gistfile1.txt

$ RUST_BACKTRACE=1 cargo run --bin wasmtime -- testload.wasm --function=load
    Finished dev [unoptimized + debuginfo] target(s) in 0.21s                                                                                                                                                                            
     Running `target/debug/wasmtime testload.wasm --function=load`
thread '<unnamed>' panicked at 'called `Option::unwrap()` on a `None` value', libcore/option.rs:355:21
stack backtrace:
   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
             at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::print
             at libstd/sys_common/backtrace.rs:71
             at libstd/sys_common/backtrace.rs:59
   2: std::panicking::default_hook::{{closure}}
             at libstd/panicking.rs:211
   3: std::panicking::default_hook
             at libstd/panicking.rs:227
   4: <std::panicking::begin_panic::PanicPayload<A> as core::panic::BoxMeUp>::get
             at libstd/panicking.rs:476
   5: std::panicking::continue_panic_fmt
             at libstd/panicking.rs:390
   6: std::panicking::try::do_call
             at libstd/panicking.rs:325
   7: core::ptr::drop_in_place
             at libcore/panicking.rs:77
   8: core::ptr::drop_in_place
             at libcore/panicking.rs:52
   9: wasmtime_execute::execute::execute_by_index
             at libcore/macros.rs:20
  10: wasmtime_execute::traphandlers::Unwind::{{closure}}
             at lib/execute/src/traphandlers.rs:45
  11: wasmtime_execute::memory::PtrLen::as_mut_slice
             at libstd/thread/local.rs:300
  12: wasmtime_execute::memory::PtrLen::as_mut_slice
             at libstd/thread/local.rs:254
  13: alloc::str::<impl alloc::borrow::ToOwned for str>::to_owned
             at lib/execute/src/traphandlers.rs:44
  14: _ZL10HandleTrapP17macos_x64_context
             at ./lib/execute/signalhandlers/SignalHandlers.cpp:408
  15: _ZL19HandleMachExceptionRK16ExceptionRequest
             at ./lib/execute/signalhandlers/SignalHandlers.cpp:525
  16: _ZL26MachExceptionHandlerThreadPv
             at ./lib/execute/signalhandlers/SignalHandlers.cpp:574
  17: _pthread_body
  18: _pthread_start
fatal runtime error: failed to initiate panic, error 5
Abort trap: 6