Update xous branch

Author: eupn

library/std/Cargo.toml

@@ -47,7 +47,7 @@ rand_xorshift = "0.3.0"
 dlmalloc = { git = "ssh://[email protected]/Foundation-Devices/dlmalloc-rs.git", branch = "xous-fixes-arm", features = ["rustc-dep-of-std"] }
 
 [target.'cfg(keyos)'.dependencies]
-xous = { git = "https://github.com/Foundation-Devices/keyOS.git", features = ['rustc-dep-of-std'], default-features = false }
+xous = { git = "https://github.com/Foundation-Devices/keyOS.git", branch = "SFT-3938-system-crash", features = ['rustc-dep-of-std'], default-features = false }
 
 [target.x86_64-fortanix-unknown-sgx.dependencies]
 fortanix-sgx-abi = { version = "0.5.0", features = ['rustc-dep-of-std'], public = true }