Slice pattern incorrectly report double borrow

[Popog]

Seems you can work around issue by throwing enough &mut/& and * at the problem.

let mut v: [i32;2] = [1; 2];

let [ref mut _a, ref mut _b] = v; // Double borrow error
let [ref mut _a, ref mut _b] = *&mut v;
let &mut [ref mut _a, ref mut _b] = &mut v;

let rv = &mut v;
let &mut [ref mut _a, ref mut _b] = rv; // Double borrow error
let &mut [ref mut _a, ref mut _b] = &mut* rv;

let [ref mut _a, ref mut _b] = *rv; // Double borrow error
let [ref mut _a, ref mut _b] = *&mut *rv;

Value case has a similar issue that might be related (haven't found a workaround yet):

struct NoCopy;
let v: [NoCopy;2] = [NoCopy, NoCopy];
let [_a, _b] = v; // Value used after move

[memoryruins]

Triage: now compiles and runs on 2018 edition. 2015 errors.
rustc: 1.32.0

[matthewjasper]

Closing as this is now fixed on both editions