Update to rust 2021

server/Cargo.toml

@@ -4,7 +4,7 @@ description = "studielogg aka scuffed toggl"
 version = "2.6.7"
 authors = ["Joakim Hulthe <joakim@hulthe.net>"]
 license = "MPL-2.0"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 dotenv = "0.13.0"

server/src/routes/api/category.rs

@@ -101,7 +101,7 @@ pub fn set_parent(
         }
 
         // this also makes sure that parent exists
-        let parent = category::get(&categories_tree, &&next_parent_id)?;
+        let parent = category::get(&categories_tree, &next_parent_id)?;
 
         match parent.parent {
             Some(grandparent_id) => next_parent_id = grandparent_id,