Workaround issue #107747

Only required until fix #107803 is merged into stage0 compiler, expected
when beta 1.69.0 is released on 2023-03-09, then this commit can be
reverted.

Author: eggyal

compiler/rustc_hir_analysis/src/variance/mod.rs

@@ -7,8 +7,10 @@ use rustc_arena::DroplessArena;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::{DefId, LocalDefId};
 use rustc_middle::ty::query::Providers;
+#[cfg(not(bootstrap))]
+use rustc_middle::ty::TypeVisitable;
 use rustc_middle::ty::{self, CrateVariancesMap, SubstsRef, Ty, TyCtxt};
-use rustc_middle::ty::{DefIdTree, TypeSuperVisitable, TypeVisitable};
+use rustc_middle::ty::{DefIdTree, TypeSuperVisitable};
 use std::ops::ControlFlow;
 
 /// Defines the `TermsContext` basically houses an arena where we can

compiler/rustc_middle/src/ty/layout.rs

@@ -1120,6 +1120,13 @@ impl From<call::AdjustForForeignAbiError> for FnAbiError<'_> {
 
 impl<'tcx> fmt::Display for FnAbiError<'tcx> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        #[cfg(bootstrap)]
+        match self {
+            Self::Layout(err) => fmt::Display::fmt(err, f),
+            Self::AdjustForForeignAbi(err) => fmt::Display::fmt(err, f),
+        }
+
+        #[cfg(not(bootstrap))]
         match self {
             Self::Layout(err) => err.fmt(f),
             Self::AdjustForForeignAbi(err) => err.fmt(f),

compiler/rustc_middle/src/ty/opaque_types.rs

@@ -1,7 +1,9 @@
 use crate::error::ConstNotUsedTraitAlias;
 use crate::ty::fold::{ir::TypeFolder, TypeSuperFoldable};
 use crate::ty::subst::{GenericArg, GenericArgKind};
-use crate::ty::{self, Ty, TyCtxt, TypeFoldable};
+#[cfg(not(bootstrap))]
+use crate::ty::TypeFoldable;
+use crate::ty::{self, Ty, TyCtxt};
 use rustc_data_structures::fx::FxHashMap;
 use rustc_span::def_id::DefId;
 use rustc_span::Span;

compiler/rustc_trait_selection/src/traits/auto_trait.rs

@@ -9,6 +9,7 @@ use crate::infer::InferCtxt;
 use crate::traits::project::ProjectAndUnifyResult;
 use rustc_middle::mir::interpret::ErrorHandled;
 use rustc_middle::ty::fold::{ir::TypeFolder, TypeSuperFoldable};
+#[cfg(not(bootstrap))]
 use rustc_middle::ty::visit::TypeVisitable;
 use rustc_middle::ty::{ImplPolarity, Region, RegionVid};
 

compiler/rustc_trait_selection/src/traits/structural_match.rs

@@ -1,6 +1,8 @@
 use rustc_data_structures::fx::FxHashSet;
 use rustc_hir as hir;
-use rustc_middle::ty::{self, ir::TypeVisitor, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable};
+#[cfg(not(bootstrap))]
+use rustc_middle::ty::TypeVisitable;
+use rustc_middle::ty::{self, ir::TypeVisitor, Ty, TyCtxt, TypeSuperVisitable};
 use rustc_span::Span;
 use std::ops::ControlFlow;