↳ bool $(true)thread 'main' panicked at 'byte index 1 is out of bounds of ``', src/libcore/str/mod.rs:2010:9stack backtrace: 0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39 1: std::panicking::default_hook::{{closure}} at src/libstd/sys_common/backtrace.rs:70 at src/libstd/sys_common/backtrace.rs:58 at src/libstd/panicking.rs:200 2: std::panicking::rust_panic_with_hook at src/libstd/panicking.rs:215 at src/libstd/panicking.rs:478 3: std::panicking::continue_panic_fmt at src/libstd/panicking.rs:385 4: rust_begin_unwind at src/libstd/panicking.rs:312 5: core::panicking::panic_fmt at src/libcore/panicking.rs:85 6: core::str::slice_error_fail at src/libcore/str/mod.rs:0 7: core::str::traits::<impl core::slice::SliceIndex<str> for core::ops::range::Range<usize>>::index::{{closure}} 8: ion_shell::builtins::builtin_bool 9: <ion_shell::shell::Shell<'a> as ion_shell::shell::flow::FlowLogic<'a>>::execute_statement 10: <ion_shell::shell::Shell<'a> as ion_shell::shell::flow::FlowLogic<'a>>::on_command 11: ion_shell::shell::binary::InteractiveBinary::execute_interactive 12: ion::main 13: std::rt::lang_start::{{closure}} 14: main 15: __libc_start_main 16: _startAborted