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Re: lang/rust build fails

Thanks!  I’ll give your suggestions a try.


On May 15, 2020, at 7:27 AM, Martin Husemann <> wrote:

> On Fri, May 15, 2020 at 06:27:41AM -0500, Robert Nestor wrote:
>> Yes, and it appears to be different from what Chavdar has on his slightly earlier system.
>> seed                      0 ???  estimate, collect, v
> Bingo!
> You do not have a hardware random number generator, and your setup did not
> provide initial entropy.
> There is an ongoing thread on some other list where this currently is
> discussed with lots of technical details and irritation, but the short
> story is:
> - Easiest fix for now is to provide a properly seeded /var/db/entropy-file
>   (shutdown to single user, manually copy file over, reboot).
>   You can create such a file on another machine (with working random
>   number generator) via "rndctl -S $file".
>   After that reboot, all should be fine and the next rust build will
>   not block.
> - If this is a virtual machine, add viornd(4) to your kernel (and hope the
>   hypervisor supports it)
> There are variants of the first solution, like generating random bytes
> by some other means and write them to /dev/random.
> Martin

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