rust: Switch to the memmap2-rs crate https://github.com/RazrFalcon/memmap2-rs This is a fork of the original memmap crate which appears to be unmaintained: https://github.com/danburkert/memmap-rs/issues/90 This fork is the most popular according to https://crates.io/keywords/mmap Differential Revision: https://phab.mercurial-scm.org/D11397

--- a/rust/hg-core/examples/nodemap/main.rs	Thu Sep 09 18:07:40 2021 +0200
+++ b/rust/hg-core/examples/nodemap/main.rs	Fri Sep 10 09:53:09 2021 +0200
@@ -7,7 +7,7 @@
 use hg::revlog::node::*;
 use hg::revlog::nodemap::*;
 use hg::revlog::*;
-use memmap::MmapOptions;
+use memmap2::MmapOptions;
 use rand::Rng;
 use std::fs::File;
 use std::io;