syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"unstable"}]}
source_snippet:                           unstable location; did you mean to load this crate \
context_before:         unstable_location_reason_default: "this crate is being loaded from the sysroot, an \
context_after:                           from crates.io via `Cargo.toml` instead?",