title: "error: specified package has no binaries" when trying to install packages with cargo?
body: <p>I've made a new project with </p>
  
  <pre><code>cargo new project-name
  cd ./project-name
  </code></pre>
  
  <p>And once in the directory running</p>
  
  <pre><code>cargo install crate-name
  </code></pre>
  
  <p>for any crate listed on crates.io yields the error</p>
  
  <pre><code>Updating crates.io index
  Installing crate-name version-number                                                    
  error: specified package has no binaries
  </code></pre>
  
  <p>Looking elsewhere suggests adding the proper dependencies to my Cargo.toml file, but this does not change the output I'm getting. In particular I'm trying to install rust-gmp as a project dependency, and having</p>
  
  <pre><code>[dependencies]
  rust-gmp = "0.5.0"
  </code></pre>
  
  <p>in Cargo.toml does not allow me to install rust-gmp. Any suggestions?</p>