# ./ubuntu-build-image-main.sh
+ exec
+ exec
++ tee -a /data/build/log/xenial-amd64-1474003938.log
tee: /data/build/log/xenial-amd64-1474003938.log: No such file or directory
+ check_environment
+ [[ ! -d /data/build/xenial ]]
+ mkdir -p /data/build/xenial/etc/dpkg/dpkg.cfg.d /data/build/xenial/dev/pts /data/build/xenial/proc /data/build/xenial/run/tmp /data/build/xenial/sys
+ [[ ! -x /data/build/xenial/ubuntu-build-image-stage2.sh ]]
+ cp -a ubuntu-build-image-stage2.sh /data/build/xenial/ubuntu-build-image-stage2.sh
+ chmod 755 /data/build/xenial/ubuntu-build-image-stage2.sh
+ [[ ! -d /data/build/xenial/data ]]
+ mkdir -p /data/build/xenial/data
+ [[ ! -d /data/build/xenial/etc/dpkg/dpkg.cfg.d ]]
+ [[ ! -d /data/build/xenial/dev/pts ]]
+ [[ ! -d /data/build/xenial/proc ]]
+ [[ ! -d /data/build/xenial/run/tmp ]]
+ [[ ! -d /data/build/xenial/sys ]]
+ [[ ! -d /data/build/log ]]
+ mkdir -p /data/build/log
+ [[ ! -f /data/build/log/xenial-amd64-1474003938.log ]]
+ touch /data/build/log/xenial-amd64-1474003938.log
++ date '+%b%e %T'
+ echo -e 'Sep16 01:32:18 ./ubuntu-build-image-main.sh[9414] INFO: Started to execute the ./ubuntu-build-image-main.sh script.'
+ trap 'die "$(date +%b%e\ %T) $prelog WARNING: Died."' SIGHUP SIGINT SIGTERM
+ cat
+ debootstrap --verbose --arch amd64 --variant=minbase xenial /data/build/xenial http://archive.ubuntu.com/ubuntu/
I: Retrieving InRelease
I: Checking Release signature
I: Valid Release signature (key id 790BC7277767219C42C86F933B4FE6ACC0B21F32)
I: Retrieving Packages
I: Validating Packages
I: Resolving dependencies of required packages...
I: Resolving dependencies of base packages...
I: Found additional base dependencies: gcc-5-base gnupg gpgv libapt-pkg5.0 liblz4-1 libreadline6 libstdc++6 libusb-0.1-4 readline-common ubuntu-keyring
I: Checking component main on http://archive.ubuntu.com/ubuntu...
...
...
...
I: Extracting tzdata...
I: Extracting util-linux...
I: Extracting zlib1g...
++ date '+%b%e %T'
+ die 'Sep16 01:34:36 ./ubuntu-build-image-main.sh[9414] ERROR: Unable to perform debootstrap into /data/build/xenial directory.'
+ echo -e 'Sep16 01:34:36 ./ubuntu-build-image-main.sh[9414] ERROR: Unable to perform debootstrap into /data/build/xenial directory.'
++ date +%s
+ cp -a /data/build/xenial/debootstrap/debootstrap.log /data/build/log/debootstrap-1474004076.log
+ umount_all
+ umount -Rf /data/build/xenial/dev/pts
umount: /data/build/xenial/dev/pts: not mounted
+ umount -Rf /data/build/xenial/dev
umount: /data/build/xenial/dev: not mounted
+ umount -Rf /data/build/xenial/sys
umount: /data/build/xenial/sys: not mounted
+ umount -Rf /data/build/xenial/proc
umount: /data/build/xenial/proc: not mounted
+ housekeeping
+ rm -Rf /data/build/xenial
+ apt-get clean
+ sync
+ exit 1