Enable clippy::unnecessary_to_owned lint

Meh

Cargo.toml

@@ -95,5 +95,4 @@ clippy.ptr_arg = "allow"
 clippy.redundant_slicing = "allow"
 clippy.too_many_arguments = "allow"
 clippy.uninlined_format_args = "allow"
-clippy.unnecessary_to_owned = "allow"
 clippy.unnecessary_unwrap = "allow"

fish-rust/src/builtins/history.rs

@@ -309,6 +309,7 @@ pub fn history(parser: &Parser, streams: &mut IoStreams, args: &mut [&wstr]) ->
                 ));
                 return STATUS_INVALID_ARGS;
             }
+            #[allow(clippy::unnecessary_to_owned)]
             for delete_string in args.iter().copied() {
                 history.remove(delete_string.to_owned());
             }

fish-rust/src/builtins/source.rs

@@ -96,6 +96,7 @@ pub fn source(parser: &Parser, streams: &mut IoStreams, args: &mut [&wstr]) -> O
     // points to the end of argv. Otherwise we want to skip the file name to get to the args if any.
     let mut argv_list: Vec<WString> = vec![];
     let remaining_args = &args[optind + if argc == optind { 0 } else { 1 }..];
+    #[allow(clippy::unnecessary_to_owned)]
     for arg in remaining_args.iter().copied() {
         argv_list.push(arg.to_owned());
     }

fish-rust/src/history.rs

@@ -1680,6 +1680,7 @@ pub fn search(
                 cancel_check,
             );
         } else {
+            #[allow(clippy::unnecessary_to_owned)]
             for search_string in search_args.iter().copied() {
                 if search_string.is_empty() {
                     streams

fish-rust/src/lib.rs

@@ -21,7 +21,6 @@
 #![allow(clippy::redundant_slicing)]
 #![allow(clippy::too_many_arguments)]
 #![allow(clippy::uninlined_format_args)]
-#![allow(clippy::unnecessary_to_owned)]
 #![allow(clippy::unnecessary_unwrap)]
 
 pub const BUILD_VERSION: &str = match option_env!("FISH_BUILD_VERSION") {