running 1 test

thread 'spec_vformat' (2584) panicked at mrubyedge/tests/mruby_spec/mod.rs:48:51:
called `Result::unwrap()` on an `Err` value: InvalidFormat
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
test spec_vformat ... FAILED

failures:

failures:
    spec_vformat

test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 49 filtered out; finished in 0.00s