Avoid follow-up errors and ICEs after missing lifetime errors on data structures

Author: oli-obk

.gitignore

@@ -50,6 +50,7 @@ build/
 /target
 /src/bootstrap/target
 /src/tools/x/target
+/inc-fat/
 # Created by default with `src/ci/docker/run.sh`
 /obj/
 /rustc-ice*

compiler/rustc_infer/src/infer/mod.rs

@@ -1264,6 +1264,9 @@ impl<'tcx> InferCtxt<'tcx> {
     where
         T: TypeFoldable<TyCtxt<'tcx>>,
     {
+        if let Err(guar) = value.error_reported() {
+            self.set_tainted_by_errors(guar);
+        }
         if !value.has_non_region_infer() {
             return value;
         }