Do not set up wrong span for adjustments

Author: compiler-errors

tests/fail/box-cell-alias.stderr

@@ -2,7 +2,7 @@ error: Undefined Behavior: trying to retag from <TAG> for SharedReadWrite permis
   --> $DIR/box-cell-alias.rs:LL:CC
    |
 LL |     unsafe { (*ptr).set(20) };
-   |              ^^^^^^^^^^^^^^
+   |              ^^^^^^
    |              |
    |              trying to retag from <TAG> for SharedReadWrite permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
    |              this error occurs as part of retag at ALLOC[0x0..0x1]

tests/fail/stacked_borrows/illegal_read7.stderr

@@ -2,7 +2,7 @@ error: Undefined Behavior: trying to retag from <TAG> for SharedReadWrite permis
   --> $DIR/illegal_read7.rs:LL:CC
    |
 LL |         let _val = *x.get_mut();
-   |                     ^^^^^^^^^^^
+   |                     ^
    |                     |
    |                     trying to retag from <TAG> for SharedReadWrite permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
    |                     this error occurs as part of two-phase retag at ALLOC[0x0..0x4]

tests/fail/stacked_borrows/interior_mut1.stderr

@@ -2,7 +2,7 @@ error: Undefined Behavior: trying to retag from <TAG> for SharedReadWrite permis
   --> $DIR/interior_mut1.rs:LL:CC
    |
 LL |         let _val = *inner_shr.get();
-   |                     ^^^^^^^^^^^^^^^
+   |                     ^^^^^^^^^
    |                     |
    |                     trying to retag from <TAG> for SharedReadWrite permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
    |                     this error occurs as part of retag at ALLOC[0x0..0x4]

tests/fail/stacked_borrows/interior_mut2.stderr

@@ -2,7 +2,7 @@ error: Undefined Behavior: trying to retag from <TAG> for SharedReadWrite permis
   --> $DIR/interior_mut2.rs:LL:CC
    |
 LL |         let _val = *inner_shr.get();
-   |                     ^^^^^^^^^^^^^^^
+   |                     ^^^^^^^^^
    |                     |
    |                     trying to retag from <TAG> for SharedReadWrite permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
    |                     this error occurs as part of retag at ALLOC[0x0..0x4]

tests/fail/stacked_borrows/shared_rw_borrows_are_weak1.stderr

@@ -2,7 +2,7 @@ error: Undefined Behavior: trying to retag from <TAG> for SharedReadWrite permis
   --> $DIR/shared_rw_borrows_are_weak1.rs:LL:CC
    |
 LL |         y.get_mut();
-   |         ^^^^^^^^^^^
+   |         ^
    |         |
    |         trying to retag from <TAG> for SharedReadWrite permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
    |         this error occurs as part of two-phase retag at ALLOC[0x0..0x4]

tests/fail/tree_borrows/fnentry_invalidation.stderr

@@ -21,7 +21,7 @@ help: the accessed tag <TAG> later transitioned to Frozen due to a reborrow (act
   --> $DIR/fnentry_invalidation.rs:LL:CC
    |
 LL |     x.do_bad();
-   |     ^^^^^^^^^^
+   |     ^
    = help: this transition corresponds to a loss of write permissions
    = note: BACKTRACE (of the first span):
    = note: inside `main` at $DIR/fnentry_invalidation.rs:LL:CC

tests/fail/tree_borrows/write-during-2phase.stderr

@@ -9,15 +9,8 @@ LL |     fn add(&mut self, n: u64) -> u64 {
 help: the accessed tag <TAG> was created here, in the initial state Reserved
   --> $DIR/write-during-2phase.rs:LL:CC
    |
-LL |       let _res = f.add(unsafe {
-   |  ________________^
-LL | |         let n = f.0;
-LL | |         // This is the access at fault, but it's not immediately apparent because
-LL | |         // the reference that got invalidated is not under a Protector.
-LL | |         *inner = 42;
-LL | |         n
-LL | |     });
-   | |______^
+LL |     let _res = f.add(unsafe {
+   |                ^
 help: the accessed tag <TAG> later transitioned to Disabled due to a foreign write access at offsets [0x0..0x8]
   --> $DIR/write-during-2phase.rs:LL:CC
    |