There is timeout in the test-suite, likely on all arches

...
Executing(%check): /bin/sh -e /var/tmp/rpm-tmp.1yCoiZ
+ umask 022
+ cd /builddir/build/BUILD
+ cd grpc-go-b062a3c003c22bfef58fa99d689e6a892b408f9d
+ export GOPATH=/builddir/build/BUILDROOT/golang-github-grpc-grpc-go-0-0.8.gitb062a3c.fc25.x86_64//usr/share/gocode:/usr/share/gocode
+ GOPATH=/builddir/build/BUILDROOT/golang-github-grpc-grpc-go-0-0.8.gitb062a3c.fc25.x86_64//usr/share/gocode:/usr/share/gocode
+ go test -compiler gc -ldflags '' google.golang.org/grpc
ok  	google.golang.org/grpc	0.344s
+ go test -compiler gc -ldflags '' google.golang.org/grpc/benchmark
ok  	google.golang.org/grpc/benchmark	0.100s
+ go test -compiler gc -ldflags '' google.golang.org/grpc/metadata
ok  	google.golang.org/grpc/metadata	0.003s
+ go test -compiler gc -ldflags '' google.golang.org/grpc/test
--- FAIL: TestReconnectTimeout (7.68s)
	end2end_test.go:1990: Leaked goroutine: goroutine 1 [chan receive]:
		testing.(*T).Run(0xc42009e0c0, 0x86759e, 0x14, 0x89a2e0, 0xc42017bd20)
			/usr/lib/golang/src/testing/testing.go:647 +0x316
		testing.RunTests.func1(0xc42009e0c0)
			/usr/lib/golang/src/testing/testing.go:793 +0x6d
		testing.tRunner(0xc42009e0c0, 0xc42003fe30)
			/usr/lib/golang/src/testing/testing.go:610 +0x81
		testing.RunTests(0x89a4d8, 0xa5b620, 0x20, 0x20, 0xc42017bf20)
			/usr/lib/golang/src/testing/testing.go:799 +0x2f0
		testing.(*M).Run(0xc42003fef8, 0x4)
			/usr/lib/golang/src/testing/testing.go:743 +0x85
		main.main()
			google.golang.org/grpc/test/_test/_testmain.go:116 +0xc2
2016/07/21 13:27:52 transport: http2Client.notifyError got notified that the client transport was broken EOF.
2016/07/21 13:27:52 transport: http2Client.notifyError got notified that the client transport was broken EOF.
2016/07/21 13:27:52 grpc: Conn.transportMonitor exits due to: grpc: the client connection is closing
2016/07/21 13:27:52 transport: http2Server.HandleStreams failed to read frame: read tcp 127.0.0.1:44345->127.0.0.1:35132: use of closed network connection
2016/07/21 13:27:52 transport: http2Server.HandleStreams failed to receive the preface from client: read tcp 127.0.0.1:39455->127.0.0.1:55224: use of closed network connection
2016/07/21 13:27:54 transport: http2Client.notifyError got notified that the client transport was broken EOF.
2016/07/21 13:28:28 grpc: Conn.transportMonitor exits due to: grpc: the client connection is closing
2016/07/21 13:28:30 transport: http2Client.notifyError got notified that the client transport was broken EOF.
2016/07/21 13:28:30 transport: http2Client.notifyError got notified that the client transport was broken EOF.
FAIL
FAIL	google.golang.org/grpc/test	65.529s
RPM build errors:
error: Bad exit status from /var/tmp/rpm-tmp.1yCoiZ (%check)
    Bad exit status from /var/tmp/rpm-tmp.1yCoiZ (%check)
Child return code was: 1
EXCEPTION: [Error()]
...

for full logs please see http://koji.fedoraproject.org/koji/taskinfo?taskID=14969842

a scratch build on s390x with the same error is http://s390.koji.fedoraproject.org/koji/taskinfo?taskID=2300972

Version-Release number of selected component (if applicable):
golang-github-grpc-grpc-go-0-0.8.gitb062a3c.fc25