Fix test output.

Author: m-ou-se

src/tools/miri/tests/fail/panic/thread_local_const_drop_panic.stderr

@@ -1,4 +1,5 @@
-thread $NAME panicked at 'ow', $DIR/thread_local_const_drop_panic.rs:LL:CC
+thread $NAME panicked at $DIR/thread_local_const_drop_panic.rs:LL:CC:
+ow
 fatal runtime error: thread local panicked on drop
 error: abnormal termination: the program aborted execution
 

src/tools/miri/tests/fail/panic/thread_local_drop_panic.stderr

@@ -1,4 +1,5 @@
-thread $NAME panicked at 'ow', $DIR/thread_local_drop_panic.rs:LL:CC
+thread $NAME panicked at $DIR/thread_local_drop_panic.rs:LL:CC:
+ow
 fatal runtime error: thread local panicked on drop
 error: abnormal termination: the program aborted execution
 

tests/rustdoc-ui/ice-bug-report-url.rs

@@ -6,7 +6,7 @@
 
 // normalize-stderr-test "note: compiler flags.*\n\n" -> ""
 // normalize-stderr-test "note: rustc.*running on.*" -> "note: rustc {version} running on {platform}"
-// normalize-stderr-test "thread.*panicked at .*, compiler.*" -> "thread panicked at 'aborting due to `-Z treat-err-as-bug`'"
+// normalize-stderr-test "thread.*panicked at compiler.*" -> ""
 // normalize-stderr-test " +\d{1,}: .*\n" -> ""
 // normalize-stderr-test " + at .*\n" -> ""
 // normalize-stderr-test ".*note: Some details are omitted.*\n" -> ""

tests/rustdoc-ui/ice-bug-report-url.stderr

@@ -4,7 +4,7 @@ error: expected one of `->`, `where`, or `{`, found `<eof>`
 LL | fn wrong()
    |          ^ expected one of `->`, `where`, or `{`
 
-thread 'rustc' panicked at compiler/rustc_errors/src/lib.rs:1711:30:
+
 aborting due to `-Z treat-err-as-bug=1`
 stack backtrace: