bless fulldeps tests

Author: oli-obk

src/test/ui-fulldeps/session-diagnostic/diagnostic-derive.stderr

@@ -660,9 +660,7 @@ LL | #[derive(Diagnostic)]
    = help: normalized in stderr
 note: required by a bound in `DiagnosticBuilder::<'a, G>::set_arg`
   --> $COMPILER_DIR/rustc_errors/src/diagnostic_builder.rs:LL:CC
-   |
-   = note: required by this bound in `DiagnosticBuilder::<'a, G>::set_arg`
-   = note: this error originates in the derive macro `Diagnostic` (in Nightly builds, run with -Z macro-backtrace for more info)
+   = note: this error originates in the derive macro `Diagnostic` which comes from the expansion of the macro `forward` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: aborting due to 83 previous errors