我正在尝试安装IRkernel以在jupyter笔记本中使用R.我在终端点燃了R并键入：
> devtools::install_github('IRkernel/IRkernel')
得到了：
Downloading GitHub repo IRkernel/IRkernel@master
from URL https://api.github.com/repos/IRkernel/IRkernel/zipball/master
Installing IRkernel
trying URL 'https://www.stats.bris.ac.uk/R/src/contrib/digest_0.6.15.tar.gz'
Content type 'application/x-gzip' length 122095 bytes (119 KB)
==================================================
downloaded 119 KB
Installing digest
*** caught segfault ***
address 0x18, cause 'memory not mapped'
Traceback:
1: dyn.load(file, DLLpath = DLLpath, ...)
2: library.dynam(lib, package, package.lib)
3: loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]])
4: namespaceImport(ns, loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]), from = package)
5: loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]])
6: namespaceImport(ns, loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]), from = package)
7: loadNamespace(name)
8: doTryCatch(return(expr), name, parentenv, handler)
9: tryCatchOne(expr, names, parentenv, handlers[[1L]])
10: tryCatchList(expr, classes, parentenv, handlers)
11: tryCatch(loadNamespace(name), error = function(e) stop(e))
12: getNamespace(ns)
13: asNamespace(pkg)
14: get(name, envir = asNamespace(pkg), inherits = FALSE)
15: evaluate:::default_output_handler
...
41: update(pkg, ..., Ncpus = threads, quiet = quiet, upgrade = upgrade)
42: install_deps(pkg, dependencies = initial_deps, upgrade = upgrade_dependencies, threads = threads, force_deps = force_deps, quiet = quiet, ..., out_dir = out_dir, skip_if_log_exists = skip_if_log_exists)
43: install(source, ..., quiet = quiet, metadata = metadata, out_dir = out_dir, skip_if_log_exists = skip_if_log_exists)
44: install_remote(..., quiet = quiet)
45: doTryCatch(return(expr), name, parentenv, handler)
46: tryCatchOne(expr, names, parentenv, handlers[[1L]])
47: tryCatchList(expr, classes, parentenv, handlers)
48: tryCatch(install_remote(..., quiet = quiet), error = function(e) { if (!quiet) { message("Installation failed: ", conditionMessage(e)) } FALSE})
49: FUN(X[[i]], ...)
50: vapply(remotes, try_install_remote, ..., FUN.VALUE = logical(1))
51: install_remotes(remotes, quiet = quiet, ...)
52: devtools::install_github("IRkernel/IRkernel")
Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
Selection:
这个分段错误是什么？ “记忆”是“未映射”是什么意思？