When a job name contains non-ASCII characters (Montréal for example), the URL generated for the redirection process to the last build analysis reports get bad encoding.

For example:

• Job name: Montréal
• Hyperlinks on main job page:
  • Static Analysis Warning: /job/Ville%20de%20Montr%C3%A9al%20Reporter%20iOS%20Application/warnings10

This URL is correctly encoded using UTF-8. So clicking on this link perform the expected result. Unfortunately, by clicking this hyperlink, Jenkins redirect the request to the last build warning result, generating new URL with bad encoding. These are the detailed header of the multiple requests following the redirection:

1. GET /job/Ville%20de%20Montr%C3%A9al%20Reporter%20iOS%20Application/warnings10

   HTTP/1.1 301 Moved Permanently
   Server: nginx
   Date: Fri, 05 Sep 2014 16:28:28 GMT
   Content-Type: text/html
   Content-Length: 178
   Connection: keep-alive
   Location: https://jenkins.foobar.com/job/Ville%20de%20Montr%E9al%20Reporter%20iOS%20Application/43/warnings10Result
   

2. GET /job/Ville%20de%20Montr%E9al%20Reporter%20iOS%20Application/43/warnings10Result

   HTTP/1.1 502 Bad Gateway
   Server: nginx
   Date: Fri, 05 Sep 2014 16:35:25 GMT
   Content-Type: text/html
   Content-Length: 537
   Connection: keep-alive
   ETag: "51fbbaa1-219"
   
   <h1>An error occurred.</h1>
   <p>Sorry, the page you are looking for is currently unavailable.<br/>
   Please try again later.</p>
   

If you check at the URLs, you'll see that in the first request, the é is encoded into %C3%A9 code (which is correct in UTF-8). But the Location: header in the response change this encoding to %E9 (ISO-8859-1), which is incorrect. That's why the redirection fail with this 502 HTTP status message:

An error occurred.
Sorry, the page you are looking for is currently unavailable.
Please try again later.