[Buildbot-devel] Recovering from having wrong git installed on cygwin

[Dan Kegel]

Oh, dear.  It happened again.  And this time there's no native git interfering.
The log says it's git version 1.7.0.4, and it gets stuck waiting for
the first git call to finish.

Grumble.


On Tue, Nov 13, 2012 at 4:51 PM, Dan Kegel <dank at kegel.com> wrote:
> The FAQ notes that there are problems on cygwin if you have the wrong
> git installed.
>
> For small projects, if you accidentally have 'native' git installed,
> running buildslaves on cygwin seems fine.
>
> For larger ones... mine failied to check out a source tree with git.
> On the master log, I saw things like
>
> 2012-11-13 16:48:16-0800 [-] Starting git command : git clone --branch
> iz git.oblong.com:~cp/pub/yovo.git .
> 2012-11-13 16:48:16-0800 [-] <RemoteShellCommand '['git', 'clone',
> '--branch', u'iz', 'git.oblong.com:~cp/pub/yovo.git', '.']'>:
> RemoteCommand.run [3]
> 2012-11-13 16:48:16-0800 [-] command '['git', 'clone', '--branch',
> u'iz', 'git.oblong.com:~cp/pub/yovo.git', '.']' in dir 'source'
>
> and then it just hung for a long time.
>
> Worse, when I press 'cancel build', the build... keeps hanging.  It
> doesn't go away.
> The status page for the build gets another 'interrupt' entry; they
> pile up, so it looks like this:
>
> git updating ( running )
> stdio
> interrupt
> interrupt
> interrupt
> interrupt
> interrupt
>
> Recovering from this mess was hard.  First I had to figure out that
> the wrong git was being
> invoked -- oddly, cygwin's PATH didn't have /bin first.
>
> I had to uninstall the wrong git, then blow away both master and slave totally.
>
> Yup, having the wrong git on the slave somehow corrupted the state on
> the master.
>
> Or maybe I was just having a bad day.
>
> Anyway, posting this in case it helps someone else later.