Auto merge of rust-lang#12554 - Kobzol:assigning-clones-unspecified, …

…r=blyxyas

Change applicability of `assigning_clones` to `Unspecified`

Before we deal with rust-lang/rust-clippy#12473 and the borrow checker errors, I think that it would be better to downgrade this lint, since it can break code.

changelog: Change the applicability of `assigning_clones` to `Unspecified`

r? `@blyxyas`

clippy_lints/src/assigning_clones.rs

@@ -207,7 +207,7 @@ fn is_ok_to_suggest<'tcx>(cx: &LateContext<'tcx>, lhs: &Expr<'tcx>, call: &CallC
 
 fn suggest<'tcx>(cx: &LateContext<'tcx>, assign_expr: &Expr<'tcx>, lhs: &Expr<'tcx>, call: &CallCandidate<'tcx>) {
     span_lint_and_then(cx, ASSIGNING_CLONES, assign_expr.span, call.message(), |diag| {
-        let mut applicability = Applicability::MachineApplicable;
+        let mut applicability = Applicability::Unspecified;
 
         diag.span_suggestion(
             assign_expr.span,