I ran into two issues, one in rustc-serialize broken by https://github.com/rust-lang/rust/issues/35203 https://github.com/rust-lang/rust/issues/35203 (fixable b

I ran into two issues, one in rustc-serialize broken by https://github.com/rust-lang/rust/issues/35203 https://github.com/rust-lang/rust/issues/35203 (fixable by cargo update -p rustc-serialize) and one in url broken by the move to NLL on the 2015 edition. The second is an important bugfix in the language, but it still broke my build :). Not sure how I fixed it but it's now fixed as well. Additional changes were required due to openssl. My own code has compiled just fine except for a ton of warnings (most about try! -> ? change) and the needed API updates of dependencies (2 changed lines). Most of the effort I spent on actually updating as little as possible. If you update everything you fix all issues resolvable by updates but you also have to adjust to every API change :).