Upgrade to Rust 2021

crates/ruma-state-res/Cargo.toml

@@ -8,7 +8,7 @@ repository = "https://github.com/ruma/ruma"
 readme = "README.md"
 license = "MIT"
 version = "0.7.0"
-edition = "2018"
+edition = "2021"
 
 [package.metadata.docs.rs]
 all-features = true

crates/ruma-state-res/benches/state_res_bench.rs

@@ -10,7 +10,6 @@
 use std::{
     borrow::Borrow,
     collections::{HashMap, HashSet},
-    convert::TryInto,
     sync::{
         atomic::{AtomicU64, Ordering::SeqCst},
         Arc,

crates/ruma-state-res/src/event_auth.rs

@@ -1,4 +1,4 @@
-use std::{borrow::Borrow, collections::BTreeSet, convert::TryFrom};
+use std::{borrow::Borrow, collections::BTreeSet};
 
 use js_int::{int, Int};
 use ruma_common::{

crates/ruma-state-res/src/test_utils.rs

@@ -1,7 +1,6 @@
 use std::{
     borrow::Borrow,
     collections::{BTreeMap, HashMap, HashSet},
-    convert::TryInto,
     sync::{
         atomic::{AtomicU64, Ordering::SeqCst},
         Arc,