export RUST_BACKTRACE=1

stack.txt

thread '<main>' panicked at 'index out of bounds: the len is 1339 but the index is 1339', /build/buildd/rust-nightly-201503180407~1ae32de~trusty/src/libcollections/vec.rs:1336
stack backtrace:
   1:     0x7feb92fed9d4 - sys::backtrace::write::h781dfe74347a79cb10C
   2:     0x7feb92ff15df - panicking::on_panic::hafa4f854a38dccfathJ
   3:     0x7feb92fe248a - rt::unwind::begin_unwind_inner::hea0351e9a595ba7f2XI
   4:     0x7feb92fe2b41 - rt::unwind::begin_unwind_fmt::he1aaa061d26e63b9DWI
   5:     0x7feb92ff0fc7 - rust_begin_unwind
   6:     0x7feb9301cb94 - panicking::panic_fmt::h6d00c31e190682d1Tku
   7:     0x7feb9301defc - panicking::panic_bounds_check::hf4aded192863f504Zju
   8:     0x7feb92f07536 - vec::Vec<T>.Index<usize>::index::h1583112471073907091
                        at /build/buildd/rust-nightly-201503180407~1ae32de~trusty/src/libcollections/vec.rs:1336
   9:     0x7feb92eed5ca - draw_poly::h242532f1f6598a17CBa
                        at src/main.rs:218
  10:     0x7feb92ee8960 - main::h2f4435ebb2c5f6b4zaa
                        at src/main.rs:25
  11:     0x7feb92ff4fa8 - rust_try_inner
  12:     0x7feb92ff4f95 - rust_try
  13:     0x7feb92ff312b - rt::lang_start::h8e48fcf70afcbeb6ecJ
  14:     0x7feb92ee8b74 - main
  15:     0x7feb92908ec4 - __libc_start_main
  16:     0x7feb92ee8778 - <unknown>
  17:                0x0 - <unknown>