Fix clippy lints (#1327)

* Fix clippy lints

* Update formatting

* Remove unsafe send impls

* New type for Rc<NodeContainer>

proc-macros/Cargo.toml

@@ -19,7 +19,7 @@ default = ["serde-discriminant"]
 serde-discriminant = []
 
 [dependencies]
-proc-macro2 = "1.0.26"
+proc-macro2 = "1"
 syn = { version = "1.0.68", features = ["full"] }
 quote = "1.0.9"
 

proc-macros/src/helpers.rs

@@ -4,6 +4,7 @@ use syn::{Path, PathArguments, PathSegment, Token};
 
 /// Returns `Ok(Vec<T>)` if all items are `Ok(T)`, else returns a combination of every error encountered (not just the first one)
 pub fn fold_error_iter<T>(iter: impl Iterator<Item = syn::Result<T>>) -> syn::Result<Vec<T>> {
+	#[allow(clippy::manual_try_fold)]
 	iter.fold(Ok(vec![]), |acc, x| match acc {
 		Ok(mut v) => x.map(|x| {
 			v.push(x);