1 error[E0460]: found possibly newer version of crate `a` which `b` depends on
2 --> $DIR/changing-crates.rs:20:1
4 LL | extern crate b; //~ ERROR: found possibly newer version of crate `a` which `b` depends on
7 = note: perhaps that crate needs to be recompiled?
8 = note: the following crate versions were found:
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0460`.