worker1: cargo run --offline --release --example demo
worker2: cargo run --offline --release --example demo
worker3: cargo run --offline --release --example demo
worker4: cargo run --offline --release --example demo
worker5: cargo run --offline --release --example demo
worker6: cargo run --offline --release --example demo
worker7: cargo run --offline --release --example demo
worker8: cargo run --offline --release --example demo
worker9: cargo run --offline --release --example demo