Auto merge of rust-lang#106866 - matthiaskrgr:rollup-r063s44, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#105526 (libcore: make result of iter::from_generator Clone)
 - rust-lang#106563 (Fix `unused_braces` on generic const expr macro call)
 - rust-lang#106661 (Stop probing for statx unless necessary)
 - rust-lang#106820 (Deprioritize fulfillment errors that come from expansions.)
 - rust-lang#106828 (rustdoc: remove `docblock` class from notable trait popover)
 - rust-lang#106849 (Allocate one less vec while parsing arrays)
 - rust-lang#106855 (rustdoc: few small cleanups)
 - rust-lang#106860 (Remove various double spaces in the libraries.)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

compiler/rustc_lint/src/unused.rs

@@ -1105,6 +1105,7 @@ impl UnusedDelimLint for UnusedBraces {
                                 || matches!(expr.kind, ast::ExprKind::Lit(_)))
                             && !cx.sess().source_map().is_multiline(value.span)
                             && value.attrs.is_empty()
+                            && !expr.span.from_expansion()
                             && !value.span.from_expansion()
                             && !inner.span.from_expansion()
                         {

compiler/rustc_parse/src/parser/expr.rs

@@ -1475,9 +1475,8 @@ impl<'a> Parser<'a> {
             } else if self.eat(&token::Comma) {
                 // Vector with two or more elements.
                 let sep = SeqSep::trailing_allowed(token::Comma);
-                let (remaining_exprs, _) = self.parse_seq_to_end(close, sep, |p| p.parse_expr())?;
-                let mut exprs = vec![first_expr];
-                exprs.extend(remaining_exprs);
+                let (mut exprs, _) = self.parse_seq_to_end(close, sep, |p| p.parse_expr())?;
+                exprs.insert(0, first_expr);
                 ExprKind::Array(exprs)
             } else {
                 // Vector with one element