diff --git a/parser/src/tests.rs b/parser/src/tests.rs
index e24e2bb..9b292a2 100644
--- a/parser/src/tests.rs
+++ b/parser/src/tests.rs
@@ -11,7 +11,7 @@ fn parse<'a, T: Debug>(
 ) -> super::Result<String> {
     let mut parser = Parser::new(arena);
     parser
-        .parse_top(&mut Lexer::new(source.as_bytes()), true)
+        .parse_top(&mut Lexer::new(source.as_bytes(), arena), true)
         .map(|x| format!("{:?}", selector(x)))
 }
 
diff --git a/tests/by-util/test_awk.rs b/tests/by-util/test_awk.rs
index 9841b8c..f451bb9 100644
--- a/tests/by-util/test_awk.rs
+++ b/tests/by-util/test_awk.rs
@@ -22,9 +22,8 @@ fn write_to_dev_full_does_not_panic() {
     use std::fs::OpenOptions;
     use std::process::{Command, Stdio};
 
-    let dev_full = match OpenOptions::new().write(true).open("/dev/full") {
-        Ok(f) => f,
-        Err(_) => return, // /dev/full not available; skip.
+    let Ok(dev_full) = OpenOptions::new().write(true).open("/dev/full") else {
+        return; // /dev/full not available; skip.
     };
     let output = Command::new(super::TESTS_BINARY)
         .arg("BEGIN { print 1 }")