version bump: 1.0.0 -> (breaking) -> 2.0.0
error: path changes to `Abc`
 --> removal_use/old.rs:1:1
  |
1 | pub struct Abc;
  | ^^^^^^^^^^^^^^
  |
  = warning: removed definition (breaking)

error: path changes to `Bcd`
 --> removal_use/old.rs:3:1
  |
3 | pub trait Bcd {}
  | ^^^^^^^^^^^^^
  |
  = warning: removed definition (breaking)

error: breaking changes in `Def`
 --> removal_use/new.rs:1:1
  |
1 | pub struct Def<'a> {
  | ^^^^^^^^^^^^^^^^^^
  |
  = warning: type error: expected struct `old::Abc`, found `()` (breaking)
  = warning: type error: expected trait object `dyn old::Bcd`, found `()` (breaking)

error: aborting due to 3 previous errors