diff --git a/src/macros.rs b/src/macros.rs
index 655828c1a752270d7cb6bfc35242baea40e7e6df..bf66dde8d0c64dfd5e7024a99ae3f82e939afe35 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -1,34 +1,33 @@
 macro_rules! log {
     ($logger:expr, $($arg:tt)*) => {{
-        use std::fmt::Write;
-        writeln!($logger, $($arg)*).unwrap();
+        let _ = write!($logger.line_writer(), $($arg)*).unwrap();
     }};
 }
-macro_rules! assert_let {
-    ($pat:pat = $expr:expr => $work:expr) => {
-        if let $pat = $expr {
-            $work
-        } else {
-            panic!("assert_let failed");
-        }
-    };
-}
+// macro_rules! assert_let {
+//     ($pat:pat = $expr:expr => $work:expr) => {
+//         if let $pat = $expr {
+//             $work
+//         } else {
+//             panic!("assert_let failed");
+//         }
+//     };
+// }
 
-#[test]
-fn assert_let() {
-    let x = Some(5);
-    let z = assert_let![Some(y) = x => {
-        println!("{:?}", y);
-        3
-    }];
-    println!("{:?}", z);
-}
+// #[test]
+// fn assert_let() {
+//     let x = Some(5);
+//     let z = assert_let![Some(y) = x => {
+//         println!("{:?}", y);
+//         3
+//     }];
+//     println!("{:?}", z);
+// }
 
-#[test]
-#[should_panic]
-fn must_let_panic() {
-    let x: Option<u32> = None;
-    assert_let![Some(y) = x => {
-        println!("{:?}", y);
-    }];
-}
+// #[test]
+// #[should_panic]
+// fn must_let_panic() {
+//     let x: Option<u32> = None;
+//     assert_let![Some(y) = x => {
+//         println!("{:?}", y);
+//     }];
+// }