Trim the test matrix on Travis for older branches

[johnbillion]

During patch releases (eg. security and maintenance releases), the time that it takes for the Travis builds to run is a substantial hindrance to shipping and backporting quickly.

Given that backports go to 11 branches now, and each branch takes ~20 minutes to test on Travis, that's around 3.5 hours to wait before releasing, and that's not including all the time wasted cancelling builds on branches with multiple commits.

It's time we trimmed down the test matrix on older branches to remove the PHP 5.3, 5.4, 5.5, hhvm, nightly, and non-latest-7.x jobs from the branch builds. That leaves the JS job, and the 5.2, 5.6, 5.6 memcached, and latest 7.x.

The likelihood of a patch release breaking on a version of PHP between 5.3 and 5.5 but not affecting 5.2 or 5.6+ is very low. The risk is greatly outweighed by the benefit of faster and less stressful builds.

[desrosj]

I noticed this week that Travis has a new setting for automatically cancelling builds as mentioned above. Enabling those new settings (even as a beta feature) may also help alleviate some of the stress of the manual cancellations.

[johnbillion]

In 40407:

Build/Test tools: Trim the test matrix on Travis in order to speed up the 4.1 branch build.

This removes all allowed failure jobs, plus PHP 5.3, 5.4, and 5.5 jobs.

See #40407

[johnbillion]

In 40408:

Build/Test tools: Trim the test matrix on Travis in order to speed up the 4.2 branch build.

This removes all allowed failure jobs, plus PHP 5.3, 5.4, and 5.5 jobs.

See #40407

[johnbillion]

In 40409:

Build/Test tools: Trim the test matrix on Travis in order to speed up the 4.3 branch build.

This removes all allowed failure jobs, plus PHP 5.3, 5.4, and 5.5 jobs.

See #40407

[johnbillion]

In 40410:

Build/Test tools: Trim the test matrix on Travis in order to speed up the 4.4 branch build.

This removes all allowed failure jobs, plus PHP 5.3, 5.4, and 5.5 jobs.

See #40407

[johnbillion]

In 40411:

Build/Test tools: Trim the test matrix on Travis in order to speed up the 4.5 branch build.

This removes all allowed failure jobs, plus PHP 5.3, 5.4, and 5.5 jobs.

See #40407

[johnbillion]

In 40412:

Build/Test tools: Trim the test matrix on Travis in order to speed up the 4.6 branch build.

This removes all allowed failure jobs, plus PHP 5.3, 5.4, and 5.5 jobs.

See #40407

[johnbillion]

In 40413:

Build/Test tools: Trim the test matrix on Travis in order to speed up the 4.0 branch build.

This removes all allowed failure jobs, plus PHP 5.3 and 5.4 jobs.

See #40407

[johnbillion]

In 40414:

Build/Test tools: Trim the test matrix on Travis in order to speed up the 3.9 branch build.

This removes the PHP 5.3 and 5.4 jobs.

See #40407

[johnbillion]

In 40415:

Build/Test tools: Trim the test matrix on Travis in order to speed up the 3.8 branch build.

This removes the PHP 5.3 and 5.4 jobs.

See #40407

[johnbillion]

Replying to desrosj:

I noticed this week that Travis has a new setting for automatically cancelling builds as mentioned above. Enabling those new settings (even as a beta feature) may also help alleviate some of the stress of the manual cancellations.

Yeah I think that will help a good deal, too. We enabled it a few weeks ago: #38500.

[johnbillion]

In 44991:

Build/Test tools: Trim the test matrix on Travis in order to speed up the 4.9 branch build.

This removes the PHP 7.1, 7.0, 5.5, 5.4, 5.3, and nightly jobs.

See #42387, #40407

[johnbillion]

In 44992:

Build/Test tools: Trim the test matrix on Travis in order to speed up the 5.0 branch build.

This removes the PHP 7.2, 7.1, 7.0, 5.5, 5.4, 5.3, and nightly jobs.

See #42387, #40407

[SergeyBiryukov]

In 47322:

Build/Test Tools: Trim the test matrix on Travis in order to speed up the 5.1 branch build.

This removes the PHP 7.2, 7.1, 5.5, 5.4, and 5.3 jobs.

This also removes the PHP 5.6 job which runs without an object cache in place as the likelihood of a change being backported that only breaks 5.6 environments without an object cache is small.

Merges [44992] and [45005] to the 5.1 branch.
See #42387, #40407.

[SergeyBiryukov]

In 47323:

Build/Test Tools: Move the PHP 7.3 Travis job in 5.0 branch after the JS tests, for consistency with other branches.

See #42387, #40407.

[desrosj]

#48413 was marked as a duplicate.

[desrosj]

In 47928:

Build/Test Tools: Trim the test matrix on Travis in order to speed up the 5.2 branch build.

This removes the PHP 7.2 and 7.1 jobs.

This also removes the PHP 7.3 job which runs without an object cache in place as the likelihood of a change being backported that only breaks 7.3 without an object cache is small.

See #42387, #40407.