Add ICE #67019

It's a bit hacky because the ICE from rust-lang/rust#67019 needs compiler flags and I don't know of a way to provide that from within a .rs file.

ices/67019.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+mkdir temp 
+cd temp
+cat > temp.rs << EOF
+
+fn test(this: ((u8, u8),)) {
+    assert!((this.0).1 == 0);
+}
+fn main() {
+    test(((1, 2),));
+}
+
+EOF
+
+rustc --edition 2018 temp.rs -Z mir-opt-level=2