cargo rustc --release --bin justbot -- --emit link=JustBot-4FFD4176
   Compiling justbot v0.5.0-dev (/tmp/tmprv0cxfut/JustBot/JustBot-tmp)
error: failed to run custom build command for `justbot v0.5.0-dev (/tmp/tmprv0cxfut/JustBot/JustBot-tmp)`

Caused by:
  process didn't exit successfully: `/tmp/tmprv0cxfut/JustBot/JustBot-tmp/target/release/build/justbot-cd889c2c0a945093/build-script-build` (exit status: 101)
  --- stderr

  thread 'main' (3430525) panicked at build.rs:21:9:
  Error downloading network!
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
make: *** [Makefile:16: build] Error 101