diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 6a8b370..f4dc905 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -24,4 +24,4 @@ jobs:
       - env:
           SOCKS5_SERVER: ${{ secrets.SOCKS5_SERVER }}
           HTTP_SERVER: ${{ secrets.HTTP_SERVER }}
-        run: sudo -E find -wholename './target/debug/deps/proxy-*' -executable -exec "{}" \;
+        run: sudo -E /home/runner/.cargo/bin/cargo test
diff --git a/tests/proxy.rs b/tests/proxy.rs
index a61bd32..017c482 100644
--- a/tests/proxy.rs
+++ b/tests/proxy.rs
@@ -167,7 +167,7 @@ mod tests {
     }
 
     fn require_var(var: &str) {
-        env::var(var).unwrap_or_else(|_| panic!("{}", "{var} environment variable required"));
+        env::var(var).unwrap_or_else(|_| panic!("{} environment variable required", var));
     }
 
     #[serial]