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2014-12-14 12:26:50 -06:00

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- Use http://yaml-online-parser.appspot.com/ to make sure
the yaml file is valid.
http://lint.travis-ci.org/ is recommended elsewhere but does not give helpful
error reports.
- Make sure all of your "-" lines start on the same column
- Use bash scripts for `before_install` and `script` or any part that
has conditional statements
- Make sure they are "executable" (chmod +x)
- Use the following header:
```
#!/usr/bin/env bash
set -ex
```
- Use the `retry` bash function from `before_install.sh` before a command to have it try 3 times before
failing (useful for installing from third party sources).
- Use the `section` function to start a folded section of the script.
Section names must have underscores or dots instead of spaces and must be
accompanied by a corresponding `section_end` call.
- Feel free to cancel a build rather than waiting for it to go to completion
if you have made a change to that branch.
- A VM with 64bit Ubuntu 12.04 is a huge help for debugging.