Remove crate visibility usage in compiler

compiler/rustc_builtin_macros/src/cfg_accessible.rs

@@ -7,7 +7,7 @@ use rustc_parse::validate_attr;
 use rustc_span::symbol::sym;
 use rustc_span::Span;
 
-crate struct Expander;
+pub(crate) struct Expander;
 
 fn validate_input<'a>(ecx: &mut ExtCtxt<'_>, mi: &'a ast::MetaItem) -> Option<&'a ast::Path> {
     match mi.meta_item_list() {

compiler/rustc_builtin_macros/src/cfg_eval.rs

@@ -19,7 +19,7 @@ use rustc_span::symbol::sym;
 use rustc_span::Span;
 use smallvec::SmallVec;
 
-crate fn expand(
+pub(crate) fn expand(
     ecx: &mut ExtCtxt<'_>,
     _span: Span,
     meta_item: &ast::MetaItem,
@@ -30,7 +30,7 @@ crate fn expand(
     vec![cfg_eval(ecx.sess, ecx.ecfg.features, annotatable, ecx.current_expansion.lint_node_id)]
 }
 
-crate fn cfg_eval(
+pub(crate) fn cfg_eval(
     sess: &Session,
     features: Option<&Features>,
     annotatable: Annotatable,

compiler/rustc_builtin_macros/src/derive.rs

@@ -10,7 +10,7 @@ use rustc_session::Session;
 use rustc_span::symbol::{sym, Ident};
 use rustc_span::Span;
 
-crate struct Expander;
+pub(crate) struct Expander;
 
 impl MultiItemModifier for Expander {
     fn expand(

compiler/rustc_builtin_macros/src/deriving/mod.rs

@@ -38,8 +38,8 @@ pub mod partial_ord;
 
 pub mod generic;
 
-crate struct BuiltinDerive(
-    crate fn(&mut ExtCtxt<'_>, Span, &MetaItem, &Annotatable, &mut dyn FnMut(Annotatable)),
+pub(crate) struct BuiltinDerive(
+    pub(crate) fn(&mut ExtCtxt<'_>, Span, &MetaItem, &Annotatable, &mut dyn FnMut(Annotatable)),
 );
 
 impl MultiItemModifier for BuiltinDerive {

compiler/rustc_builtin_macros/src/lib.rs

@@ -4,7 +4,6 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(array_windows)]
 #![feature(box_patterns)]
-#![feature(crate_visibility_modifier)]
 #![feature(decl_macro)]
 #![feature(is_sorted)]
 #![feature(nll)]