diff --git a/crates/language/src/language.rs b/crates/language/src/language.rs
index b9d28c76a1355044b2d12d44f38781f9087b4ad6..00f86a2488cd1b1a3b85623056e9a6f45777eb0e 100644
--- a/crates/language/src/language.rs
+++ b/crates/language/src/language.rs
@@ -77,7 +77,8 @@ pub trait LspAdapter: 'static + Send + Sync {
         container_dir: PathBuf,
     ) -> BoxFuture<'static, Result<PathBuf>>;
     fn cached_server_binary(&self, container_dir: PathBuf) -> BoxFuture<'static, Option<PathBuf>>;
-    fn process_diagnostics(&self, diagnostics: &mut lsp::PublishDiagnosticsParams);
+
+    fn process_diagnostics(&self, _: &mut lsp::PublishDiagnosticsParams) {}
 
     fn label_for_completion(&self, _: &lsp::CompletionItem, _: &Language) -> Option<CodeLabel> {
         None
diff --git a/crates/zed/src/languages/c.rs b/crates/zed/src/languages/c.rs
index 974742ad33d0d72cfee96e73cf832e4bb52bfa7d..a411c34f2d7edd4a4401c4b7449accada8cc6286 100644
--- a/crates/zed/src/languages/c.rs
+++ b/crates/zed/src/languages/c.rs
@@ -105,6 +105,4 @@ impl super::LspAdapter for CLspAdapter {
         .log_err()
         .boxed()
     }
-
-    fn process_diagnostics(&self, _: &mut lsp::PublishDiagnosticsParams) {}
 }
diff --git a/crates/zed/src/languages/cpp.rs b/crates/zed/src/languages/cpp.rs
index d6e4bf08199cb3edc81e523fd17f4b80f60a50a0..f624c0e930a99297f8196ecc478f0a06f1c316c1 100644
--- a/crates/zed/src/languages/cpp.rs
+++ b/crates/zed/src/languages/cpp.rs
@@ -30,6 +30,4 @@ impl super::LspAdapter for CppLspAdapter {
     fn cached_server_binary(&self, container_dir: PathBuf) -> BoxFuture<'static, Option<PathBuf>> {
         super::c::CLspAdapter.cached_server_binary(container_dir)
     }
-
-    fn process_diagnostics(&self, _: &mut lsp::PublishDiagnosticsParams) {}
 }
diff --git a/crates/zed/src/languages/json.rs b/crates/zed/src/languages/json.rs
index 5bbaba8d908fa49c89f735df2376e4ec8d0976fe..dab6922c719002122b5186e04247807f1039f25f 100644
--- a/crates/zed/src/languages/json.rs
+++ b/crates/zed/src/languages/json.rs
@@ -120,8 +120,6 @@ impl LspAdapter for JsonLspAdapter {
         .boxed()
     }
 
-    fn process_diagnostics(&self, _: &mut lsp::PublishDiagnosticsParams) {}
-
     fn initialization_options(&self) -> Option<serde_json::Value> {
         Some(json!({
             "provideFormatter": true
diff --git a/crates/zed/src/languages/typescript.rs b/crates/zed/src/languages/typescript.rs
index 79c74c521d5c80cff26520c0d03a6860681e5dba..96682d26d73cf22e54f9719334462a25a7f01ab4 100644
--- a/crates/zed/src/languages/typescript.rs
+++ b/crates/zed/src/languages/typescript.rs
@@ -113,8 +113,6 @@ impl LspAdapter for TypeScriptLspAdapter {
         .boxed()
     }
 
-    fn process_diagnostics(&self, _: &mut lsp::PublishDiagnosticsParams) {}
-
     fn label_for_completion(
         &self,
         item: &lsp::CompletionItem,