AppVeyor nightly builds failing

The problem appears to be:
node :
At line:15 char:1
+ node bootstrap.js hexa.json
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError

C:\projects\hexa\bootstrap.js:8331
			throw new CompilerErrors(this.hints);
			^
[C:\projects\hexa\source\compiler\normalizer.hexa:190:9]: Expected `case` before `return`
node : module.js:550
At line:16 char:1
+ node hexa-node.js hexa.json
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (module.js:550:String) [], RemoteException
    + FullyQualifiedErrorId : NativeCommandError
 
    throw err;
    ^
Error: Cannot find module 'C:\projects\hexa\hexa-node.js'
    at Function.Module._resolveFilename (module.js:548:15)
    at Function.Module._load (module.js:475:25)
    at Function.Module.runMain (module.js:694:10)
    at startup (bootstrap_node.js:204:16)
    at bootstrap_node.js:625:3
node : module.js:550
At line:17 char:1
+ node hexa-node.js hexa.json
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (module.js:550:String) [], RemoteException
    + FullyQualifiedErrorId : NativeCommandError
 
    throw err;
    ^
Error: Cannot find module 'C:\projects\hexa\hexa-node.js'
    at Function.Module._resolveFilename (module.js:548:15)
    at Function.Module._load (module.js:475:25)
    at Function.Module.runMain (module.js:694:10)
    at startup (bootstrap_node.js:204:16)
    at bootstrap_node.js:625:3