diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 767e4224..f1256320 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -12,11 +12,11 @@ env:
 jobs:
   all:
     runs-on: ubuntu-20.04
-    needs: [build, test]
+    needs: [build-nightly, build-stable, test]
     steps:
       - name: Done
         run: exit 0
-  build:
+  build-nightly:
     runs-on: ubuntu-latest
     permissions:
       id-token: write
@@ -41,6 +41,28 @@ jobs:
           chmod +x /usr/local/bin/cargo-batch
           ./ci.sh
           rm -rf target_ci/*{,/release}/{build,deps,.fingerprint}/{lib,}{embassy,stm32}*
+  build-stable:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+      - name: Cache multiple paths
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target_ci_stable
+          key: rust-stable-${{ runner.os }}-${{ hashFiles('rust-toolchain.toml') }}
+      - name: build
+        run: |
+          curl -L -o /usr/local/bin/cargo-batch https://github.com/embassy-rs/cargo-batch/releases/download/batch-0.1.0/cargo-batch
+          chmod +x /usr/local/bin/cargo-batch
+          ./ci_stable.sh
+          rm -rf target_ci_stable/*{,/release}/{build,deps,.fingerprint}/{lib,}{embassy,stm32}*
 
   test:
     runs-on: ubuntu-latest
diff --git a/.gitignore b/.gitignore
index 92f9a32b..144dd703 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 target
 target_ci
+target_ci_stable
 Cargo.lock
 third_party
 /Cargo.toml
diff --git a/ci_stable.sh b/ci_stable.sh
new file mode 100755
index 00000000..c4ec3082
--- /dev/null
+++ b/ci_stable.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+set -euo pipefail
+
+export CARGO_TARGET_DIR=$PWD/target_ci_stable
+export RUSTFLAGS=-Dwarnings
+export DEFMT_LOG=trace
+
+sed -i 's/channel.*/channel = "stable"/g' rust-toolchain.toml
+
+cargo batch  \
+    --- build --release --manifest-path embassy/Cargo.toml --target thumbv7em-none-eabi \
+    --- build --release --manifest-path embassy/Cargo.toml --target thumbv7em-none-eabi --features log,executor-agnostic \
+    --- build --release --manifest-path embassy/Cargo.toml --target thumbv7em-none-eabi --features defmt \
+    --- build --release --manifest-path embassy/Cargo.toml --target thumbv6m-none-eabi --features defmt \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nrf52805,gpiote,time-driver-rtc1 \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nrf52810,gpiote,time-driver-rtc1 \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nrf52811,gpiote,time-driver-rtc1 \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nrf52820,gpiote,time-driver-rtc1 \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nrf52832,gpiote,time-driver-rtc1 \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nrf52833,gpiote,time-driver-rtc1,unstable-traits \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv8m.main-none-eabihf --features nrf9160-s,gpiote,time-driver-rtc1 \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv8m.main-none-eabihf --features nrf9160-ns,gpiote,time-driver-rtc1,unstable-traits \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv8m.main-none-eabihf --features nrf5340-app-s,gpiote,time-driver-rtc1,unstable-traits \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv8m.main-none-eabihf --features nrf5340-app-ns,gpiote,time-driver-rtc1 \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv8m.main-none-eabihf --features nrf5340-net,gpiote,time-driver-rtc1,unstable-traits \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nrf52840,gpiote,time-driver-rtc1 \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nrf52840,log,gpiote,time-driver-rtc1 \
+    --- build --release --manifest-path embassy-nrf/Cargo.toml --target thumbv7em-none-eabi --features nrf52840,defmt,gpiote,time-driver-rtc1,unstable-traits \
+    --- build --release --manifest-path examples/nrf/Cargo.toml --target thumbv7em-none-eabi --no-default-features --out-dir out/examples/nrf --bin raw_spawn \