Crash after exiting sleep

[kettle11]

thread '<unnamed>' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 32, kind: BrokenPipe, message: "Broken pipe" }', /Users/iank/.cargo/registry/src/github.com-1ecc6299db9ec823/devserver_lib-0.1.3/src/lib.rs:96:17 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace ^C

Put Macbook to sleep and came back from sleep and devserver had crashed.

[kettle11]

Again I hit this:

thread '<unnamed>' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 32, kind: BrokenPipe, message: "Broken pipe" }', /Users/ian/.cargo/registry/src/github.com-1ecc6299db9ec823/devserver_lib-0.1.7/src/lib.rs:100:49
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
thread '<unnamed>' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 32, kind: BrokenPipe, message: "Broken pipe" }', /Users/ian/.cargo/registry/src/github.com-1ecc6299db9ec823/devserver_lib-0.1.7/src/lib.rs:100:49