每次我尝试从 RStudio 运行 install_github() 时，我都会得到这样的结果：
devtools::install_github("r-lib/devtools")
Downloading GitHub repo r-lib/devtools@master
Error in utils::download.file(url, path, method = download_method(), quiet = quiet, :
cannot open URL 'https://api.github.com/repos/r-lib/devtools/tarball/master'*
我尝试了https://github.com/r-lib/devtools/issues/1772 中描述的工作
这就是我得到的：
Downloading GitHub repo r-lib/devtools@master
Error in utils::download.file(url, path, method = download_method(), quiet = quiet, :
cannot open URL 'https://api.github.com/repos/r-lib/devtools/tarball/master'*
Error in bindingIsLocked(x, ns) : no binding for "version_info"
assignInNamespace("version_info", c(devtools::version_info, list("3.5" = list(version_min = "3.3.0", version_max = "99.99.99", path = "bin"))), "devtools")
Error in find_rtools() : could not find function …