syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"\"divide"}]}
source_snippet:         "divide crate into N units to optimize in parallel"),
context_before:     codegen_units: Option<usize> = (None, parse_opt_number, [UNTRACKED],
context_after:     collapse_macro_debuginfo: CollapseMacroDebuginfo = (CollapseMacroDebuginfo::Unspecified,