Rollup merge of #104315 - SparkyPotato:fix-104276, r=cjgillot

Improve spans with `use crate::{self}`

Fixes #104276.

The error becomes:
```
error: crate root imports need to be explicitly named: `use crate as name;`
 --> src/lib.rs.rs:1:13
  |
1 | use crate::{self};
  |             ^^^^

warning: unused import: `self`
 --> src/lib.rs:1:13
  |
1 | use crate::{self};
  |             ^^^^
  |
  = note: `#[warn(unused_imports)]` on by default
```

2 files changed, 12 insertions, 0 deletions

diff --git a/src/test/ui/use/use-crate-self.rs b/src/test/ui/use/use-crate-self.rs
new file mode 100644
index 00000000000..65ab948147c
--- /dev/null
+++ b/src/test/ui/use/use-crate-self.rs
@@ -0,0 +1,4 @@
+use crate::{self};
+        //~^ ERROR crate root imports need to be explicitly named: `use crate as name;`
+
+fn main() {}
diff --git a/src/test/ui/use/use-crate-self.stderr b/src/test/ui/use/use-crate-self.stderr
new file mode 100644
index 00000000000..dd4036bfff4
--- /dev/null
+++ b/src/test/ui/use/use-crate-self.stderr
@@ -0,0 +1,8 @@
+error: crate root imports need to be explicitly named: `use crate as name;`
+  --> $DIR/use-crate-self.rs:1:13
+   |
+LL | use crate::{self};
+   |             ^^^^
+
+error: aborting due to previous error
+