diff --git a/.github/ci/build-stable.sh b/.github/ci/build-stable.sh
new file mode 100755
index 00000000..0dadd610
--- /dev/null
+++ b/.github/ci/build-stable.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+## on push branch~=gh-readonly-queue/main/.*
+## on pull_request
+
+set -euo pipefail
+
+export RUSTUP_HOME=/ci/cache/rustup
+export CARGO_HOME=/ci/cache/cargo
+export CARGO_TARGET_DIR=/ci/cache/target
+
+hashtime restore /ci/cache/filetime.json || true
+hashtime save /ci/cache/filetime.json
+
+sed -i 's/channel.*/channel = "stable"/g' rust-toolchain.toml
+
+./ci_stable.sh
diff --git a/.github/ci/rust.sh b/.github/ci/build.sh
similarity index 95%
rename from .github/ci/rust.sh
rename to .github/ci/build.sh
index db1fc853..1c3a7f3b 100755
--- a/.github/ci/rust.sh
+++ b/.github/ci/build.sh
@@ -4,8 +4,6 @@
 
 set -euo pipefail
 
-echo Hello World!
-
 export RUSTUP_HOME=/ci/cache/rustup
 export CARGO_HOME=/ci/cache/cargo
 export CARGO_TARGET_DIR=/ci/cache/target
diff --git a/.github/ci/test.sh b/.github/ci/test.sh
new file mode 100755
index 00000000..a7140cfd
--- /dev/null
+++ b/.github/ci/test.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+## on push branch~=gh-readonly-queue/main/.*
+## on pull_request
+
+set -euo pipefail
+
+export RUSTUP_HOME=/ci/cache/rustup
+export CARGO_HOME=/ci/cache/cargo
+export CARGO_TARGET_DIR=/ci/cache/target
+
+hashtime restore /ci/cache/filetime.json || true
+hashtime save /ci/cache/filetime.json
+
+cargo test --manifest-path ./embassy-sync/Cargo.toml 
+cargo test --manifest-path ./embassy-embedded-hal/Cargo.toml 
+cargo test --manifest-path ./embassy-hal-common/Cargo.toml 
+cargo test --manifest-path ./embassy-time/Cargo.toml --features generic-queue
+
+cargo test --manifest-path ./embassy-boot/boot/Cargo.toml
+cargo test --manifest-path ./embassy-boot/boot/Cargo.toml --features nightly
+cargo test --manifest-path ./embassy-boot/boot/Cargo.toml --features nightly,ed25519-dalek
+cargo test --manifest-path ./embassy-boot/boot/Cargo.toml --features nightly,ed25519-salty
+
+#cargo test --manifest-path ./embassy-nrf/Cargo.toml --no-default-features --features nightly,nrf52840,time-driver-rtc1 ## broken doctests
+
+cargo test --manifest-path ./embassy-stm32/Cargo.toml --no-default-features --features nightly,stm32f429vg,exti,time-driver-any,exti
+cargo test --manifest-path ./embassy-stm32/Cargo.toml --no-default-features --features nightly,stm32f732ze,exti,time-driver-any,exti
+cargo test --manifest-path ./embassy-stm32/Cargo.toml --no-default-features --features nightly,stm32f769ni,exti,time-driver-any,exti
diff --git a/ci_stable.sh b/ci_stable.sh
index 55a2f89a..a67087ff 100755
--- a/ci_stable.sh
+++ b/ci_stable.sh
@@ -2,12 +2,9 @@
 
 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-boot/nrf/Cargo.toml --target thumbv7em-none-eabi --features embassy-nrf/nrf52840 \
     --- build --release --manifest-path embassy-boot/nrf/Cargo.toml --target thumbv8m.main-none-eabihf --features embassy-nrf/nrf9160-ns \