diff --git a/src/tools/miri/tests/pass/align_offset_symbolic.rs b/src/tools/miri/tests/pass/align_offset_symbolic.rs
index c32fa2c8f9b..dec3d779a78 100644
--- a/src/tools/miri/tests/pass/align_offset_symbolic.rs
+++ b/src/tools/miri/tests/pass/align_offset_symbolic.rs
@@ -62,7 +62,10 @@ fn test_from_utf8() {
     const N: usize = 10;
     let vec = vec![0x4141414141414141u64; N];
     let content = unsafe { std::slice::from_raw_parts(vec.as_ptr() as *const u8, 8 * N) };
-    println!("{:?}", std::str::from_utf8(content).unwrap());
+    assert_eq!(
+        std::str::from_utf8(content).unwrap(),
+        "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
+    );
 }
 
 fn test_u64_array() {
diff --git a/src/tools/miri/tests/pass/align_offset_symbolic.stdout b/src/tools/miri/tests/pass/align_offset_symbolic.stdout
deleted file mode 100644
index 66d43994815..00000000000
--- a/src/tools/miri/tests/pass/align_offset_symbolic.stdout
+++ /dev/null
@@ -1 +0,0 @@
-"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
diff --git a/src/tools/miri/tests/pass/vecdeque.rs b/src/tools/miri/tests/pass/vecdeque.rs
index ccecf3d30a4..77c4ca5a04e 100644
--- a/src/tools/miri/tests/pass/vecdeque.rs
+++ b/src/tools/miri/tests/pass/vecdeque.rs
@@ -31,8 +31,8 @@ fn main() {
     }
 
     // Regression test for Debug impl's
-    println!("{:?} {:?}", dst, dst.iter());
-    println!("{:?}", VecDeque::<u32>::new().iter());
+    format!("{:?} {:?}", dst, dst.iter());
+    format!("{:?}", VecDeque::<u32>::new().iter());
 
     for a in dst {
         assert_eq!(*a, 2);
diff --git a/src/tools/miri/tests/pass/vecdeque.stack.stdout b/src/tools/miri/tests/pass/vecdeque.stack.stdout
deleted file mode 100644
index 63de960ee2b..00000000000
--- a/src/tools/miri/tests/pass/vecdeque.stack.stdout
+++ /dev/null
@@ -1,2 +0,0 @@
-[2, 2] Iter([2, 2], [])
-Iter([], [])
diff --git a/src/tools/miri/tests/pass/vecdeque.tree.stdout b/src/tools/miri/tests/pass/vecdeque.tree.stdout
deleted file mode 100644
index 63de960ee2b..00000000000
--- a/src/tools/miri/tests/pass/vecdeque.tree.stdout
+++ /dev/null
@@ -1,2 +0,0 @@
-[2, 2] Iter([2, 2], [])
-Iter([], [])
diff --git a/src/tools/miri/tests/pass/vecdeque.tree_uniq.stdout b/src/tools/miri/tests/pass/vecdeque.tree_uniq.stdout
deleted file mode 100644
index 63de960ee2b..00000000000
--- a/src/tools/miri/tests/pass/vecdeque.tree_uniq.stdout
+++ /dev/null
@@ -1,2 +0,0 @@
-[2, 2] Iter([2, 2], [])
-Iter([], [])