The mmap crate is unmaintained as its repository has been archived on Feb 10, 2022. The main alternative seems to be memmap2 crate.
mmap
memmap2
{ "license": "CC0-1.0" }
{ "affected_functions": null, "affects": { "os": [], "arch": [], "functions": [] } }
"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2024-0394.json"
null
"unmaintained"
[]