error: crate `rustc_serialize` required to be available in rlib format, but was not found in this form
   |
   = help: try adding `extern crate rustc_driver;` at the top level of this crate

error: crate `smallvec` required to be available in rlib format, but was not found in this form

error: crate `thin_vec` required to be available in rlib format, but was not found in this form

error: crate `indexmap` required to be available in rlib format, but was not found in this form

error: crate `hashbrown` required to be available in rlib format, but was not found in this form

error: crate `equivalent` required to be available in rlib format, but was not found in this form

error: aborting due to 6 previous errors