Bless/update tests.

Author: m-ou-se

tests/ui/borrowck/borrowck-and-init.stderr

@@ -8,6 +8,8 @@ LL |     println!("{}", false && { i = 5; true });
    |                               ----- binding initialized here in some conditions
 LL |     println!("{}", i);
    |                    ^ `i` used here but it is possibly-uninitialized
+   |
+   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: aborting due to 1 previous error
 

tests/ui/borrowck/borrowck-break-uninit-2.stderr

@@ -7,6 +7,7 @@ LL |     let x: isize;
 LL |     println!("{}", x);
    |                    ^ `x` used here but it isn't initialized
    |
+   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 help: consider assigning a value
    |
 LL |     let x: isize = 42;

tests/ui/borrowck/borrowck-break-uninit.stderr

@@ -7,6 +7,7 @@ LL |     let x: isize;
 LL |     println!("{}", x);
    |                    ^ `x` used here but it isn't initialized
    |
+   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 help: consider assigning a value
    |
 LL |     let x: isize = 42;

tests/ui/borrowck/borrowck-or-init.stderr

@@ -8,6 +8,8 @@ LL |     println!("{}", false || { i = 5; true });
    |                               ----- binding initialized here in some conditions
 LL |     println!("{}", i);
    |                    ^ `i` used here but it is possibly-uninitialized
+   |
+   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: aborting due to 1 previous error
 

tests/ui/borrowck/borrowck-while-break.stderr

@@ -8,6 +8,8 @@ LL |     while cond {
 ...
 LL |     println!("{}", v);
    |                    ^ `v` used here but it is possibly-uninitialized
+   |
+   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: aborting due to 1 previous error
 

tests/ui/borrowck/clone-on-ref.stderr

@@ -30,7 +30,7 @@ LL |     drop(x);
    |          ^ move out of `x` occurs here
 LL |
 LL |     println!("{b}");
-   |               --- borrow later used here
+   |                - borrow later used here
    |
 help: if `T` implemented `Clone`, you could clone the value
   --> $DIR/clone-on-ref.rs:11:8
@@ -57,7 +57,7 @@ LL |     drop(x);
    |          ^ move out of `x` occurs here
 LL |
 LL |     println!("{b:?}");
-   |               ----- borrow later used here
+   |                - borrow later used here
    |
 note: if `A` implemented `Clone`, you could clone the value
   --> $DIR/clone-on-ref.rs:19:1

tests/ui/borrowck/issue-24267-flow-exit.stderr

@@ -7,6 +7,7 @@ LL |     loop { x = break; }
 LL |     println!("{}", x);
    |                    ^ `x` used here but it isn't initialized
    |
+   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 help: consider assigning a value
    |
 LL |     let x: i32 = 42;
@@ -21,6 +22,7 @@ LL |     for _ in 0..10 { x = continue; }
 LL |     println!("{}", x);
    |                    ^ `x` used here but it isn't initialized
    |
+   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 help: consider assigning a value
    |
 LL |     let x: i32 = 42;

tests/ui/borrowck/issue-47646.stderr

@@ -12,6 +12,8 @@ LL |             println!("{:?}", heap);
 ...
 LL |     };
    |      - ... and the mutable borrow might be used here, when that temporary is dropped and runs the destructor for type `(Option<std::collections::binary_heap::PeekMut<'_, i32>>, ())`
+   |
+   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: aborting due to 1 previous error