Software development bot that automatically repairs build failures on Travis Continuous Integration. Join the bot revolution! 🌟🤖🌟💞
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Repairnator: a program repair bot for continuous integration

Repairnator is a software development bot that automatically repairs build failures on Travis CI. It monitors failing Travis builds, tries to locally reproduce the failing builds and finally attempts to repair them with the state-of-the-art of automated program repair tools for Java.

-- The Repairnator team

Want to join the Repairnator community? To receive monthly news about Repairnator, shoot an email at!

About Repairnator



Academic papers



The following is just a quickstart. For more advanced usage, go to read the usage section of our documentation.


In order to run Repairnator with the provided scripts, you'll need:

  • git
  • docker
  • uuidgen utility tools (available for Mac & Linux)
  • a Github API key (Go to Github Personal Access Tokens, and click on "Generate new token".)

Setup Repairnator

All Repairnator scripts are located in the directory repairnator/scripts. The scripts use the global configuration set in repairnator/scripts/config/repairnator.cfg. You can define your own configuration in a file repairnator.cfg located in your home. For more information about repairnator.cfg read our complete documentation.

git clone
cd repairnator

# edit the file to specify the mandatory elements (you must add the GitHub Personal Access Token here)
cp repairnator/scripts/config/repairnator.cfg ~
vi ~/repairnator.cfg

Launch Repairnator on a given Travis Build ID

From a Travis URL like this one: you can retrieve a Build ID by taking the last part of the URL. Here it is: 352395977.

All you have to do to launch Repairnator to reproduce and try fixing this build is then to go in repairnator/scripts/ and launch with the build ID as argument:

# set $HOME_REPAIR and $GITHUB_OAUTH in repairnator/scripts/config/repairnator.cfg
cp repairnator/scripts/config/repairnator.cfg ~
vi ~/repairnator.cfg

cd repairnator/scripts

# start a docker container and run Repairnator on your specified Build ID.
./ 352395977

# When the docker container is done you can find logs and serialized files in the `$HOME_REPAIR/logs` path.
ls $HOME_REPAIR/logs

Launch Repairnator to analyze and repair failing builds in real-time

You can launch Repairnator to analyze Travis CI builds in realtime and to repair failing ones.

First open your repairnator.cfg config file (see above) and edit the values under Realtime scanner configuration section:

  • DURATION is an optional value: if the value is left blank, the process will never stop; else it will last the specified duration (pay attention on the format, see:
  • WHITELIST_PATH and BLACKLIST_PATH can be left on the default value, or you can use the files available in repairnator/repairnator-realtime/src/main/resources

Then just run the script

  • this generates build reproduction info and patches as local files in a folder named logs/
  • in this default setup, no MongoDB is used, no email notification is done


If you want to bring your own tool in Repairnator, have a look on contribution guidelines 😄

Content of the repository

This repository is organized as follows:

  • doc contains some documentation about Repairnator and its usage
  • repairnator is the main program dedicated to this project: it can automatically scan large set of projects, detect failing builds, reproduce them and try to repair them using our tools
  • bears-usage is a side project dedicated to gather data from repairnator.json files
  • resources contains mainly data produced by Repairnator and scripts to retrieve those data. It also contain the schema of repairnator.json files.
  • website contains all data to produce repairnator website

Each directory contains its own Readme explaining its own internal organization.



The content of this repository is licensed under the MIT terms.