thread 'main' panicked at 'panicking from libstd', $DIR/panic1.rs:8:5
stack backtrace:
   0: std::rt::begin_panic
RUSTLIB/std/src/panicking.rs:505:12
   1: main
             at $DIR/panic1.rs:8:5
   2: <fn() as std::ops::FnOnce<()>>::call_once - shim(fn())
RUSTLIB/core/src/ops/function.rs:227:5
   3: std::rt::lang_start::{closure#0}
RUSTLIB/std/src/rt.rs:66:18
   4: std::ops::function::impls::call_once
RUSTLIB/core/src/ops/function.rs:259:13
   5: std::panicking::r#try::do_call
RUSTLIB/std/src/panicking.rs:381:40
   6: std::panicking::r#try
RUSTLIB/std/src/panicking.rs:345:19
   7: std::panic::catch_unwind
RUSTLIB/std/src/panic.rs:382:14
   8: std::rt::lang_start_internal
RUSTLIB/std/src/rt.rs:51:25
   9: std::rt::lang_start
RUSTLIB/std/src/rt.rs:65:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.