package build crashes on installing covr from github

[markvanderloo]

@craigcitro, @hadley, @jimhester

I keep getting build error because installing Jim's covr package fails. It appears that the github api refuses to serv travis-ci requests.

In .travis.yml:

r_github_packages:
  - jimhester/covr

Here's the error I get:

The command "Rscript -e 'devtools::install_github(c("jimhester/covr"), build_vignettes = FALSE)'" failed and exited with 1 during 

I added curl -i to the .travis.yml to see what's going on, and I get

$ curl -i https://api.github.com/repos/jimhester/covr/zipball/master
HTTP/1.1 403 Forbidden
Server: GitHub.com
Date: Mon, 29 Feb 2016 12:56:17 GMT

[snip]

{
  "message": "API rate limit exceeded for 52.0.240.122. (But here's the good news: Authenticated requests get a higher rate limit. Check out the documentation for more details.)",
  "documentation_url": "https://developer.github.com/v3/#rate-limiting"
}

I'm out of wits except setting up somehow oAuth from travis, which I'd rather avoid.

As an aside, I used to do this with a derivative of a script of Dirk E., based on the language c directive and strangely enough that never showed this problem.

Some links: travis-ci log | github repo | travis config

[jimhester]

Yes this is a known transient issue because GitHub's rate limiting is per IP address, so Travis can exceed them. You can wait a few minutes and re-run your build.

To avoid this in the future you can also setup a secure environment variable called GITHUB_PAT at https://travis-ci.org/data-cleaning/lintools/settings with a GitHub personal access token generated without any permissions.

[markvanderloo]

Thanks Jim, that clears things up!