diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 0827abb..0be16db 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -41,14 +41,17 @@ jobs:
         run: cargo build
 
       - name: build example -- glibc release
-        run: cd example && make clean && make PROFILE=release TARGET=aarch64-unknown-linux-gnu
+        run: cd example && make clean && make TARGET=aarch64-unknown-linux-gnu PROFILE=release
       - name: build example -- glibc debug
-        run: cd example && make clean && make PROFILE=debug TARGET=aarch64-unknown-linux-gnu
-      - name: build example -- glibc size-optimized
-        run: cd example && make clean && make PROFILE=size-optimized TARGET=aarch64-unknown-linux-gnu
+        run: cd example && make clean && make TARGET=aarch64-unknown-linux-gnu PROFILE=debug
       - name: build example -- musl release
-        run: cd example && make clean && make PROFILE=release MUSL=1 TARGET=aarch64-unknown-linux-musl
+        run: cd example && make clean && make TARGET=aarch64-unknown-linux-musl PROFILE=release MUSL=1
       - name: build example -- musl debug
-        run: cd example && make clean && make PROFILE=debug MUSL=1 TARGET=aarch64-unknown-linux-musl
+        run: cd example && make clean && make TARGET=aarch64-unknown-linux-musl PROFILE=debug MUSL=1
+
+      - name: install unstable rust
+        run: sudo apt install rustup && rustup toolchain install aarch64-unknown-linux-gnu && rustup toolchain install aarch64-unknown-linux-musl
+      - name: build example -- glibc size-optimized
+        run: cd example && make clean && make TARGET=aarch64-unknown-linux-gnu PROFILE=size-optimized CARGO="rustup run nightly cargo"
       - name: build example -- musl size-optimized
-        run: cd example && make clean && make PROFILE=size-optimized MUSL=1 LTO=1 TARGET=aarch64-unknown-linux-musl
+        run: cd example && make clean && make TARGET=aarch64-unknown-linux-musl PROFILE=size-optimized MUSL=1 LTO=1 CARGO="rustup run nightly cargo"