Replaced log with tracing crate

src/librustc_ast_lowering/Cargo.toml

@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_arena = { path = "../librustc_arena" }
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }
 rustc_hir = { path = "../librustc_hir" }
 rustc_target = { path = "../librustc_target" }

src/librustc_ast_lowering/item.rs

@@ -17,9 +17,9 @@ use rustc_span::symbol::{kw, sym, Ident};
 use rustc_span::Span;
 use rustc_target::spec::abi;
 
-use log::debug;
 use smallvec::{smallvec, SmallVec};
 use std::collections::BTreeSet;
+use tracing::debug;
 
 pub(super) struct ItemLowerer<'a, 'lowering, 'hir> {
     pub(super) lctx: &'a mut LoweringContext<'lowering, 'hir>,

src/librustc_ast_lowering/lib.rs

@@ -64,10 +64,10 @@ use rustc_span::source_map::{respan, DesugaringKind, ExpnData, ExpnKind};
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::Span;
 
-use log::{debug, trace};
 use smallvec::{smallvec, SmallVec};
 use std::collections::BTreeMap;
 use std::mem;
+use tracing::{debug, trace};
 
 macro_rules! arena_vec {
     ($this:expr; $($x:expr),*) => ({

src/librustc_ast_lowering/path.rs

@@ -12,8 +12,8 @@ use rustc_session::lint::BuiltinLintDiagnostics;
 use rustc_span::symbol::Ident;
 use rustc_span::Span;
 
-use log::debug;
 use smallvec::smallvec;
+use tracing::debug;
 
 impl<'a, 'hir> LoweringContext<'a, 'hir> {
     crate fn lower_qpath(

src/librustc_ast_passes/Cargo.toml

@@ -10,7 +10,7 @@ path = "lib.rs"
 
 [dependencies]
 itertools = "0.8"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }
 rustc_attr = { path = "../librustc_attr" }
 rustc_data_structures = { path = "../librustc_data_structures" }

src/librustc_ast_passes/feature_gate.rs

@@ -10,7 +10,7 @@ use rustc_span::source_map::Spanned;
 use rustc_span::symbol::{sym, Symbol};
 use rustc_span::Span;
 
-use log::debug;
+use tracing::debug;
 
 macro_rules! gate_feature_fn {
     ($cx: expr, $has_feature: expr, $span: expr, $name: expr, $explain: expr) => {{

src/librustc_ast_pretty/Cargo.toml

@@ -10,7 +10,7 @@ path = "lib.rs"
 doctest = false
 
 [dependencies]
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_span = { path = "../librustc_span" }
 rustc_ast = { path = "../librustc_ast" }
 rustc_target = { path = "../librustc_target" }

src/librustc_ast_pretty/pp.rs

@@ -132,10 +132,10 @@
 //! methods called `Printer::scan_*`, and the 'PRINT' process is the
 //! method called `Printer::print`.
 
-use log::debug;
 use std::borrow::Cow;
 use std::collections::VecDeque;
 use std::fmt;
+use tracing::debug;
 
 /// How to break. Described in more detail in the module docs.
 #[derive(Clone, Copy, PartialEq)]