I am testing a package with win-builder (R-release), and the package checks fail without returning a real error message. These same checks work fine locally on Windows and Linux for R 3.3.2 and 3.2.0. I have no compiled code, just uncompiled R code, and I do not redirect output anywhere.
** running tests for arch 'i386' ... ERROR
Running the tests in 'tests/testthat.R' failed.
Last 13 lines of output:
R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.
Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.
> library(testthat)
> library(mypackage)
>
> test_check("mypackage")
** running tests for arch 'x64' ... [109s] OK
Running 'testthat.R' [108s]
I checked the bottom of testthat.Rout.fail, and it really does end with test_check("mypackage").
Never mind. The R session was crashing. Reproduced, debugged, and fixed locally on i386.