# Regression report stable-2015-12-10 vs. nightly-2016-01-05

**URL:** <https://internals.rust-lang.org/t/regression-report-stable-2015-12-10-vs-nightly-2016-01-05/3063>\
**Category:** Uncategorized\
**Created:** [January 7, 2016, 5:28pm UTC](https://internals.rust-lang.org/t/regression-report-stable-2015-12-10-vs-nightly-2016-01-05/3063 "2016-01-07T17:28:47Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![brson](https://sea2.discourse-cdn.com/flex002/user_avatar/internals.rust-lang.org/brson/32/5197_2.png) [@brson](https://internals.rust-lang.org/u/brson)\
**Post date:** [January 7, 2016, 5:28pm UTC](https://internals.rust-lang.org/t/regression-report-stable-2015-12-10-vs-nightly-2016-01-05/3063/1 "2016-01-07T17:28:47Z")

</div>

## Root regressions, sorted by rank:

- [rand-0.3.12](https://crates.io/crates/rand) ([before](https://tools.taskcluster.net/task-inspector/#unTx5sE2RkW7BWLKefrDrQ)) ([after](https://tools.taskcluster.net/task-inspector/#08HsnWenStWSgatJGAEExg))
- [bchannel-0.0.9](https://crates.io/crates/bchannel) ([before](https://tools.taskcluster.net/task-inspector/#ZRxI5E-YRHWf9xs6KwaFZQ)) ([after](https://tools.taskcluster.net/task-inspector/#QUJUrC5vThmqiWfR5euMuQ))
- [columnar-0.0.17](https://crates.io/crates/columnar) ([before](https://tools.taskcluster.net/task-inspector/#EnpEm-1-R0aVxEyJarzTlA)) ([after](https://tools.taskcluster.net/task-inspector/#Nm9-EOW8RpSYKqNiYRBC_A))
- [dbus-serialize-0.1.1](https://crates.io/crates/dbus-serialize) ([before](https://tools.taskcluster.net/task-inspector/#VGxSLCm6Roi0SzXlNhiJ-A)) ([after](https://tools.taskcluster.net/task-inspector/#GYZzDo5OSxacptHqxRMJug))
- [syncbox-0.2.4](https://crates.io/crates/syncbox) ([before](https://tools.taskcluster.net/task-inspector/#TdLCSMvgQK24loM9kRtsaA)) ([after](https://tools.taskcluster.net/task-inspector/#yyNlgdrZQaW94znOfkI1yg))
- [diesel-0.3.0](https://crates.io/crates/diesel) ([before](https://tools.taskcluster.net/task-inspector/#EJnBDhW7QS6kbhaLLX9FhA)) ([after](https://tools.taskcluster.net/task-inspector/#uCPf3Hg4TS6qEHfn0m88Pw))
- [cbox-0.2.2](https://crates.io/crates/cbox) ([before](https://tools.taskcluster.net/task-inspector/#40z_9DCNQDOS0cIuf_WrNQ)) ([after](https://tools.taskcluster.net/task-inspector/#aCM_IbZTTsKguI4cz3Nixg))
- [genetic-0.2.1](https://crates.io/crates/genetic) ([before](https://tools.taskcluster.net/task-inspector/#Pyq2-ysMRDueE9hUI7Yhww)) ([after](https://tools.taskcluster.net/task-inspector/#mc0vB3i5TT-HAs2d6hf_iQ))
- [git-hive-protocol-0.2.3](https://crates.io/crates/git-hive-protocol) ([before](https://tools.taskcluster.net/task-inspector/#w5fRYRq-QCqjDu1pMiWtog)) ([after](https://tools.taskcluster.net/task-inspector/#KvsT5PJLTzqrfdcvI-ueJQ))
- [grabbag-0.1.0](https://crates.io/crates/grabbag) ([before](https://tools.taskcluster.net/task-inspector/#mAt8BydvQT6Id-0FQsjYqg)) ([after](https://tools.taskcluster.net/task-inspector/#Qd047VhDRLq4BQiPCLMe8A))
- [actors-0.1.0](https://crates.io/crates/actors) ([before](https://tools.taskcluster.net/task-inspector/#EsMXQIrOSPidOkouUk6Hzg)) ([after](https://tools.taskcluster.net/task-inspector/#ei1MOoTaQpG5vo4JfS_tJw))
- [atpp-1.6.6](https://crates.io/crates/atpp) ([before](https://tools.taskcluster.net/task-inspector/#n3oAGhpiSvCmjmbqZDAueg)) ([after](https://tools.taskcluster.net/task-inspector/#YT_8t_HdTZWPWE8KpUAY4A))
- [ldap-0.0.4](https://crates.io/crates/ldap) ([before](https://tools.taskcluster.net/task-inspector/#uX0in9cIRRCfl8W4ZRYTqA)) ([after](https://tools.taskcluster.net/task-inspector/#H2i8IIFVRDKkRmQE1fWe1g))
- [containerof-0.2.1](https://crates.io/crates/containerof) ([before](https://tools.taskcluster.net/task-inspector/#8_qBSuP4RbmUc7sCiHl78Q)) ([after](https://tools.taskcluster.net/task-inspector/#65EZR1Y9Qd-3c_g69KYqrg))
- [cortex-0.1.5](https://crates.io/crates/cortex) ([before](https://tools.taskcluster.net/task-inspector/#CewwwY3PTUat5UhdAc1pMw)) ([after](https://tools.taskcluster.net/task-inspector/#UqaM45BNTxS7rlAX5FY1Tw))
- [decode-0.0.2](https://crates.io/crates/decode) ([before](https://tools.taskcluster.net/task-inspector/#RxMr9CaqRq2uv8BFVpIIBg)) ([after](https://tools.taskcluster.net/task-inspector/#AcFkZDqKSI2MQq3Mq-OQ0A))
- [pistoncore-event-0.4.0](https://crates.io/crates/pistoncore-event) ([before](https://tools.taskcluster.net/task-inspector/#yfZMtGqeRluqogaMBk6aIA)) ([after](https://tools.taskcluster.net/task-inspector/#ypxKIvEPSOCAl7KpUEuQ8g))
- [devboat-docker-0.1.0](https://crates.io/crates/devboat-docker) ([before](https://tools.taskcluster.net/task-inspector/#XjJC82QQSGuV-7Ng1zFhJA)) ([after](https://tools.taskcluster.net/task-inspector/#qFUxsSaORCmr_2qCXC6sIQ))
- [pool-0.1.3](https://crates.io/crates/pool) ([before](https://tools.taskcluster.net/task-inspector/#zdHJd27pSAi4LYb6o5cFaw)) ([after](https://tools.taskcluster.net/task-inspector/#L2BeR1JORLSFsB5U0Pk1xw))
- [prettytable-rs-0.5.1](https://crates.io/crates/prettytable-rs) ([before](https://tools.taskcluster.net/task-inspector/#-eaBbNZzRTWmnRwJkNGEhA)) ([after](https://tools.taskcluster.net/task-inspector/#MetHc1nxRM--_cEBsPmGGA))
- [reactive-streams-0.0.1](https://crates.io/crates/reactive-streams) ([before](https://tools.taskcluster.net/task-inspector/#IqLte61nSh-j_4nelpo8_Q)) ([after](https://tools.taskcluster.net/task-inspector/#U5PYa7ptStyPWTYzhX9OSg))
- [blake2-rfc-0.2.12](https://crates.io/crates/blake2-rfc) ([before](https://tools.taskcluster.net/task-inspector/#Tc5BPmxYQiS5Wt1PJNucrA)) ([after](https://tools.taskcluster.net/task-inspector/#T4nvOuZ9RaqoCEohOc1vpg))
- [rust-sqlite-0.2.0](https://crates.io/crates/rust-sqlite) ([before](https://tools.taskcluster.net/task-inspector/#3iiHibc2S-isLN12uKRRWQ)) ([after](https://tools.taskcluster.net/task-inspector/#yy9bwlp9RsOolLaw8EaA-g))
- [RustyEmitter-2.1.0](https://crates.io/crates/RustyEmitter) ([before](https://tools.taskcluster.net/task-inspector/#i8T7oBmvTnCVQuMEmC57gA)) ([after](https://tools.taskcluster.net/task-inspector/#ondKVILBSzy-lu2C2l7bRQ))
- [stomp-0.11.0](https://crates.io/crates/stomp) ([before](https://tools.taskcluster.net/task-inspector/#pDte6y0HSGOBvRjl0xlg3w)) ([after](https://tools.taskcluster.net/task-inspector/#gr0v2suLQOi2kviaoXqQmg))
- [bud-0.0.1](https://crates.io/crates/bud) ([before](https://tools.taskcluster.net/task-inspector/#GzWplKTPQfunEYcsHHFT0A)) ([after](https://tools.taskcluster.net/task-inspector/#uf4A8gHxS5G5KbhzRi_E7Q))
- [twiddle-0.1.0](https://crates.io/crates/twiddle) ([before](https://tools.taskcluster.net/task-inspector/#Mn6KS3yoTGe-3IO6q5ZLaw)) ([after](https://tools.taskcluster.net/task-inspector/#-BUIQtrGSceoKZl741w4kQ))
- [units-0.1.0](https://crates.io/crates/units) ([before](https://tools.taskcluster.net/task-inspector/#F4E0bsUrSAum1FkdYbr4lA)) ([after](https://tools.taskcluster.net/task-inspector/#tjNMkwelTQKR41La0XIcHA))
- [fmt-extra-0.0.2](https://crates.io/crates/fmt-extra) ([before](https://tools.taskcluster.net/task-inspector/#-r0jPxohTAeDJUjSvjM-bw)) ([after](https://tools.taskcluster.net/task-inspector/#PjhxIMXTRqClcGaoADCFyQ))
- [xdr-0.1.0](https://crates.io/crates/xdr) ([before](https://tools.taskcluster.net/task-inspector/#2ABnpRcrQPevNf5uELtKzA)) ([after](https://tools.taskcluster.net/task-inspector/#m_9csQhEQtqOvhu9z6sagQ))

[Full report](https://gist.github.com/brson/7572b12f8bbdc8e90e4b/edit).

[Previous report](https://internals.rust-lang.org/t/regression-report-stable-2015-12-10-vs-nightly-2015-12-21/3026).

There are 18 fewer root regressions and 409 fewer regressions reported. Presumably this means crate authors affected by RFC 1214 have been updating their crates.

Of the new regressions:

- rand, blake2-rfc -Type inference failure due to [OpAssign for Wrapping](https://github.com/rust-lang/rust/pull/30733). This breakage was reverted upstream yesterday.
- bchannel
  - Send not implemented for T, required by Sender/Reciever
  - Why is this happening?

- prettytable-rs
  - [type ascription macro regression](https://github.com/rust-lang/rust/issues/30531)

- git-hive-protocol
  - Size not implemented for Self
  - What is this? Feel like I’ve seen it a few times.
  - Edit: this is RFC 1214

- bud
  - raw\_pointer\_derive removal

- dbus-serialize, decode, devboat-docker
  - False positive

---

_[View the full topic](https://internals.rust-lang.org/t/regression-report-stable-2015-12-10-vs-nightly-2016-01-05/3063)._