add test and remove debug print

.github/driver.sh

@@ -26,4 +26,9 @@ unset CARGO_MANIFEST_DIR
 sed -e "s,tests/ui,\$DIR," -e "/= help/d" cstring.stderr > normalized.stderr
 diff normalized.stderr tests/ui/cstring.stderr
 
+
+# make sure "clippy-driver --rustc --arg" and "rustc --arg" behave the same
+SYSROOT=`rustc --print sysroot`
+diff <(LD_LIBRARY_PATH=${SYSROOT}/lib ./target/debug/clippy-driver --rustc --version --verbose) <(rustc --version --verbose)
+
 # TODO: CLIPPY_CONF_DIR / CARGO_MANIFEST_DIR

src/driver.rs

@@ -355,7 +355,6 @@ pub fn main() {
                 args.extend(vec!["--sysroot".into(), sys_root]);
             };
 
-            println!("args: {:?}", args);
             return rustc_driver::run_compiler(&args, &mut DefaultCallbacks, None, None);
         }