RUSTSEC-2026-0260 `arrayref` 0.3.10 was removed from crates.io due to a malicious dependency

A new version of the arrayref crate was published with a direct dependency on proc-macro1, which would execute a malicious build script. This compromised version was published on 2026-08-20 and removed approximately 86 minutes later, with no evidence of actual usage...

Malicious code in proc_macro1 (crates.io)

proc-macro1 is a typosquat of proc-macro2 published to crates.io by the account 'dtolney', impersonating David Tolnay dtolnay. Its metadata forges authors 'David Tolnay ' and points repository at a nonexistent github.com/dtolnay/proc-macro1. The library source is a copy of proc-macro2 so dependen...