{"id":"RUSTSEC-2026-0173","summary":"proc-macro-error2 is unmaintained","details":"The author of `proc-macro-error2` has [confirmed](https://github.com/GnomedDev/proc-macro-error-2/issues/17#issuecomment-4643215473) that the crate is no longer maintained and recommends that users migrate away from it.\n\n`proc-macro-error2` was originally created as a maintained fork of [`proc-macro-error`](https://crates.io/crates/proc-macro-error) (see [RUSTSEC-2024-0370](https://rustsec.org/advisories/RUSTSEC-2024-0370)). Both the original crate and this fork are now unmaintained.\n\n## Possible Alternative(s)\n\n- [manyhow](https://crates.io/crates/manyhow)\n- [proc-macro2-diagnostics](https://github.com/SergioBenitez/proc-macro2-diagnostics)","modified":"2026-06-07T21:00:04.318567692Z","published":"2026-06-07T12:00:00Z","database_specific":{"license":"CC0-1.0"},"references":[{"type":"PACKAGE","url":"https://crates.io/crates/proc-macro-error2"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2026-0173.html"},{"type":"REPORT","url":"https://github.com/GnomedDev/proc-macro-error-2/issues/17"}],"affected":[{"package":{"name":"proc-macro-error2","ecosystem":"crates.io","purl":"pkg:cargo/proc-macro-error2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}],"ecosystem_specific":{"affects":{"arch":[],"os":[],"functions":[]},"affected_functions":null},"database_specific":{"source":"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0173.json","cvss":null,"informational":"unmaintained","categories":[]}}],"schema_version":"1.7.5"}