make test not leak rustc crate hash

src/tools/miri/tests/panic/mir-validation.rs

@@ -3,6 +3,7 @@
 //@normalize-stderr-test: "\n +at [^\n]+" -> ""
 //@normalize-stderr-test: "\n +\[\.\.\. omitted [0-9]+ frames? \.\.\.\]" -> ""
 //@normalize-stderr-test: "\n[ =]*note:.*" -> ""
+//@normalize-stderr-test: "DefId\([^()]*\)" -> "DefId"
 #![feature(custom_mir, core_intrinsics)]
 use core::intrinsics::mir::*;
 

src/tools/miri/tests/panic/mir-validation.stderr

@@ -1,5 +1,5 @@
 thread 'rustc' panicked at compiler/rustc_const_eval/src/transform/validate.rs:LL:CC:
-broken MIR in Item(DefId(0:4 ~ mir_validation[fad2]::main)) (after phase change to runtime-optimized) at bb0[1]:
+broken MIR in Item(DefId) (after phase change to runtime-optimized) at bb0[1]:
 (*(_2.0: *mut i32)), has deref at the wrong place
 stack backtrace: