Remove extern crate rustc_middle from rustc_trait_selection.

compiler/rustc_trait_selection/src/traits/coherence.rs

@@ -20,6 +20,7 @@ use rustc_hir::def::DefKind;
 use rustc_hir::def_id::DefId;
 use rustc_infer::infer::{DefineOpaqueTypes, InferCtxt, TyCtxtInferExt};
 use rustc_infer::traits::{util, FulfillmentErrorCode};
+use rustc_middle::bug;
 use rustc_middle::traits::query::NoSolution;
 use rustc_middle::traits::solve::{CandidateSource, Certainty, Goal};
 use rustc_middle::traits::specialization_graph::OverlapMode;

compiler/rustc_trait_selection/src/traits/const_evaluatable.rs

@@ -11,6 +11,7 @@
 
 use rustc_hir::def::DefKind;
 use rustc_infer::infer::InferCtxt;
+use rustc_middle::bug;
 use rustc_middle::mir::interpret::ErrorHandled;
 use rustc_middle::traits::ObligationCause;
 use rustc_middle::ty::abstract_const::NotConstEvaluatable;

compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs

@@ -10,6 +10,7 @@ use rustc_errors::{codes::*, struct_span_code_err, ErrorGuaranteed};
 use rustc_hir as hir;
 use rustc_hir::def_id::{DefId, LocalDefId};
 use rustc_macros::{extension, LintDiagnostic};
+use rustc_middle::bug;
 use rustc_middle::ty::print::PrintTraitRefExt as _;
 use rustc_middle::ty::GenericArgsRef;
 use rustc_middle::ty::{self, GenericParamDefKind, TyCtxt};

compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs

@@ -34,6 +34,7 @@ use rustc_middle::ty::{
     InferTy, IsSuggestable, ToPredicate, Ty, TyCtxt, TypeFoldable, TypeFolder, TypeSuperFoldable,
     TypeVisitableExt, TypeckResults,
 };
+use rustc_middle::{bug, span_bug};
 use rustc_span::def_id::LocalDefId;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::{BytePos, DesugaringKind, ExpnKind, MacroKind, Span, DUMMY_SP};

compiler/rustc_trait_selection/src/traits/error_reporting/type_err_ctxt_ext.rs

@@ -45,6 +45,7 @@ use rustc_middle::ty::{
     self, SubtypePredicate, ToPolyTraitRef, ToPredicate, TraitRef, Ty, TyCtxt, TypeFoldable,
     TypeVisitable, TypeVisitableExt,
 };
+use rustc_middle::{bug, span_bug};
 use rustc_session::config::DumpSolverProofTree;
 use rustc_session::Limit;
 use rustc_span::def_id::LOCAL_CRATE;

compiler/rustc_trait_selection/src/traits/fulfill.rs

@@ -8,6 +8,7 @@ use rustc_data_structures::obligation_forest::{ObligationForest, ObligationProce
 use rustc_infer::infer::DefineOpaqueTypes;
 use rustc_infer::traits::ProjectionCacheKey;
 use rustc_infer::traits::{PolyTraitObligation, SelectionError, TraitEngine};
+use rustc_middle::bug;
 use rustc_middle::mir::interpret::ErrorHandled;
 use rustc_middle::ty::abstract_const::NotConstEvaluatable;
 use rustc_middle::ty::error::{ExpectedFound, TypeError};

compiler/rustc_trait_selection/src/traits/mod.rs

@@ -31,6 +31,7 @@ use crate::traits::error_reporting::TypeErrCtxtExt as _;
 use crate::traits::query::evaluate_obligation::InferCtxtExt as _;
 use rustc_errors::ErrorGuaranteed;
 use rustc_middle::query::Providers;
+use rustc_middle::span_bug;
 use rustc_middle::ty::fold::TypeFoldable;
 use rustc_middle::ty::visit::{TypeVisitable, TypeVisitableExt};
 use rustc_middle::ty::{self, ToPredicate, Ty, TyCtxt, TypeFolder, TypeSuperVisitable};

compiler/rustc_trait_selection/src/traits/outlives_bounds.rs

@@ -5,6 +5,7 @@ use rustc_infer::infer::resolve::OpportunisticRegionResolver;
 use rustc_infer::infer::InferOk;
 use rustc_macros::extension;
 use rustc_middle::infer::canonical::{OriginalQueryValues, QueryRegionConstraints};
+use rustc_middle::span_bug;
 use rustc_middle::ty::{self, ParamEnv, Ty, TypeFolder, TypeVisitableExt};
 use rustc_span::def_id::LocalDefId;
 

compiler/rustc_trait_selection/src/traits/project.rs

@@ -17,6 +17,7 @@ use rustc_infer::traits::ObligationCauseCode;
 use rustc_middle::traits::BuiltinImplSource;
 use rustc_middle::traits::ImplSource;
 use rustc_middle::traits::ImplSourceUserDefinedData;
+use rustc_middle::{bug, span_bug};
 
 use crate::errors::InherentProjectionNormalizationOverflow;
 use crate::infer::{BoundRegionConversionTime, InferOk};

compiler/rustc_trait_selection/src/traits/query/evaluate_obligation.rs

@@ -1,4 +1,5 @@
 use rustc_macros::extension;
+use rustc_middle::span_bug;
 
 use crate::infer::canonical::OriginalQueryValues;
 use crate::infer::InferCtxt;

compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs

@@ -16,6 +16,7 @@ use rustc_infer::traits::ObligationCause;
 use rustc_infer::traits::{Obligation, PolyTraitObligation, SelectionError};
 use rustc_middle::ty::fast_reject::{DeepRejectCtxt, TreatParams};
 use rustc_middle::ty::{self, ToPolyTraitRef, Ty, TypeVisitableExt};
+use rustc_middle::{bug, span_bug};
 
 use crate::traits;
 use crate::traits::query::evaluate_obligation::InferCtxtExt;

compiler/rustc_trait_selection/src/traits/select/confirmation.rs

@@ -17,6 +17,7 @@ use rustc_middle::ty::{
     self, GenericArgs, GenericArgsRef, GenericParamDefKind, ToPolyTraitRef, ToPredicate,
     TraitPredicate, Ty, TyCtxt,
 };
+use rustc_middle::{bug, span_bug};
 use rustc_span::def_id::DefId;
 
 use crate::traits::normalize::{normalize_with_depth, normalize_with_depth_to};

compiler/rustc_trait_selection/src/traits/select/mod.rs

@@ -36,6 +36,7 @@ use rustc_infer::infer::BoundRegionConversionTime;
 use rustc_infer::infer::BoundRegionConversionTime::HigherRankedType;
 use rustc_infer::infer::DefineOpaqueTypes;
 use rustc_infer::traits::TraitObligation;
+use rustc_middle::bug;
 use rustc_middle::dep_graph::dep_kinds;
 use rustc_middle::dep_graph::DepNodeIndex;
 use rustc_middle::mir::interpret::ErrorHandled;

compiler/rustc_trait_selection/src/traits/specialize/mod.rs

@@ -23,6 +23,7 @@ use crate::traits::{
 use rustc_data_structures::fx::FxIndexSet;
 use rustc_errors::{codes::*, DelayDm, Diag, EmissionGuarantee};
 use rustc_hir::def_id::{DefId, LocalDefId};
+use rustc_middle::bug;
 use rustc_middle::ty::{self, ImplSubject, Ty, TyCtxt, TypeVisitableExt};
 use rustc_middle::ty::{GenericArgs, GenericArgsRef};
 use rustc_session::lint::builtin::COHERENCE_LEAK_CHECK;

compiler/rustc_trait_selection/src/traits/specialize/specialization_graph.rs

@@ -4,6 +4,7 @@ use crate::traits;
 use rustc_errors::ErrorGuaranteed;
 use rustc_hir::def_id::DefId;
 use rustc_macros::extension;
+use rustc_middle::bug;
 use rustc_middle::ty::fast_reject::{self, SimplifiedType, TreatParams};
 use rustc_middle::ty::{self, TyCtxt, TypeVisitableExt};
 

compiler/rustc_trait_selection/src/traits/structural_match.rs

@@ -1,5 +1,6 @@
 use rustc_data_structures::fx::FxHashSet;
 use rustc_hir as hir;
+use rustc_middle::bug;
 use rustc_middle::ty::{self, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable, TypeVisitor};
 use std::ops::ControlFlow;
 

compiler/rustc_trait_selection/src/traits/util.rs

@@ -6,6 +6,7 @@ use rustc_data_structures::fx::{FxHashSet, FxIndexMap};
 use rustc_errors::Diag;
 use rustc_hir::def_id::DefId;
 use rustc_infer::infer::{InferCtxt, InferOk};
+use rustc_middle::bug;
 use rustc_middle::ty::GenericArgsRef;
 use rustc_middle::ty::{self, ImplSubject, ToPredicate, Ty, TyCtxt, TypeVisitableExt};
 use rustc_middle::ty::{TypeFoldable, TypeFolder, TypeSuperFoldable};

compiler/rustc_trait_selection/src/traits/vtable.rs

@@ -4,6 +4,7 @@ use rustc_hir::def_id::DefId;
 use rustc_hir::lang_items::LangItem;
 use rustc_infer::traits::util::PredicateSet;
 use rustc_infer::traits::ImplSource;
+use rustc_middle::bug;
 use rustc_middle::query::Providers;
 use rustc_middle::traits::BuiltinImplSource;
 use rustc_middle::ty::visit::TypeVisitableExt;

compiler/rustc_trait_selection/src/traits/wf.rs

@@ -3,6 +3,7 @@ use crate::traits;
 use rustc_hir as hir;
 use rustc_hir::lang_items::LangItem;
 use rustc_infer::traits::ObligationCauseCode;
+use rustc_middle::bug;
 use rustc_middle::ty::{
     self, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable, TypeVisitableExt, TypeVisitor,
 };