Rustup to rust-lang/rust#64874

[flip1995]

TODO:

• replace rvalue_promotable_map in [1]
• fix [2] according to this comment Simplify ExprUseVisitor rust#64874 (comment) this should be merged with consume, but I didn't figure out how to merge them, yet.
• fix [3]; What to do with LoanCause?

[2]+[3] probably have to be resolved by a rewrite of the lint. #4628 (comment)

[1]

rust-clippy/clippy_lints/src/methods/mod.rs

Lines 1292 to 1299 in 54bf4ff

	let promotable = self
	.cx
	.tcx
	.rvalue_promotable_map(owner_def)
	.contains(&expr.hir_id.local_id);
	if !promotable {
	self.found |= true;
	}

[2]

rust-clippy/clippy_lints/src/escape.rs

Line 126 in 54bf4ff

fn consume_pat(&mut self, consume_pat: &Pat, cmt: &cmt_<'tcx>, _: ConsumeMode) {

[3]

rust-clippy/clippy_lints/src/escape.rs

Lines 166 to 176 in 54bf4ff

	fn borrow(
	&mut self,
	_: HirId,
	_: Span,
	cmt: &cmt_<'tcx>,
	_: ty::Region<'_>,
	_: ty::BorrowKind,
	loan_cause: LoanCause,
	) {
	if let Categorization::Local(lid) = cmt.cat {
	match loan_cause {

I could need some help with [1]. The purpose of this is to "don't lint for constant values". cc @matthewjasper

For now I see what I can do with [2].

changelog: Temporary break boxed_local lint.