diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0e8e877..d989b3a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -62,6 +62,6 @@ jobs:
 
       - name: Run tests
         run: |
-          sudo -E env "PATH=$PATH" cargo test --no-default-features --features=full --verbose
+          sudo -E env "PATH=$PATH" cargo test --no-default-features --features=full --verbose -- --test-threads=1 --nocapture
           sudo chown -R $USER:$USER ./target
           sudo chown -R $USER:$USER ~/.cargo
diff --git a/easytier/src/connector/dns_connector.rs b/easytier/src/connector/dns_connector.rs
index 22ec16d..6d37e60 100644
--- a/easytier/src/connector/dns_connector.rs
+++ b/easytier/src/connector/dns_connector.rs
@@ -243,8 +243,7 @@ impl super::TunnelConnector for DNSTunnelConnector {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::common::global_ctx::{tests::get_mock_global_ctx, GlobalCtx};
-    use std::sync::Arc;
+    use crate::common::global_ctx::tests::get_mock_global_ctx;
 
     #[tokio::test]
     async fn test_txt() {