upstart feedback is confusing when .conf file contains syntax errors

When an `upstart` script in `/etc/init/` contains a line like `NAME=value` the feedback of `sudo start myservice` fails with a feedback that indicates that the service doesn't exist, rather than telling that it contains a syntax error. Example output:

    $ start myservice
    start: Unknown job: myservice
    $ service myservice start
    myservice: unrecognized service

An example of a failing script is

    # myservice - myservice job file

    description "my service description"
    author "Me <myself@i.com>"

    # Stanzas
    #
    # Stanzas control when and how a process is started and stopped
    # See a list of stanzas here: http://upstart.ubuntu.com/wiki/Stanzas#respawn

    # When to start the service
    start on runlevel [2345]

    # When to stop the service
    stop on runlevel [016]

    # Automatically restart process if crashed
    respawn

    # Essentially lets upstart know the process will detach itself to the background
    expect fork

    # Run before process
    pre-start script
        [ -d /var/run/myservice ] || mkdir -p /var/run/myservice
        echo "Put bash code here"
    end script

    # Start the process
    exec echo "Hello world!"

After fixing the syntax error the `start` and `service` command refuse to start the service.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: upstart 1.13.2-0ubuntu2
Uname: Linux 4.0.0-040000-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
ApportVersion: 2.14.7-0ubuntu8.4
Architecture: amd64
Date: Tue Apr 21 13:01:42 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-04-20 (0 days ago)
InstallationMedia: Ubuntu-Server 14.10 "Utopic Unicorn" - Release amd64 (20141022.2)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdline: BOOT_IMAGE=/vmlinuz-4.0.0-040000-generic root=/dev/mapper/root-root ro rootflags=subvol=@ nomdmonddf nomdmonisw
SourcePackage: upstart
UpgradeStatus: No upgrade log present (probably fresh install)
UpstartBugCategory: System
UpstartRunningSystemVersion: init (upstart 1.13.2)
modified.conffile..etc.at.deny: [inaccessible: [Errno 13] Permission denied: '/etc/at.deny']
modified.conffile..etc.init.d.squid3: [modified]
modified.conffile..etc.init.squid3.conf: [modified]
modified.conffile..etc.libvirt.qemu.conf: [inaccessible: [Errno 13] Permission denied: '/etc/libvirt/qemu.conf']
modified.conffile..etc.squid3.squid.conf: [modified]
modified.conffile..etc.sudoers.d.zfs: [inaccessible: [Errno 13] Permission denied: '/etc/sudoers.d/zfs']
mtime.conffile..etc.init.d.squid3: 2015-04-20T19:38:26.086956
mtime.conffile..etc.init.squid3.conf: 2015-04-20T19:41:30.667871
mtime.conffile..etc.squid3.squid.conf: 2015-04-20T19:27:33.523720