> This crate provides a library for parsing, compiling, and executing regular expressions. Its syntax is similar to Perl-style regular expressions, but lacks a few features like look around and backreferences.
Edit: I see. It can use pcre2 but it's a build time option which of course Ubuntu has off.
https://docs.rs/regex/1.5.4/regex/#syntax
> This crate provides a library for parsing, compiling, and executing regular expressions. Its syntax is similar to Perl-style regular expressions, but lacks a few features like look around and backreferences.
Edit: I see. It can use pcre2 but it's a build time option which of course Ubuntu has off.