keyring-0.1.1 beta regression

[est31]

keyring version 0.1.1 regressed from stable to beta (full log):

Aug 03 07:41:19.865 INFO kablam! error: type `rand::gmp_randstate_struct` is private
Aug 03 07:41:19.865 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/rust-gmp-0.2.10/src/mpz.rs:90:5
Aug 03 07:41:19.865 INFO kablam!    |
Aug 03 07:41:19.865 INFO kablam! 90 |     fn __gmpz_urandomb(rop: mpz_ptr, state: gmp_randstate_t, n: mp_bitcnt_t);
Aug 03 07:41:19.865 INFO kablam!    |  

cc @hwchen

[petrochenkov]

Caused by old version of rust-gmp, see #42125 (comment)

[arielb1]

duplicate of #43679.

[alexcrichton]

Closing in favor of #43679