diff --git a/src/librustc_builtin_macros/Cargo.toml b/src/librustc_builtin_macros/Cargo.toml
index c612781153e8f..dee6fed317e90 100644
--- a/src/librustc_builtin_macros/Cargo.toml
+++ b/src/librustc_builtin_macros/Cargo.toml
@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_parse_format = { path = "../librustc_parse_format" }
-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" }
diff --git a/src/librustc_builtin_macros/test.rs b/src/librustc_builtin_macros/test.rs
index 460f947a792af..26d627e6b3003 100644
--- a/src/librustc_builtin_macros/test.rs
+++ b/src/librustc_builtin_macros/test.rs
@@ -292,7 +292,7 @@ pub fn expand_test_or_bench(
     // extern crate test
     let test_extern = cx.item(sp, test_id, vec![], ast::ItemKind::ExternCrate(None));
 
-    log::debug!("synthetic test item:\n{}\n", pprust::item_to_string(&test_const));
+    tracing::debug!("synthetic test item:\n{}\n", pprust::item_to_string(&test_const));
 
     vec![
         // Access to libtest under a hygienic name
diff --git a/src/librustc_builtin_macros/test_harness.rs b/src/librustc_builtin_macros/test_harness.rs
index 98c5c6936d779..3f7128d605d25 100644
--- a/src/librustc_builtin_macros/test_harness.rs
+++ b/src/librustc_builtin_macros/test_harness.rs
@@ -1,6 +1,5 @@
 // Code that generates a test runner to run all the tests in a crate
 
-use log::debug;
 use rustc_ast::ast;
 use rustc_ast::attr;
 use rustc_ast::entry::{self, EntryPointType};
@@ -16,6 +15,7 @@ use rustc_span::symbol::{sym, Ident, Symbol};
 use rustc_span::{Span, DUMMY_SP};
 use rustc_target::spec::PanicStrategy;
 use smallvec::{smallvec, SmallVec};
+use tracing::debug;
 
 use std::{iter, mem};
 
diff --git a/src/librustc_codegen_llvm/Cargo.toml b/src/librustc_codegen_llvm/Cargo.toml
index ec4dfabdcc2f0..2e4b9f22f818c 100644
--- a/src/librustc_codegen_llvm/Cargo.toml
+++ b/src/librustc_codegen_llvm/Cargo.toml
@@ -15,7 +15,7 @@ bitflags = "1.0"
 flate2 = "1.0"
 libc = "0.2"
 measureme = "0.7.1"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_middle = { path = "../librustc_middle" }
 rustc-demangle = "0.1"
 rustc_attr = { path = "../librustc_attr" }
diff --git a/src/librustc_codegen_llvm/asm.rs b/src/librustc_codegen_llvm/asm.rs
index 2f9e49591c381..6961fa4c2c314 100644
--- a/src/librustc_codegen_llvm/asm.rs
+++ b/src/librustc_codegen_llvm/asm.rs
@@ -19,7 +19,7 @@ use rustc_target::abi::*;
 use rustc_target::asm::*;
 
 use libc::{c_char, c_uint};
-use log::debug;
+use tracing::debug;
 
 impl AsmBuilderMethods<'tcx> for Builder<'a, 'll, 'tcx> {
     fn codegen_llvm_inline_asm(
diff --git a/src/librustc_codegen_llvm/back/lto.rs b/src/librustc_codegen_llvm/back/lto.rs
index 6b02b5e8120db..7c710a1cb3d15 100644
--- a/src/librustc_codegen_llvm/back/lto.rs
+++ b/src/librustc_codegen_llvm/back/lto.rs
@@ -4,7 +4,6 @@ use crate::back::write::{
 use crate::llvm::archive_ro::ArchiveRO;
 use crate::llvm::{self, False, True};
 use crate::{LlvmCodegenBackend, ModuleLlvm};
-use log::{debug, info};
 use rustc_codegen_ssa::back::lto::{LtoModuleCodegen, SerializedModule, ThinModule, ThinShared};
 use rustc_codegen_ssa::back::symbol_export;
 use rustc_codegen_ssa::back::write::{CodegenContext, FatLTOInput, ModuleConfig};
@@ -18,6 +17,7 @@ use rustc_middle::dep_graph::WorkProduct;
 use rustc_middle::middle::exported_symbols::SymbolExportLevel;
 use rustc_session::cgu_reuse_tracker::CguReuse;
 use rustc_session::config::{self, CrateType, Lto};
+use tracing::{debug, info};
 
 use std::ffi::{CStr, CString};
 use std::fs::File;
diff --git a/src/librustc_codegen_llvm/back/write.rs b/src/librustc_codegen_llvm/back/write.rs
index 54271d3dd0491..5eadc53606308 100644
--- a/src/librustc_codegen_llvm/back/write.rs
+++ b/src/librustc_codegen_llvm/back/write.rs
@@ -11,7 +11,6 @@ use crate::llvm_util;
 use crate::type_::Type;
 use crate::LlvmCodegenBackend;
 use crate::ModuleLlvm;
-use log::debug;
 use rustc_codegen_ssa::back::write::{BitcodeSection, CodegenContext, EmitObj, ModuleConfig};
 use rustc_codegen_ssa::traits::*;
 use rustc_codegen_ssa::{CompiledModule, ModuleCodegen};
@@ -26,6 +25,7 @@ use rustc_session::Session;
 use rustc_span::symbol::sym;
 use rustc_span::InnerSpan;
 use rustc_target::spec::{CodeModel, RelocModel};
+use tracing::debug;
 
 use libc::{c_char, c_int, c_uint, c_void, size_t};
 use std::ffi::CString;
diff --git a/src/librustc_codegen_llvm/builder.rs b/src/librustc_codegen_llvm/builder.rs
index 8a1bb258d4274..f1e06cd8ebf74 100644
--- a/src/librustc_codegen_llvm/builder.rs
+++ b/src/librustc_codegen_llvm/builder.rs
@@ -6,7 +6,6 @@ use crate::type_::Type;
 use crate::type_of::LayoutLlvmExt;
 use crate::value::Value;
 use libc::{c_char, c_uint};
-use log::debug;
 use rustc_codegen_ssa::base::to_immediate;
 use rustc_codegen_ssa::common::{IntPredicate, RealPredicate, TypeKind};
 use rustc_codegen_ssa::mir::operand::{OperandRef, OperandValue};
@@ -26,6 +25,7 @@ use std::ffi::CStr;
 use std::iter::TrustedLen;
 use std::ops::{Deref, Range};
 use std::ptr;
+use tracing::debug;
 
 // All Builders must have an llfn associated with them
 #[must_use]
diff --git a/src/librustc_codegen_llvm/callee.rs b/src/librustc_codegen_llvm/callee.rs
index afdc8dc618794..4afd906fce7e9 100644
--- a/src/librustc_codegen_llvm/callee.rs
+++ b/src/librustc_codegen_llvm/callee.rs
@@ -9,8 +9,8 @@ use crate::attributes;
 use crate::context::CodegenCx;
 use crate::llvm;
 use crate::value::Value;
-use log::debug;
 use rustc_codegen_ssa::traits::*;
+use tracing::debug;
 
 use rustc_middle::ty::layout::{FnAbiExt, HasTyCtxt};
 use rustc_middle::ty::{self, Instance, TypeFoldable};
diff --git a/src/librustc_codegen_llvm/common.rs b/src/librustc_codegen_llvm/common.rs
index 2a50d4a46d279..d822d619ffe42 100644
--- a/src/librustc_codegen_llvm/common.rs
+++ b/src/librustc_codegen_llvm/common.rs
@@ -19,7 +19,7 @@ use rustc_span::symbol::Symbol;
 use rustc_target::abi::{self, AddressSpace, HasDataLayout, LayoutOf, Pointer, Size};
 
 use libc::{c_char, c_uint};
-use log::debug;
+use tracing::debug;
 
 /*
 * A note on nomenclature of linking: "extern", "foreign", and "upcall".
diff --git a/src/librustc_codegen_llvm/consts.rs b/src/librustc_codegen_llvm/consts.rs
index 1288870f55f1f..566fe1e15d425 100644
--- a/src/librustc_codegen_llvm/consts.rs
+++ b/src/librustc_codegen_llvm/consts.rs
@@ -6,7 +6,6 @@ use crate::type_::Type;
 use crate::type_of::LayoutLlvmExt;
 use crate::value::Value;
 use libc::c_uint;
-use log::debug;
 use rustc_codegen_ssa::traits::*;
 use rustc_hir as hir;
 use rustc_hir::def_id::DefId;
@@ -21,6 +20,7 @@ use rustc_middle::{bug, span_bug};
 use rustc_span::symbol::sym;
 use rustc_span::Span;
 use rustc_target::abi::{AddressSpace, Align, HasDataLayout, LayoutOf, Primitive, Scalar, Size};
+use tracing::debug;
 
 use std::ffi::CStr;
 
diff --git a/src/librustc_codegen_llvm/coverageinfo/mapgen.rs b/src/librustc_codegen_llvm/coverageinfo/mapgen.rs
index 4d9747a43f2e2..c2984607184aa 100644
--- a/src/librustc_codegen_llvm/coverageinfo/mapgen.rs
+++ b/src/librustc_codegen_llvm/coverageinfo/mapgen.rs
@@ -3,11 +3,11 @@ use crate::coverageinfo;
 use crate::llvm;
 
 use llvm::coverageinfo::CounterMappingRegion;
-use log::debug;
 use rustc_codegen_ssa::coverageinfo::map::{Counter, CounterExpression, Region};
 use rustc_codegen_ssa::traits::{BaseTypeMethods, ConstMethods};
 use rustc_data_structures::fx::FxHashMap;
 use rustc_llvm::RustString;
+use tracing::debug;
 
 use std::ffi::CString;
 
diff --git a/src/librustc_codegen_llvm/coverageinfo/mod.rs b/src/librustc_codegen_llvm/coverageinfo/mod.rs
index 9d2090eae8f19..0073e83dedb5b 100644
--- a/src/librustc_codegen_llvm/coverageinfo/mod.rs
+++ b/src/librustc_codegen_llvm/coverageinfo/mod.rs
@@ -5,7 +5,6 @@ use crate::common::CodegenCx;
 
 use libc::c_uint;
 use llvm::coverageinfo::CounterMappingRegion;
-use log::debug;
 use rustc_codegen_ssa::coverageinfo::map::{CounterExpression, ExprKind, FunctionCoverage};
 use rustc_codegen_ssa::traits::{
     BaseTypeMethods, CoverageInfoBuilderMethods, CoverageInfoMethods, StaticMethods,
@@ -13,6 +12,7 @@ use rustc_codegen_ssa::traits::{
 use rustc_data_structures::fx::FxHashMap;
 use rustc_llvm::RustString;
 use rustc_middle::ty::Instance;
+use tracing::debug;
 
 use std::cell::RefCell;
 use std::ffi::CString;
diff --git a/src/librustc_codegen_llvm/debuginfo/metadata.rs b/src/librustc_codegen_llvm/debuginfo/metadata.rs
index 6ae7c7efaee62..836e490c1d62d 100644
--- a/src/librustc_codegen_llvm/debuginfo/metadata.rs
+++ b/src/librustc_codegen_llvm/debuginfo/metadata.rs
@@ -18,7 +18,6 @@ use crate::llvm::debuginfo::{
 };
 use crate::value::Value;
 
-use log::debug;
 use rustc_ast::ast;
 use rustc_codegen_ssa::traits::*;
 use rustc_data_structures::const_cstr;
@@ -43,6 +42,7 @@ use rustc_span::{self, SourceFile, SourceFileHash, Span};
 use rustc_target::abi::{Abi, Align, HasDataLayout, Integer, LayoutOf, TagEncoding};
 use rustc_target::abi::{Int, Pointer, F32, F64};
 use rustc_target::abi::{Primitive, Size, VariantIdx, Variants};
+use tracing::debug;
 
 use libc::{c_longlong, c_uint};
 use std::collections::hash_map::Entry;
diff --git a/src/librustc_codegen_llvm/debuginfo/mod.rs b/src/librustc_codegen_llvm/debuginfo/mod.rs
index a01b855372129..b414426af8c65 100644
--- a/src/librustc_codegen_llvm/debuginfo/mod.rs
+++ b/src/librustc_codegen_llvm/debuginfo/mod.rs
@@ -33,9 +33,9 @@ use rustc_span::{self, BytePos, Span};
 use rustc_target::abi::{LayoutOf, Primitive, Size};
 
 use libc::c_uint;
-use log::debug;
 use smallvec::SmallVec;
 use std::cell::RefCell;
+use tracing::debug;
 
 mod create_scope_map;
 pub mod gdb;
diff --git a/src/librustc_codegen_llvm/declare.rs b/src/librustc_codegen_llvm/declare.rs
index 26ab46bde3843..ec42bd4a039e6 100644
--- a/src/librustc_codegen_llvm/declare.rs
+++ b/src/librustc_codegen_llvm/declare.rs
@@ -18,9 +18,9 @@ use crate::llvm;
 use crate::llvm::AttributePlace::Function;
 use crate::type_::Type;
 use crate::value::Value;
-use log::debug;
 use rustc_codegen_ssa::traits::*;
 use rustc_middle::ty::Ty;
+use tracing::debug;
 
 /// Declare a function.
 ///
diff --git a/src/librustc_codegen_llvm/intrinsic.rs b/src/librustc_codegen_llvm/intrinsic.rs
index 728af7b0a8cd1..0b54284f594f5 100644
--- a/src/librustc_codegen_llvm/intrinsic.rs
+++ b/src/librustc_codegen_llvm/intrinsic.rs
@@ -7,7 +7,7 @@ use crate::type_of::LayoutLlvmExt;
 use crate::va_arg::emit_va_arg;
 use crate::value::Value;
 
-use log::debug;
+use tracing::debug;
 
 use rustc_ast::ast;
 use rustc_codegen_ssa::base::{compare_simd_types, to_immediate, wants_msvc_seh};
diff --git a/src/librustc_codegen_llvm/metadata.rs b/src/librustc_codegen_llvm/metadata.rs
index 6d0612ca075d1..9036428c04b8a 100644
--- a/src/librustc_codegen_llvm/metadata.rs
+++ b/src/librustc_codegen_llvm/metadata.rs
@@ -4,10 +4,10 @@ use crate::llvm::{mk_section_iter, False, ObjectFile};
 use rustc_middle::middle::cstore::MetadataLoader;
 use rustc_target::spec::Target;
 
-use log::debug;
 use rustc_codegen_ssa::METADATA_FILENAME;
 use rustc_data_structures::owning_ref::OwningRef;
 use rustc_data_structures::rustc_erase_owner;
+use tracing::debug;
 
 use rustc_fs_util::path_to_c_string;
 use std::path::Path;
diff --git a/src/librustc_codegen_llvm/mono_item.rs b/src/librustc_codegen_llvm/mono_item.rs
index 0936deb7bb5a9..992e83d08fcae 100644
--- a/src/librustc_codegen_llvm/mono_item.rs
+++ b/src/librustc_codegen_llvm/mono_item.rs
@@ -4,7 +4,6 @@ use crate::base;
 use crate::context::CodegenCx;
 use crate::llvm;
 use crate::type_of::LayoutLlvmExt;
-use log::debug;
 use rustc_codegen_ssa::traits::*;
 use rustc_hir::def_id::{DefId, LOCAL_CRATE};
 pub use rustc_middle::mir::mono::MonoItem;
@@ -12,6 +11,7 @@ use rustc_middle::mir::mono::{Linkage, Visibility};
 use rustc_middle::ty::layout::FnAbiExt;
 use rustc_middle::ty::{self, Instance, TypeFoldable};
 use rustc_target::abi::LayoutOf;
+use tracing::debug;
 
 impl PreDefineMethods<'tcx> for CodegenCx<'ll, 'tcx> {
     fn predefine_static(
diff --git a/src/librustc_codegen_llvm/type_of.rs b/src/librustc_codegen_llvm/type_of.rs
index 1d0adc5783f3d..40870c6647598 100644
--- a/src/librustc_codegen_llvm/type_of.rs
+++ b/src/librustc_codegen_llvm/type_of.rs
@@ -1,7 +1,6 @@
 use crate::abi::FnAbi;
 use crate::common::*;
 use crate::type_::Type;
-use log::debug;
 use rustc_codegen_ssa::traits::*;
 use rustc_middle::bug;
 use rustc_middle::ty::layout::{FnAbiExt, TyAndLayout};
@@ -10,6 +9,7 @@ use rustc_middle::ty::{self, Ty, TypeFoldable};
 use rustc_target::abi::{Abi, AddressSpace, Align, FieldsShape};
 use rustc_target::abi::{Int, Pointer, F32, F64};
 use rustc_target::abi::{LayoutOf, PointeeInfo, Scalar, Size, TyAndLayoutMethods, Variants};
+use tracing::debug;
 
 use std::fmt::Write;
 
diff --git a/src/librustc_codegen_ssa/Cargo.toml b/src/librustc_codegen_ssa/Cargo.toml
index 8fa0de37648f3..3cc1f4c3928d4 100644
--- a/src/librustc_codegen_ssa/Cargo.toml
+++ b/src/librustc_codegen_ssa/Cargo.toml
@@ -14,7 +14,7 @@ bitflags = "1.2.1"
 cc = "1.0.1"
 num_cpus = "1.0"
 memmap = "0.7"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 libc = "0.2.50"
 jobserver = "0.1.11"
 tempfile = "3.1"
diff --git a/src/librustc_codegen_ssa/lib.rs b/src/librustc_codegen_ssa/lib.rs
index 85260d30a3d7c..1e06de0610884 100644
--- a/src/librustc_codegen_ssa/lib.rs
+++ b/src/librustc_codegen_ssa/lib.rs
@@ -17,7 +17,7 @@
 //! have to be implemented by each backends.
 
 #[macro_use]
-extern crate log;
+extern crate tracing;
 #[macro_use]
 extern crate rustc_middle;
 
diff --git a/src/librustc_data_structures/Cargo.toml b/src/librustc_data_structures/Cargo.toml
index 811d1e49626c4..386096b416fb7 100644
--- a/src/librustc_data_structures/Cargo.toml
+++ b/src/librustc_data_structures/Cargo.toml
@@ -12,7 +12,7 @@ doctest = false
 [dependencies]
 ena = "0.14"
 indexmap = "1"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 jobserver_crate = { version = "0.1.13", package = "jobserver" }
 lazy_static = "1"
 once_cell = { version = "1", features = ["parking_lot"] }
diff --git a/src/librustc_data_structures/lib.rs b/src/librustc_data_structures/lib.rs
index 0b2e7cda1b4cc..242390fbde855 100644
--- a/src/librustc_data_structures/lib.rs
+++ b/src/librustc_data_structures/lib.rs
@@ -26,7 +26,7 @@
 #![allow(rustc::default_hash_types)]
 
 #[macro_use]
-extern crate log;
+extern crate tracing;
 #[macro_use]
 extern crate cfg_if;