mockall_derive 0.2.1

# rustc version
rustc 1.38.0-nightly (95b1fe560 2019-07-20)# docs.rs version
cratesfyi 0.6.0 (f01dedd 2019-07-30)# build log
Updating crates.io index
thread 'main' panicked at 'ErrorMessage {
msg: "failed to select a version for `mockall_derive`.\n    ... required by package `mockall v0.2.0`\n    ... which is depended on by `mockall_derive v0.2.1`\nversions that meet the requirements `= 0.2.0` are: 0.2.0\n\nall possible versions conflict with previously selected packages.\n\n  previously selected package `mockall_derive v0.2.1`\n\nfailed to select a version for `mockall_derive` which could resolve this conflict",
}', src/bin/cratesfyi.rs:161:13
note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.