improve reliability of xfer test

20 jobs for 71-xfer-system-test-fails-intermittently in 20 minutes and 45 seconds (queued for 21 seconds)
Status Job ID Name Coverage
  Build
passed #2224
linux docker
build:debian:buster:i386

00:11:44

passed #2221
linux docker
build:debian:jessie:amd64

00:10:51

passed #2222
linux docker
build:debian:jessie:i386

00:10:50

passed #2225
linux docker
build:debian:sid:amd64

00:11:23

passed #2226
linux docker
build:debian:sid:i386

00:11:48

passed #2223
linux docker
build:debian:stretch:amd64

00:11:08

passed #2227
linux docker
build:ubuntu:trusty:amd64

00:10:52

passed #2228
linux docker
build:ubuntu:xenial:i386

00:11:07

canceled #2214
docker linux
build:debian:buster:i386

canceled #2211
docker linux
build:debian:jessie:amd64

canceled #2212
docker linux
build:debian:jessie:i386

canceled #2215
docker linux
build:debian:sid:amd64

canceled #2216
docker linux
build:debian:sid:i386

00:00:11

canceled #2213
docker linux
build:debian:stretch:amd64

canceled #2217
docker linux
build:ubuntu:trusty:amd64

00:00:14

canceled #2218
docker linux
build:ubuntu:xenial:i386

00:00:14

 
  Test
passed #2229
docker linux
test:debian:sid:amd64

00:08:54

passed #2230
docker linux
test:debian:sid:i386

00:08:44

canceled #2219
linux docker
test:debian:sid:amd64

canceled #2220
linux docker
test:debian:sid:i386