Integrate cargo-careful for nightly tests on CI

Author: tyranron

.github/workflows/ci.yml

@@ -140,9 +140,15 @@ jobs:
       - uses: dtolnay/rust-toolchain@v1
         with:
           toolchain: ${{ matrix.toolchain }}
+          components: rust-src
       - run: rustup default ${{ matrix.toolchain }}
 
+      - run: cargo install cargo-careful
+        if: ${{ matrix.toolchain == 'nightly' }}
+
       - run: make test.cargo
+                  careful=${{ (matrix.toolchain == 'nightly' && 'yes')
+                           ||                                   'no' }}
 
 
 

Makefile

@@ -94,10 +94,21 @@ cargo.test: test.cargo
 # Run Rust tests of project crate.
 #
 # Usage:
-#	make test.cargo
+#	make test.cargo [careful=(no|yes)]
 
 test.cargo:
-	cargo test -p cucumber-expressions --all-features
+ifeq ($(careful),yes)
+ifeq ($(shell cargo install --list | grep cargo-careful),)
+	cargo install cargo-careful
+endif
+ifeq ($(shell rustup component list --toolchain=nightly \
+              | grep 'rust-src (installed)'),)
+	rustup component add --toolchain=nightly rust-src
+endif
+endif
+	cargo $(if $(call eq,$(careful),yes),+nightly careful,) test \
+		-p cucumber-expressions \
+		--all-features