version bump: 1.0.0 -> (breaking) -> 2.0.0
error: path changes to `qux1`
  --> macros/old.rs:15:1
   |
15 | pub macro qux1() { Item }
   | ^^^^^^^^^^^^^^
   |
   = warning: removed definition (breaking)

error: path changes to `qux2`
  --> macros/old.rs:18:1
   |
18 | macro_rules! qux2 {
   | ^^^^^^^^^^^^^^^^^
   |
warning: removed path (breaking)
  --> macros/old.rs:18:1
   |
18 | / macro_rules! qux2 {
19 | |     () => {
20 | |         Item
21 | |     }
22 | | }
   | |_^

warning: path changes to `quux1`
  --> macros/new.rs:15:1
   |
15 | pub macro quux1() { Item }
   | ^^^^^^^^^^^^^^^
   |
   = note: added definition (technically breaking)

warning: path changes to `quux2`
  --> macros/new.rs:18:1
   |
18 | macro_rules! quux2 {
   | ^^^^^^^^^^^^^^^^^^
   |
note: added path (technically breaking)
  --> macros/new.rs:18:1
   |
18 | / macro_rules! quux2 {
19 | |     () => {
20 | |         Item
21 | |     }
22 | | }
   | |_^

error: aborting due to 2 previous errors; 2 warnings emitted