17e4528648
Even though this somehow passed on Travis on [the PR](https://github.com/CraneStation/wasmtime/pull/209), it fails on Travis on master, and I can reproduce the failure. The failure is on spec_testsuite/names.wast: ``` $ RUST_BACKTRACE=1 target/debug/wast spec_testsuite/names.wast thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: FromUtf8Error { bytes: [255], error: Utf8Error { valid_up_to: 0, error_len: Some(1) } }', src/libcore/result.rs:999:5 stack backtrace: [...] 9: core::result::Result<T,E>::unwrap at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/result.rs:800 10: wabt::script::jstring_to_rstring at [...]/.cargo/registry/src/github.com-1ecc6299db9ec823/wabt-0.8.0/src/script/mod.rs:261 11: wabt::script::parse_action at [...]/.cargo/registry/src/github.com-1ecc6299db9ec823/wabt-0.8.0/src/script/mod.rs:274 12: wabt::script::ScriptParser<F32,F64>::next at [...]/.cargo/registry/src/github.com-1ecc6299db9ec823/wabt-0.8.0/src/script/mod.rs:504 13: wasmtime_wast::wast::WastContext::run_buffer at wasmtime-wast/src/wast.rs:202 14: wasmtime_wast::wast::WastContext::run_file at wasmtime-wast/src/wast.rs:472 15: wast::main at src/wast.rs:107 [...] ```
This is the wasmtime-wast crate, which contains an implementation of WebAssembly's
"wast" test scripting language, which is used in the
WebAssembly spec testsuite, using wasmtime for execution.