Differentiating license issues with connection issues

从 RemoteMatlabProxyFactory.java:176 开始，跟踪代理创建超时如何通过 matconsolectl 源代码体现出来。如果可能，重现许可证耗尽的情况，将其与网络故障进行比较，并确定 MATLAB 许可证管理器的消息是否可用；当两种故障类型可以区分，或该限制已记录在文档中时，即视为完成。

We're running matconsolectl in a server job and using a corporate license pool.
Sporadically, we're getting this exception:

Exception in thread "main" matlabcontrol.MatlabConnectionException: MATLAB proxy could not be created in 180000 milliseconds
at matlabcontrol.RemoteMatlabProxyFactory.getProxy(RemoteMatlabProxyFactory.java:176)

I suspect that this is caused by being out of matlab licenses, but as far as I can tell from the matconsolectl source code, it does not have any special handling of license issues compared to e.g. network issues. Or am I misdiagnosing this and license errors will not get MatlabConnectionException timeouts?

It would be really nice if one could get the error message we get when running matlab directly, i.e.

"License checkout failed.
License Manager Error -4
Maximum number of users for MATLAB reached.
Try again later."

I'm not sure where to start looking for the above output though, so not sure how to fix it (if this really is the issue that I think it is)