http://docs.rs/releases/search (without a search query) gives a 500 internal error

[sentry-io]

Sentry Issue: DOCS-RS-BACKEND-C

Error: Tried to concat a value that is not a string or a number from ident search_query
Error: Failed to render 'releases/releases.html'
Error: called `ctry!()` on an `Err` value while attempting to fetch the route Url { generic_url: "http://docs.rs/releases/search" }
  ?, in docs_rs::web::page::web_page::WebPage::into_response
  ?, in docs_rs::web::error::Nope::handle
  ?, in iron::middleware::Chain::continue_from_before
  ?, in iron::middleware::Chain::handle
  ?, in docs_rs::web::MainHandler::handle
...
(11 additional frame(s) were not displayed)

[jyn514]

(This will be fixed by #1224.)

[syphar]

update: will be fixed with #1521