<error>
message: High-level message
class:   `rlang_error`
backtrace:
 ─rlang::catch_cnd(a())
 ─rlang:::a()
 ─rlang:::b()
 ─rlang:::c()
<error: parent>
message: Low-level message
class:   `rlang_error`
backtrace:
 ─rlang:::f()
 ─rlang:::g()
 ─rlang:::h()
Call `summary(rlang::last_error())` to see the full backtrace
