"ant -version" failed and exited with 127 during

Hi, it is tolds that ant is installed by default on the windows os. I need to run a ant command then a choco one (to release choco package)

But the runtime complains about :

$ ant -version
The command "ant -version" failed and exited with 127 during .
Your build has been stopped.
/c/Users/travis/.travis/job_stages: line 104: ant: command not found

Related job is here : https://travis-ci.org/adriens/chocolatey-schemacrawler/builds/449556808

Any idea what I did wrong ?

Thank you in advance for your help.