11 files changed, 578 insertions, 0 deletions
diff --git a/taskcluster/docker/recipes/common.sh b/taskcluster/docker/recipes/common.sh
new file mode 100644
index 0000000000..dbf0503887
--- /dev/null
+++ b/taskcluster/docker/recipes/common.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+tooltool_fetch() {
+    cat >manifest.tt
+    python2.7 /setup/tooltool.py fetch
+    rm manifest.tt
+}
diff --git a/taskcluster/docker/recipes/debian-build-system-setup.sh b/taskcluster/docker/recipes/debian-build-system-setup.sh
new file mode 100644
index 0000000000..de4e04cee7
--- /dev/null
+++ b/taskcluster/docker/recipes/debian-build-system-setup.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+cd /setup || exit
+
+. /setup/common.sh
+. /setup/install-mercurial.sh
+
+rm -rf /setup
diff --git a/taskcluster/docker/recipes/debian-test-system-setup.sh b/taskcluster/docker/recipes/debian-test-system-setup.sh
new file mode 100644
index 0000000000..410c0e874d
--- /dev/null
+++ b/taskcluster/docker/recipes/debian-test-system-setup.sh
@@ -0,0 +1,93 @@
+#!/usr/bin/env bash
+
+set -ve
+
+test "$(whoami)" == 'root'
+
+mkdir -p /setup
+cd /setup
+
+apt_packages=()
+
+apt_packages+=('autoconf2.13')
+apt_packages+=('bluez-cups')
+apt_packages+=('build-essential')
+apt_packages+=('ca-certificates')
+apt_packages+=('ccache')
+apt_packages+=('curl')
+apt_packages+=('fonts-kacst')
+apt_packages+=('fonts-kacst-one')
+apt_packages+=('fonts-liberation')
+apt_packages+=('fonts-stix')
+apt_packages+=('fonts-unfonts-core')
+apt_packages+=('fonts-unfonts-extra')
+apt_packages+=('fonts-vlgothic')
+apt_packages+=('g++-multilib')
+apt_packages+=('gcc-multilib')
+apt_packages+=('gir1.2-gnomebluetooth-1.0')
+apt_packages+=('git')
+apt_packages+=('gnome-keyring')
+apt_packages+=('libasound2-dev')
+apt_packages+=('libcanberra-pulse')
+apt_packages+=('libcurl4-openssl-dev')
+apt_packages+=('libdbus-1-dev')
+apt_packages+=('libdbus-glib-1-dev')
+apt_packages+=('libgconf2-dev')
+apt_packages+=('libgtk2.0-dev')
+apt_packages+=('libiw-dev')
+apt_packages+=('libnotify-dev')
+apt_packages+=('libpulse-dev')
+apt_packages+=('libsox-fmt-alsa')
+apt_packages+=('libxt-dev')
+apt_packages+=('libxxf86vm1')
+apt_packages+=('llvm')
+apt_packages+=('llvm-dev')
+apt_packages+=('llvm-runtime')
+apt_packages+=('locales')
+apt_packages+=('locales-all')
+apt_packages+=('net-tools')
+apt_packages+=('qemu-kvm')
+apt_packages+=('rlwrap')
+apt_packages+=('screen')
+apt_packages+=('software-properties-common')
+apt_packages+=('sudo')
+apt_packages+=('tar')
+apt_packages+=('ttf-dejavu')
+apt_packages+=('unzip')
+apt_packages+=('uuid')
+apt_packages+=('wget')
+apt_packages+=('xvfb')
+apt_packages+=('yasm')
+apt_packages+=('zip')
+
+# use Ubuntu's Python-2.7 (2.7.3 on Precise)
+apt_packages+=('python-dev')
+apt_packages+=('python-pip')
+
+apt-get update
+# This allows packages to be installed without human interaction
+export DEBIAN_FRONTEND=noninteractive
+apt-get install -y -f "${apt_packages[@]}"
+
+dpkg-reconfigure locales
+
+. /setup/common.sh
+. /setup/install-mercurial.sh
+
+# pip 19.3 is causing errors building the docker image, pin to 19.2.3 for now.
+# See https://github.com/pypa/pip/issues/7206
+pip install --upgrade pip==19.2.3
+hash -r
+pip install virtualenv==15.2.0
+
+# clean up
+apt-get -y autoremove
+
+# We don't need no docs!
+rm -rf /usr/share/help /usr/share/doc /usr/share/man
+
+cd /
+rm -rf /setup ~/.ccache ~/.cache ~/.npm
+apt-get clean
+apt-get autoclean
+rm -f "$0"
diff --git a/taskcluster/docker/recipes/dot-config/pip/pip.conf b/taskcluster/docker/recipes/dot-config/pip/pip.conf
new file mode 100644
index 0000000000..73c2b2a52c
--- /dev/null
+++ b/taskcluster/docker/recipes/dot-config/pip/pip.conf
@@ -0,0 +1,2 @@
+[global]
+disable-pip-version-check = true
diff --git a/taskcluster/docker/recipes/hgrc b/taskcluster/docker/recipes/hgrc
new file mode 100755
index 0000000000..f6a2f6643c
--- /dev/null
+++ b/taskcluster/docker/recipes/hgrc
@@ -0,0 +1,33 @@
+# By default the progress bar starts after 3s and updates every 0.1s. We
+# change this so it shows and updates every 1.0s.
+# We also tell progress to assume a TTY is present so updates are printed
+# even if there is no known TTY.
+[progress]
+delay = 1.0
+refresh = 1.0
+assume-tty = true
+
+[extensions]
+share =
+sparse =
+robustcheckout = /usr/local/mercurial/robustcheckout.py
+
+[hostsecurity]
+# When running a modern Python, Mercurial will default to TLS 1.1+.
+# When running on a legacy Python, Mercurial will default to TLS 1.0+.
+# There is no good reason we shouldn't be running a modern Python
+# capable of speaking TLS 1.2. And the only Mercurial servers we care
+# about should be running TLS 1.2. So make TLS 1.2 the minimum.
+minimumprotocol = tls1.2
+
+# Settings to make 1-click loaners more useful.
+[extensions]
+histedit =
+rebase =
+
+[diff]
+git = 1
+showfunc = 1
+
+[pager]
+pager = LESS=FRSXQ less
diff --git a/taskcluster/docker/recipes/install-mercurial.sh b/taskcluster/docker/recipes/install-mercurial.sh
new file mode 100755
index 0000000000..2e394c6775
--- /dev/null
+++ b/taskcluster/docker/recipes/install-mercurial.sh
@@ -0,0 +1,134 @@
+#!/bin/bash
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# This script installs and configures Mercurial.
+
+set -e
+
+# Detect OS.
+if [ -f /etc/lsb-release ]; then
+    # Disabled so linting works on Mac
+    # shellcheck disable=SC1091
+    . /etc/lsb-release
+
+    if [ "${DISTRIB_ID}" = "Ubuntu" ] && [[ "${DISTRIB_RELEASE}" = "20.04" ]]; then
+        HG_APT=1
+    elif [ "${DISTRIB_ID}" = "Ubuntu" ] && [[ "${DISTRIB_RELEASE}" = "16.04" || "${DISTRIB_RELEASE}" = "17.10" || "${DISTRIB_RELEASE}" = "18.04" ]]
+    then
+        HG_DEB=1
+        HG_DIGEST=54a215232a340139707a968b58943c2903a8297f0da32f96622d1acab47de6013a5b96d2ca4ba241b1fee142b4098a6cdd236b308a1657c31f42807d7385d327
+        HG_SIZE=278440
+        HG_FILENAME=mercurial_4.8.1_amd64.deb
+
+        HG_COMMON_DIGEST=5577fec8d0f6643d17751b3f6be76b0c2bb888ae1920a8b085245e05110e3d5cfe1c4e9d51e334ab0dd0865fe553c63c704e72852e00b71eb668980cb6b33fa4
+        HG_COMMON_SIZE=2439436
+        HG_COMMON_FILENAME=mercurial-common_4.8.1_all.deb
+    elif [ "${DISTRIB_ID}" = "Ubuntu" ] && [ "${DISTRIB_RELEASE}" = "12.04" ]
+    then
+        echo "Ubuntu 12.04 not supported"
+        exit 1
+    fi
+
+    CERT_PATH=/etc/ssl/certs/ca-certificates.crt
+
+elif [ -f /etc/os-release ]; then
+    # Disabled so linting works on Mac
+    # shellcheck disable=SC1091
+    . /etc/os-release
+
+    if [ "${ID}" = "debian" ]; then
+        if [ -f /usr/bin/pip2 ]; then
+            PIP_PATH=/usr/bin/pip2
+        elif [ -f /usr/bin/pip ]; then
+            # Versions of debian that don't have pip2 have pip pointing to the python2 version.
+            PIP_PATH=/usr/bin/pip
+        else
+            echo "We currently require Python 2.7 and pip to run Mercurial"
+            exit 1
+        fi
+    else
+        echo "Unsupported debian-like system with ID '${ID}' and VERSION_ID '${VERSION_ID}'"
+        exit 1
+    fi
+
+    CERT_PATH=/etc/ssl/certs/ca-certificates.crt
+
+elif [ -f /etc/centos-release ]; then
+    CENTOS_VERSION="$(rpm -q --queryformat '%{VERSION}' centos-release)"
+    if [ "${CENTOS_VERSION}" = "6" ]; then
+        if [ -f /usr/bin/pip2.7 ]; then
+            PIP_PATH=/usr/bin/pip2.7
+        else
+            echo "We currently require Python 2.7 and /usr/bin/pip2.7 to run Mercurial"
+            exit 1
+        fi
+    else
+        echo "Unsupported CentOS version: ${CENTOS_VERSION}"
+        exit 1
+    fi
+
+    CERT_PATH=/etc/ssl/certs/ca-bundle.crt
+fi
+
+if [ -n "${HG_APT}" ]; then
+apt-get install -y mercurial
+elif [ -n "${HG_DEB}" ]; then
+tooltool_fetch <<EOF
+[
+  {
+    "size": ${HG_SIZE},
+    "digest": "${HG_DIGEST}",
+    "algorithm": "sha512",
+    "filename": "${HG_FILENAME}"
+  },
+  {
+    "size": ${HG_COMMON_SIZE},
+    "digest": "${HG_COMMON_DIGEST}",
+    "algorithm": "sha512",
+    "filename": "${HG_COMMON_FILENAME}"
+  }
+]
+EOF
+
+    dpkg -i --auto-deconfigure ${HG_COMMON_FILENAME} ${HG_FILENAME}
+elif [ -n "${HG_RPM}" ]; then
+tooltool_fetch <<EOF
+[
+  {
+    "size": ${HG_SIZE},
+    "digest": "${HG_DIGEST}",
+    "algorithm": "sha512",
+    "filename": "${HG_FILENAME}"
+  }
+]
+EOF
+
+    rpm -i ${HG_FILENAME}
+elif [ -n "${PIP_PATH}" ]; then
+tooltool_fetch <<EOF
+[
+  {
+    "size": 6869733,
+    "digest": "a4485c22f9bb0bb752bf42941f613cb3542c66cbec5d7d49be2090ac544f5dca0f476e4535a56e3f4f4f5fc02fb12739e6d1c7b407264fc2ba4b19b0230b9f93",
+    "algorithm": "sha512",
+    "filename": "mercurial-4.8.1.tar.gz"
+  }
+]
+EOF
+
+   ${PIP_PATH} install mercurial-4.8.1.tar.gz
+else
+    echo "Do not know how to install Mercurial on this OS"
+    exit 1
+fi
+
+chmod 644 /usr/local/mercurial/robustcheckout.py
+
+cat >/etc/mercurial/hgrc.d/cacerts.rc <<EOF
+[web]
+cacerts = ${CERT_PATH}
+EOF
+
+chmod 644 /etc/mercurial/hgrc.d/cacerts.rc
diff --git a/taskcluster/docker/recipes/install-node.sh b/taskcluster/docker/recipes/install-node.sh
new file mode 100644
index 0000000000..5b480a603f
--- /dev/null
+++ b/taskcluster/docker/recipes/install-node.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# This script installs Node v10.
+# XXX For now, this should match the version installed in
+# taskcluster/scripts/misc/repack-node.sh. Later we'll get the ESLint builder
+# to use the linux64-node toolchain directly.
+
+wget -O node.xz --progress=dot:mega https://nodejs.org/dist/v10.23.1/node-v10.23.1-linux-x64.tar.xz
+
+echo '207e5ec77ca655ba6fcde922d6b329acbb09898b0bd793ccfcce6c27a36fdff0  node.xz' | sha256sum -c
+tar -C /usr/local -xJ --strip-components 1 < node.xz
+node -v  # verify
+npm -v
diff --git a/taskcluster/docker/recipes/prepare_openjdk.sh b/taskcluster/docker/recipes/prepare_openjdk.sh
new file mode 100755
index 0000000000..828c8dc697
--- /dev/null
+++ b/taskcluster/docker/recipes/prepare_openjdk.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+set -x
+
+# Debian 10 doesn't have openjdk-8, so add the Debian 9 repository, which contains it.
+if grep -q ^10\\. /etc/debian_version; then
+	sed s/buster/stretch/ /etc/apt/sources.list | tee /etc/apt/sources.list.d/stretch.list
+	apt-get update
+fi
diff --git a/taskcluster/docker/recipes/ubuntu1804-test-system-setup-base.sh b/taskcluster/docker/recipes/ubuntu1804-test-system-setup-base.sh
new file mode 100644
index 0000000000..03ed14be83
--- /dev/null
+++ b/taskcluster/docker/recipes/ubuntu1804-test-system-setup-base.sh
@@ -0,0 +1,167 @@
+#!/usr/bin/env bash
+
+set -ve
+
+test "$(whoami)" == 'root'
+
+# To speed up docker image build times as well as number of network/disk I/O
+# build a list of packages to be installed nad call it in one go.
+apt_packages=()
+
+apt_packages+=('autoconf2.13')
+apt_packages+=('bluez-cups')
+apt_packages+=('build-essential')
+apt_packages+=('ca-certificates')
+apt_packages+=('ccache')
+apt_packages+=('compiz')
+apt_packages+=('curl')
+apt_packages+=('fontconfig')
+apt_packages+=('fonts-kacst')
+apt_packages+=('fonts-kacst-one')
+apt_packages+=('fonts-liberation')
+apt_packages+=('fonts-stix')
+apt_packages+=('fonts-unfonts-core')
+apt_packages+=('fonts-unfonts-extra')
+apt_packages+=('fonts-vlgothic')
+apt_packages+=('g++-multilib')
+apt_packages+=('gcc-multilib')
+apt_packages+=('gir1.2-gnomebluetooth-1.0')
+apt_packages+=('git')
+apt_packages+=('gnome-icon-theme')
+apt_packages+=('gstreamer1.0-gtk3')
+apt_packages+=('gstreamer1.0-plugins-base')
+apt_packages+=('gstreamer1.0-plugins-good')
+apt_packages+=('gstreamer1.0-tools')
+apt_packages+=('gstreamer1.0-pulseaudio')
+apt_packages+=('language-pack-en-base')
+apt_packages+=('libc6-dbg')
+apt_packages+=('libasound2-dev')
+apt_packages+=('libavcodec-extra57')
+apt_packages+=('libcanberra-gtk3-module')
+apt_packages+=('libcanberra-pulse')
+apt_packages+=('libcurl4-openssl-dev')
+apt_packages+=('libdbus-1-dev')
+apt_packages+=('libdbus-glib-1-dev')
+apt_packages+=('libfreetype6')
+apt_packages+=('libgconf2-dev')
+apt_packages+=('libgl1-mesa-dri')
+apt_packages+=('libgl1-mesa-glx')
+apt_packages+=('libgstreamer-plugins-base1.0-dev')
+apt_packages+=('libgstreamer1.0-dev')
+apt_packages+=('libgtk2.0-dev')
+apt_packages+=('libgtk-3-0')
+apt_packages+=('libiw-dev')
+apt_packages+=('libx11-xcb1')
+apt_packages+=('libxcb1')
+apt_packages+=('libxcb-render0')
+apt_packages+=('libxcb-shm0')
+apt_packages+=('libxcb-glx0')
+apt_packages+=('libxcb-shape0')
+apt_packages+=('libnotify-dev')
+apt_packages+=('libpulse0')
+apt_packages+=('libpulse-dev')
+apt_packages+=('libxt-dev')
+apt_packages+=('libxxf86vm1')
+apt_packages+=('llvm')
+apt_packages+=('llvm-dev')
+apt_packages+=('llvm-runtime')
+apt_packages+=('mesa-common-dev')
+apt_packages+=('net-tools')
+apt_packages+=('pulseaudio')
+apt_packages+=('pulseaudio-module-bluetooth')
+apt_packages+=('pulseaudio-module-gconf')
+apt_packages+=('python-dev')
+apt_packages+=('python-pip')
+apt_packages+=('python3-pip')
+apt_packages+=('qemu-kvm')
+apt_packages+=('rlwrap')
+apt_packages+=('screen')
+apt_packages+=('software-properties-common')
+apt_packages+=('sudo')
+apt_packages+=('ttf-dejavu')
+apt_packages+=('ubuntu-desktop')
+apt_packages+=('unzip')
+apt_packages+=('uuid')
+apt_packages+=('wget')
+apt_packages+=('xvfb')
+apt_packages+=('xwit')
+apt_packages+=('yasm')
+apt_packages+=('zip')
+
+# xvinfo for test-linux.sh to monitor Xvfb startup
+apt_packages+=('x11-utils')
+
+# Bug 1232407 - this allows the user to start vnc
+apt_packages+=('x11vnc')
+
+# Bug 1176031 - need `xset` to disable screensavers
+apt_packages+=('x11-xserver-utils')
+
+# Build a list of packages to install from the multiverse repo.
+apt_packages+=('ubuntu-restricted-extras')
+
+# APT update takes very long on Ubuntu. Run it at the last possible minute.
+apt-get update
+
+# This allows ubuntu-desktop to be installed without human interaction.
+# Also force the cleanup after installation of packages to reduce image size.
+export DEBIAN_FRONTEND=noninteractive
+apt-get install -y --allow-downgrades -f "${apt_packages[@]}"
+
+# Enable i386 packages
+dpkg --add-architecture i386
+apt-get update
+
+# Make sure we have libraries for 32-bit tests
+apt_packages=()
+apt_packages+=('libavcodec-extra57:i386')
+apt_packages+=('libdbus-glib-1-2:i386')
+apt_packages+=('libpulse0:i386')
+apt_packages+=('libxt6:i386')
+apt_packages+=('libxtst6:i386')
+apt_packages+=('libsecret-1-0:i386')
+apt_packages+=('libgtk2.0-0:i386')
+apt_packages+=('libgtk-3-0:i386')
+apt_packages+=('libx11-xcb1:i386')
+apt_packages+=('libxcb1:i386')
+
+apt-get install -y --allow-downgrades -f "${apt_packages[@]}"
+rm -rf /var/lib/apt/lists/*
+
+# Build a list of packages to purge from the image.
+apt_packages=()
+apt_packages+=('*cheese*')
+apt_packages+=('example-content')
+apt_packages+=('git')
+apt_packages+=('gnome-calendar')
+apt_packages+=('gnome-initial-setup')
+apt_packages+=('gnome-mahjongg')
+apt_packages+=('gnome-mines')
+apt_packages+=('gnome-sudoku')
+apt_packages+=('libx11-doc')
+apt_packages+=('manpages-dev')
+apt_packages+=('orca')
+apt_packages+=('rhythmbox')
+apt_packages+=('thunderbird')
+apt_packages+=('ubuntu-release-upgrader*')
+apt_packages+=('update-manager-core')
+apt_packages+=('update-manager')
+apt_packages+=('yelp')
+
+# Purge unnecessary packages
+apt-get purge -y -f "${apt_packages[@]}"
+
+# Clear apt cache one last time
+rm -rf /var/cache/apt/archives
+
+# We don't need no docs!
+rm -rf /usr/share/help /usr/share/doc /usr/share/man
+
+# Remove all locale files other than en_US.UTF-8
+rm -rf /usr/share/locale/   /usr/share/locale-langpack/     /usr/share/locales/
+
+# Further cleanup
+apt-get -y autoremove
+apt-get clean
+apt-get autoclean
+rm -f "$0"
diff --git a/taskcluster/docker/recipes/ubuntu1804-test-system-setup.sh b/taskcluster/docker/recipes/ubuntu1804-test-system-setup.sh
new file mode 100644
index 0000000000..d5b78985c2
--- /dev/null
+++ b/taskcluster/docker/recipes/ubuntu1804-test-system-setup.sh
@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+set -ve
+
+test "$(whoami)" == 'root'
+
+cd /setup
+
+# Install tooltool, mercurial and node now that dependencies are in place.
+. /setup/common.sh
+. /setup/install-mercurial.sh
+. /setup/install-node.sh
+
+# Upgrade pip and install virtualenv to specified versions.
+pip install --upgrade pip==19.2.3
+hash -r
+pip install virtualenv==15.2.0
+
+pip install zstandard==0.13.0
+pip3 install zstandard==0.13.0
+
+pip install psutil==5.7.0
+pip3 install psutil==5.7.0
+
+# Cleanup
+cd /
+rm -rf /setup ~/.ccache ~/.cache ~/.npm
+rm -f "$0"
diff --git a/taskcluster/docker/recipes/xvfb.sh b/taskcluster/docker/recipes/xvfb.sh
new file mode 100644
index 0000000000..6e0e79f7d4
--- /dev/null
+++ b/taskcluster/docker/recipes/xvfb.sh
@@ -0,0 +1,75 @@
+#! /bin/bash -x
+
+set -x
+
+fail() {
+    echo # make sure error message is on a new line
+    echo "[xvfb.sh:error]" "${@}"
+    exit 1
+}
+
+cleanup_xvfb() {
+    # When you call this script with START_VNC or TASKCLUSTER_INTERACTIVE
+    # we make sure we do not kill xvfb so you do not lose your connection
+    local xvfb_pid=`pidof Xvfb`
+    local vnc=${START_VNC:-false}
+    local interactive=${TASKCLUSTER_INTERACTIVE:-false}
+    if [ -n "$xvfb_pid" ] && [[ $vnc == false ]] && [[ $interactive == false ]] ; then
+        kill $xvfb_pid || true
+        screen -XS xvfb quit || true
+    fi
+}
+
+# Attempt to start xvfb in a screen session with the given resolution and display
+# number.  Up to 5 attempts will be made to start xvfb with a short delay
+# between retries
+try_xvfb() {
+    screen -dmS xvfb Xvfb :$2 -nolisten tcp -screen 0 $1 \
+       > ~/artifacts/xvfb/xvfb.log 2>&1
+    export DISPLAY=:$2
+
+    # Only error code 255 matters, because it signifies that no
+    # display could be opened. As long as we can open the display
+    # tests should work. We'll retry a few times with a sleep before
+    # failing.
+    local retry_count=0
+    local max_retries=5
+    xvfb_test=0
+    until [ $retry_count -gt $max_retries ]; do
+        xvinfo || xvfb_test=$?
+        if [ $xvfb_test != 255 ]; then
+            retry_count=$(($max_retries + 1))
+        else
+            retry_count=$(($retry_count + 1))
+            echo "Failed to start Xvfb, retry: $retry_count"
+            sleep 2
+        fi
+    done
+    if [ $xvfb_test == 255 ]; then
+        return 1
+    else
+        return 0
+    fi
+}
+
+start_xvfb() {
+    set +e
+    mkdir -p ~/artifacts/xvfb
+    local retry_count=0
+    local max_retries=2
+    local success=1
+    until [ $retry_count -gt $max_retries ]; do
+        try_xvfb $1 $2
+        success=$?
+        if [ $success -eq 0 ]; then
+            retry_count=$(($max_retries + 1))
+        else
+            retry_count=$(($retry_count + 1))
+            sleep 10
+        fi
+    done
+    set -e
+    if [ $success -eq 1 ]; then
+        fail "Could not start xvfb after ${max_retries} attempts"
+    fi
+}