Auto merge of #127316 - klensy:tracing-bump, r=<try>

bump tracing

Unpins `tracing`: linked issue looks fixed, tokio-rs/tracing#2635 referencing davidbarsky/tracing-tree#82

Perf run please, as changelog says about improvements https://github.com/tokio-rs/tracing/blob/tracing-0.1.40/tracing/CHANGELOG.md https://github.com/tokio-rs/tracing/blob/tracing-core-0.1.32/tracing-core/CHANGELOG.md

Cargo.lock

@@ -4289,7 +4289,6 @@ version = "0.0.0"
 dependencies = [
  "rustc_span",
  "tracing",
- "tracing-core",
  "tracing-subscriber",
  "tracing-tree",
 ]
@@ -5811,11 +5810,10 @@ checksum = "ea68304e134ecd095ac6c3574494fc62b909f416c4fca77e440530221e549d3d"
 
 [[package]]
 name = "tracing"
-version = "0.1.37"
+version = "0.1.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ce8c33a8d48bd45d624a6e523445fd21ec13d3653cd51f681abf67418f54eb8"
+checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
 dependencies = [
- "cfg-if",
  "pin-project-lite",
  "tracing-attributes",
  "tracing-core",
@@ -5834,9 +5832,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-core"
-version = "0.1.30"
+version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24eb03ba0eab1fd845050058ce5e616558e8f8d8fca633e6b163fe25c797213a"
+checksum = "c06d3da6113f116aaee68e4d601191614c9053067f9ab7f6edbcb161237daa54"
 dependencies = [
  "once_cell",
  "valuable",

compiler/rustc_log/Cargo.toml

@@ -6,7 +6,6 @@ edition = "2021"
 [dependencies]
 # tidy-alphabetical-start
 tracing = "0.1.28"
-tracing-core = "=0.1.30" # FIXME(Nilstrieb) tracing has a deadlock: https://github.com/tokio-rs/tracing/issues/2635
 tracing-subscriber = { version = "0.3.3", default-features = false, features = ["fmt", "env-filter", "smallvec", "parking_lot", "ansi"] }
 tracing-tree = "0.3.1"
 # tidy-alphabetical-end

compiler/rustc_log/src/lib.rs

@@ -41,7 +41,7 @@
 use std::env::{self, VarError};
 use std::fmt::{self, Display};
 use std::io::{self, IsTerminal};
-use tracing_core::{Event, Subscriber};
+use tracing::{Event, Subscriber};
 use tracing_subscriber::filter::{Directive, EnvFilter, LevelFilter};
 use tracing_subscriber::fmt::{
     format::{self, FormatEvent, FormatFields},