Function run 

pub fn run(
    root: &Path,
    platform: &Platform,
    config: &QueueConfig,
    in_flight: &InFlight,
    body: &[u8],
) -> (u16, String)

Runs one round for the target named in body, as JSON.

Errors

Answered as a status and a JSON body rather than returned: a malformed request, a repository or branch that does not exist, a round already in flight for that target, or a tree that cannot be made.