error building R package

Simon Bond's Avatar

Simon Bond

23 Nov, 2020 01:38 PM

C:\rtools40\usr\bin\uname.exe: *** fatal error - cygheap base mismatch detected -

Is the start of the error message in .
This happens in response to the command " install_deps" in the appveyor.yml

Nothing was changed in the code, as only an issue was added within github. Please could you advise how to fix


  1. Support Staff 1 Posted by Feodor Fitsner on 24 Nov, 2020 03:09 AM

    Feodor Fitsner's Avatar

    The last successful build was on April 6, 2020. The project is still running on the same Visual Studio 2015 image which was last updated on 17th of January, 2020. So, the current failure could be because of some "upstream" updates downloading during the build.

Reply to this discussion

Internal reply

Formatting help / Preview (switch to plain text) No formatting (switch to Markdown)

Attaching KB article:


Attached Files

You can attach files up to 10MB

If you don't have an account yet, we need to confirm you're human and not a machine trying to post spam.

Keyboard shortcuts


? Show this help
ESC Blurs the current field

Comment Form

r Focus the comment reply box
^ + ↩ Submit the comment

You can use Command ⌘ instead of Control ^ on Mac