Auto merge of #63057 - Centril:rollup-z3a3c6v, r=Centril

Rollup of 8 pull requests

Successful merges:

 - #61207 (Allow lifetime elision in `Pin<&(mut) Self>`)
 - #62074 (squash of all commits for nth_back on ChunksMut)
 - #62771 (Break dependencies between `syntax_ext` and other crates)
 - #62883 (Refactoring use common code between option, result and accum)
 - #62949 (Re-enable assertions in PPC dist builder)
 - #62996 (tidy: Add a check for inline unit tests)
 - #63038 (Make more informative error on outer attribute after inner)
 - #63050 (ci: download awscli from our mirror)

Failed merges:

r? @ghost

1 files changed, 4 insertions, 1 deletions

diff --git a/src/libsyntax/parse/mod.rs b/src/libsyntax/parse/mod.rs
index 225065c1cf1..1aac8bbb7aa 100644
--- a/src/libsyntax/parse/mod.rs
+++ b/src/libsyntax/parse/mod.rs
@@ -10,9 +10,10 @@ use crate::parse::token::TokenKind;
 use crate::tokenstream::{TokenStream, TokenTree};
 use crate::diagnostics::plugin::ErrorMap;
 use crate::print::pprust;
+use crate::symbol::Symbol;
 
 use errors::{Applicability, FatalError, Level, Handler, ColorConfig, Diagnostic, DiagnosticBuilder};
-use rustc_data_structures::sync::{Lrc, Lock};
+use rustc_data_structures::sync::{Lrc, Lock, Once};
 use syntax_pos::{Span, SourceFile, FileName, MultiSpan};
 use syntax_pos::edition::Edition;
 
@@ -58,6 +59,7 @@ pub struct ParseSess {
     pub let_chains_spans: Lock<Vec<Span>>,
     // Places where `async || ..` exprs were used and should be feature gated.
     pub async_closure_spans: Lock<Vec<Span>>,
+    pub injected_crate_name: Once<Symbol>,
 }
 
 impl ParseSess {
@@ -86,6 +88,7 @@ impl ParseSess {
             param_attr_spans: Lock::new(Vec::new()),
             let_chains_spans: Lock::new(Vec::new()),
             async_closure_spans: Lock::new(Vec::new()),
+            injected_crate_name: Once::new(),
         }
     }