Auto merge of #106458 - albertlarsan68:move-tests, r=jyn514

Move src/test to the root

See MCP at rust-lang/compiler-team#573

There may be more changes needed.

The first commit is just the move of the files:
You can check that the first commit did not do anything else than renames by running
```
git diff --diff-filter=r -M100% <rust-lang remote>/master <first commit hash>
```
The output should be empty, because the filter excludes renames, and the match threshold for qualifying a rename is 100%.

The second one is mostly a "find and replace" of `src/test` to `tests` and whatever is needed to make CI pass.

What is left to do:
---

- [x] Move directory
- [ ] Change references to `src/test`
    - [x] Change references in-tree
    - [ ] Change references in submodules / out-of-tree docs
- [x] Make CI pass:
    - [x] Fix tidy
    - [x] Fix tests
    - [x] Bless tests if needed (shouldn't normally)
- [ ] Merge it !

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/ui/async-await/issues/non-async-enclosing-span.rs b/tests/ui/async-await/issues/non-async-enclosing-span.rs
new file mode 100644
index 00000000000..d47c2137725
--- /dev/null
+++ b/tests/ui/async-await/issues/non-async-enclosing-span.rs
@@ -0,0 +1,11 @@
+// edition:2018
+
+async fn do_the_thing() -> u8 {
+    8
+}
+// #63398: point at the enclosing scope and not the previously seen closure
+fn main() {  //~ NOTE this is not `async`
+    let x = move || {};
+    let y = do_the_thing().await; //~ ERROR `await` is only allowed inside `async` functions
+    //~^ NOTE only allowed inside `async` functions and blocks
+}