diff --git a/.cirrus.yml b/.cirrus.yml
new file mode 100644
index 000000000..ca38d0537
--- /dev/null
+++ b/.cirrus.yml
@@ -0,0 +1,20 @@
+env:
+  CARGO_INCREMENTAL: '0'
+  CARGO_NET_RETRY: '10'
+  CARGO_TERM_COLOR: always
+  RUST_BACKTRACE: '1'
+  RUSTDOCFLAGS: -D warnings
+  RUSTFLAGS: -D warnings
+  RUSTUP_MAX_RETRIES: '10'
+
+test_task:
+  name: test (aarch64-unknown-linux-gnu)
+  env:
+    TARGET: aarch64-unknown-linux-gnu
+  arm_container:
+    image: rust:latest
+  setup_script:
+    - rustup toolchain add nightly && rustup default nightly
+  test_script:
+    - cargo test --all --all-features --exclude benchmarks -- --test-threads=1
+    - cargo test --all --all-features --exclude benchmarks --release -- --test-threads=1
diff --git a/.github/bors.toml b/.github/bors.toml
index 0b9053503..6fe4e718f 100644
--- a/.github/bors.toml
+++ b/.github/bors.toml
@@ -1 +1,4 @@
-status = ["ci"]
+status = [
+    "ci",
+    "test (aarch64-unknown-linux-gnu)",
+]
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7bb15f0e1..0e1df94b1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,8 +13,13 @@ on:
     - cron: '0 1 * * *'
 
 env:
-  RUSTFLAGS: -Dwarnings
+  CARGO_INCREMENTAL: 0
+  CARGO_NET_RETRY: 10
+  CARGO_TERM_COLOR: always
   RUST_BACKTRACE: 1
+  RUSTDOCFLAGS: -D warnings
+  RUSTFLAGS: -D warnings
+  RUSTUP_MAX_RETRIES: 10
 
 defaults:
   run:
diff --git a/ci/docs.sh b/ci/docs.sh
index 0ad3a0a96..aa41819c5 100755
--- a/ci/docs.sh
+++ b/ci/docs.sh
@@ -3,6 +3,4 @@ set -euxo pipefail
 IFS=$'\n\t'
 cd "$(dirname "$0")"/..
 
-export RUSTDOCFLAGS="-D warnings"
-
 cargo doc --no-deps --all --all-features
diff --git a/ci/test.sh b/ci/test.sh
index ecaf162ee..b73b2c145 100755
--- a/ci/test.sh
+++ b/ci/test.sh
@@ -6,17 +6,17 @@ cd "$(dirname "$0")"/..
 if [[ -n "${RUST_TARGET:-}" ]]; then
     # If RUST_TARGET is specified, use cross for testing.
     cross test --all --target "$RUST_TARGET" --exclude benchmarks -- --test-threads=1
+    cross test --all --target "$RUST_TARGET" --exclude benchmarks --release -- --test-threads=1
 
     # For now, the non-host target only runs tests.
     exit 0
 fi
 
 # Otherwise, run tests and checks with the host target.
-cargo check --all --bins --examples --tests --exclude benchmarks
 cargo test --all --all-features --exclude benchmarks -- --test-threads=1
+cargo test --all --all-features --exclude benchmarks --release -- --test-threads=1
 
 if [[ "$RUST_VERSION" == "nightly"* ]]; then
     # Benchmarks are only checked on nightly because depending on unstable features.
-    cargo check --all --benches
-    cargo check --bins --manifest-path crossbeam-channel/benchmarks/Cargo.toml
+    cargo check --all --all-targets
 fi