error: Could not compile `clap`.

[luckypoem]

hi.
运行cargo build --release --features "$SS_FEATURES"后，显示：
...
Compiling aho-corasick v0.5.3
Compiling clap v2.18.0
error: Could not compile clap.

To learn more, run the command again with --verbose.
root@RegalMusty-VM:~/shadowsocks-rust-by-loggerhead#

如何解决错误？

[loggerhead]

编译用的 rust 版本是多少？我用 1.23.0 stable 编译没问题。