Rollup merge of rust-lang#89224 - TaKO8Ki:change-the-order-of-suggestions, r=joshtriplett

Change the order of imports suggestions

closes rust-lang#83564

Author: Manishearth

compiler/rustc_resolve/src/diagnostics.rs

@@ -1706,6 +1706,9 @@ crate fn show_candidates(
         candidates.iter().map(|c| path_names_to_string(&c.path)).collect();
 
     path_strings.sort();
+    let core_path_strings =
+        path_strings.drain_filter(|p| p.starts_with("core::")).collect::<Vec<String>>();
+    path_strings.extend(core_path_strings);
     path_strings.dedup();
 
     let (determiner, kind) = if candidates.len() == 1 {

compiler/rustc_resolve/src/lib.rs

@@ -10,6 +10,7 @@
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(box_patterns)]
+#![feature(drain_filter)]
 #![feature(bool_to_option)]
 #![feature(crate_visibility_modifier)]
 #![feature(format_args_capture)]