diff --git a/compiler/rustc_infer/src/infer/error_reporting/mod.rs b/compiler/rustc_infer/src/infer/error_reporting/mod.rs
index d1d6cb43fc74c..fa3ee97293f22 100644
--- a/compiler/rustc_infer/src/infer/error_reporting/mod.rs
+++ b/compiler/rustc_infer/src/infer/error_reporting/mod.rs
@@ -1490,7 +1490,7 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
                             format!(
                                 "{}{}{} {}{}",
                                 if sp.is_desugaring(DesugaringKind::Async) {
-                                    "the `Output` of this `async fn`'s "
+                                    "checked the return type of this `async fn`, "
                                 } else if count == 1 {
                                     "the "
                                 } else {
diff --git a/src/test/ui/async-await/dont-suggest-missing-await.stderr b/src/test/ui/async-await/dont-suggest-missing-await.stderr
index 14e72c2b1e7e2..1cf1afb6d3646 100644
--- a/src/test/ui/async-await/dont-suggest-missing-await.stderr
+++ b/src/test/ui/async-await/dont-suggest-missing-await.stderr
@@ -2,7 +2,7 @@ error[E0308]: mismatched types
   --> $DIR/dont-suggest-missing-await.rs:14:18
    |
 LL | async fn make_u32() -> u32 {
-   |                        --- the `Output` of this `async fn`'s found opaque type
+   |                        --- checked the return type of this `async fn`, found opaque type
 ...
 LL |         take_u32(x)
    |                  ^ expected `u32`, found opaque type
diff --git a/src/test/ui/async-await/issue-61076.stderr b/src/test/ui/async-await/issue-61076.stderr
index db6dc3ea00a8d..d3eaeb7101a3b 100644
--- a/src/test/ui/async-await/issue-61076.stderr
+++ b/src/test/ui/async-await/issue-61076.stderr
@@ -61,7 +61,7 @@ error[E0308]: mismatched types
   --> $DIR/issue-61076.rs:92:9
    |
 LL | async fn tuple() -> Tuple {
-   |                     ----- the `Output` of this `async fn`'s expected opaque type
+   |                     ----- checked the return type of this `async fn`, expected opaque type
 ...
 LL |         Tuple(_) => {}
    |         ^^^^^^^^ expected opaque type, found struct `Tuple`
diff --git a/src/test/ui/async-await/suggest-missing-await-closure.stderr b/src/test/ui/async-await/suggest-missing-await-closure.stderr
index 2151057aa7fc0..93f5d2e224ce6 100644
--- a/src/test/ui/async-await/suggest-missing-await-closure.stderr
+++ b/src/test/ui/async-await/suggest-missing-await-closure.stderr
@@ -2,7 +2,7 @@ error[E0308]: mismatched types
   --> $DIR/suggest-missing-await-closure.rs:16:18
    |
 LL | async fn make_u32() -> u32 {
-   |                        --- the `Output` of this `async fn`'s found opaque type
+   |                        --- checked the return type of this `async fn`, found opaque type
 ...
 LL |         take_u32(x)
    |                  ^ expected `u32`, found opaque type
diff --git a/src/test/ui/async-await/suggest-missing-await.stderr b/src/test/ui/async-await/suggest-missing-await.stderr
index 46615dae7e2ba..1c6245265c818 100644
--- a/src/test/ui/async-await/suggest-missing-await.stderr
+++ b/src/test/ui/async-await/suggest-missing-await.stderr
@@ -2,7 +2,7 @@ error[E0308]: mismatched types
   --> $DIR/suggest-missing-await.rs:12:14
    |
 LL | async fn make_u32() -> u32 {
-   |                        --- the `Output` of this `async fn`'s found opaque type
+   |                        --- checked the return type of this `async fn`, found opaque type
 ...
 LL |     take_u32(x)
    |              ^ expected `u32`, found opaque type
@@ -18,7 +18,7 @@ error[E0308]: mismatched types
   --> $DIR/suggest-missing-await.rs:22:5
    |
 LL | async fn dummy() {}
-   |                  - the `Output` of this `async fn`'s found opaque type
+   |                  - checked the return type of this `async fn`, found opaque type
 ...
 LL |     dummy()
    |     ^^^^^^^ expected `()`, found opaque type
diff --git a/src/test/ui/parser/fn-header-semantic-fail.stderr b/src/test/ui/parser/fn-header-semantic-fail.stderr
index 2f11f95bf4a7f..a2806dce15e68 100644
--- a/src/test/ui/parser/fn-header-semantic-fail.stderr
+++ b/src/test/ui/parser/fn-header-semantic-fail.stderr
@@ -189,7 +189,7 @@ LL |         async fn ft1();
 LL |         async fn ft1() {}
    |                        ^
    |                        |
-   |                        the `Output` of this `async fn`'s found opaque type
+   |                        checked the return type of this `async fn`, found opaque type
    |                        expected `()`, found opaque type
    |
    = note: expected fn pointer `fn()`
@@ -204,7 +204,7 @@ LL |         const async unsafe extern "C" fn ft5();
 LL |         const async unsafe extern "C" fn ft5() {}
    |                                                ^
    |                                                |
-   |                                                the `Output` of this `async fn`'s found opaque type
+   |                                                checked the return type of this `async fn`, found opaque type
    |                                                expected `()`, found opaque type
    |
    = note: expected fn pointer `unsafe extern "C" fn()`
diff --git a/src/test/ui/resolve/issue-70736-async-fn-no-body-def-collector.stderr b/src/test/ui/resolve/issue-70736-async-fn-no-body-def-collector.stderr
index 9b59e41501102..447c4ee5095e8 100644
--- a/src/test/ui/resolve/issue-70736-async-fn-no-body-def-collector.stderr
+++ b/src/test/ui/resolve/issue-70736-async-fn-no-body-def-collector.stderr
@@ -53,7 +53,7 @@ LL |     async fn associated();
 LL |     async fn associated();
    |                          ^
    |                          |
-   |                          the `Output` of this `async fn`'s found opaque type
+   |                          checked the return type of this `async fn`, found opaque type
    |                          expected `()`, found opaque type
    |
    = note: expected fn pointer `fn()`
diff --git a/src/test/ui/suggestions/match-prev-arm-needing-semi.stderr b/src/test/ui/suggestions/match-prev-arm-needing-semi.stderr
index e9803a78f94b3..f6d0041157edc 100644
--- a/src/test/ui/suggestions/match-prev-arm-needing-semi.stderr
+++ b/src/test/ui/suggestions/match-prev-arm-needing-semi.stderr
@@ -2,7 +2,7 @@ error[E0308]: `match` arms have incompatible types
   --> $DIR/match-prev-arm-needing-semi.rs:26:18
    |
 LL |   async fn async_dummy() {}
-   |                          - the `Output` of this `async fn`'s found opaque type
+   |                          - checked the return type of this `async fn`, found opaque type
 ...
 LL |       let _ = match true {
    |  _____________-
@@ -36,7 +36,7 @@ error[E0308]: `match` arms have incompatible types
   --> $DIR/match-prev-arm-needing-semi.rs:39:18
    |
 LL |   async fn async_dummy2() {}
-   |                           - the `Output` of this `async fn`'s found opaque type
+   |                           - checked the return type of this `async fn`, found opaque type
 ...
 LL |       let _ = match true {
    |  _____________-
@@ -70,7 +70,7 @@ error[E0308]: `match` arms have incompatible types
   --> $DIR/match-prev-arm-needing-semi.rs:50:18
    |
 LL |   async fn async_dummy2() {}
-   |                           - the `Output` of this `async fn`'s found opaque type
+   |                           - checked the return type of this `async fn`, found opaque type
 ...
 LL |       let _ = match true {
    |  _____________-