Can't install with the recent rubygems

[nobu]

https://github.com/ruby/digest/runs/3521094622?check_suite_focus=true

[olleolleolle]

I ran #26 today, and got to green 🟢 - have things changed?

[nobu]

Just ignoring errors by 76ae8c7, and still happens as https://github.com/ruby/digest/runs/3730642042?check_suite_focus=true#step:8:7.

[olleolleolle]

@nobu Thanks for explaining! 👀 Very curious.

[deivid-rodriguez]

I tried to reproduce this, but CI seems to be passing just fine. Maybe this has been fixed in ruby-head since the last time it failed?

[nobu]

Indeed, 775793b failed and 594cc4d passed, but only "bump up" was between the two commits.