Upgrade to 2021 edition

Signed-off-by: Obei Sideg <[email protected]>

Author: obeis

crates/vhost-user-backend/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["The Cloud Hypervisor Authors"]
 keywords = ["vhost-user", "virtio"]
 description = "A framework to build vhost-user backend service daemon"
 repository = "https://github.com/rust-vmm/vhost"
-edition = "2018"
+edition = "2021"
 license = "Apache-2.0"
 
 [features]

crates/vhost/Cargo.toml

@@ -8,7 +8,7 @@ repository = "https://github.com/rust-vmm/vhost"
 documentation = "https://docs.rs/vhost"
 readme = "README.md"
 license = "Apache-2.0 OR BSD-3-Clause"
-edition = "2018"
+edition = "2021"
 
 [package.metadata.docs.rs]
 all-features = true