Remove `extern crate rustc_middle` from numerous crates.

3 files changed, 2 insertions, 2 deletions

diff --git a/compiler/rustc_incremental/src/assert_dep_graph.rs b/compiler/rustc_incremental/src/assert_dep_graph.rs
index aa6f184a2d7..8c66f239f8e 100644
--- a/compiler/rustc_incremental/src/assert_dep_graph.rs
+++ b/compiler/rustc_incremental/src/assert_dep_graph.rs
@@ -46,6 +46,7 @@ use rustc_middle::dep_graph::{
 };
 use rustc_middle::hir::nested_filter;
 use rustc_middle::ty::TyCtxt;
+use rustc_middle::{bug, span_bug};
 use rustc_span::symbol::{sym, Symbol};
 use rustc_span::Span;
 
diff --git a/compiler/rustc_incremental/src/lib.rs b/compiler/rustc_incremental/src/lib.rs
index 0729986f32f..79402c88de4 100644
--- a/compiler/rustc_incremental/src/lib.rs
+++ b/compiler/rustc_incremental/src/lib.rs
@@ -7,8 +7,6 @@
 #![allow(internal_features)]
 
 #[macro_use]
-extern crate rustc_middle;
-#[macro_use]
 extern crate tracing;
 
 mod assert_dep_graph;
diff --git a/compiler/rustc_incremental/src/persist/fs.rs b/compiler/rustc_incremental/src/persist/fs.rs
index bf6ee044a0b..3d7c0cfc30a 100644
--- a/compiler/rustc_incremental/src/persist/fs.rs
+++ b/compiler/rustc_incremental/src/persist/fs.rs
@@ -110,6 +110,7 @@ use rustc_data_structures::unord::{UnordMap, UnordSet};
 use rustc_data_structures::{base_n, flock};
 use rustc_errors::ErrorGuaranteed;
 use rustc_fs_util::{link_or_copy, try_canonicalize, LinkOrCopy};
+use rustc_middle::bug;
 use rustc_session::config::CrateType;
 use rustc_session::output::{collect_crate_types, find_crate_name};
 use rustc_session::{Session, StableCrateId};