From a build today:
Chocolatey installed 1/1 package(s). 0 package(s) failed.
See the log for details (C:\ProgramData\chocolatey\logs\chocolatey.log).
appveyor DownloadFile http://www.us.apache.org/dist//ant/binaries/apache-ant-1.9.6-bin.zip
Error downloading file: The remote server returned an error: (404) Not Found.
Command exited with code 2
I went the directory and 1.9.7 is there, not 1.9.6: