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, 10 insertions, 5 deletions

diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index 75b4e89ec01..bb6a8dfb141 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -18,12 +18,17 @@
 #![feature(label_break_value)]
 #![feature(mem_take)]
 #![feature(nll)]
+#![feature(proc_macro_diagnostic)]
+#![feature(proc_macro_internals)]
+#![feature(proc_macro_span)]
 #![feature(rustc_diagnostic_macros)]
 #![feature(try_trait)]
 #![feature(unicode_internals)]
 
 #![recursion_limit="256"]
 
+extern crate proc_macro;
+
 pub use errors;
 use rustc_data_structures::sync::Lock;
 use rustc_data_structures::bit_set::GrowableBitSet;
@@ -37,6 +42,7 @@ const MACRO_ARGUMENTS: Option<&'static str> = Some("macro arguments");
 // way towards a non-panic!-prone parser. It should be used for fatal parsing
 // errors; eventually we plan to convert all code using panictry to just use
 // normal try.
+#[macro_export]
 macro_rules! panictry {
     ($e:expr) => ({
         use std::result::Result::{Ok, Err};
@@ -147,10 +153,8 @@ pub mod mut_visit;
 pub mod parse;
 pub mod ptr;
 pub mod show_span;
-pub mod std_inject;
 pub use syntax_pos::edition;
 pub use syntax_pos::symbol;
-pub mod test;
 pub mod tokenstream;
 pub mod visit;
 
@@ -161,14 +165,15 @@ pub mod print {
 }
 
 pub mod ext {
+    mod placeholders;
+    mod proc_macro_server;
+
     pub use syntax_pos::hygiene;
     pub mod allocator;
     pub mod base;
     pub mod build;
-    pub mod derive;
     pub mod expand;
-    pub mod placeholders;
-    pub mod source_util;
+    pub mod proc_macro;
 
     pub mod tt {
         pub mod transcribe;