Less verbose debug logging from inlining integrator
Less verbose debug logging from inlining integrator

The inlining integrator produces relatively verbose and uninteresting
logs.  Move them from a debug log level to a trace level, so that they
can be easily isolated from others.

aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust