Intercept, 37 bytes

Prints newlines to the terminal. You'll probably have to leave this one overnight, as there is a delay of 5-15 minutes (it's random!) between each newline.

Input is marked with a `>>`. The command prompt is the empty `>>`.

Assuming a system with only `TZ_INFECT` installed... ```

malware bm bitminer creating bm (bitminer) ... wait a minute ...

finished creating bm (bitminer)

software install 1 Success bm installed

...wait... (newlines)

Note that I'm using a custom client that prefixes `[BROADCAST]` to all `broadcast` events. 
# How???
`TZ_INFECT` is Intercept's malware generator. We can generate a bitminer by running `malware <name> bitminer`. This will create a new piece of software with the given name of type `bitminer`
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We then install the bitminer: `software install <index>`, where `index` is the 0-based index of the software as given by `software list`. This is why I made sure the only piece of software on the system was the malware generator. This places our new bitminer at index `1`.
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There is a bug in the implementation of `bitminer` that results in an empty `broadcast` event to be sent to the client whenever bits are generated. Since bits are generated at random intervals, the broadcasts are sent at random intervals. Voilia, non-deterministic output!<br><br>
Note: the newlines are harder to detect using the official game client, but you can see them by running a command and watching the newlines slowly push the resulting output off the screen.<br><br>

Screenshot coming in a few hours while I wait for the output.