Pin travis build to 3.6.6
State: closed

xref #24359 

Labels:
name: CI
description: Continuous Integration

Comments:
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24360?src=pr&el=h1) Report
> Merging [#24360](https://codecov.io/gh/pandas-dev/pandas/pull/24360?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/14c33b0e531ba955ae20a6e37750261133e5391e?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/24360/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/24360?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #24360   +/-   ##
=======================================
  Coverage   92.29%   92.29%           
=======================================
  Files         162      162           
  Lines       51808    51808           
=======================================
  Hits        47817    47817           
  Misses       3991     3991
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.7% <ø> (ø)` | :arrow_up: |
| #single | `42.99% <ø> (ø)` | :arrow_up: |


------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24360?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24360?src=pr&el=footer). Last update [14c33b0...e252df4](https://codecov.io/gh/pandas-dev/pandas/pull/24360?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).

# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24360?src=pr&el=h1) Report
> Merging [#24360](https://codecov.io/gh/pandas-dev/pandas/pull/24360?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/14c33b0e531ba955ae20a6e37750261133e5391e?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/24360/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/24360?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #24360   +/-   ##
=======================================
  Coverage   92.29%   92.29%           
=======================================
  Files         162      162           
  Lines       51808    51808           
=======================================
  Hits        47817    47817           
  Misses       3991     3991
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.7% <ø> (ø)` | :arrow_up: |
| #single | `42.99% <ø> (ø)` | :arrow_up: |


------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24360?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24360?src=pr&el=footer). Last update [14c33b0...e252df4](https://codecov.io/gh/pandas-dev/pandas/pull/24360?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).

All green. Merging to get the CI passing.