On 26th October my Travis CI builds suddenly started to fail and none of the mentioned workarounds are working for me (like https://github.com/travis-ci/travis-ci/issues/6193). The exact issue being reported in my lint report:
The SDK platform-tools version (23.0.1) is too old to check APIs compiled with API 25; please update
Here's the Travis job's log: https://api.travis-ci.org/jobs/294869249/log.txt?deansi=true
The link to my PR: https://github.com/edx/edx-app-android/pull/1020
platform-tools revision 26.0.2 was recently released whose download is finishing with the wrong checksum, thus Travis is using the fallback platform-tools revision 23.0.1 for running lint on my project causing the issue.
Here's the error excerpt from the job's log (https://api.travis-ci.org/jobs/294869249/log.txt?deansi=true):
Installing Archives:
Preparing to install archives
Downloading Android SDK Platform-tools, revision 26.0.2
Download finished with wrong checksum. Expected b8130e7c390496cff12bf9355739bd41eed6a0a5, got 668ff8e319715175ff628ad52b124f154275fe2d.
Done. Nothing was installed.
Any idea for a fix?
This issue got auto solved somehow on Travis's side and I had to do nothing on my end.
More details can be found in this issue that I created on Travis's Github: