Github install_github not working

Describes the cause and action for error messages.

Error Message(English)：
install_github not working

Resolution

install_github not working ・ Issue #113 ・ rocker-org/rocker ・ GitHub
https://github.com/rocker-org/rocker/issues/113

Crash on install_github remains ・ Issue #532 ・ r-lib/devtools ・ GitHub
https://github.com/r-lib/devtools/issues/532

Error in download(dest, src, auth) : client error: (403) Forbidden - GitHub
https://github.com/ramnathv/rMaps/issues/82