I am learning Rust, and saw a post on http://reddit.com/r/rust yesterday for Nickel. As a Node.js developer in my free time, I was interested in checking this out.
I downloaded the Rust 1.0.0-beta DMG from http://rust-lang.org.
I followed the Hello World tutorial precisely, and when I execute cargo run in my Terminal, I am receiving the following error:
Robs-MacBook-Pro:nickel-demo rob$ cargo run
Compiling nickel-demo v0.0.1 (file:///Users/rob/Workbench/nickel-demo)
src/main.rs:4:1: 4:21 error: an external crate named `nickel` has already been imported into this module [E0259]
src/main.rs:4 extern crate nickel;
^~~~~~~~~~~~~~~~~~~~
error: aborting due to previous error
Could not compile `nickel-demo`.
The Hello World main.rs file for the Nickel Demo looks like this:
extern crate nickel;
#[macro_use] extern crate nickel_macros;
extern crate nickel;
use nickel::Nickel;
fn main() {
let mut server = Nickel::new();
server.utilize(router! {
get "**" => |_req, _res| {
"Hello world!"
}
});
server.listen("127.0.0.1:6767");
}
As I was typing this code into my editor, I specifically thought it was weird that I was declaring extern crate nickel; twice in the file. After receiving the error I refactored the code to this:
extern crate nickel;
#[macro_use] extern crate nickel_macros;
use nickel::Nickel;
...
And I get this error:
Robs-MacBook-Pro:nickel-demo rob$ cargo run
Compiling nickel-demo v0.0.1 (file:///Users/rob/Workbench/nickel-demo)
Running `target/debug/nickel-demo`
Listening on http://127.0.0.1:6767
Ctrl-C to shutdown server
thread '<main>' panicked at 'arithmetic operation overflowed', /Users/rob/.cargo/registry/src/github.com-1ecc6299db9ec823/hyper-0.3.11/src/server/mod.rs:90
An unknown error occurred
