$DIR/backtrace-api.rs:19:42 (func_c)
$DIR/backtrace-api.rs:18:36 (func_b::<u8>)
$DIR/backtrace-api.rs:17:33 (func_a)
$DIR/backtrace-api.rs:23:18 (main)
RUSTLIB/src/rust/library/core/src/ops/function.rs:LL:COL (<fn() as std::ops::FnOnce<()>>::call_once - shim(fn()))
RUSTLIB/src/rust/library/std/src/sys_common/backtrace.rs:LL:COL (std::sys_common::backtrace::__rust_begin_short_backtrace::<fn(), ()>)
RUSTLIB/src/rust/library/std/src/rt.rs:LL:COL (std::rt::lang_start::<()>::{{closure}}#0)
RUSTLIB/src/rust/library/core/src/ops/function.rs:LL:COL (std::ops::function::impls::<impl std::ops::FnOnce<()> for &dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe>::call_once)
RUSTLIB/src/rust/library/std/src/panicking.rs:LL:COL (std::panicking::r#try::do_call::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>)
RUSTLIB/src/rust/library/std/src/panicking.rs:LL:COL (std::panicking::r#try::<i32, &dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe>)
RUSTLIB/src/rust/library/std/src/panic.rs:LL:COL (std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>)
RUSTLIB/src/rust/library/std/src/rt.rs:LL:COL (std::rt::lang_start_internal)
RUSTLIB/src/rust/library/std/src/rt.rs:LL:COL (std::rt::lang_start::<()>)