syntax_data: {"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //! nightly Rust feature `-Zbuild-std`. This target is for people who want to
context_before: //! them, and in order to get those libraries rebuilt you need to use the
context_after: //! use stable Rust, and target a stable set pf WebAssembly features.