Mina Deploy Not Working All the Time - ruby-on-rails

Question

I have been having this issue for 3 months or so now. When I do a mina deploy no errors will happen and it shows starting/stopping of sidekiq etc.. but sometimes the latest code doesn't actually deploy to the production server. Using the same code I have never had this issue on the staging environment either, which is really confusing.
To fix the issue, I have to manually kill the unicorn pid and then do a re-deploy and this works every time.
I'm not very familiar with any of this and it is mainly copied from articles & SO, but do you see anything in the code that could be causing issues? Should I be stopping unicorn and then starting it back up instead of just restarting it? My thought there is that I might miss requests.
desc "Deploys the current version to the server."
task :deploy => :environment do
deploy do
# stop accepting new workers
invoke :'sidekiq:quiet'
invoke :'git:clone'
invoke :'deploy:link_shared_paths'
invoke :'bundle:install'
invoke :'rails:db_migrate'
invoke :'rails:assets_precompile'
invoke :'deploy:cleanup'
to :launch do
invoke :'sidekiq:restart'
invoke :'unicorn:restart'
end
end
Is there anyway I can output statements at certain times inside of the deploy or have it create a log?
-- EDIT: (ADDED TRACE) --
This is a passing trace. Is there some type of error that should show up on a failing trace that I can look for? It doesn't fail all the time, but I can run trace each time to try to catch a failing one.
** Invoke deploy (first_time)
** Invoke environment (first_time)
** Execute environment
** Invoke rbenv:load (first_time)
** Execute rbenv:load
** Execute deploy
** Invoke sidekiq:quiet (first_time)
** Invoke environment
** Execute sidekiq:quiet
** Invoke git:clone (first_time)
** Execute git:clone
** Invoke deploy:link_shared_paths (first_time)
** Execute deploy:link_shared_paths
** Invoke bundle:install (first_time)
** Execute bundle:install
** Invoke rails:db_migrate (first_time)
** Execute rails:db_migrate
** Invoke rails:assets_precompile (first_time)
** Execute rails:assets_precompile
** Invoke deploy:cleanup (first_time)
** Execute deploy:cleanup
** Invoke sidekiq:restart (first_time)
** Execute sidekiq:restart
** Invoke sidekiq:stop (first_time)
** Invoke environment
** Execute sidekiq:stop
** Invoke sidekiq:start (first_time)
** Invoke environment
** Execute sidekiq:start
** Invoke unicorn:restart (first_time)
** Invoke environment
** Execute unicorn:restart
-----> Loading environment
$ source ~/.bashrc
-----> Loading rbenv
$ export RBENV_ROOT="$HOME/.rbenv"
$ export PATH="$HOME/.rbenv/bin:$PATH"
$ eval "$(rbenv init -)"
-----> Creating a temporary build path
$ touch "deploy.lock"
$ mkdir -p "$build_path"
$ cd "$build_path"
-----> Quiet sidekiq (stop accepting new work)
$ RAILS_ENV="staging" bundle exec sidekiqctl quiet /home/deploy/PATH $ RAILS_ENV="staging" bundle exec sidekiqctl quiet /home/deploy/PATHNAME//shared/pids/sidekiq.pid
-----> Fetching new git commits
$ (cd "/home/deploy/PATHNAME//scm" && git fetch "git#github.com:k $ (cd "/home/deploy/PATHNAME//scm" && git fetch "git#github.com:kenmazaika/PATHNAME.git" "master:master" --force)
-----> Using git branch 'master'
$ git clone "/home/deploy/PATHNAME//scm" . --recursive --branch " $ git clone "/home/deploy/PATHNAME//scm" . --recursive --branch "master"
Cloning into '.'...
done.
-----> Using this git commit
$ git --no-pager log --format='%aN (%h):%n> %s' -n 1
MYNAME (a0ba681):
> Merge pull request #2040 from repo/issue2039
$ rm -rf .git
-----> Symlinking shared paths
$ mkdir -p "./config"
$ mkdir -p "."
$ rm -rf "./config/database.yml"
$ ln -s "/home/deploy/PATHNAME//shared/config/database.yml" "./co $ ln -s "/home/deploy/PATHNAME//shared/config/database.yml" "./config/database.yml"
$ rm -rf "./log"
$ ln -s "/home/deploy/PATHNAME//shared/log" "./log"
$ rm -rf "./config/secrets.yml"
$ ln -s "/home/deploy/PATHNAME//shared/config/secrets.yml" "./con $ ln -s "/home/deploy/PATHNAME//shared/config/secrets.yml" "./config/secrets.yml"
-----> Installing gem dependencies using Bundler
$ mkdir -p "/home/deploy/PATHNAME//shared/bundle"
$ mkdir -p "./vendor"
$ ln -s "/home/deploy/PATHNAME//shared/bundle" "./vendor/bundle"
$ bundle install --without development:test --path "./vendor/bundle" --de $ bundle install --without development:test --path "./vendor/bundle" --deployment
### USING A BUNCH OF GEMS ###
-----> DB migrations unchanged; skipping DB migration
-----> Skipping asset precompilation
$ cp -R "/home/deploy/PATHNAME//current/public/assets" "./public"
-----> Cleaning up old releases (keeping 5)
$ cd "/home/deploy/PATHNAME//releases" || exit 15
$ count=`ls -1d [0-9]* | sort -rn | wc -l`
$ remove=$((count > 5 ? count - 5 : 0))
$ ls -1d [0-9]* | sort -rn | tail -n $remove | xargs rm -rf {}
-----> Build finished
-----> Moving build to releases/301
$ mv "$build_path" "$release_path"
-----> Updating the current symlink
$ ln -nfs "$release_path" "current"
-----> Launching
$ cd "$release_path"
-----> Stop sidekiq
$ RAILS_ENV="staging" bundle exec sidekiqctl stop /home/deploy/PATHl $ RAILS_ENV="staging" bundle exec sidekiqctl stop /home/deploy/PATHNAME//shared/pids/sidekiq.pid 10
Sidekiq shut down gracefully.
-----> Start sidekiq
$ nohup bundle exec sidekiq -e staging -C /home/deploy/PATHNAME//current/config/sidekiq.yml -i 0 -P /home/deploy/PATHNAME//shared/pids/si $ nohup bundle exec sidekiq -e staging -C /home/deploy/PATHNAME//current/config/sidekiq.yml -i 0 -P /home/deploy/PATHNAME//shared/pids/sidekiq.pid >> /home/deploy/PATHNAME//current/log/sidekiq.log 2>&1 &
-----> Starting Unicorn...