Trim the Travis CI job matrix even further for older branches

[johnbillion]

Previously: #40407

Older branches generally have the following test matrix pattern for jobs on Travis CI (with a reduced number of jobs for very old branches):

• JS tests
• Latest PHP version
• Latest 5.x PHP version
• Latest 5.x PHP version with object cache
• PHP 5.2

The Travis CI build process still takes up too much time during the backporting of fixes to older branches. Speeding up (and fixing, see #42385) branch test suites means less stress for committers and less risk taking.

The "Latest 5.x PHP version" job can be removed if there's also a corresponding object cache job. The likelihood of a PHP 5.x issue being introduced into an older branch which doesn't also affect 5.x with an object cache in place is vanishingly small.

I contemplated removing the PHP 5.2 job too, but I'm undecided.

[desrosj]

Moving to Future Release with #42385.

[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

[johnbillion]

I've decided to trim the standard 5.6 job too, leaving just the object cache job for 5.6. See ticket summary above. @netweb any objections?

[netweb]

Replying to johnbillion:

@netweb any objections?

None, go for it

[johnbillion]

In 45005:

Build/Test tools: Further trimming of CI jobs on the 5.0 branch.

This 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.

See #42387

[johnbillion]

In 45006:

Build/Test tools: Further trimming of CI jobs on the 4.9 branch.

This 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 [45005] into the 4.9 branch.

See #42387

[johnbillion]

In 45007:

Build/Test tools: Further trimming of CI jobs on the 4.8 branch.

This 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 [45005] into the 4.8 branch.

See #42387

[johnbillion]

In 45008:

Build/Test tools: Further trimming of CI jobs on the 4.7 branch.

This 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 [45005] into the 4.7 branch.

See #42387

[johnbillion]

In 45009:

Build/Test tools: Further trimming of CI jobs on the 4.6 branch.

This 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 [45005] into the 4.6 branch.

See #42387

[johnbillion]

In 45010:

Build/Test tools: Further trimming of CI jobs on the 4.5 branch.

This 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.

See #42387

[johnbillion]

In 45011:

Build/Test tools: Further trimming of CI jobs on the 4.4 branch.

This 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 [45010] into the 4.4 branch.

See #42387

[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]

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.