Remove extern crate rustc_middle from rustc_trait_selection.

compiler/rustc_trait_selection/src/solve/assembly/mod.rs

@@ -4,6 +4,7 @@ use crate::solve::GoalSource;
 use crate::solve::{inspect, EvalCtxt, SolverMode};
 use rustc_hir::def_id::DefId;
 use rustc_infer::traits::query::NoSolution;
+use rustc_middle::bug;
 use rustc_middle::traits::solve::inspect::ProbeKind;
 use rustc_middle::traits::solve::{
     CandidateSource, CanonicalResponse, Certainty, Goal, MaybeCause, QueryResult,

compiler/rustc_trait_selection/src/solve/assembly/structural_traits.rs

@@ -5,6 +5,7 @@ use rustc_hir::LangItem;
 use rustc_hir::{def_id::DefId, Movability, Mutability};
 use rustc_infer::traits::query::NoSolution;
 use rustc_macros::{TypeFoldable, TypeVisitable};
+use rustc_middle::bug;
 use rustc_middle::traits::solve::Goal;
 use rustc_middle::ty::{
     self, ToPredicate, Ty, TyCtxt, TypeFoldable, TypeFolder, TypeSuperFoldable,

compiler/rustc_trait_selection/src/solve/eval_ctxt/canonical.rs

@@ -22,6 +22,7 @@ use rustc_infer::infer::resolve::EagerResolver;
 use rustc_infer::infer::RegionVariableOrigin;
 use rustc_infer::infer::{InferCtxt, InferOk};
 use rustc_infer::traits::solve::NestedNormalizationGoals;
+use rustc_middle::bug;
 use rustc_middle::infer::canonical::Canonical;
 use rustc_middle::traits::query::NoSolution;
 use rustc_middle::traits::solve::{

compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs

@@ -9,6 +9,7 @@ use rustc_infer::traits::query::NoSolution;
 use rustc_infer::traits::solve::{MaybeCause, NestedNormalizationGoals};
 use rustc_infer::traits::ObligationCause;
 use rustc_macros::{extension, HashStable};
+use rustc_middle::bug;
 use rustc_middle::infer::canonical::CanonicalVarInfos;
 use rustc_middle::traits::solve::inspect;
 use rustc_middle::traits::solve::{

compiler/rustc_trait_selection/src/solve/eval_ctxt/select.rs

@@ -8,6 +8,7 @@ use rustc_infer::traits::{
     PolyTraitObligation, Selection, SelectionError, SelectionResult,
 };
 use rustc_macros::extension;
+use rustc_middle::{bug, span_bug};
 use rustc_span::Span;
 
 use crate::solve::inspect::{self, ProofTreeInferCtxtExt};

compiler/rustc_trait_selection/src/solve/fulfill.rs

@@ -9,6 +9,7 @@ use rustc_infer::traits::{
     self, FulfillmentError, FulfillmentErrorCode, MismatchedProjectionTypes, Obligation,
     ObligationCause, ObligationCauseCode, PredicateObligation, SelectionError, TraitEngine,
 };
+use rustc_middle::bug;
 use rustc_middle::ty::error::{ExpectedFound, TypeError};
 use rustc_middle::ty::{self, TyCtxt};
 use rustc_span::symbol::sym;

compiler/rustc_trait_selection/src/solve/inspect/build.rs

@@ -6,6 +6,7 @@
 use std::mem;
 
 use rustc_infer::infer::InferCtxt;
+use rustc_middle::bug;
 use rustc_middle::infer::canonical::CanonicalVarValues;
 use rustc_middle::traits::query::NoSolution;
 use rustc_middle::traits::solve::{

compiler/rustc_trait_selection/src/solve/mod.rs

@@ -17,6 +17,7 @@ use rustc_hir::def_id::DefId;
 use rustc_infer::infer::canonical::{Canonical, CanonicalVarValues};
 use rustc_infer::traits::query::NoSolution;
 use rustc_macros::extension;
+use rustc_middle::bug;
 use rustc_middle::infer::canonical::CanonicalVarInfos;
 use rustc_middle::traits::solve::{
     CanonicalResponse, Certainty, ExternalConstraintsData, Goal, GoalSource, QueryResult, Response,

compiler/rustc_trait_selection/src/solve/normalizes_to/mod.rs

@@ -17,6 +17,7 @@ use rustc_middle::ty::fast_reject::{DeepRejectCtxt, TreatParams};
 use rustc_middle::ty::NormalizesTo;
 use rustc_middle::ty::{self, Ty, TyCtxt};
 use rustc_middle::ty::{ToPredicate, TypeVisitableExt};
+use rustc_middle::{bug, span_bug};
 use rustc_span::{sym, ErrorGuaranteed, DUMMY_SP};
 
 mod anon_const;

compiler/rustc_trait_selection/src/solve/trait_goals.rs

@@ -10,6 +10,7 @@ use rustc_hir::def_id::DefId;
 use rustc_hir::{LangItem, Movability};
 use rustc_infer::traits::query::NoSolution;
 use rustc_infer::traits::solve::MaybeCause;
+use rustc_middle::bug;
 use rustc_middle::traits::solve::inspect::ProbeKind;
 use rustc_middle::traits::solve::{CandidateSource, Certainty, Goal, QueryResult};
 use rustc_middle::traits::{BuiltinImplSource, Reveal};