Auto merge of rust-lang#75514 - gdhuper:gdhuper/replace_log_with_tracing, r=davidtwco

Replaced `log` with `tracing`

## Description

Replaced `log` with `tracing` in the following crates:
- [x] librustc_ast
- [x] librustc_driver
- [x]  librustc_errors
- [x] librustc_expand
- [x]  librustc_hir
- [x]  librustc_incremental
- [x]  librustc_infer
- [x]  librustc_interface
- [x]  librustc_lint
- [x]  librustc_metadata
- [x]  librustc_middle
- [x]  librustc_mir
- [x]  librustc_mir_build
- [x]  librustc_parse
- [x]  librustc_passes
- [x]  librustc_privacy
- [x]  librustc_query_system
- [x]  librustc_resolve
- [x]  librustc_save_analysis
- [x] librustc_session
- [x] librustc_span
- [x] librustc_symbol_mangling
- [x] librustc_target
- [x] librustc_trait_selection
- [x] librustc_traits
- [x] librustc_ty
- [x] librustc_typeck
- [x] compiletest

Fixes: rust-lang#74747

## Checklist:
- [x] Code compiles / builds
- [x] run tidy
- [x] Cleanup any clippy warnings
- [x] Update/add docs

Author: bors

src/librustc_ast/Cargo.toml

@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_serialize = { path = "../librustc_serialize" }
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_span = { path = "../librustc_span" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_index = { path = "../librustc_index" }

src/librustc_ast/util/literal.rs

@@ -10,8 +10,8 @@ use rustc_lexer::unescape::{unescape_byte_literal, unescape_literal, Mode};
 use rustc_span::symbol::{kw, sym, Symbol};
 use rustc_span::Span;
 
-use log::debug;
 use std::ascii;
+use tracing::debug;
 
 pub enum LitError {
     NotLiteral,

src/librustc_driver/Cargo.toml

@@ -12,7 +12,7 @@ crate-type = ["dylib"]
 [dependencies]
 lazy_static = "1.0"
 libc = "0.2"
-log = { package = "tracing", version = "0.1.18", features = ["release_max_level_info"]  }
+tracing = { version = "0.1.18", features = ["release_max_level_info"]  }
 tracing-subscriber = { version = "0.2.10", default-features = false, features = ["fmt", "env-filter", "smallvec", "parking_lot", "ansi"] }
 rustc_middle = { path = "../librustc_middle" }
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }

src/librustc_driver/lib.rs

@@ -9,7 +9,7 @@
 #![recursion_limit = "256"]
 
 #[macro_use]
-extern crate log;
+extern crate tracing;
 #[macro_use]
 extern crate lazy_static;
 
@@ -1224,13 +1224,13 @@ pub fn install_ice_hook() {
 }
 
 /// This allows tools to enable rust logging without having to magically match rustc's
-/// log crate version.
+/// tracing crate version.
 pub fn init_rustc_env_logger() {
     init_env_logger("RUSTC_LOG")
 }
 
 /// This allows tools to enable rust logging without having to magically match rustc's
-/// log crate version. In contrast to `init_rustc_env_logger` it allows you to choose an env var
+/// tracing crate version. In contrast to `init_rustc_env_logger` it allows you to choose an env var
 /// other than `RUSTC_LOG`.
 pub fn init_env_logger(env: &str) {
     // Don't register a dispatcher if there's no filter to print anything

src/librustc_errors/Cargo.toml

@@ -10,7 +10,7 @@ path = "lib.rs"
 doctest = false
 
 [dependencies]
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_serialize = { path = "../librustc_serialize" }
 rustc_span = { path = "../librustc_span" }
 rustc_macros = { path = "../librustc_macros" }

src/librustc_errors/diagnostic_builder.rs

@@ -1,11 +1,11 @@
 use crate::{Applicability, Handler, Level, StashKey};
 use crate::{Diagnostic, DiagnosticId, DiagnosticStyledString};
 
-use log::debug;
 use rustc_span::{MultiSpan, Span};
 use std::fmt::{self, Debug};
 use std::ops::{Deref, DerefMut};
 use std::thread::panicking;
+use tracing::debug;
 
 /// Used for emitting structured error messages and other diagnostic information.
 ///

src/librustc_errors/emitter.rs

@@ -18,7 +18,6 @@ use crate::{
     pluralize, CodeSuggestion, Diagnostic, DiagnosticId, Level, SubDiagnostic, SuggestionStyle,
 };
 
-use log::*;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::sync::Lrc;
 use rustc_span::hygiene::{ExpnKind, MacroKind};
@@ -30,6 +29,7 @@ use std::iter;
 use std::path::Path;
 use termcolor::{Ansi, BufferWriter, ColorChoice, ColorSpec, StandardStream};
 use termcolor::{Buffer, Color, WriteColor};
+use tracing::*;
 
 /// Default column width, used in tests and when terminal dimensions cannot be determined.
 const DEFAULT_COLUMN_WIDTH: usize = 140;

src/librustc_errors/lib.rs

@@ -11,7 +11,7 @@ extern crate rustc_macros;
 
 pub use emitter::ColorConfig;
 
-use log::debug;
+use tracing::debug;
 use Level::*;
 
 use emitter::{is_case_difference, Emitter, EmitterWriter};

src/librustc_expand/Cargo.toml

@@ -12,7 +12,7 @@ doctest = false
 
 [dependencies]
 rustc_serialize = { path = "../librustc_serialize" }
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_span = { path = "../librustc_span" }
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }
 rustc_ast_passes = { path = "../librustc_ast_passes" }

src/librustc_expand/mbe/macro_rules.rs

@@ -25,10 +25,10 @@ use rustc_span::hygiene::Transparency;
 use rustc_span::symbol::{kw, sym, Ident, MacroRulesNormalizedIdent};
 use rustc_span::Span;
 
-use log::debug;
 use std::borrow::Cow;
 use std::collections::hash_map::Entry;
 use std::{mem, slice};
+use tracing::debug;
 
 crate struct ParserAnyMacro<'a> {
     parser: Parser<'a>,