nipunn-mbp:~ nipunn$ RUST_BACKTRACE=1 SCCACHE_START_SERVER=1 SCCACHE_NO_DAEMON=1 sccache

thread 'main' panicked at 'this implementation was accidentally provided but is unfortunately unsound, it's recommended to stop using `IoVec::default` or construct a vector with a nonzero length', vendor/iovec-0.1.1/src/lib.rs:131:8
stack backtrace:
   0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace
   1: std::sys_common::backtrace::_print
   2: std::panicking::default_hook::{{closure}}
   3: std::panicking::default_hook
   4: std::panicking::rust_panic_with_hook
   5: std::panicking::begin_panic
   6: <&'a iovec::IoVec as core::default::Default>::default
   7: <tokio_io::length_delimited::FramedWrite<T, B>>::do_write
   8: <tokio_serde_bincode::ReadBincode<T, U> as futures::sink::Sink>::poll_complete
   9: <tokio_proto::streaming::pipeline::advanced::Pipeline<T> as futures::future::Future>::poll
  10: <futures::future::map_err::MapErr<A, F> as futures::future::Future>::poll
  11: tokio_core::reactor::Core::poll
  12: sccache::server::start_server
  13: sccache::commands::run_command
  14: sccache::main
  15: __rust_maybe_catch_panic
  16: std::rt::lang_start