update rustfmt

src/common.rs

@@ -1,4 +1,4 @@
-use std::fmt::{self, Write, Display};
+use std::fmt::{self, Display, Write};
 
 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
 pub enum Op {

tests/at-error.rs

@@ -13,4 +13,7 @@ error!(
 );
 error!(error_unquoted_string, "a {\n  @error hi;\n}\n", "Error: hi");
 error!(error_arithmetic, "a {\n  @error 1 + 1;\n}\n", "Error: 2");
-error!(error_is_inspected, "a {\n  @error null;\n}\n", "Error: null");
+error!(
+    error_is_inspected,
+    "a {\n  @error null;\n}\n", "Error: null"
+);