[R-pkg-devel] help troubleshooting travis-ci issues?

[Ben Bolker]

  I'm having some trouble with travis builds of a package (local checks
work fine) and hoping if I can get suggestions for diagnosis &
troubleshooting ...

The package is 'broom.mixed'; I hadn't changed it in a while, but
recently got a minor pull request which seemed reasonable. I believe the
problems I'm having now are dependency and/or caching problems, not
actually related to the changes in the package.

The failing build is here

https://travis-ci.org/bbolker/broom.mixed/builds/567597217

The initial tests of the PR failed, I think because rstan took too long
to compile.  So I added some code to install rstan binaries from a PPA
instead of compiling it on the spot:

https://github.com/bbolker/broom.mixed/blob/master/.travis.yml#L32-L34

(thanks to various resources Dirk Eddelbuettel has written).  I got more
errors (described below) that I thought were caused by package caching,
but clearing the Travis cache
<https://docs.travis-ci.com/user/caching/#clearing-caches> doesn't seem
to have helped; now I'm afraid that they're due to a mismatch between
the R configuration in Michael Rutter's cd24u repo and the configuration
on Travis ... ?

  Any suggestions for what to look at?

  My travis skills are definitely cargo-culty, so please be gentle if
you look at my .travis.yml file (feel free to suggest/explain improvements!)

   Ben Bolker

---

---
[installing ggstance, ggridges, lmerTest]
Error: package "scales" was installed by an R version with different
internals; it needs to be reinstalled for use with this R version
Execution halted

[installing htmlwidgets]
Failed with error: "there is no package called "shiny"

[running examples]
Error: package "fansi" was installed by an R version with different
internals; it needs to be reinstalled for use with this R version
Execution halted