Prefer #![feature(bind_by_move_pattern_guards)] over -Z disable_ast_check_for_mutation_in_guard

src/test/run-pass/issues/issue-24535-allow-mutable-borrow-in-match-guard.rs

@@ -12,12 +12,11 @@
 // This test illustrates that under NLL, we can remove our overly
 // conservative approach for disallowing mutations of match inputs.
 
-// See further discussion on rust-lang/rust#24535 and
-// rust-lang/rfcs#1006.
-
-// compile-flags: -Z disable-ast-check-for-mutation-in-guard
+// See further discussion on rust-lang/rust#24535,
+// rust-lang/rfcs#1006, and rust-lang/rfcs#107
 
 #![feature(nll)]
+#![feature(bind_by_move_pattern_guards)]
 
 fn main() {
     rust_issue_24535();

src/test/ui/issues/issue-27282-reborrow-ref-mut-in-guard.rs

@@ -15,8 +15,8 @@
 // reject it. But I want to make sure that we continue to reject it
 // (under NLL) even when that conservaive check goes away.
 
-// compile-flags: -Z disable-ast-check-for-mutation-in-guard
 
+#![feature(bind_by_move_pattern_guards)]
 #![feature(nll)]
 
 fn main() {

src/test/ui/nll/match-guards-partially-borrow.rs

@@ -5,8 +5,8 @@
 // Test that we don't allow mutating the value being matched on in a way that
 // changes which patterns it matches, until we have chosen an arm.
 
-// compile-flags: -Zdisable-ast-check-for-mutation-in-guard
 
+#![feature(bind_by_move_pattern_guards)]
 #![feature(nll)]
 
 fn ok_mutation_in_guard(mut q: i32) {