MacBook Pro Retina 15" (Early 2013) randomly shuts down I've been having issues with my MacBook Pro randomly shutting down for about 2 weeks now.

I tried taking it to a local Apple reseller and here's what they told me:


The main cause of my problem was because I was using f.lux
They tested the battery and it apparently said that "the battery
test failed". I'm not even sure what that means.


I tried all the different tools to check my hardware and software, I ran the Apple Hardware Test and the only thing I got is: 


  4HDD/11/40000000 SATA(0,0)


I checked if there were any malware or viruses on the computer but every program I used points to the same conclusion: everything is going fine. I tried SMC and PRAM reset, I even formatted the SSD and reinstalled macOS High Sierra but the problem still occurs.

Here are my console logs, I took the first 25 lines just before the BOOT_TIME: https://pastebin.com/QMjiwx72

I tried the syslog | grep shutdown command in the terminal and here's what I get:

Nov  4 21:39:15 macbook-pro-de-sylvain shutdown[939] &lt;Notice&gt;: SHUTDOWN_TIME: 1509827955 280191
Nov  4 21:39:37 localhost com.apple.xpc.launchd[1] (org.cups.cupsd) &lt;Warning&gt;: Service has increased maximum shutdown time to 60 seconds. This will create a poor experience for the user.
Nov  4 23:55:06 localhost com.apple.xpc.launchd[1] (org.cups.cupsd) &lt;Warning&gt;: Service has increased maximum shutdown time to 60 seconds. This will create a poor experience for the user.


I really don't know what to do anymore... I've been looking for a solution all over the web but I couldn't find any fix.

Does anyone have any idea about what could be going on? :(

Thanks in advance,

Sylvain
I realize it's been a long time since the initial post and unfortunately I don't have a solution, but I'm going through what appears to be the same problem and, as there seems to be scant documentation,  I thought I'd report a couple more details to see if they jog any ideas in anyone and if they line up with your original report. On running syslog | grep shutdown I get the same response: 

localhost com.apple.xpc.launchd[1] (org.cups.cupsd) &lt;Warning&gt;: Service has increased maximum shutdown time to 60 seconds. This will create a poor experience for the user.


On contacting support, Apple is also presuming this to be a battery issue, but they (or anyone else for that matter) can't explain how/why the spontaneous shutdowns would occur when on AC power. 

So, a couple things I've noticed:


Running yes &gt; /dev/null &amp; in terminal prevents the random
shutdowns. I've seen this workaround in a couple places but not
connected to the 'maximum shutdown time' we're both getting
While running gfxCardStatus to lock the graphics card to either
integrated or the discrete nVidia card, I get different shutdowns.


On integrated graphics:
 - I get a black screen, but with the LED
       panel clearly still on and the keyboard backlight stays on (if it
       was on before). The fan runs loudly and the black screen remains for
       about 10 seconds, then the computer shuts down.
 - to my best recollection, this only happens on battery power.

On discrete cards:
 - rather than going black, the screen freezes. The rest is the same
    (fans, shutdown after about 10 seconds)
 - happens on both ac and battery power

Anyways, hopefully that spurs some idea in someone. Seems like everywhere I look or anyone I talk to has different advice on cause and solution, but your original question is the only one I've seen that's exactly the same as what I'm going through (with the minor exception that my laptop is a late 2013 15" model).