Replace pretty_env_logger with tracing-subscriber

Cargo.toml

@@ -33,7 +33,6 @@ goblin = "0.5.4"
 human-panic = { version = "1.0.3", optional = true }
 keyring = { version = "1.1.1", optional = true }
 platform-info = "1.0.0"
-pretty_env_logger = { version = "0.4.0", optional = true }
 regex = "1.4.5"
 serde = { version = "1.0.141", features = ["derive"] }
 serde_json = "1.0.80"
@@ -63,6 +62,7 @@ clap = { version = "3.2.19", features = ["derive", "env", "wrap_help"] }
 clap_complete = "3.1.3"
 clap_complete_fig = "3.1.0"
 tracing = "0.1.36"
+tracing-subscriber = { version = "0.3.15", optional = true }
 dunce = "1.0.2"
 pep440 = "0.2.0"
 
@@ -84,7 +84,7 @@ rustversion = "1.0.9"
 default = ["log", "upload", "rustls", "human-panic"]
 upload = ["ureq", "multipart", "rpassword", "configparser", "bytesize"]
 password-storage = ["upload", "keyring"]
-log = ["pretty_env_logger"]
+log = ["tracing-subscriber"]
 rustls = ["ureq/tls", "cargo-xwin/rustls-tls"]
 native-tls = ["ureq/native-tls", "native-tls-crate", "cargo-xwin/native-tls"]
 # Internal feature to speed up the tests significantly

src/main.rs

@@ -307,7 +307,7 @@ fn pep517(subcommand: Pep517Command) -> Result<()> {
 
 fn run() -> Result<()> {
     #[cfg(feature = "log")]
-    pretty_env_logger::init();
+    tracing_subscriber::fmt::init();
 
     // Allow symlink `maturin` to `ar` to invoke `zig ar`
     // See https://github.com/messense/cargo-zigbuild/issues/52