Rollup merge of #129774 - nnethercote:rm-extern-crate-tracing-remainder, r=GuillaumeGomez

Remove `#[macro_use] extern crate tracing` from rustdoc and rustfmt

A follow-up to #129767 and earlier PRs doing this for `rustc_*` crates.

r? ```@GuillaumeGomez```

Author: matthiaskrgr

src/librustdoc/clean/auto_trait.rs

@@ -7,6 +7,7 @@ use rustc_span::def_id::DefId;
 use rustc_span::symbol::{kw, Symbol};
 use rustc_trait_selection::traits::auto_trait::{self, RegionTarget};
 use thin_vec::ThinVec;
+use tracing::{debug, instrument};
 
 use crate::clean::{
     self, clean_generic_param_def, clean_middle_ty, clean_predicate,

src/librustdoc/clean/blanket_impl.rs

@@ -6,6 +6,7 @@ use rustc_span::def_id::DefId;
 use rustc_span::DUMMY_SP;
 use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt;
 use thin_vec::ThinVec;
+use tracing::{debug, instrument, trace};
 
 use crate::clean;
 use crate::clean::{

src/librustdoc/clean/inline.rs

@@ -14,6 +14,7 @@ use rustc_span::def_id::LOCAL_CRATE;
 use rustc_span::hygiene::MacroKind;
 use rustc_span::symbol::{sym, Symbol};
 use thin_vec::{thin_vec, ThinVec};
+use tracing::{debug, trace};
 use {rustc_ast as ast, rustc_hir as hir};
 
 use super::Item;

src/librustdoc/clean/mod.rs

@@ -52,6 +52,7 @@ use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::ExpnKind;
 use rustc_trait_selection::traits::wf::object_region_bounds;
 use thin_vec::ThinVec;
+use tracing::{debug, instrument};
 use utils::*;
 use {rustc_ast as ast, rustc_attr as attr, rustc_hir as hir};
 

src/librustdoc/clean/types.rs

@@ -31,6 +31,7 @@ use rustc_span::{FileName, Loc, DUMMY_SP};
 use rustc_target::abi::VariantIdx;
 use rustc_target::spec::abi::Abi;
 use thin_vec::ThinVec;
+use tracing::{debug, trace};
 use {rustc_ast as ast, rustc_hir as hir};
 
 pub(crate) use self::ItemKind::*;

src/librustdoc/clean/utils.rs

@@ -11,6 +11,7 @@ use rustc_middle::mir;
 use rustc_middle::ty::{self, GenericArgKind, GenericArgsRef, TyCtxt, TypeVisitableExt};
 use rustc_span::symbol::{kw, sym, Symbol};
 use thin_vec::{thin_vec, ThinVec};
+use tracing::{debug, warn};
 use {rustc_ast as ast, rustc_hir as hir};
 
 use crate::clean::auto_trait::synthesize_auto_trait_impls;

src/librustdoc/core.rs

@@ -25,6 +25,7 @@ pub(crate) use rustc_session::config::{Options, UnstableOptions};
 use rustc_session::{lint, Session};
 use rustc_span::symbol::sym;
 use rustc_span::{source_map, Span};
+use tracing::{debug, info};
 
 use crate::clean::inline::build_external_trait;
 use crate::clean::{self, ItemId};

src/librustdoc/doctest.rs

@@ -26,6 +26,7 @@ use rustc_span::symbol::sym;
 use rustc_span::FileName;
 use rustc_target::spec::{Target, TargetTriple};
 use tempfile::{Builder as TempFileBuilder, TempDir};
+use tracing::debug;
 
 use self::rust::HirCollector;
 use crate::config::Options as RustdocOptions;

src/librustdoc/doctest/make.rs

@@ -14,6 +14,7 @@ use rustc_span::edition::Edition;
 use rustc_span::source_map::SourceMap;
 use rustc_span::symbol::sym;
 use rustc_span::FileName;
+use tracing::debug;
 
 use super::GlobalTestOptions;
 use crate::html::markdown::LangString;

src/librustdoc/formats/cache.rs

@@ -4,6 +4,7 @@ use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexSet};
 use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, DefIdSet};
 use rustc_middle::ty::{self, TyCtxt};
 use rustc_span::Symbol;
+use tracing::debug;
 
 use crate::clean::types::ExternalLocation;
 use crate::clean::{self, ExternalCrate, ItemId, PrimitiveType};