diff --git a/tests/compile_fail/into/tuple_no_parens.stderr b/tests/compile_fail/into/tuple_no_parens.stderr
index 4b079463..9be31ca3 100644
--- a/tests/compile_fail/into/tuple_no_parens.stderr
+++ b/tests/compile_fail/into/tuple_no_parens.stderr
@@ -1,4 +1,4 @@
-error: Expected tuple: `(i16, _)`
+error: expected tuple: `(i16, _)`
  --> tests/compile_fail/into/tuple_no_parens.rs:2:8
   |
 2 | #[into(i16, i16)]
diff --git a/tests/compile_fail/into/tuple_too_long.stderr b/tests/compile_fail/into/tuple_too_long.stderr
index a4d72ee6..57033a5e 100644
--- a/tests/compile_fail/into/tuple_too_long.stderr
+++ b/tests/compile_fail/into/tuple_too_long.stderr
@@ -1,4 +1,4 @@
-error: Wrong tuple length: expected 2, found 3. Consider removing last 1 type: `(i16, i16)`
+error: wrong tuple length: expected 2, found 3. Consider removing last 1 type: `(i16, i16)`
  --> tests/compile_fail/into/tuple_too_long.rs:2:8
   |
 2 | #[into((i16, i16, i16))]
diff --git a/tests/compile_fail/into/tuple_too_short.stderr b/tests/compile_fail/into/tuple_too_short.stderr
index a60529cc..0e685453 100644
--- a/tests/compile_fail/into/tuple_too_short.stderr
+++ b/tests/compile_fail/into/tuple_too_short.stderr
@@ -1,4 +1,4 @@
-error: Wrong tuple length: expected 2, found 1. Consider adding 1 more type: `(i16, _)`
+error: wrong tuple length: expected 2, found 1. Consider adding 1 more type: `(i16, _)`
  --> tests/compile_fail/into/tuple_too_short.rs:2:8
   |
 2 | #[into((i16,))]
diff --git a/tests/into.rs b/tests/into.rs
index 063a5a6f..95799d2f 100644
--- a/tests/into.rs
+++ b/tests/into.rs
@@ -11,16 +11,18 @@ use alloc::{
     boxed::Box,
     string::{String, ToString},
 };
+use core::mem;
 #[cfg(feature = "std")]
 use std::borrow::Cow;
 
 use derive_more::Into;
 use static_assertions::assert_not_impl_any;
 
-/// [`mem::transmute()`] that works in generic contexts.
+/// Nasty [`mem::transmute()`] that works in generic contexts
+/// by [`mem::forget`]ing stuff.
+///
+/// It's OK for tests!
 unsafe fn transmute<From, To>(from: From) -> To {
-    use core::mem;
-
     let to = unsafe { mem::transmute_copy(&from) };
     mem::forget(from);
     to