Bug#815214: BOINC client log files/Stretch

[TarotApprentice]

On a Raspberry Pi/Stretch there appears to be a number of boinc-client.service files:
$ sudo find / -name "boinc-client.service"
/etc/systemd/system/multi-user.target.wants/boinc-client.service
/sys/fs/cgroup/devices/system.slice/boinc-client.service
/sys/fs/cgroup/systemd/system.slice/boinc-client.service
/lib/systemd/system/boinc-client.service
/var/lib/systemd/deb-systemd-helper-enabled/multi-user.target.wants/boinc-client.service

I have changed the multi-user.target.wants version to read as follows:
[Unit]
Description=Berkeley Open Infrastructure Network Computing Client
After=network.target
[Service]
Nice=10
User=boinc
PermissionsStartOnly=yes
ExecStart=/bin/sh -c '/usr/bin/boinc --dir /var/lib/boinc-client >/var/lib/boinc-client/stdoutdae.txt 2>/var/lib/boinc-client/stderrdae.txt'
ExecReload=/usr/bin/boinccmd --read_cc_config
ExecStopPost=/bin/rm -f /var/lib/boinc-client/lockfile
IOSchedulingClass=idle
[Install]
WantedBy=multi-user.target

That is removed the ExecPre lines and amended the ExecStart so it should log as before. It is now updating /var/lib/boinc-client/stderrdae.txt and stdoutdae.txt however the stderrgpudetect.txt and stdoutgpudetect.txt are still zero bytes.

Also like the other issue with the error logs full of messages I now get
"dir_open: Could not open directory '/dev/input/mice' from '/var/lib/boinc-client'." repeated. Its headless so there is no rodent.