diff --git a/Cargo.lock b/Cargo.lock
index 325a19210d9..941888f7bbb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,1591 +4,1703 @@
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-"checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
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-"checksum structopt-derive 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "c6e79c80e0f4efd86ca960218d4e056249be189ff1c42824dcd9a7f51a56f0bd"
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-"checksum syn-mid 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7be3539f6c128a931cf19dcee741c1af532c7fd387baa739c03dd2e96479338a"
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-"checksum termcolor 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "96d6098003bde162e4277c70665bd87c326f5a0c3f3fbfb285787fa482d54e6e"
-"checksum termize 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1706be6b564323ce7092f5f7e6b118a14c8ef7ed0e69c8c5329c914a9f101295"
-"checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
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-"checksum thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
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-"checksum winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7168bab6e1daee33b4557efd0e95d5ca70a03706d39fa5f3fe7a236f584b03c9"
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-"checksum wincolor 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "96f5016b18804d24db43cebf3c77269e7569b8954a8464501c216cc5e070eaa9"
+ "winapi",
+ "winapi-util",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 6caf337e9ec..6abf2ead7de 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 
 name = "rustfmt-nightly"
-version = "1.4.20"
+version = "1.4.21"
 authors = ["Nicholas Cameron <ncameron@mozilla.com>", "The Rustfmt developers"]
 description = "Tool to find and fix Rust formatting issues"
 repository = "https://github.com/rust-lang/rustfmt"
@@ -66,36 +66,36 @@ rustc-workspace-hack = "1.0.0"
 
 [dependencies.rustc_ast]
 package = "rustc-ap-rustc_ast"
-version = "671.0.0"
+version = "677.0.0"
 
 [dependencies.rustc_ast_pretty]
 package = "rustc-ap-rustc_ast_pretty"
-version = "671.0.0"
+version = "677.0.0"
 
 [dependencies.rustc_attr]
 package = "rustc-ap-rustc_attr"
-version = "671.0.0"
+version = "677.0.0"
 
 [dependencies.rustc_data_structures]
 package = "rustc-ap-rustc_data_structures"
-version = "671.0.0"
+version = "677.0.0"
 
 [dependencies.rustc_errors]
 package = "rustc-ap-rustc_errors"
-version = "671.0.0"
+version = "677.0.0"
 
 [dependencies.rustc_expand]
 package = "rustc-ap-rustc_expand"
-version = "671.0.0"
+version = "677.0.0"
 
 [dependencies.rustc_parse]
 package = "rustc-ap-rustc_parse"
-version = "671.0.0"
+version = "677.0.0"
 
 [dependencies.rustc_session]
 package = "rustc-ap-rustc_session"
-version = "671.0.0"
+version = "677.0.0"
 
 [dependencies.rustc_span]
 package = "rustc-ap-rustc_span"
-version = "671.0.0"
+version = "677.0.0"
diff --git a/src/attr.rs b/src/attr.rs
index b9e160020fb..b3ce47cf319 100644
--- a/src/attr.rs
+++ b/src/attr.rs
@@ -2,7 +2,7 @@
 
 use rustc_ast::ast;
 use rustc_ast::attr::HasAttrs;
-use rustc_span::{symbol::sym, BytePos, Span, DUMMY_SP};
+use rustc_span::{symbol::sym, BytePos, Span, Symbol, DUMMY_SP};
 
 use self::doc_comment::DocCommentFormatter;
 use crate::comment::{contains_comment, rewrite_doc_comment, CommentStyle};
@@ -18,6 +18,20 @@ use crate::utils::{count_newlines, mk_sp};
 
 mod doc_comment;
 
+pub(crate) fn contains_name(attrs: &[ast::Attribute], name: Symbol) -> bool {
+    attrs.iter().any(|attr| attr.has_name(name))
+}
+
+pub(crate) fn first_attr_value_str_by_name(
+    attrs: &[ast::Attribute],
+    name: Symbol,
+) -> Option<Symbol> {
+    attrs
+        .iter()
+        .find(|attr| attr.has_name(name))
+        .and_then(|attr| attr.value_str())
+}
+
 /// Returns attributes on the given statement.
 pub(crate) fn get_attrs_from_stmt(stmt: &ast::Stmt) -> &[ast::Attribute] {
     stmt.attrs()
@@ -49,7 +63,7 @@ pub(crate) fn filter_inline_attrs(
 }
 
 fn is_derive(attr: &ast::Attribute) -> bool {
-    attr.check_name(sym::derive)
+    attr.has_name(sym::derive)
 }
 
 /// Returns the arguments of `#[derive(...)]`.
@@ -327,7 +341,7 @@ impl Rewrite for ast::Attribute {
 
             if let Some(ref meta) = self.meta() {
                 // This attribute is possibly a doc attribute needing normalization to a doc comment
-                if context.config.normalize_doc_attributes() && meta.check_name(sym::doc) {
+                if context.config.normalize_doc_attributes() && meta.has_name(sym::doc) {
                     if let Some(ref literal) = meta.value_str() {
                         let comment_style = match self.style {
                             ast::AttrStyle::Inner => CommentStyle::Doc,
diff --git a/src/formatting.rs b/src/formatting.rs
index 19affc3e3e1..4da89e760ad 100644
--- a/src/formatting.rs
+++ b/src/formatting.rs
@@ -11,6 +11,7 @@ use self::newline_style::apply_newline_style;
 use crate::comment::{CharClasses, FullCodeCharKind};
 use crate::config::{Config, FileName, Verbosity};
 use crate::issues::BadIssueSeeker;
+use crate::modules::Module;
 use crate::syntux::parser::{DirectoryOwnership, Parser, ParserError};
 use crate::syntux::session::ParseSess;
 use crate::utils::count_newlines;
@@ -29,7 +30,7 @@ impl<'b, T: Write + 'b> Session<'b, T> {
             return Err(ErrorKind::VersionMismatch);
         }
 
-        rustc_ast::with_session_globals(self.config.edition().to_libsyntax_pos_edition(), || {
+        rustc_span::with_session_globals(self.config.edition().to_libsyntax_pos_edition(), || {
             if self.config.disable_all_formatting() {
                 // When the input is from stdin, echo back the input.
                 if let Input::Text(ref buf) = input {
@@ -102,8 +103,7 @@ fn format_project<T: FormatHandler>(
             continue;
         }
         should_emit_verbose(input_is_stdin, config, || println!("Formatting {}", path));
-        let is_root = path == main_file;
-        context.format_file(path, &module, is_root)?;
+        context.format_file(path, &module)?;
     }
     timer = timer.done_formatting();
 
@@ -134,13 +134,8 @@ impl<'a, T: FormatHandler + 'a> FormatContext<'a, T> {
     }
 
     // Formats a single file/module.
-    fn format_file(
-        &mut self,
-        path: FileName,
-        module: &ast::Mod,
-        is_root: bool,
-    ) -> Result<(), ErrorKind> {
-        let snippet_provider = self.parse_session.snippet_provider(module.inner);
+    fn format_file(&mut self, path: FileName, module: &Module<'_>) -> Result<(), ErrorKind> {
+        let snippet_provider = self.parse_session.snippet_provider(module.as_ref().inner);
         let mut visitor = FmtVisitor::from_parse_sess(
             &self.parse_session,
             &self.config,
@@ -149,19 +144,9 @@ impl<'a, T: FormatHandler + 'a> FormatContext<'a, T> {
         );
         visitor.skip_context.update_with_attrs(&self.krate.attrs);
 
-        // Format inner attributes if available.
-        if !self.krate.attrs.is_empty() && is_root {
-            visitor.skip_empty_lines(snippet_provider.end_pos());
-            if visitor.visit_attrs(&self.krate.attrs, ast::AttrStyle::Inner) {
-                visitor.push_rewrite(module.inner, None);
-            } else {
-                visitor.format_separate_mod(module, snippet_provider.end_pos());
-            }
-        } else {
-            visitor.last_pos = snippet_provider.start_pos();
-            visitor.skip_empty_lines(snippet_provider.end_pos());
-            visitor.format_separate_mod(module, snippet_provider.end_pos());
-        };
+        visitor.last_pos = snippet_provider.start_pos();
+        visitor.skip_empty_lines(snippet_provider.end_pos());
+        visitor.format_separate_mod(module, snippet_provider.end_pos());
 
         debug_assert_eq!(
             visitor.line_number,
diff --git a/src/modules.rs b/src/modules.rs
index cbe663cb412..b4d2f1fc822 100644
--- a/src/modules.rs
+++ b/src/modules.rs
@@ -3,6 +3,7 @@ use std::collections::BTreeMap;
 use std::path::{Path, PathBuf};
 
 use rustc_ast::ast;
+use rustc_ast::attr::HasAttrs;
 use rustc_ast::visit::Visitor;
 use rustc_span::symbol::{self, sym, Symbol};
 use thiserror::Error;
@@ -18,12 +19,48 @@ use crate::utils::contains_skip;
 
 mod visitor;
 
-type FileModMap<'ast> = BTreeMap<FileName, Cow<'ast, ast::Mod>>;
+type FileModMap<'ast> = BTreeMap<FileName, Module<'ast>>;
 
 lazy_static! {
     static ref CFG_IF: Symbol = Symbol::intern("cfg_if");
 }
 
+/// Represents module with its inner attributes.
+#[derive(Debug, Clone)]
+pub(crate) struct Module<'a> {
+    ast_mod: Cow<'a, ast::Mod>,
+    inner_attr: Vec<ast::Attribute>,
+}
+
+impl<'a> Module<'a> {
+    pub(crate) fn new(ast_mod: Cow<'a, ast::Mod>, attrs: &[ast::Attribute]) -> Self {
+        let inner_attr = attrs
+            .iter()
+            .filter(|attr| attr.style == ast::AttrStyle::Inner)
+            .cloned()
+            .collect();
+        Module {
+            ast_mod,
+            inner_attr,
+        }
+    }
+}
+
+impl<'a> HasAttrs for Module<'a> {
+    fn attrs(&self) -> &[ast::Attribute] {
+        &self.inner_attr
+    }
+    fn visit_attrs(&mut self, f: impl FnOnce(&mut Vec<ast::Attribute>)) {
+        f(&mut self.inner_attr)
+    }
+}
+
+impl<'a> AsRef<ast::Mod> for Module<'a> {
+    fn as_ref(&self) -> &ast::Mod {
+        &self.ast_mod
+    }
+}
+
 /// Maps each module to the corresponding file.
 pub(crate) struct ModResolver<'ast, 'sess> {
     parse_sess: &'sess ParseSess,
@@ -53,11 +90,9 @@ pub(crate) enum ModuleResolutionErrorKind {
 #[derive(Clone)]
 enum SubModKind<'a, 'ast> {
     /// `mod foo;`
-    External(PathBuf, DirectoryOwnership, Cow<'ast, ast::Mod>),
+    External(PathBuf, DirectoryOwnership, Module<'ast>),
     /// `mod foo;` with multiple sources.
-    MultiExternal(Vec<(PathBuf, DirectoryOwnership, Cow<'ast, ast::Mod>)>),
-    /// `#[path = "..."] mod foo {}`
-    InternalWithPath(PathBuf),
+    MultiExternal(Vec<(PathBuf, DirectoryOwnership, Module<'ast>)>),
     /// `mod foo {}`
     Internal(&'a ast::Item),
 }
@@ -96,8 +131,10 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
             self.visit_mod_from_ast(&krate.module)?;
         }
 
-        self.file_map
-            .insert(root_filename, Cow::Borrowed(&krate.module));
+        self.file_map.insert(
+            root_filename,
+            Module::new(Cow::Borrowed(&krate.module), &krate.attrs),
+        );
         Ok(self.file_map)
     }
 
@@ -107,7 +144,10 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
         visitor.visit_item(&item);
         for module_item in visitor.mods() {
             if let ast::ItemKind::Mod(ref sub_mod) = module_item.item.kind {
-                self.visit_sub_mod(&module_item.item, Cow::Owned(sub_mod.clone()))?;
+                self.visit_sub_mod(
+                    &module_item.item,
+                    Module::new(Cow::Owned(sub_mod.clone()), &module_item.item.attrs),
+                )?;
             }
         }
         Ok(())
@@ -122,7 +162,7 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
             }
 
             if let ast::ItemKind::Mod(ref sub_mod) = item.kind {
-                self.visit_sub_mod(&item, Cow::Owned(sub_mod.clone()))?;
+                self.visit_sub_mod(&item, Module::new(Cow::Owned(sub_mod.clone()), &item.attrs))?;
             }
         }
         Ok(())
@@ -136,7 +176,7 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
             }
 
             if let ast::ItemKind::Mod(ref sub_mod) = item.kind {
-                self.visit_sub_mod(item, Cow::Borrowed(sub_mod))?;
+                self.visit_sub_mod(item, Module::new(Cow::Borrowed(sub_mod), &item.attrs))?;
             }
         }
         Ok(())
@@ -145,12 +185,12 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
     fn visit_sub_mod(
         &mut self,
         item: &'c ast::Item,
-        sub_mod: Cow<'ast, ast::Mod>,
+        sub_mod: Module<'ast>,
     ) -> Result<(), ModuleResolutionError> {
         let old_directory = self.directory.clone();
         let sub_mod_kind = self.peek_sub_mod(item, &sub_mod)?;
         if let Some(sub_mod_kind) = sub_mod_kind {
-            self.insert_sub_mod(sub_mod_kind.clone(), sub_mod.clone())?;
+            self.insert_sub_mod(sub_mod_kind.clone())?;
             self.visit_sub_mod_inner(sub_mod, sub_mod_kind)?;
         }
         self.directory = old_directory;
@@ -161,7 +201,7 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
     fn peek_sub_mod(
         &self,
         item: &'c ast::Item,
-        sub_mod: &Cow<'ast, ast::Mod>,
+        sub_mod: &Module<'ast>,
     ) -> Result<Option<SubModKind<'c, 'ast>>, ModuleResolutionError> {
         if contains_skip(&item.attrs) {
             return Ok(None);
@@ -173,19 +213,13 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
             self.find_external_module(item.ident, &item.attrs, sub_mod)
         } else {
             // An internal module (`mod foo { /* ... */ }`);
-            if let Some(path) = find_path_value(&item.attrs) {
-                let path = Path::new(&*path.as_str()).to_path_buf();
-                Ok(Some(SubModKind::InternalWithPath(path)))
-            } else {
-                Ok(Some(SubModKind::Internal(item)))
-            }
+            Ok(Some(SubModKind::Internal(item)))
         }
     }
 
     fn insert_sub_mod(
         &mut self,
         sub_mod_kind: SubModKind<'c, 'ast>,
-        _sub_mod: Cow<'ast, ast::Mod>,
     ) -> Result<(), ModuleResolutionError> {
         match sub_mod_kind {
             SubModKind::External(mod_path, _, sub_mod) => {
@@ -207,7 +241,7 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
 
     fn visit_sub_mod_inner(
         &mut self,
-        sub_mod: Cow<'ast, ast::Mod>,
+        sub_mod: Module<'ast>,
         sub_mod_kind: SubModKind<'c, 'ast>,
     ) -> Result<(), ModuleResolutionError> {
         match sub_mod_kind {
@@ -218,14 +252,6 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
                 };
                 self.visit_sub_mod_after_directory_update(sub_mod, Some(directory))
             }
-            SubModKind::InternalWithPath(mod_path) => {
-                // All `#[path]` files are treated as though they are a `mod.rs` file.
-                let directory = Directory {
-                    path: mod_path,
-                    ownership: DirectoryOwnership::Owned { relative: None },
-                };
-                self.visit_sub_mod_after_directory_update(sub_mod, Some(directory))
-            }
             SubModKind::Internal(ref item) => {
                 self.push_inline_mod_directory(item.ident, &item.attrs);
                 self.visit_sub_mod_after_directory_update(sub_mod, None)
@@ -245,13 +271,13 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
 
     fn visit_sub_mod_after_directory_update(
         &mut self,
-        sub_mod: Cow<'ast, ast::Mod>,
+        sub_mod: Module<'ast>,
         directory: Option<Directory>,
     ) -> Result<(), ModuleResolutionError> {
         if let Some(directory) = directory {
             self.directory = directory;
         }
-        match sub_mod {
+        match sub_mod.ast_mod {
             Cow::Borrowed(sub_mod) => self.visit_mod_from_ast(sub_mod),
             Cow::Owned(sub_mod) => self.visit_mod_outside_ast(sub_mod),
         }
@@ -262,7 +288,7 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
         &self,
         mod_name: symbol::Ident,
         attrs: &[ast::Attribute],
-        sub_mod: &Cow<'ast, ast::Mod>,
+        sub_mod: &Module<'ast>,
     ) -> Result<Option<SubModKind<'c, 'ast>>, ModuleResolutionError> {
         let relative = match self.directory.ownership {
             DirectoryOwnership::Owned { relative } => relative,
@@ -272,12 +298,13 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
             if self.parse_sess.is_file_parsed(&path) {
                 return Ok(None);
             }
-            return match Parser::parse_file_as_module(self.parse_sess, &path, sub_mod.inner) {
+            return match Parser::parse_file_as_module(self.parse_sess, &path, sub_mod.ast_mod.inner)
+            {
                 Ok((_, ref attrs)) if contains_skip(attrs) => Ok(None),
-                Ok((m, _)) => Ok(Some(SubModKind::External(
+                Ok(m) => Ok(Some(SubModKind::External(
                     path,
                     DirectoryOwnership::Owned { relative: None },
-                    Cow::Owned(m),
+                    Module::new(Cow::Owned(m.0), &m.1),
                 ))),
                 Err(ParserError::ParseError) => Err(ModuleResolutionError {
                     module: mod_name.to_string(),
@@ -315,13 +342,19 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
                         return Ok(Some(SubModKind::MultiExternal(mods_outside_ast)));
                     }
                 }
-                match Parser::parse_file_as_module(self.parse_sess, &path, sub_mod.inner) {
+                match Parser::parse_file_as_module(self.parse_sess, &path, sub_mod.ast_mod.inner) {
                     Ok((_, ref attrs)) if contains_skip(attrs) => Ok(None),
-                    Ok((m, _)) if outside_mods_empty => {
-                        Ok(Some(SubModKind::External(path, ownership, Cow::Owned(m))))
-                    }
-                    Ok((m, _)) => {
-                        mods_outside_ast.push((path.clone(), ownership, Cow::Owned(m)));
+                    Ok(m) if outside_mods_empty => Ok(Some(SubModKind::External(
+                        path,
+                        ownership,
+                        Module::new(Cow::Owned(m.0), &m.1),
+                    ))),
+                    Ok(m) => {
+                        mods_outside_ast.push((
+                            path.clone(),
+                            ownership,
+                            Module::new(Cow::Owned(m.0), &m.1),
+                        ));
                         if should_insert {
                             mods_outside_ast.push((path, ownership, sub_mod.clone()));
                         }
@@ -383,8 +416,8 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
     fn find_mods_outside_of_ast(
         &self,
         attrs: &[ast::Attribute],
-        sub_mod: &Cow<'ast, ast::Mod>,
-    ) -> Vec<(PathBuf, DirectoryOwnership, Cow<'ast, ast::Mod>)> {
+        sub_mod: &Module<'ast>,
+    ) -> Vec<(PathBuf, DirectoryOwnership, Module<'ast>)> {
         // Filter nested path, like `#[cfg_attr(feature = "foo", path = "bar.rs")]`.
         let mut path_visitor = visitor::PathVisitor::default();
         for attr in attrs.iter() {
@@ -408,17 +441,20 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
                 ));
                 continue;
             }
-            let m = match Parser::parse_file_as_module(self.parse_sess, &actual_path, sub_mod.inner)
-            {
+            let m = match Parser::parse_file_as_module(
+                self.parse_sess,
+                &actual_path,
+                sub_mod.ast_mod.inner,
+            ) {
                 Ok((_, ref attrs)) if contains_skip(attrs) => continue,
-                Ok((m, _)) => m,
+                Ok(m) => m,
                 Err(..) => continue,
             };
 
             result.push((
                 actual_path,
                 DirectoryOwnership::Owned { relative: None },
-                Cow::Owned(m),
+                Module::new(Cow::Owned(m.0), &m.1),
             ))
         }
         result
@@ -426,7 +462,7 @@ impl<'ast, 'sess, 'c> ModResolver<'ast, 'sess> {
 }
 
 fn path_value(attr: &ast::Attribute) -> Option<Symbol> {
-    if attr.check_name(sym::path) {
+    if attr.has_name(sym::path) {
         attr.value_str()
     } else {
         None
diff --git a/src/modules/visitor.rs b/src/modules/visitor.rs
index 942e70d0e88..42d5351080d 100644
--- a/src/modules/visitor.rs
+++ b/src/modules/visitor.rs
@@ -85,7 +85,7 @@ impl PathVisitor {
 
 impl<'ast> MetaVisitor<'ast> for PathVisitor {
     fn visit_meta_name_value(&mut self, meta_item: &'ast ast::MetaItem, lit: &'ast ast::Lit) {
-        if meta_item.check_name(Symbol::intern("path")) && lit.kind.is_str() {
+        if meta_item.has_name(Symbol::intern("path")) && lit.kind.is_str() {
             self.paths.push(lit_to_str(lit));
         }
     }
diff --git a/src/reorder.rs b/src/reorder.rs
index 3b9f2475acc..2e73861a5a2 100644
--- a/src/reorder.rs
+++ b/src/reorder.rs
@@ -8,7 +8,7 @@
 
 use std::cmp::{Ord, Ordering};
 
-use rustc_ast::{ast, attr};
+use rustc_ast::ast;
 use rustc_span::{symbol::sym, Span};
 
 use crate::config::Config;
@@ -147,7 +147,7 @@ fn rewrite_reorderable_items(
 }
 
 fn contains_macro_use_attr(item: &ast::Item) -> bool {
-    attr::contains_name(&item.attrs, sym::macro_use)
+    crate::attr::contains_name(&item.attrs, sym::macro_use)
 }
 
 /// A simplified version of `ast::ItemKind`.
diff --git a/src/syntux/parser.rs b/src/syntux/parser.rs
index decad02d049..2730ff37788 100644
--- a/src/syntux/parser.rs
+++ b/src/syntux/parser.rs
@@ -5,8 +5,9 @@ use rustc_ast::ast;
 use rustc_ast::token::{DelimToken, TokenKind};
 use rustc_errors::Diagnostic;
 use rustc_parse::{new_parser_from_file, parser::Parser as RawParser};
-use rustc_span::{symbol::kw, Span};
+use rustc_span::{sym, symbol::kw, Span};
 
+use crate::attr::first_attr_value_str_by_name;
 use crate::syntux::session::ParseSess;
 use crate::{Config, Input};
 
@@ -99,7 +100,15 @@ pub(crate) enum ParserError {
 
 impl<'a> Parser<'a> {
     pub(crate) fn submod_path_from_attr(attrs: &[ast::Attribute], path: &Path) -> Option<PathBuf> {
-        rustc_expand::module::submod_path_from_attr(attrs, path)
+        let path_string = first_attr_value_str_by_name(attrs, sym::path)?.as_str();
+        // On windows, the base path might have the form
+        // `\\?\foo\bar` in which case it does not tolerate
+        // mixed `/` and `\` separators, so canonicalize
+        // `/` to `\`.
+        #[cfg(windows)]
+        let path_string = path_string.replace("/", "\\");
+
+        Some(path.join(&*path_string))
     }
 
     pub(crate) fn parse_file_as_module(
diff --git a/src/utils.rs b/src/utils.rs
index bb0c6b7fb22..618172595eb 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -256,7 +256,7 @@ fn is_skip(meta_item: &MetaItem) -> bool {
                 || path_str == &*depr_skip_annotation().as_str()
         }
         MetaItemKind::List(ref l) => {
-            meta_item.check_name(sym::cfg_attr) && l.len() == 2 && is_skip_nested(&l[1])
+            meta_item.has_name(sym::cfg_attr) && l.len() == 2 && is_skip_nested(&l[1])
         }
         _ => false,
     }
diff --git a/src/visitor.rs b/src/visitor.rs
index 39421491697..779a3a268ef 100644
--- a/src/visitor.rs
+++ b/src/visitor.rs
@@ -1,7 +1,7 @@
 use std::cell::{Cell, RefCell};
 use std::rc::Rc;
 
-use rustc_ast::{ast, token::DelimToken, visit};
+use rustc_ast::{ast, attr::HasAttrs, token::DelimToken, visit};
 use rustc_span::{symbol, BytePos, Pos, Span};
 
 use crate::attr::*;
@@ -16,6 +16,7 @@ use crate::items::{
     StaticParts, StructParts,
 };
 use crate::macros::{macro_style, rewrite_macro, rewrite_macro_def, MacroPosition};
+use crate::modules::Module;
 use crate::rewrite::{Rewrite, RewriteContext};
 use crate::shape::{Indent, Shape};
 use crate::skip::{is_skip_attr, SkipContext};
@@ -810,7 +811,7 @@ impl<'b, 'a: 'b> FmtVisitor<'a> {
     // Returns true if we should skip the following item.
     pub(crate) fn visit_attrs(&mut self, attrs: &[ast::Attribute], style: ast::AttrStyle) -> bool {
         for attr in attrs {
-            if attr.check_name(depr_skip_annotation()) {
+            if attr.has_name(depr_skip_annotation()) {
                 let file_name = self.parse_sess.span_to_filename(attr.span);
                 self.report.append(
                     file_name,
@@ -938,10 +939,14 @@ impl<'b, 'a: 'b> FmtVisitor<'a> {
         }
     }
 
-    pub(crate) fn format_separate_mod(&mut self, m: &ast::Mod, end_pos: BytePos) {
+    pub(crate) fn format_separate_mod(&mut self, m: &Module<'_>, end_pos: BytePos) {
         self.block_indent = Indent::empty();
-        self.walk_mod_items(m);
-        self.format_missing_with_indent(end_pos);
+        if self.visit_attrs(m.attrs(), ast::AttrStyle::Inner) {
+            self.push_skipped_with_span(m.attrs(), m.as_ref().inner, m.as_ref().inner);
+        } else {
+            self.walk_mod_items(m.as_ref());
+            self.format_missing_with_indent(end_pos);
+        }
     }
 
     pub(crate) fn skip_empty_lines(&mut self, end_pos: BytePos) {
diff --git a/tests/target/inner-module-path/b.rs b/tests/target/inner-module-path/b.rs
new file mode 100644
index 00000000000..8b137891791
--- /dev/null
+++ b/tests/target/inner-module-path/b.rs
@@ -0,0 +1 @@
+
diff --git a/tests/target/inner-module-path/c/d.rs b/tests/target/inner-module-path/c/d.rs
new file mode 100644
index 00000000000..8b137891791
--- /dev/null
+++ b/tests/target/inner-module-path/c/d.rs
@@ -0,0 +1 @@
+
diff --git a/tests/target/inner-module-path/lib.rs b/tests/target/inner-module-path/lib.rs
new file mode 100644
index 00000000000..60d246dd5fb
--- /dev/null
+++ b/tests/target/inner-module-path/lib.rs
@@ -0,0 +1,8 @@
+#[path = "."]
+mod a {
+    mod b;
+}
+
+mod c {
+    mod d;
+}