Add LTO test

Author: antoyo

.github/workflows/release.yml

@@ -57,6 +57,10 @@ jobs:
         cargo test
         ./y.sh clean all
 
+    - name: Run y.sh cargo build
+      run: |
+        ./y.sh cargo build --release --manifest-path tests/hello-world/Cargo.toml
+
     - name: Prepare dependencies
       run: |
         git config --global user.email "[email protected]"

tests/hello-world/Cargo.toml

@@ -7,3 +7,6 @@ mylib = { path = "mylib" }
 
 [profile.dev]
 lto = "thin"
+
+[profile.release]
+lto = "fat"