Depend on Rust 1.52.0
Three things make me want to make Rust 1.52 the MSRV for librsvg:
- CVE-2021-28878 in the Zip iterator in the standard library (RUSTSEC)
- Miscompilations with incremental compilation before 1.52.1 - only of concern to everyday developers, not to full release builds.
- Firefox 90, due on June 29, should require Rust 1.53 anyway - this is a few days before the GNOME 41 alpha, due on July 10.
Edited by Federico Mena Quintero