Make sure the debug log contains line breaks

[andeya]

Many debug logs have no line breaks, so fix them here.

• With pull requests:
  • Open your pull request against master
  • Your pull request should have no more than two commits, if not you should squash them.
  • It should pass all tests in the available continuous integrations systems such as TravisCI.
  • You should add/modify tests to cover your proposed code changes.
  • If your pull request contains a new feature, please document it on the README.

[codecov]

Codecov Report

Merging #1650 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1650      +/-   ##
==========================================
+ Coverage   99.28%   99.29%   +<.01%     
==========================================
  Files          40       40              
  Lines        1971     1973       +2     
==========================================
+ Hits         1957     1959       +2     
  Misses         10       10              
  Partials        4        4

Impacted Files	Coverage Δ
debug.go	95.91% <100%> (+0.17%)	⬆️

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