Fix tests

Author: antoyo

failing-ui-tests.txt

@@ -65,3 +65,4 @@ tests/ui/alloc-error/default-alloc-error-hook.rs
 tests/ui/generator/panic-safe.rs
 tests/ui/issues/issue-14875.rs
 tests/ui/issues/issue-29948.rs
+tests/ui/panic-while-printing.rs

failing-ui-tests12.txt

@@ -37,4 +37,3 @@ tests/ui/simd/intrinsic/generic-gather-pass.rs
 tests/ui/simd/issue-85915-simd-ptrs.rs
 tests/ui/issues/issue-68010-large-zst-consts.rs
 tests/ui/rust-2018/proc-macro-crate-in-paths.rs
-tests/ui/panic-while-printing.rs