[swift-dev] [Swift CI] Build Failure: 0. OSS - Swift Incremental RA - OS X (master) #2761

[Ben Langmuir]

I was tired of seeing and writing these emails:

commit 24f685c1d29cd926b1674e099bfcca6ed8673491
Author: Ben Langmuir <blangmuir at apple.com>
Date:   Wed Mar 16 10:36:02 2016

    Decrease the probability that stdlib/Hashing.swift will fail
    
    Bump the number of trials from 10 to 14, which makes the test orders of
    magnitude less likely to fail.  For a range of size 10, doing 10 trials
    meant that a single call to checkRange would fail ~0.03% of the time;
    with 14 trials the spurious failure rate is ~0.0003%. We have 10 calls
    to checkRange in this test with ranges of size <= 10.
    
    While this test didn't fail that often before, we have a very large
    number of automated builds and it has been a constant low-level source
    of friction that this test fails and we have to look at and then ignore
    the results.


> On Mar 16, 2016, at 10:01 AM, Jordan Rose via swift-dev <swift-dev at swift.org> wrote:
> 
> Unrelated and harmless: this test is probabilistic.
> 
>> On Mar 16, 2016, at 10:00 , no-reply at swift.org <mailto:no-reply at swift.org> wrote:
>> 
>> [FAILURE] oss-swift-incremental-RA-osx [#2761]
>> 
>> Build URL:	https://ci.swift.org/job/oss-swift-incremental-RA-osx/2761/ <https://ci.swift.org/job/oss-swift-incremental-RA-osx/2761/>
>> Project:	oss-swift-incremental-RA-osx
>> Date of build:	Wed, 16 Mar 2016 09:31:51 -0700
>> Build duration:	29 min
>> Identified problems:
>> 
>> Regression test failed: This build failed because a regression test in the test suite FAILed. Below is a list of all errors:
>> Indication 1 <https://ci.swift.org//job/oss-swift-incremental-RA-osx/2761/consoleFull#-1004795036fca400bf-2f4a-462e-b517-e058d770b2d7>
>> Tests: 
>> 
>> Name: Swift
>> Failed: 1 test(s), Passed: 7772 test(s), Total: 7773 test(s)
>> Failed: Swift.stdlib.Hashing.swift <https://ci.swift.org/job/oss-swift-incremental-RA-osx/2761/testReport/junit/Swift/stdlib/Hashing_swift>
>> Name: Swift-Unit
>> Failed: 0 test(s), Passed: 278 test(s), Total: 278 test(s)
>> 
>> Changes
>> 
>> Commit c43943d7a884f7b43a6ac06877c29656d5214653 by jordan_rose:
>> [build-script] Remove -X option for "edit-only" Xcode projects.
>> 
>> edit: utils/build-script-impl
>> edit: README.md
>> edit: CMakeLists.txt
>> edit: cmake/modules/SwiftAddCustomCommandTarget.cmake
>> edit: utils/build-script
> 
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