[BUG] Using env_logger crashes the worker

[pmalek]

Is there an existing issue for this?

• I have searched the existing issues

What version of workers-rs are you using?

0.5.0

What version of wrangler are you using?

3.103.2

Describe the bug

Trying to use env_logger's but I cannot make it work.

env_logger::init() doesn't enable the work because RUST_LOG environment variable is not set ( I couldn't make it work, that's presumably because wasm doesn't have access to env?).

After that attempt I tried to use

env_logger::builder().filter_level(log::LevelFilter::Debug).init()

but that crashes the worker:

✘ [ERROR] service core:user:PROJECT: Uncaught RuntimeError: unreachable

    at [object Object] in $func1519
    at [object Object] in $func993
    at [object Object] in $func1069
    at [object Object] in $func1489
    at [object Object] in $func1272
    at [object Object] in $func1271
    at [object Object] in $func1253
    at [object Object] in $func259
    at [object Object] in $func158
    at [object Object] in $func204



✘ [ERROR] The Workers runtime failed to start. There is likely additional logging output above.

Steps To Reproduce

Use env_logger in worker code, e.g.:

#[event(start)]
fn start() {
    console_log!("Worker started successfully!");
    // env_logger::init(); // Doesn't work
    env_logger::builder().filter_level(log::LevelFilter::Debug).init(); // Crash
    info!("Worker started successfully!"); 
}