From 955ba37aa597843abe5171fd80079f4f456785fb Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Tue, 11 Apr 2023 17:14:53 +1000
Subject: [PATCH] Remove the unused `anon_num_here` error.

---
 compiler/rustc_infer/messages.ftl                   | 1 -
 compiler/rustc_infer/src/errors/note_and_explain.rs | 2 --
 2 files changed, 3 deletions(-)

diff --git a/compiler/rustc_infer/messages.ftl b/compiler/rustc_infer/messages.ftl
index 4d4a7880b00..1ae53182046 100644
--- a/compiler/rustc_infer/messages.ftl
+++ b/compiler/rustc_infer/messages.ftl
@@ -163,7 +163,6 @@ infer_region_explanation = {$pref_kind ->
     [as_defined] the lifetime `{$desc_arg}` as defined here
     [as_defined_anon] the anonymous lifetime as defined here
     [defined_here] the anonymous lifetime defined here
-    [anon_num_here] the anonymous lifetime #{$desc_num_arg} defined here
     [defined_here_reg] the lifetime `{$desc_arg}` as defined here
 }{$suff_kind ->
     *[should_not_happen] [{$suff_kind}]
diff --git a/compiler/rustc_infer/src/errors/note_and_explain.rs b/compiler/rustc_infer/src/errors/note_and_explain.rs
index 30f6af74b83..744fb27635a 100644
--- a/compiler/rustc_infer/src/errors/note_and_explain.rs
+++ b/compiler/rustc_infer/src/errors/note_and_explain.rs
@@ -9,7 +9,6 @@ struct DescriptionCtx<'a> {
     span: Option<Span>,
     kind: &'a str,
     arg: String,
-    num_arg: u32,
 }
 
 impl<'a> DescriptionCtx<'a> {
@@ -113,7 +112,6 @@ fn from_early_bound_and_free_regions<'tcx>(
     fn add_to(self, diag: &mut rustc_errors::Diagnostic) {
         diag.set_arg("desc_kind", self.kind);
         diag.set_arg("desc_arg", self.arg);
-        diag.set_arg("desc_num_arg", self.num_arg);
     }
 }