Bring in new test cases from 2018-08-18
diff --git a/tests/common/mod.rs b/tests/common/mod.rs
index 8193fe5..6a95500 100644
--- a/tests/common/mod.rs
+++ b/tests/common/mod.rs
@@ -73,12 +73,23 @@
     }
 
     match path_string.as_ref() {
+        // Existential type
+        "tests/rust/src/test/run-pass/existential_type.rs" |
+        "tests/rust/src/test/ui/existential_types/bound_reduction.rs" |
+        "tests/rust/src/test/ui/existential_types/different_defining_uses_never_type2.rs" |
+        "tests/rust/src/test/ui/existential_types/existential-associated-type.rs" |
+        "tests/rust/src/test/ui/existential_types/generic_lifetime_param.rs" |
+        "tests/rust/src/test/ui/impl-trait/associated-existential-type-generic-trait.rs" |
+        "tests/rust/src/test/ui/impl-trait/associated-existential-type-trivial.rs" |
+        "tests/rust/src/test/ui/impl-trait/associated-existential-type.rs" |
+        "tests/rust/src/test/ui/impl-trait/existential_type_in_fn_body.rs" |
         // Deprecated placement syntax
         "tests/rust/src/test/run-pass/new-box-syntax.rs" |
         "tests/rust/src/test/ui/obsolete-in-place/bad.rs" |
         // not actually test cases
         "tests/rust/src/test/run-pass/auxiliary/macro-comma-support.rs" |
-        "tests/rust/src/test/run-pass/auxiliary/macro-include-items-expr.rs" => false,
+        "tests/rust/src/test/run-pass/auxiliary/macro-include-items-expr.rs" |
+        "tests/rust/src/test/ui/issues/auxiliary/issue-21146-inc.rs" => false,
         _ => true,
     }
 }