(/user/playground/rustLang/train)\nerror[E0463]: can't find crate for`std`\n |\n = note: the`wasm32-wasi`target may not be installed\n = help: consider downloading the target with`rustup target add wasm32-wasi`\n\nerror: cannot find macro`println`in this scope\n --> src/main...
"failed to find the `wasm32-wasi` target \ "failed to find the `wasm32-wasip1` target \ and `rustup` is not available. If you're using rustup \ make sure that it's correctly installed; if not, make sure to \ install the `wasm32-wasi` target before using this command...