1 files changed, 74 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/redundant_async_block.stderr b/src/tools/clippy/tests/ui/redundant_async_block.stderr
new file mode 100644
index 000000000..f3dcb09b4
--- /dev/null
+++ b/src/tools/clippy/tests/ui/redundant_async_block.stderr
@@ -0,0 +1,74 @@
+error: this async expression only awaits a single future
+  --> $DIR/redundant_async_block.rs:15:13
+   |
+LL |     let x = async { f.await };
+   |             ^^^^^^^^^^^^^^^^^ help: you can reduce it to: `f`
+   |
+   = note: `-D clippy::redundant-async-block` implied by `-D warnings`
+
+error: this async expression only awaits a single future
+  --> $DIR/redundant_async_block.rs:22:16
+   |
+LL |     let fut2 = async { fut1.await };
+   |                ^^^^^^^^^^^^^^^^^^^^ help: you can reduce it to: `fut1`
+
+error: this async expression only awaits a single future
+  --> $DIR/redundant_async_block.rs:26:16
+   |
+LL |     let fut2 = async move { fut1.await };
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can reduce it to: `fut1`
+
+error: this async expression only awaits a single future
+  --> $DIR/redundant_async_block.rs:29:15
+   |
+LL |     let fut = async { async { 42 }.await };
+   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can reduce it to: `async { 42 }`
+
+error: this async expression only awaits a single future
+  --> $DIR/redundant_async_block.rs:45:5
+   |
+LL |     async move { fut.await }
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^ help: you can reduce it to: `fut`
+
+error: this async expression only awaits a single future
+  --> $DIR/redundant_async_block.rs:58:5
+   |
+LL |     async move { fut.await }
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^ help: you can reduce it to: `fut`
+
+error: this async expression only awaits a single future
+  --> $DIR/redundant_async_block.rs:63:5
+   |
+LL |     async { f.await }
+   |     ^^^^^^^^^^^^^^^^^ help: you can reduce it to: `f`
+
+error: this async expression only awaits a single future
+  --> $DIR/redundant_async_block.rs:86:5
+   |
+LL |     async { async { f().await + 1 }.await }
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can reduce it to: `async { f().await + 1 }`
+
+error: this async expression only awaits a single future
+  --> $DIR/redundant_async_block.rs:149:13
+   |
+LL |             async { async { 42 }.await }
+   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can reduce it to: `async { 42 }`
+...
+LL |     mac!()
+   |     ------ in this macro invocation
+   |
+   = note: this error originates in the macro `mac` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: this async expression only awaits a single future
+  --> $DIR/redundant_async_block.rs:169:13
+   |
+LL |             async { async { $e }.await }
+   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can reduce it to: `async { $e }`
+...
+LL |     mac!(42)
+   |     -------- in this macro invocation
+   |
+   = note: this error originates in the macro `mac` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 10 previous errors
+