diff --git a/hive-c0re/src/dashboard.rs b/hive-c0re/src/dashboard.rs
index d305572..83ec30c 100644
--- a/hive-c0re/src/dashboard.rs
+++ b/hive-c0re/src/dashboard.rs
@@ -1,6 +1,7 @@
 //! Hyperhive dashboard. Lists managed containers (with deep-links to each
 //! container's web UI), pending approvals, and the manager.
 
+use std::fmt::Write as _;
 use std::net::SocketAddr;
 use std::sync::Arc;
 
@@ -62,14 +63,16 @@ fn render_containers(containers: &[String], hostname: &str) -> String {
     out.push_str("<ul>\n");
     for container in containers {
         if container == MANAGER_NAME {
-            out.push_str(&format!(
-                "<li><span class=\"glyph\">▓█▓▒░</span> <a href=\"http://{hostname}:{MANAGER_PORT}/\">{container}</a> <span class=\"role role-m1nd\">m1nd</span> <span class=\"meta\">:{MANAGER_PORT}</span></li>\n",
-            ));
+            let _ = writeln!(
+                out,
+                "<li><span class=\"glyph\">▓█▓▒░</span> <a href=\"http://{hostname}:{MANAGER_PORT}/\">{container}</a> <span class=\"role role-m1nd\">m1nd</span> <span class=\"meta\">:{MANAGER_PORT}</span></li>",
+            );
         } else if let Some(name) = container.strip_prefix(AGENT_PREFIX) {
             let port = lifecycle::agent_web_port(name);
-            out.push_str(&format!(
-                "<li><span class=\"glyph\">▒░▒░░</span> <a href=\"http://{hostname}:{port}/\">{name}</a> <span class=\"role role-ag3nt\">ag3nt</span> <span class=\"meta\">{container} :{port}</span></li>\n",
-            ));
+            let _ = writeln!(
+                out,
+                "<li><span class=\"glyph\">▒░▒░░</span> <a href=\"http://{hostname}:{port}/\">{name}</a> <span class=\"role role-ag3nt\">ag3nt</span> <span class=\"meta\">{container} :{port}</span></li>",
+            );
         }
     }
     out.push_str("</ul>\n");
@@ -87,11 +90,12 @@ fn render_approvals(approvals: &[Approval]) -> String {
     out.push_str("<ul>\n");
     for a in approvals {
         let sha_short = &a.commit_ref[..a.commit_ref.len().min(12)];
-        out.push_str(&format!(
-            "<li><span class=\"glyph\">→</span> <span class=\"id\">#{id}</span> <span class=\"agent\">{agent}</span> <code>{sha_short}</code> <span class=\"meta\">approve via <code>hive-c0re approve {id}</code></span></li>\n",
+        let _ = writeln!(
+            out,
+            "<li><span class=\"glyph\">→</span> <span class=\"id\">#{id}</span> <span class=\"agent\">{agent}</span> <code>{sha_short}</code> <span class=\"meta\">approve via <code>hive-c0re approve {id}</code></span></li>",
             id = a.id,
             agent = a.agent,
-        ));
+        );
     }
     out.push_str("</ul>\n");
     out