Remove #[macro_use] extern crate tracing from rustc_const_eval.

Author: nnethercote

compiler/rustc_const_eval/src/const_eval/eval_queries.rs

@@ -1,6 +1,7 @@
 use std::sync::atomic::Ordering::Relaxed;
 
 use either::{Left, Right};
+use tracing::{debug, instrument, trace};
 
 use rustc_hir::def::DefKind;
 use rustc_middle::bug;

compiler/rustc_const_eval/src/const_eval/machine.rs

@@ -21,6 +21,7 @@ use rustc_span::symbol::{sym, Symbol};
 use rustc_span::Span;
 use rustc_target::abi::{Align, Size};
 use rustc_target::spec::abi::Abi as CallAbi;
+use tracing::debug;
 
 use crate::errors::{LongRunning, LongRunningWarn};
 use crate::fluent_generated as fluent;

compiler/rustc_const_eval/src/const_eval/mod.rs

@@ -6,6 +6,7 @@ use rustc_middle::mir::interpret::InterpErrorInfo;
 use rustc_middle::query::{Key, TyCtxtAt};
 use rustc_middle::ty::{self, Ty, TyCtxt};
 use rustc_target::abi::VariantIdx;
+use tracing::instrument;
 
 use crate::interpret::{format_interp_error, InterpCx};
 

compiler/rustc_const_eval/src/const_eval/valtrees.rs

@@ -6,6 +6,7 @@ use rustc_middle::ty::layout::{LayoutCx, LayoutOf, TyAndLayout};
 use rustc_middle::ty::{self, ScalarInt, Ty, TyCtxt};
 use rustc_span::DUMMY_SP;
 use rustc_target::abi::{Abi, VariantIdx};
+use tracing::{debug, instrument, trace};
 
 use super::eval_queries::{mk_eval_cx_to_read_const_val, op_to_const};
 use super::machine::CompileTimeEvalContext;

compiler/rustc_const_eval/src/interpret/cast.rs

@@ -10,6 +10,7 @@ use rustc_middle::ty::{self, FloatTy, Ty};
 use rustc_middle::{bug, span_bug};
 use rustc_target::abi::Integer;
 use rustc_type_ir::TyKind::*;
+use tracing::trace;
 
 use super::{
     err_inval, throw_ub, throw_ub_custom, util::ensure_monomorphic_enough, FnVal, ImmTy, Immediate,

compiler/rustc_const_eval/src/interpret/discriminant.rs

@@ -6,6 +6,7 @@ use rustc_middle::ty::layout::{LayoutOf, PrimitiveExt};
 use rustc_middle::ty::{self, ScalarInt, Ty};
 use rustc_target::abi::{self, TagEncoding};
 use rustc_target::abi::{VariantIdx, Variants};
+use tracing::{instrument, trace};
 
 use super::{
     err_ub, throw_ub, ImmTy, InterpCx, InterpResult, Machine, Readable, Scalar, Writeable,

compiler/rustc_const_eval/src/interpret/eval_context.rs

@@ -2,6 +2,7 @@ use std::cell::Cell;
 use std::{fmt, mem};
 
 use either::{Either, Left, Right};
+use tracing::{debug, info, info_span, instrument, trace};
 
 use hir::CRATE_HIR_ID;
 use rustc_errors::DiagCtxt;

compiler/rustc_const_eval/src/interpret/intern.rs

@@ -23,6 +23,7 @@ use rustc_middle::query::TyCtxtAt;
 use rustc_middle::ty::layout::TyAndLayout;
 use rustc_span::def_id::LocalDefId;
 use rustc_span::sym;
+use tracing::{instrument, trace};
 
 use super::{err_ub, AllocId, Allocation, InterpCx, MPlaceTy, Machine, MemoryKind, PlaceTy};
 use crate::const_eval;

compiler/rustc_const_eval/src/interpret/intrinsics.rs

@@ -14,6 +14,7 @@ use rustc_middle::{
 };
 use rustc_span::symbol::{sym, Symbol};
 use rustc_target::abi::Size;
+use tracing::trace;
 
 use super::{
     err_inval, err_ub_custom, err_unsup_format, memory::MemoryKind, throw_inval, throw_ub_custom,

compiler/rustc_const_eval/src/interpret/memory.rs

@@ -21,6 +21,8 @@ use rustc_middle::mir::display_allocation;
 use rustc_middle::ty::{self, Instance, ParamEnv, Ty, TyCtxt};
 use rustc_target::abi::{Align, HasDataLayout, Size};
 
+use tracing::{debug, instrument, trace};
+
 use crate::fluent_generated as fluent;
 
 use super::{