Failing CI on GitHub commits for over a year

[jayvdb]

https://github.com/yegor256/rultor/commits/master every commit is red. No green ticks. This is very bad software engineering practise, as it makes it very unlikely that new failures will be noticed.

If there are tests which are reliably failing on a specific environment, issues should be raised about the problem, and the skip tested on that environment.

[0crat]

@yegor256 please, pay attention to this issue

[yegor256]

@jayvdb indeed, this is not good. We will try to fix that ASAP. Thanks.

[filfreire]

@yegor256 FYI:

Wercker fails with:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project rultor: Fatal error compiling: invalid target release: 1.8 -> [Help 1]

example: https://app.wercker.com/buildstep/5a385d6a30acd801003cb105

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Travis CI fails with:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project rultor: Fatal error compiling: invalid target release: 1.8 -> [Help 1]

example: https://api.travis-ci.org/v3/job/318375413/log.txt

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Shippable fails:

can't find the download button to download the log files.

Language setup on shippable is java openjdk7

example: https://app.shippable.com/github/yegor256/rultor/runs/1980/1/console

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AppVeyor fails with:

[00:00:58] [WARNING] Rule 0: org.apache.maven.plugins.enforcer.AlwaysFail failed with message:
[00:00:58] You should use Unix-like or Mac OS to successfully build Rultor.
[00:00:58]                                                 With an other OS you are still able to check sources with the command:
[00:00:58]                                                 'mvn qulice:check -Pqulice'
[00:00:58] Always fails!

example: https://ci.appveyor.com/project/yegor256/rultor/build/1082

we should probably do these:

• disable appveyor integration and delete badge from documentation;
• mention in documentation that building on Windows env is not supported;

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@yegor256 should we create issues to handle each separately?

[yegor256]

@filfreire yes, please, let's create separate issues and fix this.

[filfreire]

@yegor256 created separate issues to fix this:

1233 - wercker

1234 - travis

1235 - shippable

1236 - appveyor

[Glusk]

The common issue seems to be the fact that the minimum Java version required to build Rultor is Java 8.

[yegor256]

@jayvdb fixed

[0crat]

Job gh:yegor256/rultor#1178 is not assigned, can't get performer