Why does this script BSOD-ize windows ?

[Baz via Digitalmars-d-learn]

On Tuesday, 21 July 2015 at 10:41:54 UTC, Kagamin wrote:
> try this:
>
> import std.process, std.stdio;
> import core.thread;
> import std.random;
>
> void main(string[] args)
> {
>     string on = "netsh interface set interface \"Connexion au 
> réseau local\" Enable";
>     string off = "netsh interface set interface \"Connexion au 
> réseau local\" Disable";
>
>     while(true)
>     {
>         executeShell(on);
>         const t=uniform(2000, 5000);
>         writeln("timeout: ",t);
>         readln();
>         Thread.sleep(dur!("msecs")(t));
>         executeShell(off);
>         Thread.sleep(dur!("msecs")(2000));
>     }
> }

Mmmmh i see, you think that t will be on TLS like this ?
But i'll test later, actually the crash happens after a few 
iterations, eg i run the script, i check it works, i go away, 
then when i come back and windows restarted and i got 
"unexepected .... blue screen" message.