我使用 R 3.4.4 和 Ubuntu 16.04 并遵循 gert 安装说明 here。我已经安装了 libgit2-dev，但 gert 安装崩溃并出现以下错误：

** testing if installed package can be loaded

 *** caught illegal operation ***
address 0x7fbf6f06b405,cause 'illegal operand'

Traceback:
 1: .Call(R_git_config_list,NULL)
 2: git_config_global()
 3: doTryCatch(return(expr),name,parentenv,handler)
 4: tryCatchOne(expr,names,handlers[[1L]])
 5: tryCatchList(expr,classes,handlers)
 6: tryCatch(expr,error = function(e) {    call <- conditionCall(e)    if (!is.null(call)) {        if (identical(call[[1L]],quote(doTryCatch)))             call <- sys.call(-4L)        dcall <- deparse(call)[1L]        prefix <- paste("Error in",dcall,": ")        LONG <- 75L        msg <- conditionmessage(e)        sm <- strsplit(msg,"\n")[[1L]]        w <- 14L + nchar(dcall,type = "w") + nchar(sm[1L],type = "w")        if (is.na(w))             w <- 14L + nchar(dcall,type = "b") + nchar(sm[1L],type = "b")        if (w > LONG)             prefix <- paste0(prefix,"\n  ")    }    else prefix <- "Error : "    msg <- paste0(prefix,conditionmessage(e),"\n")    .Internal(seterrmessage(msg[1L]))    if (!silent && identical(getOption("show.error.messages"),TRUE)) {        cat(msg,file = outFile)        .Internal(printDeferredWarnings())    }    invisible(structure(msg,class = "try-error",condition = e))})
 7: try({    settings <- git_config_global()    name <- subset(settings,name == "user.name")$value    email <- subset(settings,name == "user.email")$value    if (length(name) || length(email)) {        packageStartupInform("Default user: %s <%s>",as_string(name),as_string(email))    }    else {        packageStartupInform("No default user configured")    }})
 8: fun(libname,pkgname)
 9: doTryCatch(return(expr),handler)
10: tryCatchOne(expr,handlers[[1L]])
11: tryCatchList(expr,handlers)
12: tryCatch(fun(libname,pkgname),error = identity)
13: runHook(".onAttach",ns,dirname(nspath),nsname)
14: attachNamespace(ns,pos = pos,deps)
15: doTryCatch(return(expr),handler)
16: tryCatchOne(expr,handlers[[1L]])
17: tryCatchList(expr,handlers)
18: tryCatch({    attr(package,"LibPath") <- which.lib.loc    ns <- loadNamespace(package,lib.loc)    env <- attachNamespace(ns,deps)},error = function(e) {    P <- if (!is.null(cc <- conditionCall(e)))         paste(" in",deparse(cc)[1L])    else ""    msg <- gettextf("package or namespace load failed for %s%s:\n %s",sQuote(package),P,conditionmessage(e))    if (logical.return)         message(paste("Error:",msg),domain = NA)    else stop(msg,call. = FALSE,domain = NA)})
19: library(pkg_name,lib.loc = lib,character.only = TRUE,logical.return = TRUE)
20: withCallingHandlers(expr,packageStartupMessage = function(c) invokeRestart("muffleMessage"))
21: suppresspackageStartupMessages(library(pkg_name,logical.return = TRUE))
22: doTryCatch(return(expr),handler)
23: tryCatchOne(expr,handlers[[1L]])
24: tryCatchList(expr,handlers)
25: tryCatch(expr,condition = e))})
26: try(suppresspackageStartupMessages(library(pkg_name,logical.return = TRUE)))
27: tools:::.test_load_package("gert","/home/viktoriya/R/x86_64-pc-linux-gnu-library/3.4")
An irrecoverable exception occurred. R is aborting now ...
Illegal instruction (core dumped)
ERROR: loading failed

请帮忙。