Switch to memmap2 fork

sdk/src/abi_example.rs

@@ -414,9 +414,9 @@ impl<T: std::cmp::Ord + AbiExample> AbiExample for BTreeSet<T> {
 }
 
 #[cfg(not(feature = "program"))]
-impl AbiExample for memmap::MmapMut {
+impl AbiExample for memmap2::MmapMut {
     fn example() -> Self {
-        memmap::MmapMut::map_anon(1).expect("failed to map the data file")
+        memmap2::MmapMut::map_anon(1).expect("failed to map the data file")
     }
 }
 

sdk/src/genesis_config.rs

@@ -18,7 +18,7 @@ use crate::{
 };
 use bincode::{deserialize, serialize};
 use chrono::{TimeZone, Utc};
-use memmap::Mmap;
+use memmap2::Mmap;
 use std::{
     collections::BTreeMap,
     fmt,