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, 47 deletions

diff --git a/src/test/ui/fmt/format-args-capture-missing-variables.stderr b/src/test/ui/fmt/format-args-capture-missing-variables.stderr
deleted file mode 100644
index d980e7be273..00000000000
--- a/src/test/ui/fmt/format-args-capture-missing-variables.stderr
+++ /dev/null
@@ -1,47 +0,0 @@
-error: named argument never used
-  --> $DIR/format-args-capture-missing-variables.rs:8:51
-   |
-LL |     format!("{valuea} {valueb}", valuea=5, valuec=7);
-   |             -------------------                   ^ named argument never used
-   |             |
-   |             formatting specifier missing
-
-error[E0425]: cannot find value `foo` in this scope
-  --> $DIR/format-args-capture-missing-variables.rs:2:18
-   |
-LL |     format!("{} {foo} {} {bar} {}", 1, 2, 3);
-   |                  ^^^ not found in this scope
-
-error[E0425]: cannot find value `bar` in this scope
-  --> $DIR/format-args-capture-missing-variables.rs:2:27
-   |
-LL |     format!("{} {foo} {} {bar} {}", 1, 2, 3);
-   |                           ^^^ not found in this scope
-
-error[E0425]: cannot find value `foo` in this scope
-  --> $DIR/format-args-capture-missing-variables.rs:6:15
-   |
-LL |     format!("{foo}");
-   |               ^^^ not found in this scope
-
-error[E0425]: cannot find value `valueb` in this scope
-  --> $DIR/format-args-capture-missing-variables.rs:8:24
-   |
-LL |     format!("{valuea} {valueb}", valuea=5, valuec=7);
-   |                        ^^^^^^ not found in this scope
-
-error[E0425]: cannot find value `foo` in this scope
-  --> $DIR/format-args-capture-missing-variables.rs:14:10
-   |
-LL |         {foo}
-   |          ^^^ not found in this scope
-
-error[E0425]: cannot find value `foo` in this scope
-  --> $DIR/format-args-capture-missing-variables.rs:19:14
-   |
-LL |     panic!("{foo} {bar}", bar=1);
-   |              ^^^ not found in this scope
-
-error: aborting due to 7 previous errors
-
-For more information about this error, try `rustc --explain E0425`.