出错信息：
==> Creating package "anaconda"...
-> Generating .PKGINFO file...
-> Generating .BUILDINFO file...
-> Adding install file...
-> Generating .MTREE file...
-> Compressing package...
xz: (stdout): Write error: No space left on device
bsdtar: Write error
==> ERROR: Failed to create package file.
==> ERROR: Makepkg was unable to build anaconda.
解决方法：https://forum.manjaro.org/t/xz-stdout-write-error-no-space-left-on-device/16476/5
原因是/tmp目录的容量不够了，实际上，我的/tmp目录大小为4.1G,还剩下130M。
下一步是尝试重启，看tmp目录文件是否自动删除。