running 1 test
NilClass : OK
NilClass : ERROR: Method not found: undefined method `method_defined?` for Class
NilClass#& : ERROR: Method not found: undefined method `&` for NilClass
NilClass#^ : ERROR: Method not found: undefined method `^` for NilClass
NilClass#| : ERROR: Method not found: undefined method `|` for NilClass
NilClass#nil? : OK
NilClass#to_s : OK
NilClass#=~ : ERROR: Method not found: undefined method `=~` for NilClass
safe navigation : OK
OK: 4, FAIL: 0, ERROR: 5, WARN: 0, SKIP: 0, STRESS: 0

thread 'spec_nil' (2529) panicked at mrubyedge/tests/mruby_spec/mod.rs:78:5:
nil.rb: upstream assertions failed
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
test spec_nil ... FAILED

failures:

failures:
    spec_nil

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