当Xcode服务机器人尝试执行一个启动了run unit tests的构build时,构build将总是失败。 当我查看日志文件时,同样的错误重复多次: xcsbuildd[1966] <Warning>: [XCSBuildOperation.m:106 7368f310 +2126ms] Preflight connection to /var/XCSControl/com.apple.XCSTestUserPreflightService failed; retrying: No such file or directory 随后几行后面是这些错误信息: xcsbuildd[1966] <Error>: [XCSBuildOperation.m:102 7368f310 +2104ms] Timed out trying to connect to CG Session; giving up after 60 seconds xcsbuildd[1966] <Error>: [XCSOperation.m:33 7368f310 +0ms] Error Domain=XCSBuildServiceDomain Code=0 "Cancelled integration because headless test environment is required […]