# \[Swift CI\] Build Failure: 0. OSS - Swift Incremental RA - Ubuntu 16.04 (main) #15664

**URL:** <https://forums.swift.org/t/swift-ci-build-failure-0-oss-swift-incremental-ra-ubuntu-16-04-main-15664/44360>\
**Category:** CI Notifications\
**Created:** [February 1, 2021, 10:22pm UTC](https://forums.swift.org/t/swift-ci-build-failure-0-oss-swift-incremental-ra-ubuntu-16-04-main-15664/44360 "2021-02-01T22:22:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![swift-ci](https://sea2.discourse-cdn.com/swift/user_avatar/forums.swift.org/swift-ci/32/278_2.png) [@swift-ci](https://forums.swift.org/u/swift-ci)\
**Post date:** [February 1, 2021, 10:22pm UTC](https://forums.swift.org/t/swift-ci-build-failure-0-oss-swift-incremental-ra-ubuntu-16-04-main-15664/44360/1 "2021-02-01T22:22:08Z")

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## # [FAILURE] oss-swift-incremental-RA-linux-ubuntu-16\_04 [#15664]

Build URL: [https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-16\_04/15664/](https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-16_04/15664/)  
Project: oss-swift-incremental-RA-linux-ubuntu-16\_04  
Date of build: Mon, 01 Feb 2021 15:30:10 -0600  
Build duration: 51 min

## Identified problems:- Compile Error: This build failed because of a compile error. Below is a list of all errors in the build log:

- [Indication 1](https://ci.swift.org//job/oss-swift-incremental-RA-linux-ubuntu-16_04/15664/consoleFull#-3562149523122a513-f36a-4c87-8ed7-cbc36a1ec144)

## Changes- Commit **14df4d13104dfd1519db59d8de8e7900f7197559** by **tkientzle:**

Compatibility for Optional -\> AnyHashable casts

- **edit** : test/Casting/Casts.swift

- **edit** : stdlib/public/runtime/DynamicCast.cpp

- Commit **5aaabfd5a2f1029c5f8038a59b6bae6800b01ebf** by **tkientzle:**

- Commit **067beb18f94b38902d2dc4dc5426c827814e2447** by **tkientzle:**

- Commit **79728f8eb5e862e5280035dfcfcb2fa41024af5b** by **schuett:**

- Commit **666bd038a15f4caa270dc124134ebaa6cdd4eee3** by **github:**

- Commit **086dc14008a6cdd95c9a6739d76915eb5343174b** by **tkientzle:**

- Commit **748339a83a016b7ab718bc075207c19689c0ba02** by **github:**

- Commit **19a4df331c3de41dac1b2d069cbda863ed0f24e5** by **github:**

- Commit **efbc4edf90faae7fc5c666afc15eb515322e07bb** by **github:**