lazy_static error

akf@UBUNTURAKETE:~/mdl4langs-rs$ rustc -Z unstable-options --pretty expanded mdl4langs/src/basics/item_managing/test.rs
error[E0464]: multiple matching crates for `lazy_static`
  --> mdl4langs/src/basics/item_managing/test.rs:12:1
   |
12 | extern crate lazy_static;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: candidates:
           crate `lazy_static`: /home/akf/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblazy_static-22d29e5a4eee17f4.rlib
           crate `lazy_static`: /home/akf/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblazy_static-4ef3ca9d08baef47.rlib

error[E0463]: can't find crate for `lazy_static`
  --> mdl4langs/src/basics/item_managing/test.rs:12:1
   |
12 | extern crate lazy_static;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate

error: aborting due to 2 previous errors

Some errors occurred: E0463, E0464.
For more information about an error, try `rustc --explain E0463`.