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, 0 insertions, 27 deletions

diff --git a/src/test/ui/traits/impl-of-supertrait-has-wrong-lifetime-parameters.stderr b/src/test/ui/traits/impl-of-supertrait-has-wrong-lifetime-parameters.stderr
deleted file mode 100644
index 5572c6515ff..00000000000
--- a/src/test/ui/traits/impl-of-supertrait-has-wrong-lifetime-parameters.stderr
+++ /dev/null
@@ -1,27 +0,0 @@
-error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'b` due to conflicting requirements
-  --> $DIR/impl-of-supertrait-has-wrong-lifetime-parameters.rs:24:13
-   |
-LL | impl<'a,'b> T2<'a, 'b> for S<'a, 'b> {
-   |             ^^^^^^^^^^
-   |
-note: first, the lifetime cannot outlive the lifetime `'a` as defined here...
-  --> $DIR/impl-of-supertrait-has-wrong-lifetime-parameters.rs:24:6
-   |
-LL | impl<'a,'b> T2<'a, 'b> for S<'a, 'b> {
-   |      ^^
-note: ...but the lifetime must also be valid for the lifetime `'b` as defined here...
-  --> $DIR/impl-of-supertrait-has-wrong-lifetime-parameters.rs:24:9
-   |
-LL | impl<'a,'b> T2<'a, 'b> for S<'a, 'b> {
-   |         ^^
-note: ...so that the types are compatible
-  --> $DIR/impl-of-supertrait-has-wrong-lifetime-parameters.rs:24:13
-   |
-LL | impl<'a,'b> T2<'a, 'b> for S<'a, 'b> {
-   |             ^^^^^^^^^^
-   = note: expected `T1<'a>`
-              found `T1<'_>`
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0495`.