"no method named `map_or` found" 用 cargo 安装 deno 时

Question

我运行 Ubuntu 18.04。我已经使用 rustup.rs 中的说明在 /home/username/.cargo 目录中安装了 rust。尝试安装 deno 时：

cargo insall deno

在过程即将结束时，构建失败并出现错误：

   Compiling deno_core v0.47.0
error[E0599]: no method named `map_or` found for type `std::result::Result<&url::Url, &rusty_v8::data::TryFromTypeError>` in the current scope
   --> /home/kaan.atakan/.cargo/registry/src/github.com-1ecc6299db9ec823/deno_core-0.47.0/bindings.rs:569:41
    |
569 |     v8::String::new(scope, url.as_ref().map_or("<unknown>", Url::as_str))
    |                                         ^^^^^^ help: there is a method with a similar name: `map_err`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0599`.
error: could not compile `deno_core`.
warning: build failed, waiting for other jobs to finish...
error: failed to compile `deno v1.0.4`, intermediate artifacts can be found at `/tmp/cargo-installuTtprd`

Caused by:
  build failed

Answer 1

呸！原来我的 Rust 安装已经过时了。我通过在终端中输入 rustup update 来更新它，更新完成后我再次运行 cargo install deno 并且一切正常！

"no method named `map_or` found" 用 cargo 安装 deno 时

"no method named `map_or` found" when installing deno with cargo

installation

build

deno