linux-s390x-ibm at a9d9b5570964c2c2ef07992150174bd3d1b2d891 building sync at 506c70f97318aa991ec5a898685660c880c166ca

:: Running /data/golang/workdir/go/bin/go with args ["/data/golang/workdir/go/bin/go" "test" "-short" "-timeout=50m0s" "./..."] and env ["LANG=en_US.UTF-8" "HOME=/root" "LOGNAME=root" "USER=root" "SHELL=/bin/sh" "INVOCATION_ID=371fe830ea844d668a24def1d5c7c6ce" "JOURNAL_STREAM=9:1039139619" "META_BUILDLET_BINARY_URL=https://storage.googleapis.com/go-builder-data/buildlet.linux-s390x" "GO_STAGE0_NET_DELAY=100ms" "GO_STAGE0_DL_DELAY=100ms" "WORKDIR=/data/golang/workdir" "GOROOT_BOOTSTRAP=/data/golang/workdir/go1.4" "GO_BUILDER_NAME=linux-s390x-ibm" "GO_BUILDER_FLAKY_NET=1" "GO_TEST_TIMEOUT_SCALE=5" "GOROOT=/data/golang/workdir/go" "GOPATH=/data/golang/workdir/gopath" "GOPROXY=https://proxy.golang.org" "GO_DISABLE_OUTBOUND_NETWORK=0" "TMPDIR=/data/golang/workdir/tmp" "GOCACHE=/data/golang/workdir/gocache" "GOPLSCACHE=/data/golang/workdir/goplscache" "PATH=/data/golang/workdir/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin" "PWD=/data/golang/workdir/gopath/src/golang.org/x/sync"] in dir /data/golang/workdir/gopath/src/golang.org/x/sync

ok  	golang.org/x/sync/errgroup	0.003s
ok  	golang.org/x/sync/semaphore	5.680s
ok  	golang.org/x/sync/singleflight	0.027s
ok  	golang.org/x/sync/syncmap	0.023s