I was getting build errors because reqwest was eventually pulling in openssl-0.9.24, which was failing to build on my machine. Updating the dependency fixes this for me. This change also cleans up some compiler warnings. I meant to have this as a separate PR, but I accidentally pushed it to this one.
This issue appears to be discussing a feature request or bug report related to the repository. Based on the content, it seems to be resolved. The issue was opened by eholk and has received 4 comments.