diff --git a/scripts/gamble.ts b/scripts/gamble.ts
index c2b2f7eb23..6da9cab285 100755
--- a/scripts/gamble.ts
+++ b/scripts/gamble.ts
@@ -11,6 +11,23 @@ let numTimedOut = 0;
 const signals = new Map<string, number>();
 const codes = new Map<number, number>();
 let numOk = 0;
+const width = attempts.toString().length;
+const pad = (num: number): string => num.toString().padStart(width, " ");
+const green = (text: string) => console.log(`\x1b[32m${text}\x1b[0m`);
+const red = (text: string) => console.log(`\x1b[31m${text}\x1b[0m`);
+const formatTime = (ms: number): string => {
+  if (ms < 0) ms = 0;
+  const totalSeconds = Math.floor(ms / 1000);
+  const hours = Math.floor(totalSeconds / 3600);
+  const minutes = Math.floor((totalSeconds % 3600) / 60);
+  const seconds = totalSeconds % 60;
+
+  const padNumber = (n: number) => n.toString().padStart(2, "0");
+
+  return `${padNumber(hours)}:${padNumber(minutes)}:${padNumber(seconds)}`;
+};
+const start = Date.now();
+let totalTimeEstimate = -1;
 
 for (let i = 0; i < attempts; i++) {
   const proc = Bun.spawn({
@@ -24,31 +41,42 @@ for (let i = 0; i < attempts; i++) {
   const errors = await new Response(proc.stderr).text();
 
   const { signalCode: signal, exitCode } = proc;
+  let description: string;
 
   if (signal === "SIGTERM") {
     // sent for timeouts
     numTimedOut += 1;
+    description = "timeout";
   } else if (signal) {
     const newCount = 1 + (signals.get(signal) ?? 0);
     signals.set(signal, newCount);
+    description = signal;
   } else if (exitCode !== 0) {
     // if null there should have been a signal
     assert(exitCode !== null);
     const newCount = 1 + (codes.get(exitCode) ?? 0);
     codes.set(exitCode, newCount);
+    description = `code ${exitCode}`;
   } else {
+    description = "ok";
     numOk += 1;
   }
-  if (exitCode !== 0) console.log(errors);
-  process.stdout.write(exitCode === 0 ? "." : "!");
+  if (exitCode !== 0) {
+    red(" " + description);
+    console.log(errors);
+  }
+  const now = Date.now();
+  const currentTotalTimeEstimate = (now - start) / ((i + 1) / attempts);
+  if (totalTimeEstimate < 0) {
+    totalTimeEstimate = currentTotalTimeEstimate;
+  } else {
+    totalTimeEstimate = 0.8 * totalTimeEstimate + 0.2 * currentTotalTimeEstimate;
+  }
+  const remaining = totalTimeEstimate - (now - start);
+  process.stdout.write(`\r\x1b[2K${pad(i + 1)}/${attempts} completed, ${formatTime(remaining)} remaining`);
 }
 process.stdout.write("\n");
 
-const width = attempts.toString().length;
-const pad = (num: number): string => num.toString().padStart(width, " ");
-const green = (text: string) => console.log(`\x1b[32m${text}\x1b[0m`);
-const red = (text: string) => console.log(`\x1b[31m${text}\x1b[0m`);
-
 green(`${pad(numOk)}/${attempts} OK`);
 if (numTimedOut > 0) {
   red(`${pad(numTimedOut)}/${attempts} timeout`);