This is my
xctool -project ProjectName.xcodeproj -scheme ProjectName build -sdk iphonesimulator
$ xctool -project ProjectName.xcodeproj -scheme ProjectName build -sdk iphonesimulator
ERROR: Cannot find schemes. Please consider creating shared schemes in Xcode.
TIP: This might happen if you're relying on Xcode to autocreate your schemes
and your scheme files don't yet exist. xctool, like xcodebuild, isn't able to
automatically create schemes. We recommend disabling "Autocreate schemes"
in your workspace/project, making sure your existing schemes are marked as
"Shared", and making sure they're checked into source control.
This problem is easy to solve:
Go to your project scheme and click
Shared for your scheme
Close, commit and push.
Problem Solved. Now Travis is working without problems.