Blue-Ocean fail

Blue-Ocean.txt

node() {
  stage('Build') {
    println 'I prepare the build for the parallel steps'
  }

  stage('Test') {
   parallel (
 "win7-vs2012" : { stage("checkout") { }; stage("build") { }; stage("test") { } },
 "win10-vs2015" : { stage("checkout") { }; stage("build") { }; stage("test") { }},
 "linux-gcc5" : { stage("checkout") { }; stage("build") { }; stage("test") { } }
)
  }
}