Yeah I agree - in fact I ran into this very issue only hours ago. The entire error message was literally "operation not supported on this platform". Yeay. http

Yeah I agree - in fact I ran into this very issue only hours ago. The entire error message was literally "operation not supported on this platform". Yeay. https://github.com/rust-lang/rust/issues/141854 https://github.com/rust-lang/rust/issues/141854 > I'll also note that this was quite annoying to debug since the error message in its entirety was `operation not supported on this platform`, you can't use RUST_BACKTRACE, rustfmt doesn't have extensive logging, and I don't fancy setting up WASM debugging. I resorted to tedious printf debugging. (Side rant: for all the emphasis Rust puts on compiler error messages its runtime error messages are usually quite terrible!) Even with working debugging it's hard to find the error since you can't set a breakpoint on `Err()` like you can with `throw`.