test: dump trino container state and logs when it exits before ready

When the Trino container dies during startup, waitForTrino only
reported the docker exec error ("container is not running"), which
gives no hint whether the JVM was OOM-killed, the image broke, or the
config is bad. Capture docker inspect exit state and the container
logs in the failure message so runner-side flakes are diagnosable
from the test output alone.

test/s3tables/catalog_trino/trino_catalog_test.go

@@ -484,7 +484,7 @@ func waitForTrino(t *testing.T, containerName string, timeout time.Duration) {
 
 	deadline := time.Now().Add(timeout)
 	var lastOutput []byte
-	retryCount := 0
+	containerDead := false
 	for time.Now().Before(deadline) {
 		// Try system catalog query as a readiness check
 		cmd := exec.Command("docker", "exec", containerName,
@@ -498,9 +498,9 @@ func waitForTrino(t *testing.T, containerName string, timeout time.Duration) {
 			outputStr := string(output)
 			if strings.Contains(outputStr, "No such container") ||
 				strings.Contains(outputStr, "is not running") {
+				containerDead = true
 				break
 			}
-			retryCount++
 		}
 		time.Sleep(1 * time.Second)
 	}
@@ -514,9 +514,25 @@ func waitForTrino(t *testing.T, containerName string, timeout time.Duration) {
 		return
 	}
 
+	if containerDead {
+		t.Fatalf("Trino container %s exited before becoming ready\n%s", containerName, trinoContainerDiagnostics(containerName))
+	}
 	t.Fatalf("Timed out waiting for Trino to be ready\nLast output:\n%s", string(lastOutput))
 }
 
+func trinoContainerDiagnostics(containerName string) string {
+	var b strings.Builder
+	if out, err := exec.Command("docker", "inspect", "-f",
+		"status={{.State.Status}} exitCode={{.State.ExitCode}} oomKilled={{.State.OOMKilled}} error={{.State.Error}}",
+		containerName).CombinedOutput(); err == nil {
+		fmt.Fprintf(&b, "docker inspect: %s\n", strings.TrimSpace(string(out)))
+	}
+	if out, err := exec.Command("docker", "logs", "--tail", "80", containerName).CombinedOutput(); err == nil {
+		fmt.Fprintf(&b, "docker logs:\n%s", string(out))
+	}
+	return b.String()
+}
+
 func runTrinoSQL(t *testing.T, containerName, sql string) string {
 	t.Helper()