Use IsTerminal in rustc_log

Author: joshtriplett

Cargo.lock

@@ -3724,7 +3724,6 @@ dependencies = [
 name = "rustc_log"
 version = "0.0.0"
 dependencies = [
- "atty",
  "rustc_span",
  "tracing",
  "tracing-subscriber",

compiler/rustc_log/Cargo.toml

@@ -4,7 +4,6 @@ version = "0.0.0"
 edition = "2021"
 
 [dependencies]
-atty = "0.2"
 tracing = "0.1.28"
 tracing-subscriber = { version = "0.3.3", default-features = false, features = ["fmt", "env-filter", "smallvec", "parking_lot", "ansi"] }
 tracing-tree = "0.2.0"

compiler/rustc_log/src/lib.rs

@@ -40,10 +40,11 @@
 
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
+#![feature(is_terminal)]
 
 use std::env::{self, VarError};
 use std::fmt::{self, Display};
-use std::io;
+use std::io::{self, IsTerminal};
 use tracing_subscriber::filter::{Directive, EnvFilter, LevelFilter};
 use tracing_subscriber::layer::SubscriberExt;
 
@@ -93,11 +94,11 @@ pub fn init_env_logger(env: &str) -> Result<(), Error> {
 }
 
 pub fn stdout_isatty() -> bool {
-    atty::is(atty::Stream::Stdout)
+    io::stdout().is_terminal()
 }
 
 pub fn stderr_isatty() -> bool {
-    atty::is(atty::Stream::Stderr)
+    io::stderr().is_terminal()
 }
 
 #[derive(Debug)]