T
thread 'main' panicked at 'Cannot start a runtime from within a runtime. This happens because a function (like `block_on`) attempted to block the current thread while the thread is being used to drive asynchronous tasks.', /Users/tema/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.18/src/runtime/enter.rs:19:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace