Why do we need:

• sync::filesystem::types
• sync::io::streams
• cli::exit
• cli::environment
• cli::stdin
• cli::stdout
• cli::stderr

to run a component that uses only std's "format!"?

Reproduce

rustc: 1.82.0

1. rustup target add wasm32-wasip2
2. cd host && sh run.sh

Tracking Issue

rust-lang/rust#133235

The fix

The comment by Alex Crichton.

Also see the run.sh script in the try-fix branch.