Move from `log` to `tracing`

37 files changed, 42 insertions, 39 deletions

diff --git a/src/librustc_ast/Cargo.toml b/src/librustc_ast/Cargo.toml
index 6bd65fd5f96..a36f49bd414 100644
--- a/src/librustc_ast/Cargo.toml
+++ b/src/librustc_ast/Cargo.toml
@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_serialize = { path = "../librustc_serialize" }
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 scoped-tls = "1.0"
 rustc_span = { path = "../librustc_span" }
 rustc_data_structures = { path = "../librustc_data_structures" }
diff --git a/src/librustc_ast_lowering/Cargo.toml b/src/librustc_ast_lowering/Cargo.toml
index d71eb4fcd5c..51f34a1b78e 100644
--- a/src/librustc_ast_lowering/Cargo.toml
+++ b/src/librustc_ast_lowering/Cargo.toml
@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_arena = { path = "../librustc_arena" }
-log = { version = "0.4", features = ["release_max_level_info", "std"] }
+log = { package = "tracing", version = "0.1" }
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }
 rustc_hir = { path = "../librustc_hir" }
 rustc_target = { path = "../librustc_target" }
diff --git a/src/librustc_ast_passes/Cargo.toml b/src/librustc_ast_passes/Cargo.toml
index e4d1d79abb2..c53089a4afc 100644
--- a/src/librustc_ast_passes/Cargo.toml
+++ b/src/librustc_ast_passes/Cargo.toml
@@ -10,7 +10,7 @@ path = "lib.rs"
 
 [dependencies]
 itertools = "0.8"
-log = "0.4"
+log = { package = "tracing", version = "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_ast_pretty/Cargo.toml b/src/librustc_ast_pretty/Cargo.toml
index 6c076d2c5b8..4035346d354 100644
--- a/src/librustc_ast_pretty/Cargo.toml
+++ b/src/librustc_ast_pretty/Cargo.toml
@@ -10,7 +10,7 @@ path = "lib.rs"
 doctest = false
 
 [dependencies]
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_span = { path = "../librustc_span" }
 rustc_ast = { path = "../librustc_ast" }
 rustc_target = { path = "../librustc_target" }
diff --git a/src/librustc_builtin_macros/Cargo.toml b/src/librustc_builtin_macros/Cargo.toml
index fdb6c359052..c612781153e 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 = "0.4"
+log = { package = "tracing", version = "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_codegen_llvm/Cargo.toml b/src/librustc_codegen_llvm/Cargo.toml
index bedefcc30ed..ec4dfabdcc2 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 = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_middle = { path = "../librustc_middle" }
 rustc-demangle = "0.1"
 rustc_attr = { path = "../librustc_attr" }
diff --git a/src/librustc_codegen_ssa/Cargo.toml b/src/librustc_codegen_ssa/Cargo.toml
index e100e0095c9..8fa0de37648 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 = "0.4.5"
+log = { package = "tracing", version = "0.1" }
 libc = "0.2.50"
 jobserver = "0.1.11"
 tempfile = "3.1"
diff --git a/src/librustc_data_structures/Cargo.toml b/src/librustc_data_structures/Cargo.toml
index 1c2fb90b2d8..811d1e49626 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 = "0.4"
+log = { package = "tracing", version = "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_driver/Cargo.toml b/src/librustc_driver/Cargo.toml
index 75d65920766..69dd221ef96 100644
--- a/src/librustc_driver/Cargo.toml
+++ b/src/librustc_driver/Cargo.toml
@@ -12,8 +12,8 @@ crate-type = ["dylib"]
 [dependencies]
 lazy_static = "1.0"
 libc = "0.2"
-log = "0.4"
-env_logger = { version = "0.7", default-features = false }
+log = { package = "tracing", version = "0.1.18", features = ["release_max_level_info"]  }
+tracing-subscriber = { version = "0.2.10", features = ["fmt", "env-filter"] }
 rustc_middle = { path = "../librustc_middle" }
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }
 rustc_target = { path = "../librustc_target" }
diff --git a/src/librustc_driver/lib.rs b/src/librustc_driver/lib.rs
index ab4eac9440b..6faffae305d 100644
--- a/src/librustc_driver/lib.rs
+++ b/src/librustc_driver/lib.rs
@@ -1226,7 +1226,11 @@ pub fn install_ice_hook() {
 /// This allows tools to enable rust logging without having to magically match rustc's
 /// log crate version
 pub fn init_rustc_env_logger() {
-    env_logger::init_from_env("RUSTC_LOG");
+    let builder = tracing_subscriber::FmtSubscriber::builder();
+
+    let builder = builder.with_env_filter(tracing_subscriber::EnvFilter::from_env("RUSTC_LOG"));
+
+    builder.init()
 }
 
 pub fn main() -> ! {
diff --git a/src/librustc_errors/Cargo.toml b/src/librustc_errors/Cargo.toml
index 7f72161aff8..d0f04c3fe76 100644
--- a/src/librustc_errors/Cargo.toml
+++ b/src/librustc_errors/Cargo.toml
@@ -10,7 +10,7 @@ path = "lib.rs"
 doctest = false
 
 [dependencies]
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_serialize = { path = "../librustc_serialize" }
 rustc_span = { path = "../librustc_span" }
 rustc_data_structures = { path = "../librustc_data_structures" }
diff --git a/src/librustc_expand/Cargo.toml b/src/librustc_expand/Cargo.toml
index ef617acfe13..bdf039c36ab 100644
--- a/src/librustc_expand/Cargo.toml
+++ b/src/librustc_expand/Cargo.toml
@@ -12,7 +12,7 @@ doctest = false
 
 [dependencies]
 rustc_serialize = { path = "../librustc_serialize" }
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_span = { path = "../librustc_span" }
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }
 rustc_ast_passes = { path = "../librustc_ast_passes" }
diff --git a/src/librustc_hir/Cargo.toml b/src/librustc_hir/Cargo.toml
index 1b91d769c70..4a404e176e1 100644
--- a/src/librustc_hir/Cargo.toml
+++ b/src/librustc_hir/Cargo.toml
@@ -18,5 +18,5 @@ rustc_span = { path = "../librustc_span" }
 rustc_serialize = { path = "../librustc_serialize" }
 rustc_ast = { path = "../librustc_ast" }
 lazy_static = "1"
-log = { version = "0.4", features = ["release_max_level_info", "std"] }
+log = { package = "tracing", version = "0.1" }
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }
diff --git a/src/librustc_incremental/Cargo.toml b/src/librustc_incremental/Cargo.toml
index 7b3030fa1d9..60a87078d63 100644
--- a/src/librustc_incremental/Cargo.toml
+++ b/src/librustc_incremental/Cargo.toml
@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_graphviz = { path = "../librustc_graphviz" }
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rand = "0.7"
 rustc_middle = { path = "../librustc_middle" }
 rustc_data_structures = { path = "../librustc_data_structures" }
diff --git a/src/librustc_infer/Cargo.toml b/src/librustc_infer/Cargo.toml
index 06fc7ecf95f..9d56fa223a9 100644
--- a/src/librustc_infer/Cargo.toml
+++ b/src/librustc_infer/Cargo.toml
@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_graphviz = { path = "../librustc_graphviz" }
-log = { version = "0.4", features = ["release_max_level_info", "std"] }
+log = { package = "tracing", version = "0.1" }
 rustc_middle = { path = "../librustc_middle" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_errors = { path = "../librustc_errors" }
diff --git a/src/librustc_interface/Cargo.toml b/src/librustc_interface/Cargo.toml
index 112dc7037f5..5c7edc10dd5 100644
--- a/src/librustc_interface/Cargo.toml
+++ b/src/librustc_interface/Cargo.toml
@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 libc = "0.2"
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rayon = { version = "0.3.0", package = "rustc-rayon" }
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }
 rustc_ast = { path = "../librustc_ast" }
diff --git a/src/librustc_lint/Cargo.toml b/src/librustc_lint/Cargo.toml
index 58c15257326..3ba1566023d 100644
--- a/src/librustc_lint/Cargo.toml
+++ b/src/librustc_lint/Cargo.toml
@@ -9,7 +9,7 @@ name = "rustc_lint"
 path = "lib.rs"
 
 [dependencies]
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 unicode-security = "0.0.5"
 rustc_middle = { path = "../librustc_middle" }
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }
diff --git a/src/librustc_metadata/Cargo.toml b/src/librustc_metadata/Cargo.toml
index 7bbe7567d29..2c0e2aa39fd 100644
--- a/src/librustc_metadata/Cargo.toml
+++ b/src/librustc_metadata/Cargo.toml
@@ -12,7 +12,7 @@ doctest = false
 [dependencies]
 flate2 = "1.0"
 libc = "0.2"
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 memmap = "0.7"
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }
 rustc_middle = { path = "../librustc_middle" }
diff --git a/src/librustc_middle/Cargo.toml b/src/librustc_middle/Cargo.toml
index 02d82c67933..678fcfe6539 100644
--- a/src/librustc_middle/Cargo.toml
+++ b/src/librustc_middle/Cargo.toml
@@ -13,7 +13,7 @@ doctest = false
 rustc_arena = { path = "../librustc_arena" }
 bitflags = "1.2.1"
 scoped-tls = "1.0"
-log = { version = "0.4", features = ["release_max_level_info", "std"] }
+log = { package = "tracing", version = "0.1" }
 rustc-rayon-core = "0.3.0"
 polonius-engine = "0.12.0"
 rustc_apfloat = { path = "../librustc_apfloat" }
diff --git a/src/librustc_mir/Cargo.toml b/src/librustc_mir/Cargo.toml
index aebce78e401..f05c47e0ed6 100644
--- a/src/librustc_mir/Cargo.toml
+++ b/src/librustc_mir/Cargo.toml
@@ -13,7 +13,7 @@ doctest = false
 either = "1.5.0"
 rustc_graphviz = { path = "../librustc_graphviz" }
 itertools = "0.8"
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 log_settings = "0.1.1"
 polonius-engine = "0.12.0"
 rustc_middle = { path = "../librustc_middle" }
diff --git a/src/librustc_mir/interpret/eval_context.rs b/src/librustc_mir/interpret/eval_context.rs
index 630b2890835..879a8e64490 100644
--- a/src/librustc_mir/interpret/eval_context.rs
+++ b/src/librustc_mir/interpret/eval_context.rs
@@ -818,11 +818,10 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
     ) -> InterpResult<'tcx> {
         // FIXME: should we tell the user that there was a local which was never written to?
         if let LocalValue::Live(Operand::Indirect(MemPlace { ptr, .. })) = local {
-            trace!("deallocating local");
             // All locals have a backing allocation, even if the allocation is empty
             // due to the local having ZST type.
             let ptr = ptr.assert_ptr();
-            trace!("{:?}", self.memory.dump_alloc(ptr.alloc_id));
+            trace!("deallocating local: {:?}", self.memory.dump_alloc(ptr.alloc_id));
             self.memory.deallocate_local(ptr)?;
         };
         Ok(())
diff --git a/src/librustc_mir_build/Cargo.toml b/src/librustc_mir_build/Cargo.toml
index 401a5009e3c..96059fa43e5 100644
--- a/src/librustc_mir_build/Cargo.toml
+++ b/src/librustc_mir_build/Cargo.toml
@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_arena = { path = "../librustc_arena" }
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_middle = { path = "../librustc_middle" }
 rustc_apfloat = { path = "../librustc_apfloat" }
 rustc_attr = { path = "../librustc_attr" }
diff --git a/src/librustc_parse/Cargo.toml b/src/librustc_parse/Cargo.toml
index 7164c678808..f214ec020cb 100644
--- a/src/librustc_parse/Cargo.toml
+++ b/src/librustc_parse/Cargo.toml
@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 bitflags = "1.0"
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_feature = { path = "../librustc_feature" }
diff --git a/src/librustc_passes/Cargo.toml b/src/librustc_passes/Cargo.toml
index 69048cbf24a..d9fa435e3ad 100644
--- a/src/librustc_passes/Cargo.toml
+++ b/src/librustc_passes/Cargo.toml
@@ -9,7 +9,7 @@ name = "rustc_passes"
 path = "lib.rs"
 
 [dependencies]
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_middle = { path = "../librustc_middle" }
 rustc_attr = { path = "../librustc_attr" }
 rustc_data_structures = { path = "../librustc_data_structures" }
diff --git a/src/librustc_privacy/Cargo.toml b/src/librustc_privacy/Cargo.toml
index 6110d2ef7fc..6f543e71b42 100644
--- a/src/librustc_privacy/Cargo.toml
+++ b/src/librustc_privacy/Cargo.toml
@@ -17,4 +17,4 @@ rustc_typeck = { path = "../librustc_typeck" }
 rustc_session = { path = "../librustc_session" }
 rustc_span = { path = "../librustc_span" }
 rustc_data_structures = { path = "../librustc_data_structures" }
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
diff --git a/src/librustc_query_system/Cargo.toml b/src/librustc_query_system/Cargo.toml
index 73d50f84fe8..64af9c5f1a1 100644
--- a/src/librustc_query_system/Cargo.toml
+++ b/src/librustc_query_system/Cargo.toml
@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_arena = { path = "../librustc_arena" }
-log = { version = "0.4", features = ["release_max_level_info", "std"] }
+log = { package = "tracing", version = "0.1" }
 rustc-rayon-core = "0.3.0"
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_errors = { path = "../librustc_errors" }
diff --git a/src/librustc_resolve/Cargo.toml b/src/librustc_resolve/Cargo.toml
index 6f6104c3d69..1cb49132ead 100644
--- a/src/librustc_resolve/Cargo.toml
+++ b/src/librustc_resolve/Cargo.toml
@@ -12,7 +12,7 @@ doctest = false
 
 [dependencies]
 bitflags = "1.2.1"
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_ast = { path = "../librustc_ast" }
 rustc_arena = { path = "../librustc_arena" }
 rustc_middle = { path = "../librustc_middle" }
diff --git a/src/librustc_save_analysis/Cargo.toml b/src/librustc_save_analysis/Cargo.toml
index 5948c88054d..7a5ae0ace3a 100644
--- a/src/librustc_save_analysis/Cargo.toml
+++ b/src/librustc_save_analysis/Cargo.toml
@@ -9,7 +9,7 @@ name = "rustc_save_analysis"
 path = "lib.rs"
 
 [dependencies]
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_middle = { path = "../librustc_middle" }
 rustc_ast = { path = "../librustc_ast" }
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }
diff --git a/src/librustc_session/Cargo.toml b/src/librustc_session/Cargo.toml
index abce7359c0e..35c227df850 100644
--- a/src/librustc_session/Cargo.toml
+++ b/src/librustc_session/Cargo.toml
@@ -11,7 +11,7 @@ path = "lib.rs"
 [dependencies]
 bitflags = "1.2.1"
 getopts = "0.2"
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_errors = { path = "../librustc_errors" }
 rustc_feature = { path = "../librustc_feature" }
 rustc_target = { path = "../librustc_target" }
diff --git a/src/librustc_span/Cargo.toml b/src/librustc_span/Cargo.toml
index 2a7a7748725..2db417ce0e1 100644
--- a/src/librustc_span/Cargo.toml
+++ b/src/librustc_span/Cargo.toml
@@ -18,6 +18,6 @@ rustc_arena = { path = "../librustc_arena" }
 scoped-tls = "1.0"
 unicode-width = "0.1.4"
 cfg-if = "0.1.2"
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 sha-1 = "0.8"
 md-5 = "0.8"
diff --git a/src/librustc_symbol_mangling/Cargo.toml b/src/librustc_symbol_mangling/Cargo.toml
index d670ababe9f..757d86bd95a 100644
--- a/src/librustc_symbol_mangling/Cargo.toml
+++ b/src/librustc_symbol_mangling/Cargo.toml
@@ -10,7 +10,7 @@ path = "lib.rs"
 doctest = false
 
 [dependencies]
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 punycode = "0.4.0"
 rustc-demangle = "0.1.16"
 
diff --git a/src/librustc_target/Cargo.toml b/src/librustc_target/Cargo.toml
index c73490e4513..21796e84985 100644
--- a/src/librustc_target/Cargo.toml
+++ b/src/librustc_target/Cargo.toml
@@ -10,7 +10,7 @@ path = "lib.rs"
 
 [dependencies]
 bitflags = "1.2.1"
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_macros = { path = "../librustc_macros" }
 rustc_serialize = { path = "../librustc_serialize" }
diff --git a/src/librustc_trait_selection/Cargo.toml b/src/librustc_trait_selection/Cargo.toml
index fd11a85a9c4..c43fe3f2c0c 100644
--- a/src/librustc_trait_selection/Cargo.toml
+++ b/src/librustc_trait_selection/Cargo.toml
@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_parse_format = { path = "../librustc_parse_format" }
-log = { version = "0.4", features = ["release_max_level_info", "std"] }
+log = { package = "tracing", version = "0.1" }
 rustc_attr = { path = "../librustc_attr" }
 rustc_middle = { path = "../librustc_middle" }
 rustc_ast = { path = "../librustc_ast" }
diff --git a/src/librustc_traits/Cargo.toml b/src/librustc_traits/Cargo.toml
index 079b9b10fd0..f8487982e3d 100644
--- a/src/librustc_traits/Cargo.toml
+++ b/src/librustc_traits/Cargo.toml
@@ -9,7 +9,7 @@ name = "rustc_traits"
 path = "lib.rs"
 
 [dependencies]
-log = { version = "0.4" }
+log = { package = "tracing", version = "0.1" }
 rustc_middle = { path = "../librustc_middle" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_hir = { path = "../librustc_hir" }
diff --git a/src/librustc_ty/Cargo.toml b/src/librustc_ty/Cargo.toml
index b6db75e44f9..6cdb3530002 100644
--- a/src/librustc_ty/Cargo.toml
+++ b/src/librustc_ty/Cargo.toml
@@ -9,7 +9,7 @@ name = "rustc_ty"
 path = "lib.rs"
 
 [dependencies]
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_middle = { path = "../librustc_middle" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_errors = { path = "../librustc_errors" }
diff --git a/src/librustc_typeck/Cargo.toml b/src/librustc_typeck/Cargo.toml
index 93b503c976b..963deda162d 100644
--- a/src/librustc_typeck/Cargo.toml
+++ b/src/librustc_typeck/Cargo.toml
@@ -12,7 +12,7 @@ doctest = false
 
 [dependencies]
 rustc_arena = { path = "../librustc_arena" }
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 rustc_middle = { path = "../librustc_middle" }
 rustc_attr = { path = "../librustc_attr" }
 rustc_data_structures = { path = "../librustc_data_structures" }
diff --git a/src/tools/compiletest/Cargo.toml b/src/tools/compiletest/Cargo.toml
index 338a167de3f..bd4c5949800 100644
--- a/src/tools/compiletest/Cargo.toml
+++ b/src/tools/compiletest/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 diff = "0.1.10"
 env_logger = { version = "0.7", default-features = false }
 getopts = "0.2"
-log = "0.4"
+log = { package = "tracing", version = "0.1" }
 regex = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"