg"
 required-features = ["__v7"]
 
+[[example]]
+name = "t-cfg-resources"
+required-features = ["__min_r1_43"]
+
 [[example]]
 name = "t-schedule"
 required-features = ["__v7"]
@@ -77,6 +81,7 @@ heterogeneous = ["cortex-m-rtfm-macros/heterogeneous", "microamp"]
 homogeneous = ["cortex-m-rtfm-macros/homogeneous"]
 # used for testing this crate; do not use in applications
 __v7 =[]
+__min_r1_43 =[]
 
 [profile.release]
 codegen-units = 1

ci/script.sh

@@ -96,8 +96,18 @@ main() {
 
     if [ $TARGET = thumbv6m-none-eabi ]; then
         cargo check --target $T --examples
+
+        # Check examples with specific features not compatible with MSRV
+        if [[ $TRAVIS_RUST_VERSION != 1.*.* ]]; then
+            cargo check --target $T --examples --features __min_r1_43
+        fi
     else
         cargo check --target $T --examples --features __v7
+
+        # Check examples with specific features not compatible with MSRV
+        if [[ $TRAVIS_RUST_VERSION != 1.*.* ]]; then
+            cargo check --target $T --examples --features __v7,__min_r1_43
+        fi
     fi
 
     cargo check -p homogeneous --target $T --examples

examples/t-cfg-resources.rs

@@ -5,9 +5,6 @@
 
 use panic_halt as _;
 
-#[cfg(rustc_is_nightly)]
-mod example {
-
 #[rtfm::app(device = lm3s6965)]
 const APP: () = {
     struct Resources {
@@ -37,4 +34,3 @@ mod example {
         loop {}
     }
 };
-}