Build failures in Nightly due to Proc macro API 1.2 changes

[tirkarthi]

Bug report :

Project fails with Nightly compiler due to the recent proc macro API changes made that renames some of the components. It seems the release of proc macros 2 library with the changes already merged will fix the issue. I searched for issues here and couldn't find anything related to this. Hence I am opening this as a reminder to upgrade dependency. Feel free to close this if it's tracked elsewhere or irrelevant.

Upstream rustc issue reference : rust-lang/rust#50473 (comment)
Upstream proc macros 2 PR (merged) : dtolnay/proc-macro2#90
Build failure : https://travis-ci.org/SergioBenitez/Rocket/jobs/381529609

Thanks for the library.

[tirkarthi]

0.4.3 released with the changes. Ref : https://github.com/alexcrichton/proc-macro2/tree/0.4.3

[jebrosen]

quote 0.6 and syn 0.14 were just released 9 hours ago, so this should be possible to fix now. @SergioBenitez have you started work on this migration or would a PR be helpful?

[SergioBenitez]

@jebrosen I would love a PR here. The changes necessary should be minimal.

[SergioBenitez]

Fixed in 00dd691.

[tsathishkumar]

Will there be a new version of Rocket with build fixes?

[jebrosen]

@tsathishkumar: This issue was only in the master branch of Rocket, which has now been fixed.

[tsathishkumar]

@jebrosen I'm using rocket version 0.3.11 in my code and the build is failing. So I was wondering if there will be a new version coming out soon. Thanks for the response.

[jebrosen]

@tsathishkumar if a cargo update does not resolve the build failures, please file a new issue with more details.

[tsathishkumar]

The issue still persists, because 0.3.11 was built before your fix. I'm going to temporarily point to git branch and build my project and wait for the next release.