How to stop IntelliJ truncating output when I run a build?

Question

When I run our build from IntelliJ it pumps out a lot of debugging.

But it gets truncated in the Run console.

Can I make IntelliJ preserve more output?
Or, preferably, all of it?

Answer 1

By a popular request Override console cycle buffer size setting was added to the UI 9/14/16:

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Original answer for older versions:

Edit your IDEA_HOMEinidea.properties file, and increase this setting:

#-----------------------------------------------------------------------
# This option controls console cyclic buffer: keeps the console output size not higher than the specified buffer size (Kb). Older lines are deleted.
# In order to disable cycle buffer use idea.cycle.buffer.size=disabled
idea.cycle.buffer.size=1024

then restart IntelliJ.