Log a warning when ollama isn't available

Cargo.lock

@@ -10816,6 +10816,7 @@ dependencies = [
  "http_client",
  "inline_completion",
  "language",
+ "log",
  "project",
  "schemars",
  "serde",

crates/ollama/Cargo.toml

@@ -27,6 +27,7 @@ gpui.workspace = true
 http_client.workspace = true
 inline_completion.workspace = true
 language.workspace = true
+log.workspace = true
 
 project.workspace = true
 schemars = { workspace = true, optional = true }

crates/ollama/src/ollama.rs

@@ -411,7 +411,14 @@ pub async fn generate(
     let serialized_request = serde_json::to_string(&request)?;
     let request = request_builder.body(AsyncBody::from(serialized_request))?;
 
-    let mut response = client.send(request).await?;
+    let mut response = match client.send(request).await {
+        Ok(response) => response,
+        Err(err) => {
+            log::warn!("Ollama server unavailable at {}: {}", api_url, err);
+            return Err(err);
+        }
+    };
+
     let mut body = String::new();
     response.body_mut().read_to_string(&mut body).await?;