fixing vet issues ... most relating to the Examples

[domgreen]

No description provided.

[codecov-io]

Codecov Report

Merging #132 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #132   +/-   ##
=======================================
  Coverage   73.68%   73.68%           
=======================================
  Files          36       36           
  Lines        1292     1292           
=======================================
  Hits          952      952           
  Misses        293      293           
  Partials       47       47

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[googlebot]

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[yifanzz]

Did you mean logrus logger here?