[R-pkg-devel] package upload failing with note about 'calibre' files in temp dirs

[Skye Bender-deMoll]

Dear CRAN devs

I've recently run into some testing issues when attempting to release 
fixes for the ndtv package on CRAN.

1) I have examples in documentation that test the ability of the package 
to export files, but the creation of these files then results in a NOTE 
from testing.

For example:
 > export.dot(net,file="testNet.dot")


Flavor: r-devel-linux-x86_64-debian-gcc
Check: for non-standard things in the check directory, Result: NOTE
   Found the following files/directories:
     'testNet.dot' 'toy_epi_sim.net'

Is there a recommended path/location that I can dependably write to that 
won't cause testing issues?


2) I'm getting a NOTE about tmp files that don't seem to be generated by 
my package:

Flavor: r-devel-linux-x86_64-debian-gcc
Check: for detritus in the temp directory, Result: NOTE
   Found the following files/directories:
     'calibre_5.12.0_tmp_0xdbyqv2' 'calibre_5.12.0_tmp_1jl8jqpk'
     'calibre_5.12.0_tmp_5y0ez9_o' 'calibre_5.12.0_tmp_74yrardi'
     'calibre_5.12.0_tmp_94i7al75' 'calibre_5.12.0_tmp_ddddnxrg'
     'calibre_5.12.0_tmp_kspp394a' 'calibre_5.12.0_tmp_llj3v9l1'
     'calibre_5.12.0_tmp_n41oxz8a' 'calibre_5.12.0_tmp_nqsnylff'
     'calibre_5.12.0_tmp_o8q1up25' 'calibre_5.12.0_tmp_ou7_bpv1'
     'calibre_5.12.0_tmp_vcw1hd1w' 'calibre_5.12.0_tmp_xh0gp8d4'

I don't have any source code in my package that includes these file 
names, and searching on the web, it seems like it must be a reference to 
the a debian package for a "powerful and easy to use e-book manager" 
https://packages.debian.org/testing/calibre ?  This seems very unrelated 
to the functionality of the ndtv package, any ideas where these files 
are comming from?

Thanks for your help!
best,
  -skye