syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"\"unknown"}]}
source_snippet:                         "unknown crate type: `{part}`, expected one of: \
context_before:                     return Err(format!(
context_after:                         `lib`, `rlib`, `staticlib`, `dylib`, `cdylib`, `bin`, `proc-macro`",