Leading spaces from without_time

[zsaw]

Bug Report

Version

├── tracing v0.1.41
│   ├── tracing-attributes v0.1.28 (proc-macro)
│   └── tracing-core v0.1.33
└── tracing-subscriber v0.3.19
    ├── tracing-core v0.1.33 (*)
    └── tracing-log v0.2.0
        └── tracing-core v0.1.33 (*)

Platform

Darwin MacBook-Air.local 24.3.0 Darwin Kernel Version 24.3.0: Thu Jan 2 20:24:06 PST 2025; root:xnu-11215.81.4~3/RELEASE_ARM64_T8103 arm64

Description

I tried this code:

#[tokio::main]
async fn main() {
    println!("hello");
    tracing_subscriber::fmt().without_time().init();
    tracing::info!("hello");
}

I expected to see this happen:

hello
INFO demo: hello

Instead, this happened:

hello
 INFO demo: hello