# Help with Optim tests on nightlies

**URL:** <https://discourse.julialang.org/t/help-with-optim-tests-on-nightlies/1783>\
**Category:** General Usage\
**Created:** [January 30, 2017, 12:37pm UTC](https://discourse.julialang.org/t/help-with-optim-tests-on-nightlies/1783 "2017-01-30T12:37:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![pkofod](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pkofod/32/2179_2.png) [@pkofod](https://discourse.julialang.org/u/pkofod)\
**Post date:** [January 30, 2017, 12:37pm UTC](https://discourse.julialang.org/t/help-with-optim-tests-on-nightlies/1783/1 "2017-01-30T12:37:59Z")

</div>

I have a problem with Optim, and I’m not exactly sure how to debug it. On master I get the following log ( [https://s3.amazonaws.com/archive.travis-ci.org/jobs/196382616/log.txt](https://s3.amazonaws.com/archive.travis-ci.org/jobs/196382616/log.txt) , warning it’s a 3mb stack trace) when trying to test the PR that can be found here [https://github.com/JuliaOpt/Optim.jl/pull/355](https://github.com/JuliaOpt/Optim.jl/pull/355) . Notice, that Optim master will give a similar error message, so it’s not really that PR specifically, it’s just easier to share the link for the log that way.

Basically, I have no idea what that output tells me. We might be doing something that is illegal under the new type-algorithm, but I have no idea where to start.

Thanks!