Remove `extern crate rustc_middle` from numerous crates.

compiler/rustc_borrowck/src/borrow_set.rs

@@ -6,6 +6,7 @@ use rustc_index::bit_set::BitSet;
 use rustc_middle::mir::traversal;
 use rustc_middle::mir::visit::{MutatingUseContext, NonUseContext, PlaceContext, Visitor};
 use rustc_middle::mir::{self, Body, Local, Location};
+use rustc_middle::span_bug;
 use rustc_middle::ty::{RegionVid, TyCtxt};
 use rustc_mir_dataflow::move_paths::MoveData;
 use std::fmt;

compiler/rustc_borrowck/src/borrowck_errors.rs

@@ -2,6 +2,7 @@
 #![allow(rustc::untranslatable_diagnostic)]
 
 use rustc_errors::{codes::*, struct_span_code_err, Diag, DiagCtxt};
+use rustc_middle::span_bug;
 use rustc_middle::ty::{self, Ty, TyCtxt};
 use rustc_span::Span;
 

compiler/rustc_borrowck/src/def_use.rs

@@ -1,3 +1,4 @@
+use rustc_middle::bug;
 use rustc_middle::mir::visit::{
     MutatingUseContext, NonMutatingUseContext, NonUseContext, PlaceContext,
 };

compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs

@@ -13,6 +13,7 @@ use rustc_hir::def::{DefKind, Res};
 use rustc_hir::intravisit::{walk_block, walk_expr, Map, Visitor};
 use rustc_hir::{CoroutineDesugaring, PatField};
 use rustc_hir::{CoroutineKind, CoroutineSource, LangItem};
+use rustc_middle::bug;
 use rustc_middle::hir::nested_filter::OnlyBodies;
 use rustc_middle::mir::tcx::PlaceTy;
 use rustc_middle::mir::{

compiler/rustc_borrowck/src/diagnostics/mod.rs

@@ -12,6 +12,7 @@ use rustc_hir::CoroutineKind;
 use rustc_index::IndexSlice;
 use rustc_infer::infer::BoundRegionConversionTime;
 use rustc_infer::traits::{FulfillmentErrorCode, SelectionError};
+use rustc_middle::bug;
 use rustc_middle::mir::tcx::PlaceTy;
 use rustc_middle::mir::{
     AggregateKind, CallSource, ConstOperand, FakeReadCause, Local, LocalInfo, LocalKind, Location,

compiler/rustc_borrowck/src/diagnostics/move_errors.rs

@@ -4,6 +4,7 @@
 use rustc_errors::{Applicability, Diag};
 use rustc_hir::intravisit::Visitor;
 use rustc_hir::{CaptureBy, ExprKind, HirId, Node};
+use rustc_middle::bug;
 use rustc_middle::mir::*;
 use rustc_middle::ty::{self, Ty};
 use rustc_mir_dataflow::move_paths::{LookupResult, MovePathIndex};

compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs

@@ -7,6 +7,7 @@ use rustc_errors::{Applicability, Diag};
 use rustc_hir::intravisit::Visitor;
 use rustc_hir::{self as hir, BindingMode, ByRef, Node};
 use rustc_infer::traits;
+use rustc_middle::bug;
 use rustc_middle::mir::{Mutability, Place, PlaceRef, ProjectionElem};
 use rustc_middle::ty::{self, InstanceDef, ToPredicate, Ty, TyCtxt};
 use rustc_middle::{

compiler/rustc_borrowck/src/diagnostics/region_errors.rs

@@ -18,6 +18,7 @@ use rustc_infer::infer::{
     error_reporting::unexpected_hidden_region_diagnostic,
     NllRegionVariableOrigin, RelateParamBound,
 };
+use rustc_middle::bug;
 use rustc_middle::hir::place::PlaceBase;
 use rustc_middle::mir::{ConstraintCategory, ReturnConstraint};
 use rustc_middle::ty::GenericArgs;

compiler/rustc_borrowck/src/diagnostics/region_name.rs

@@ -11,6 +11,7 @@ use rustc_hir::def::{DefKind, Res};
 use rustc_middle::ty::print::RegionHighlightMode;
 use rustc_middle::ty::{self, RegionVid, Ty};
 use rustc_middle::ty::{GenericArgKind, GenericArgsRef};
+use rustc_middle::{bug, span_bug};
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::{Span, DUMMY_SP};
 

compiler/rustc_borrowck/src/lib.rs

@@ -14,8 +14,6 @@
 #![feature(stmt_expr_attributes)]
 #![feature(try_blocks)]
 
-#[macro_use]
-extern crate rustc_middle;
 #[macro_use]
 extern crate tracing;
 
@@ -33,6 +31,7 @@ use rustc_middle::mir::tcx::PlaceTy;
 use rustc_middle::mir::*;
 use rustc_middle::query::Providers;
 use rustc_middle::ty::{self, ParamEnv, RegionVid, TyCtxt};
+use rustc_middle::{bug, span_bug};
 use rustc_session::lint::builtin::UNUSED_MUT;
 use rustc_span::{Span, Symbol};
 use rustc_target::abi::FieldIdx;

compiler/rustc_borrowck/src/places_conflict.rs

@@ -54,6 +54,7 @@ use crate::ArtificialField;
 use crate::Overlap;
 use crate::{AccessDepth, Deep, Shallow};
 use rustc_hir as hir;
+use rustc_middle::bug;
 use rustc_middle::mir::{
     Body, BorrowKind, FakeBorrowKind, MutBorrowKind, Place, PlaceElem, PlaceRef, ProjectionElem,
 };

compiler/rustc_borrowck/src/polonius/loan_invalidations.rs

@@ -1,4 +1,5 @@
 use rustc_data_structures::graph::dominators::Dominators;
+use rustc_middle::bug;
 use rustc_middle::mir::visit::Visitor;
 use rustc_middle::mir::{
     self, BasicBlock, Body, FakeBorrowKind, Location, NonDivergingIntrinsic, Place, Rvalue,

compiler/rustc_borrowck/src/region_infer/mod.rs

@@ -11,6 +11,7 @@ use rustc_index::{IndexSlice, IndexVec};
 use rustc_infer::infer::outlives::test_type_match;
 use rustc_infer::infer::region_constraints::{GenericKind, VarInfos, VerifyBound, VerifyIfEq};
 use rustc_infer::infer::{InferCtxt, NllRegionVariableOrigin, RegionVariableOrigin};
+use rustc_middle::bug;
 use rustc_middle::mir::{
     BasicBlock, Body, ClosureOutlivesRequirement, ClosureOutlivesSubject, ClosureOutlivesSubjectTy,
     ClosureRegionRequirements, ConstraintCategory, Local, Location, ReturnConstraint,

compiler/rustc_borrowck/src/type_check/canonical.rs

@@ -2,6 +2,7 @@ use std::fmt;
 
 use rustc_errors::ErrorGuaranteed;
 use rustc_infer::infer::canonical::Canonical;
+use rustc_middle::bug;
 use rustc_middle::mir::ConstraintCategory;
 use rustc_middle::ty::{self, ToPredicate, Ty, TyCtxt, TypeFoldable};
 use rustc_span::def_id::DefId;

compiler/rustc_borrowck/src/type_check/constraint_conversion.rs

@@ -4,6 +4,7 @@ use rustc_infer::infer::outlives::env::RegionBoundPairs;
 use rustc_infer::infer::outlives::obligations::{TypeOutlives, TypeOutlivesDelegate};
 use rustc_infer::infer::region_constraints::{GenericKind, VerifyBound};
 use rustc_infer::infer::{self, InferCtxt, SubregionOrigin};
+use rustc_middle::bug;
 use rustc_middle::mir::{ClosureOutlivesSubject, ClosureRegionRequirements, ConstraintCategory};
 use rustc_middle::traits::query::NoSolution;
 use rustc_middle::traits::ObligationCause;

compiler/rustc_borrowck/src/type_check/liveness/mod.rs

@@ -2,6 +2,7 @@ use itertools::{Either, Itertools};
 use rustc_data_structures::fx::FxHashSet;
 use rustc_middle::mir::visit::{TyContext, Visitor};
 use rustc_middle::mir::{Body, Local, Location, SourceInfo};
+use rustc_middle::span_bug;
 use rustc_middle::ty::visit::TypeVisitable;
 use rustc_middle::ty::{GenericArgsRef, Region, RegionVid, Ty, TyCtxt};
 use rustc_mir_dataflow::impls::MaybeInitializedPlaces;

compiler/rustc_borrowck/src/type_check/mod.rs

@@ -33,6 +33,7 @@ use rustc_middle::ty::{
     OpaqueHiddenType, OpaqueTypeKey, RegionVid, Ty, TyCtxt, UserType, UserTypeAnnotationIndex,
 };
 use rustc_middle::ty::{GenericArgsRef, UserArgs};
+use rustc_middle::{bug, span_bug};
 use rustc_mir_dataflow::points::DenseLocationMap;
 use rustc_span::def_id::CRATE_DEF_ID;
 use rustc_span::source_map::Spanned;

compiler/rustc_borrowck/src/type_check/relate_tys.rs

@@ -5,6 +5,7 @@ use rustc_infer::infer::NllRegionVariableOrigin;
 use rustc_infer::infer::{ObligationEmittingRelation, StructurallyRelateAliases};
 use rustc_infer::traits::{Obligation, PredicateObligations};
 use rustc_middle::mir::ConstraintCategory;
+use rustc_middle::span_bug;
 use rustc_middle::traits::query::NoSolution;
 use rustc_middle::traits::ObligationCause;
 use rustc_middle::ty::fold::FnMutDelegate;

compiler/rustc_borrowck/src/universal_regions.rs

@@ -27,6 +27,7 @@ use rustc_middle::ty::fold::TypeFoldable;
 use rustc_middle::ty::print::with_no_trimmed_paths;
 use rustc_middle::ty::{self, InlineConstArgs, InlineConstArgsParts, RegionVid, Ty, TyCtxt};
 use rustc_middle::ty::{GenericArgs, GenericArgsRef};
+use rustc_middle::{bug, span_bug};
 use rustc_span::symbol::{kw, sym};
 use rustc_span::Symbol;
 use std::iter;

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -8,6 +8,7 @@ use rustc_fs_util::{fix_windows_verbatim_for_gcc, try_canonicalize};
 use rustc_hir::def_id::{CrateNum, LOCAL_CRATE};
 use rustc_metadata::find_native_static_library;
 use rustc_metadata::fs::{copy_to_stdout, emit_wrapper_file, METADATA_FILENAME};
+use rustc_middle::bug;
 use rustc_middle::middle::debugger_visualizer::DebuggerVisualizerFile;
 use rustc_middle::middle::dependency_format::Linkage;
 use rustc_middle::middle::exported_symbols::SymbolExportKind;

compiler/rustc_codegen_ssa/src/back/linker.rs

@@ -12,6 +12,7 @@ use std::{env, mem, str};
 
 use rustc_hir::def_id::{CrateNum, LOCAL_CRATE};
 use rustc_metadata::find_native_static_library;
+use rustc_middle::bug;
 use rustc_middle::middle::dependency_format::Linkage;
 use rustc_middle::middle::exported_symbols;
 use rustc_middle::middle::exported_symbols::{ExportedSymbol, SymbolExportInfo, SymbolExportKind};

compiler/rustc_codegen_ssa/src/back/metadata.rs

@@ -16,6 +16,7 @@ use rustc_data_structures::owned_slice::{try_slice_owned, OwnedSlice};
 use rustc_metadata::creader::MetadataLoader;
 use rustc_metadata::fs::METADATA_FILENAME;
 use rustc_metadata::EncodedMetadata;
+use rustc_middle::bug;
 use rustc_session::Session;
 use rustc_span::sym;
 use rustc_target::abi::Endian;

compiler/rustc_codegen_ssa/src/back/symbol_export.rs

@@ -6,6 +6,7 @@ use rustc_ast::expand::allocator::{ALLOCATOR_METHODS, NO_ALLOC_SHIM_IS_UNSTABLE}
 use rustc_data_structures::unord::UnordMap;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, LocalDefId, LOCAL_CRATE};
+use rustc_middle::bug;
 use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc_middle::middle::exported_symbols::{
     metadata_symbol_name, ExportedSymbol, SymbolExportInfo, SymbolExportKind, SymbolExportLevel,

compiler/rustc_codegen_ssa/src/back/write.rs

@@ -26,6 +26,7 @@ use rustc_incremental::{
 };
 use rustc_metadata::fs::copy_to_stdout;
 use rustc_metadata::EncodedMetadata;
+use rustc_middle::bug;
 use rustc_middle::dep_graph::{WorkProduct, WorkProductId};
 use rustc_middle::middle::exported_symbols::SymbolExportInfo;
 use rustc_middle::ty::TyCtxt;

compiler/rustc_codegen_ssa/src/base.rs

@@ -24,6 +24,7 @@ use rustc_hir as hir;
 use rustc_hir::def_id::{DefId, LOCAL_CRATE};
 use rustc_hir::lang_items::LangItem;
 use rustc_metadata::EncodedMetadata;
+use rustc_middle::bug;
 use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrs;
 use rustc_middle::middle::debugger_visualizer::{DebuggerVisualizerFile, DebuggerVisualizerType};
 use rustc_middle::middle::exported_symbols;

compiler/rustc_codegen_ssa/src/common.rs

@@ -4,6 +4,7 @@ use rustc_hir::LangItem;
 use rustc_middle::mir;
 use rustc_middle::ty::Instance;
 use rustc_middle::ty::{self, layout::TyAndLayout, TyCtxt};
+use rustc_middle::{bug, span_bug};
 use rustc_span::Span;
 
 use crate::traits::*;

compiler/rustc_codegen_ssa/src/debuginfo/type_names.rs

@@ -16,6 +16,7 @@ use rustc_data_structures::stable_hasher::{Hash64, HashStable, StableHasher};
 use rustc_hir::def_id::DefId;
 use rustc_hir::definitions::{DefPathData, DefPathDataName, DisambiguatedDefPathData};
 use rustc_hir::{CoroutineDesugaring, CoroutineKind, CoroutineSource, Mutability};
+use rustc_middle::bug;
 use rustc_middle::ty::layout::{IntegerExt, TyAndLayout};
 use rustc_middle::ty::{self, ExistentialProjection, ParamEnv, Ty, TyCtxt};
 use rustc_middle::ty::{GenericArgKind, GenericArgsRef};

compiler/rustc_codegen_ssa/src/lib.rs

@@ -18,8 +18,6 @@
 
 #[macro_use]
 extern crate tracing;
-#[macro_use]
-extern crate rustc_middle;
 
 use rustc_ast as ast;
 use rustc_data_structures::fx::FxHashSet;

compiler/rustc_codegen_ssa/src/meth.rs

@@ -1,5 +1,6 @@
 use crate::traits::*;
 
+use rustc_middle::bug;
 use rustc_middle::ty::{self, GenericArgKind, Ty};
 use rustc_session::config::Lto;
 use rustc_symbol_mangling::typeid_for_trait_ref;

compiler/rustc_codegen_ssa/src/mir/analyze.rs

@@ -10,6 +10,7 @@ use rustc_middle::mir::traversal;
 use rustc_middle::mir::visit::{MutatingUseContext, NonMutatingUseContext, PlaceContext, Visitor};
 use rustc_middle::mir::{self, DefLocation, Location, TerminatorKind};
 use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf};
+use rustc_middle::{bug, span_bug};
 
 pub fn non_ssa_locals<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
     fx: &FunctionCx<'a, 'tcx, Bx>,

compiler/rustc_codegen_ssa/src/mir/block.rs

@@ -17,6 +17,7 @@ use rustc_middle::mir::{self, AssertKind, BasicBlock, SwitchTargets, UnwindTermi
 use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf, ValidityRequirement};
 use rustc_middle::ty::print::{with_no_trimmed_paths, with_no_visible_paths};
 use rustc_middle::ty::{self, Instance, Ty};
+use rustc_middle::{bug, span_bug};
 use rustc_monomorphize::is_call_from_compiler_builtins_to_upstream_monomorphization;
 use rustc_session::config::OptLevel;
 use rustc_span::{source_map::Spanned, sym, Span};

compiler/rustc_codegen_ssa/src/mir/constant.rs

@@ -5,6 +5,7 @@ use rustc_middle::mir;
 use rustc_middle::mir::interpret::ErrorHandled;
 use rustc_middle::ty::layout::HasTyCtxt;
 use rustc_middle::ty::{self, Ty};
+use rustc_middle::{bug, span_bug};
 use rustc_target::abi::Abi;
 
 use super::FunctionCx;

compiler/rustc_codegen_ssa/src/mir/debuginfo.rs

@@ -1,6 +1,7 @@
 use crate::traits::*;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_index::IndexVec;
+use rustc_middle::bug;
 use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc_middle::mir;
 use rustc_middle::ty;

compiler/rustc_codegen_ssa/src/mir/intrinsic.rs

@@ -9,6 +9,7 @@ use crate::traits::*;
 use crate::MemFlags;
 
 use rustc_middle::ty::{self, Ty, TyCtxt};
+use rustc_middle::{bug, span_bug};
 use rustc_session::config::OptLevel;
 use rustc_span::{sym, Span};
 use rustc_target::abi::{

compiler/rustc_codegen_ssa/src/mir/mod.rs

@@ -8,6 +8,7 @@ use rustc_middle::mir::traversal;
 use rustc_middle::mir::UnwindTerminateReason;
 use rustc_middle::ty::layout::{FnAbiOf, HasTyCtxt, TyAndLayout};
 use rustc_middle::ty::{self, Instance, Ty, TyCtxt, TypeFoldable, TypeVisitableExt};
+use rustc_middle::{bug, span_bug};
 use rustc_target::abi::call::{FnAbi, PassMode};
 
 use std::iter;

compiler/rustc_codegen_ssa/src/mir/operand.rs

@@ -5,6 +5,7 @@ use crate::size_of_val;
 use crate::traits::*;
 use crate::MemFlags;
 
+use rustc_middle::bug;
 use rustc_middle::mir::interpret::{alloc_range, Pointer, Scalar};
 use rustc_middle::mir::{self, ConstValue};
 use rustc_middle::ty::layout::{LayoutOf, TyAndLayout};

compiler/rustc_codegen_ssa/src/mir/place.rs

@@ -5,6 +5,7 @@ use crate::common::IntPredicate;
 use crate::size_of_val;
 use crate::traits::*;
 
+use rustc_middle::bug;
 use rustc_middle::mir;
 use rustc_middle::mir::tcx::PlaceTy;
 use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf, TyAndLayout};

compiler/rustc_codegen_ssa/src/mir/rvalue.rs

@@ -8,11 +8,11 @@ use crate::traits::*;
 use crate::MemFlags;
 
 use rustc_hir as hir;
-use rustc_middle::mir;
-use rustc_middle::mir::{AggregateKind, Operand};
+use rustc_middle::mir::{self, AggregateKind, Operand};
 use rustc_middle::ty::cast::{CastTy, IntTy};
 use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf, TyAndLayout};
 use rustc_middle::ty::{self, adjustment::PointerCoercion, Instance, Ty, TyCtxt};
+use rustc_middle::{bug, span_bug};
 use rustc_session::config::OptLevel;
 use rustc_span::{Span, DUMMY_SP};
 use rustc_target::abi::{self, FIRST_VARIANT};

compiler/rustc_codegen_ssa/src/mir/statement.rs

@@ -1,5 +1,5 @@
-use rustc_middle::mir;
-use rustc_middle::mir::NonDivergingIntrinsic;
+use rustc_middle::mir::{self, NonDivergingIntrinsic};
+use rustc_middle::span_bug;
 use rustc_session::config::OptLevel;
 
 use super::FunctionCx;

compiler/rustc_codegen_ssa/src/mono_item.rs

@@ -5,6 +5,7 @@ use rustc_hir as hir;
 use rustc_middle::mir::interpret::ErrorHandled;
 use rustc_middle::mir::mono::MonoItem;
 use rustc_middle::mir::mono::{Linkage, Visibility};
+use rustc_middle::span_bug;
 use rustc_middle::ty;
 use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf};
 use rustc_middle::ty::Instance;

compiler/rustc_codegen_ssa/src/size_of_val.rs

@@ -5,6 +5,7 @@ use crate::common::IntPredicate;
 use crate::meth;
 use crate::traits::*;
 use rustc_hir::LangItem;
+use rustc_middle::bug;
 use rustc_middle::ty::print::{with_no_trimmed_paths, with_no_visible_paths};
 use rustc_middle::ty::{self, Ty};
 use rustc_target::abi::WrappingRange;

compiler/rustc_codegen_ssa/src/target_features.rs

@@ -8,6 +8,7 @@ use rustc_hir::def::DefKind;
 use rustc_hir::def_id::DefId;
 use rustc_hir::def_id::LocalDefId;
 use rustc_hir::def_id::LOCAL_CRATE;
+use rustc_middle::bug;
 use rustc_middle::query::Providers;
 use rustc_middle::ty::TyCtxt;
 use rustc_session::parse::feature_err;

compiler/rustc_codegen_ssa/src/traits/type_.rs

@@ -3,6 +3,7 @@ use super::Backend;
 use super::HasCodegen;
 use crate::common::TypeKind;
 use crate::mir::place::PlaceRef;
+use rustc_middle::bug;
 use rustc_middle::ty::layout::TyAndLayout;
 use rustc_middle::ty::{self, Ty};
 use rustc_target::abi::call::{ArgAbi, CastTarget, FnAbi, Reg};

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;
 

compiler/rustc_incremental/src/lib.rs

@@ -6,8 +6,6 @@
 #![feature(rustdoc_internals)]
 #![allow(internal_features)]
 
-#[macro_use]
-extern crate rustc_middle;
 #[macro_use]
 extern crate tracing;
 

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};

compiler/rustc_lint/src/array_into_iter.rs

@@ -3,6 +3,7 @@ use crate::{
     LateContext, LateLintPass, LintContext,
 };
 use rustc_hir as hir;
+use rustc_middle::bug;
 use rustc_middle::ty;
 use rustc_middle::ty::adjustment::{Adjust, Adjustment};
 use rustc_session::lint::FutureIncompatibilityReason;

compiler/rustc_lint/src/builtin.rs

@@ -51,6 +51,7 @@ use rustc_hir::def::{DefKind, Res};
 use rustc_hir::def_id::{DefId, LocalDefId, CRATE_DEF_ID};
 use rustc_hir::intravisit::FnKind as HirFnKind;
 use rustc_hir::{Body, FnDecl, GenericParamKind, Node, PatKind, PredicateOrigin};
+use rustc_middle::bug;
 use rustc_middle::lint::in_external_macro;
 use rustc_middle::ty::layout::LayoutOf;
 use rustc_middle::ty::print::with_no_trimmed_paths;

compiler/rustc_lint/src/context.rs

@@ -27,6 +27,7 @@ use rustc_hir as hir;
 use rustc_hir::def::Res;
 use rustc_hir::def_id::{CrateNum, DefId};
 use rustc_hir::definitions::{DefPathData, DisambiguatedDefPathData};
+use rustc_middle::bug;
 use rustc_middle::middle::privacy::EffectiveVisibilities;
 use rustc_middle::ty::layout::{LayoutError, LayoutOfHelpers, TyAndLayout};
 use rustc_middle::ty::print::{with_no_trimmed_paths, PrintError};

compiler/rustc_lint/src/context/diagnostics/check_cfg.rs

@@ -1,4 +1,5 @@
 use rustc_errors::{Applicability, Diag};
+use rustc_middle::bug;
 use rustc_session::{config::ExpectedValues, Session};
 use rustc_span::edit_distance::find_best_match_for_name;
 use rustc_span::{sym, Span, Symbol};

compiler/rustc_lint/src/levels.rs

@@ -22,6 +22,7 @@ use rustc_hir as hir;
 use rustc_hir::intravisit::{self, Visitor};
 use rustc_hir::HirId;
 use rustc_index::IndexVec;
+use rustc_middle::bug;
 use rustc_middle::hir::nested_filter;
 use rustc_middle::lint::{
     lint_level, reveal_actual_level, LevelAndSource, LintExpectation, LintLevelSource,

compiler/rustc_lint/src/lib.rs

@@ -39,8 +39,6 @@
 #![feature(rustc_attrs)]
 #![allow(internal_features)]
 
-#[macro_use]
-extern crate rustc_middle;
 #[macro_use]
 extern crate tracing;
 

compiler/rustc_lint/src/non_fmt_panic.rs

@@ -4,6 +4,7 @@ use rustc_ast as ast;
 use rustc_errors::Applicability;
 use rustc_hir as hir;
 use rustc_infer::infer::TyCtxtInferExt;
+use rustc_middle::bug;
 use rustc_middle::lint::in_external_macro;
 use rustc_middle::ty;
 use rustc_parse_format::{ParseMode, Parser, Piece};

compiler/rustc_lint/src/types.rs

@@ -17,6 +17,7 @@ use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::DiagMessage;
 use rustc_hir as hir;
 use rustc_hir::{is_range_literal, Expr, ExprKind, Node};
+use rustc_middle::bug;
 use rustc_middle::ty::layout::{IntegerExt, LayoutOf, SizeSkeleton};
 use rustc_middle::ty::GenericArgsRef;
 use rustc_middle::ty::{

compiler/rustc_mir_dataflow/src/elaborate_drops.rs

@@ -2,6 +2,7 @@ use rustc_hir::lang_items::LangItem;
 use rustc_index::Idx;
 use rustc_middle::mir::patch::MirPatch;
 use rustc_middle::mir::*;
+use rustc_middle::span_bug;
 use rustc_middle::traits::Reveal;
 use rustc_middle::ty::util::IntTypeExt;
 use rustc_middle::ty::GenericArgsRef;

compiler/rustc_mir_dataflow/src/framework/engine.rs

@@ -13,6 +13,7 @@ use rustc_data_structures::work_queue::WorkQueue;
 use rustc_graphviz as dot;
 use rustc_hir::def_id::DefId;
 use rustc_index::{Idx, IndexVec};
+use rustc_middle::bug;
 use rustc_middle::mir::{self, traversal, BasicBlock};
 use rustc_middle::mir::{create_dump_file, dump_enabled};
 use rustc_middle::ty::print::with_no_trimmed_paths;

compiler/rustc_mir_dataflow/src/impls/initialized.rs

@@ -1,5 +1,6 @@
 use rustc_index::bit_set::{BitSet, ChunkedBitSet};
 use rustc_index::Idx;
+use rustc_middle::bug;
 use rustc_middle::mir::{self, Body, CallReturnPlaces, Location, TerminatorEdges};
 use rustc_middle::ty::{self, TyCtxt};
 

compiler/rustc_mir_dataflow/src/lib.rs

@@ -6,8 +6,6 @@
 
 #[macro_use]
 extern crate tracing;
-#[macro_use]
-extern crate rustc_middle;
 
 use rustc_middle::ty;
 

compiler/rustc_mir_dataflow/src/move_paths/builder.rs

@@ -2,6 +2,7 @@ use rustc_index::IndexVec;
 use rustc_middle::mir::tcx::{PlaceTy, RvalueInitializationState};
 use rustc_middle::mir::*;
 use rustc_middle::ty::{self, Ty, TyCtxt, TypeVisitableExt};
+use rustc_middle::{bug, span_bug};
 use smallvec::{smallvec, SmallVec};
 
 use std::mem;

compiler/rustc_mir_dataflow/src/value_analysis.rs

@@ -40,6 +40,7 @@ use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::stack::ensure_sufficient_stack;
 use rustc_index::bit_set::BitSet;
 use rustc_index::{IndexSlice, IndexVec};
+use rustc_middle::bug;
 use rustc_middle::mir::visit::{MutatingUseContext, PlaceContext, Visitor};
 use rustc_middle::mir::*;
 use rustc_middle::ty::{self, Ty, TyCtxt};

compiler/rustc_monomorphize/src/collector.rs

@@ -228,6 +228,7 @@ use rustc_middle::ty::{
     TypeVisitableExt, VtblEntry,
 };
 use rustc_middle::ty::{GenericArgKind, GenericArgs};
+use rustc_middle::{bug, span_bug};
 use rustc_session::config::EntryFnType;
 use rustc_session::Limit;
 use rustc_span::source_map::{dummy_spanned, respan, Spanned};

compiler/rustc_monomorphize/src/lib.rs

@@ -4,10 +4,9 @@
 
 #[macro_use]
 extern crate tracing;
-#[macro_use]
-extern crate rustc_middle;
 
 use rustc_hir::lang_items::LangItem;
+use rustc_middle::bug;
 use rustc_middle::query::{Providers, TyCtxtAt};
 use rustc_middle::traits;
 use rustc_middle::ty::adjustment::CustomCoerceUnsized;

compiler/rustc_monomorphize/src/partitioning.rs

@@ -103,6 +103,7 @@ use rustc_data_structures::sync;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::{DefId, DefIdSet, LOCAL_CRATE};
 use rustc_hir::definitions::DefPathDataName;
+use rustc_middle::bug;
 use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc_middle::middle::exported_symbols::{SymbolExportInfo, SymbolExportLevel};
 use rustc_middle::mir::mono::{

compiler/rustc_passes/src/abi_test.rs

@@ -1,6 +1,7 @@
 use rustc_ast::Attribute;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::LocalDefId;
+use rustc_middle::span_bug;
 use rustc_middle::ty::layout::{FnAbiError, LayoutError};
 use rustc_middle::ty::{self, GenericArgs, Instance, Ty, TyCtxt};
 use rustc_span::source_map::Spanned;

compiler/rustc_passes/src/check_attr.rs

@@ -19,6 +19,7 @@ use rustc_hir::{
 };
 use rustc_hir::{MethodKind, Target, Unsafety};
 use rustc_macros::LintDiagnostic;
+use rustc_middle::bug;
 use rustc_middle::hir::nested_filter;
 use rustc_middle::middle::resolve_bound_vars::ObjectLifetimeDefault;
 use rustc_middle::query::Providers;

compiler/rustc_passes/src/check_const.rs

@@ -13,6 +13,7 @@ use rustc_hir::def_id::{LocalDefId, LocalModDefId};
 use rustc_hir::intravisit::{self, Visitor};
 use rustc_middle::hir::nested_filter;
 use rustc_middle::query::Providers;
+use rustc_middle::span_bug;
 use rustc_middle::ty::TyCtxt;
 use rustc_session::parse::feature_err;
 use rustc_span::{sym, Span, Symbol};

compiler/rustc_passes/src/dead.rs

@@ -16,6 +16,7 @@ use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc_middle::middle::privacy::Level;
 use rustc_middle::query::Providers;
 use rustc_middle::ty::{self, TyCtxt};
+use rustc_middle::{bug, span_bug};
 use rustc_session::lint;
 use rustc_session::lint::builtin::DEAD_CODE;
 use rustc_span::symbol::{sym, Symbol};

compiler/rustc_passes/src/layout_test.rs

@@ -1,6 +1,7 @@
 use rustc_ast::Attribute;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::LocalDefId;
+use rustc_middle::span_bug;
 use rustc_middle::ty::layout::{HasParamEnv, HasTyCtxt, LayoutError, LayoutOfHelpers, TyAndLayout};
 use rustc_middle::ty::{self, ParamEnv, Ty, TyCtxt};
 use rustc_span::source_map::Spanned;

compiler/rustc_passes/src/lib.rs

@@ -12,8 +12,6 @@
 #![feature(map_try_insert)]
 #![feature(try_blocks)]
 
-#[macro_use]
-extern crate rustc_middle;
 #[macro_use]
 extern crate tracing;
 

compiler/rustc_passes/src/liveness.rs

@@ -94,6 +94,7 @@ use rustc_hir::intravisit::{self, Visitor};
 use rustc_hir::{Expr, HirId, HirIdMap, HirIdSet};
 use rustc_index::IndexVec;
 use rustc_middle::query::Providers;
+use rustc_middle::span_bug;
 use rustc_middle::ty::{self, RootVariableMinCaptureList, Ty, TyCtxt};
 use rustc_session::lint;
 use rustc_span::symbol::{kw, sym, Symbol};

compiler/rustc_passes/src/loops.rs

@@ -6,6 +6,7 @@ use rustc_hir::intravisit::{self, Visitor};
 use rustc_hir::{Destination, Node};
 use rustc_middle::hir::nested_filter;
 use rustc_middle::query::Providers;
+use rustc_middle::span_bug;
 use rustc_middle::ty::TyCtxt;
 use rustc_session::Session;
 use rustc_span::hygiene::DesugaringKind;

compiler/rustc_passes/src/reachable.rs

@@ -17,6 +17,7 @@ use rustc_hir::def::{DefKind, Res};
 use rustc_hir::def_id::{DefId, LocalDefId};
 use rustc_hir::intravisit::{self, Visitor};
 use rustc_hir::Node;
+use rustc_middle::bug;
 use rustc_middle::middle::codegen_fn_attrs::{CodegenFnAttrFlags, CodegenFnAttrs};
 use rustc_middle::middle::privacy::{self, Level};
 use rustc_middle::mir::interpret::{ConstAllocation, GlobalAlloc};

compiler/rustc_pattern_analysis/src/lib.rs

@@ -16,9 +16,6 @@ pub mod usefulness;
 
 #[macro_use]
 extern crate tracing;
-#[cfg(feature = "rustc")]
-#[macro_use]
-extern crate rustc_middle;
 
 #[cfg(feature = "rustc")]
 rustc_fluent_macro::fluent_messages! { "../messages.ftl" }

compiler/rustc_pattern_analysis/src/rustc.rs

@@ -11,6 +11,7 @@ use rustc_middle::mir::{self, Const};
 use rustc_middle::thir::{self, FieldPat, Pat, PatKind, PatRange, PatRangeBoundary};
 use rustc_middle::ty::layout::IntegerExt;
 use rustc_middle::ty::{self, FieldDef, OpaqueTypeKey, Ty, TyCtxt, TypeVisitableExt, VariantDef};
+use rustc_middle::{bug, span_bug};
 use rustc_session::lint;
 use rustc_span::{ErrorGuaranteed, Span, DUMMY_SP};
 use rustc_target::abi::{FieldIdx, Integer, VariantIdx, FIRST_VARIANT};

compiler/rustc_symbol_mangling/src/legacy.rs

@@ -1,6 +1,7 @@
 use rustc_data_structures::stable_hasher::{Hash64, HashStable, StableHasher};
 use rustc_hir::def_id::CrateNum;
 use rustc_hir::definitions::{DefPathData, DisambiguatedDefPathData};
+use rustc_middle::bug;
 use rustc_middle::ty::print::{PrettyPrinter, Print, PrintError, Printer};
 use rustc_middle::ty::{self, Instance, ReifyReason, Ty, TyCtxt, TypeVisitableExt};
 use rustc_middle::ty::{GenericArg, GenericArgKind};

compiler/rustc_symbol_mangling/src/lib.rs

@@ -93,9 +93,6 @@
 #![feature(let_chains)]
 #![allow(internal_features)]
 
-#[macro_use]
-extern crate rustc_middle;
-
 #[macro_use]
 extern crate tracing;
 

compiler/rustc_symbol_mangling/src/v0.rs

@@ -5,6 +5,7 @@ use rustc_hir as hir;
 use rustc_hir::def::CtorKind;
 use rustc_hir::def_id::{CrateNum, DefId};
 use rustc_hir::definitions::{DefPathData, DisambiguatedDefPathData};
+use rustc_middle::bug;
 use rustc_middle::ty::layout::IntegerExt;
 use rustc_middle::ty::print::{Print, PrintError, Printer};
 use rustc_middle::ty::{

compiler/rustc_traits/src/codegen.rs

@@ -5,6 +5,7 @@
 
 use rustc_infer::infer::TyCtxtInferExt;
 use rustc_infer::traits::{FulfillmentErrorCode, TraitEngineExt as _};
+use rustc_middle::bug;
 use rustc_middle::traits::CodegenObligationError;
 use rustc_middle::ty::{self, TyCtxt, TypeVisitableExt};
 use rustc_trait_selection::traits::error_reporting::TypeErrCtxtExt;

compiler/rustc_traits/src/dropck_outlives.rs

@@ -2,6 +2,7 @@ use rustc_data_structures::fx::FxHashSet;
 use rustc_hir::def_id::DefId;
 use rustc_infer::infer::canonical::{Canonical, QueryResponse};
 use rustc_infer::infer::TyCtxtInferExt;
+use rustc_middle::bug;
 use rustc_middle::query::Providers;
 use rustc_middle::traits::query::{DropckConstraint, DropckOutlivesResult};
 use rustc_middle::ty::GenericArgs;

compiler/rustc_traits/src/lib.rs

@@ -4,8 +4,6 @@
 
 #[macro_use]
 extern crate tracing;
-#[macro_use]
-extern crate rustc_middle;
 
 mod codegen;
 mod dropck_outlives;