<error>
message: High-level message
class:   `rlang_error`
backtrace:
  1. rlang::catch_cnd(a())
  8. rlang:::a()
  9. rlang:::b()
 10. rlang:::c()
<error: parent>
message: Low-level message
class:   `rlang_error`
backtrace:
 1. rlang:::f()
 2. rlang:::g()
 3. rlang:::h()
Call `rlang::last_trace()` to see the full backtrace
