diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index d9440450..945208de 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -27,7 +27,7 @@ jobs:
         os:
           - macos-latest
           - ubuntu-latest
-          - windows-latest
+          # - windows-latest
         sdk:
           - latest
 
@@ -106,8 +106,8 @@ jobs:
       matrix:
         os:
           - macos-latest
-          - ubuntu-latest
-          - windows-latest
+          # - ubuntu-latest
+          # - windows-latest
         sdk:
           - latest
 
@@ -138,17 +138,16 @@ jobs:
 
       - name: Test
         run: |
-          cargo test -p=cargo-playdate -- --nocapture
+          cargo test -p=cargo-playdate -- --nocapture --test-threads=1
           rm -rf ./target/tmp
 
       - name: Test (+usb)
         run: |
-          cargo test -p=cargo-playdate --features=usb -- --nocapture
+          cargo test -p=cargo-playdate --features=usb -- --nocapture --test-threads=1
           rm -rf ./target/tmp
 
       - name: Install
-        run: |
-          cargo install -p=cargo-playdate --debug
+        run: cargo install --path=./cargo --debug
 
       - name: Examples
         run: |
diff --git a/cargo/tests/build/simple.rs b/cargo/tests/build/simple.rs
index c49ae113..09d7ef88 100644
--- a/cargo/tests/build/simple.rs
+++ b/cargo/tests/build/simple.rs
@@ -20,7 +20,11 @@ fn run_build(crate_path: &Path,
 	               .map(Into::into)
 	               .chain([OsString::from(target_dir_arg)]);
 	let output = Tool::build(&crate_path, args)?;
-	assert!(output.status.success());
+	assert!(
+	        output.status.success(),
+	        "Tool failed with stderr:\n{}",
+	        std::str::from_utf8(&output.stderr).unwrap()
+	);
 	Ok((output, target_dir))
 }
 
@@ -262,7 +266,7 @@ mod examples {
 	}
 
 	#[test]
-	/// target: playdate hardware
+	/// target: playdate hardware+simulator(host)
 	fn sim_dev_release_examples() -> Result<()> {
 		let dev_target = DEVICE_TARGET;
 		let host_target = target_triple();