in logger/src/main/scala/jetbrains/buildServer/sbtlogger/TCLogAppender.scala [125:130]
private def printServerMessage(messageName: String, attributes: (String, String)*) {
val attributeString = attributes.map {
case (k, v) => s"$k='${MapSerializerUtil.escapeStr(v,MapSerializerUtil.STD_ESCAPER2)}'"
}.mkString(" ")
println(s"##teamcity[$messageName $attributeString]")
}