Update ui test files

tests/ui/bad-field-attr.stderr

@@ -1,5 +1,5 @@
 error: #[error(transparent)] needs to go outside the enum or struct, not on an individual field
- --> $DIR/bad-field-attr.rs:5:18
+ --> $DIR/tests/ui/bad-field-attr.rs:5:18
   |
 5 | pub struct Error(#[error(transparent)] std::io::Error);
   |                  ^^^^^^^^^^^^^^^^^^^^^

tests/ui/concat-display.stderr

@@ -1,5 +1,5 @@
 error: expected string literal
-  --> $DIR/concat-display.rs:8:17
+  --> $DIR/tests/ui/concat-display.rs:8:17
    |
 8  |         #[error(concat!("invalid ", $what))]
    |                 ^^^^^^

tests/ui/duplicate-enum-source.stderr

@@ -1,5 +1,5 @@
 error: duplicate #[source] attribute
- --> $DIR/duplicate-enum-source.rs:8:9
+ --> $DIR/tests/ui/duplicate-enum-source.rs:8:9
   |
 8 |         #[source]
   |         ^^^^^^^^^

tests/ui/duplicate-fmt.stderr

@@ -1,5 +1,5 @@
 error: only one #[error(...)] attribute is allowed
- --> $DIR/duplicate-fmt.rs:5:1
+ --> $DIR/tests/ui/duplicate-fmt.rs:5:1
   |
 5 | #[error("...")]
   | ^^^^^^^^^^^^^^^

tests/ui/duplicate-struct-source.stderr

@@ -1,5 +1,5 @@
 error: duplicate #[source] attribute
- --> $DIR/duplicate-struct-source.rs:7:5
+ --> $DIR/tests/ui/duplicate-struct-source.rs:7:5
   |
 7 |     #[source]
   |     ^^^^^^^^^

tests/ui/duplicate-transparent.stderr

@@ -1,5 +1,5 @@
 error: duplicate #[error(transparent)] attribute
- --> $DIR/duplicate-transparent.rs:5:1
+ --> $DIR/tests/ui/duplicate-transparent.rs:5:1
   |
 5 | #[error(transparent)]
   | ^^^^^^^^^^^^^^^^^^^^^

tests/ui/from-not-source.stderr

@@ -1,5 +1,5 @@
 error: #[from] is only supported on the source field, not any other field
- --> $DIR/from-not-source.rs:7:5
+ --> $DIR/tests/ui/from-not-source.rs:7:5
   |
 7 |     #[from]
   |     ^^^^^^^

tests/ui/lifetime.stderr

@@ -1,11 +1,11 @@
 error: non-static lifetimes are not allowed in the source of an error, because std::error::Error requires the source is dyn Error + 'static
- --> $DIR/lifetime.rs:6:26
+ --> $DIR/tests/ui/lifetime.rs:6:26
   |
 6 | struct Error<'a>(#[from] Inner<'a>);
   |                          ^^^^^^^^^
 
 error: non-static lifetimes are not allowed in the source of an error, because std::error::Error requires the source is dyn Error + 'static
-  --> $DIR/lifetime.rs:15:17
+  --> $DIR/tests/ui/lifetime.rs:15:17
    |
 15 |     Foo(#[from] Generic<&'a str>),
    |                 ^^^^^^^^^^^^^^^^

tests/ui/missing-fmt.stderr

@@ -1,5 +1,5 @@
 error: missing #[error("...")] display attribute
- --> $DIR/missing-fmt.rs:7:5
+ --> $DIR/tests/ui/missing-fmt.rs:7:5
   |
 7 |     B(usize),
   |     ^^^^^^^^

tests/ui/transparent-display.stderr

@@ -1,5 +1,5 @@
 error: cannot have both #[error(transparent)] and a display attribute
- --> $DIR/transparent-display.rs:5:1
+ --> $DIR/tests/ui/transparent-display.rs:5:1
   |
 5 | #[error("...")]
   | ^^^^^^^^^^^^^^^

tests/ui/transparent-enum-many.stderr

@@ -1,5 +1,5 @@
 error: #[error(transparent)] requires exactly one field
- --> $DIR/transparent-enum-many.rs:5:5
+ --> $DIR/tests/ui/transparent-enum-many.rs:5:5
   |
 5 | /     #[error(transparent)]
 6 | |     Other(anyhow::Error, String),

tests/ui/transparent-enum-source.stderr

@@ -1,5 +1,5 @@
 error: transparent variant can't contain #[source]
- --> $DIR/transparent-enum-source.rs:6:11
+ --> $DIR/tests/ui/transparent-enum-source.rs:6:11
   |
 6 |     Other(#[source] anyhow::Error),
   |           ^^^^^^^^^

tests/ui/transparent-struct-many.stderr

@@ -1,5 +1,5 @@
 error: #[error(transparent)] requires exactly one field
- --> $DIR/transparent-struct-many.rs:4:1
+ --> $DIR/tests/ui/transparent-struct-many.rs:4:1
   |
 4 | #[error(transparent)]
   | ^^^^^^^^^^^^^^^^^^^^^

tests/ui/transparent-struct-source.stderr

@@ -1,5 +1,5 @@
 error: transparent error struct can't contain #[source]
- --> $DIR/transparent-struct-source.rs:5:18
+ --> $DIR/tests/ui/transparent-struct-source.rs:5:18
   |
 5 | pub struct Error(#[source] anyhow::Error);
   |                  ^^^^^^^^^

tests/ui/unexpected-field-fmt.stderr

@@ -1,5 +1,5 @@
 error: not expected here; the #[error(...)] attribute belongs on top of a struct or an enum variant
- --> $DIR/unexpected-field-fmt.rs:6:9
+ --> $DIR/tests/ui/unexpected-field-fmt.rs:6:9
   |
 6 |         #[error("...")]
   |         ^^^^^^^^^^^^^^^

tests/ui/unexpected-struct-source.stderr

@@ -1,5 +1,5 @@
 error: not expected here; the #[source] attribute belongs on a specific field
- --> $DIR/unexpected-struct-source.rs:4:1
+ --> $DIR/tests/ui/unexpected-struct-source.rs:4:1
   |
 4 | #[source]
   | ^^^^^^^^^

tests/ui/union.stderr

@@ -1,5 +1,5 @@
 error: union as errors are not supported
- --> $DIR/union.rs:4:1
+ --> $DIR/tests/ui/union.rs:4:1
   |
 4 | / pub union U {
 5 | |     msg: &'static str,