build: plan9-amd64-9front builder is unhappy

[bradfitz]

@0intro, let's fix the plan9-amd64-9front builder or kill it.

Its column of red is distracting.

[bradfitz]

David, any update here?

[bradfitz]

David, please stop this builder. It is still red.

Unless there is a plan to work on it and make it not red. But I don't believe there is such a plan, so it's not doing any good keeping it.

[0intro]

The plan9-amd64-9front builder is currently failing because one of the runtime/trace test is running out of memory (see build log).

I've haven't fixed it yet because I spent my time on other issues, but I see no reason why this issue couldn't be fixed as well.

So, my plan would be investigate and fix this issue.

I'd prefer to keep the plan9-amd64-9front builder for now. I'm ready to convert it to the buildlet if you provide me the key.

Thanks.

[bradfitz]

Okay, I sent you a host key.

[bradfitz]

9front builder is now failing with:

##### Building Go bootstrap tool.
cmd/dist
ERROR: Cannot find /tmp/workdir-host-plan9-amd64-0intro/go1.4/bin/go.
Set $GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4.

If you update your buildlet to get golang/build@a7e875c then you can set your own GOROOT_BOOTSTRAP without me having to configure it.