backup:create CRON=1 generates noise about I18N fuzzy messages.

Summary

running bundle exec rake gitlab:backup:create RAILS_ENV=production CRON=1 creates noise about fuzzy messages in the po files, while according to the documentation the command should not generate any output whit the cron flag if there is no error. Log output:

Steps to reproduce

running sudu -u git -H bundle exec rake gitlab:backup:create RAILS_ENV=production CRON=1

What is the current bug behavior?

Unnecessary warnings on stderr

What is the expected correct behavior?

No output unless backup fails as stated in the documentation for gitlab:backup:create

Relevant logs and/or screenshots

sudo -u git -H bundle exec rake gitlab:backup:create RAILS_ENV=production CRON=1
Warning: fuzzy message was ignored.
  /opt/gitlabhq-11.10/locale/en/gitlab.po: msgid 'Tag'

Output of checks

(If you are reporting a bug on GitLab.com, write: This bug happens on GitLab.com)

Results of GitLab environment info

Expand for output related to GitLab environment info

sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production
System information
System:         Gentoo 2.6
Current User:   git
Using RVM:      no
Ruby Version:   2.5.5p157
Gem Version:    3.0.3
Bundler Version:1.17.3
Rake Version:   12.3.2
Redis Version:  4.0.10
Git Version:    2.21.0
Sidekiq Version:5.2.5
Go Version:     go1.12.4 linux/amd64
GitLab information
Version:        11.10.4
Revision:       62c464651d2
Directory:      /opt/gitlabhq-11.10
DB Adapter:     PostgreSQL
DB Version:     11.3
URL:            https://[redacted]
HTTP Clone URL: https://[redacted]/some-group/some-project.git
SSH Clone URL:  git@[redacted]:some-group/some-project.git
Using LDAP:     no
Using Omniauth: yes
Omniauth Providers: github, google_oauth2
GitLab Shell
Version:        9.0.0
Repository storage paths:
default:      /var/lib/git/repositories
GitLab Shell path:              /var/lib/gitlab-shell
Git:            /usr/bin/git

Results of GitLab application Check

Expand for output related to the GitLab application check

sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true
Checking GitLab subtasks ...
Checking GitLab Shell ...
GitLab Shell: ... GitLab Shell version >= 9.0.0 ? ... OK (9.0.0)
Running /var/lib/gitlab-shell/bin/check
Check GitLab API access: OK
Redis available via internal API: OK
Access to /var/lib/git/.ssh/authorized_keys: OK
gitlab-shell self-check successful
Checking GitLab Shell ... Finished
Checking Gitaly ...
Gitaly: ... default ... OK
Checking Gitaly ... Finished
Checking Sidekiq ...
Sidekiq: ... Running? ... yes
Number of Sidekiq processes ... 1
Checking Sidekiq ... Finished
Checking Incoming Email ...
Incoming Email: ... Reply by email is disabled in config/gitlab.yml
Checking Incoming Email ... Finished
Checking LDAP ...
LDAP: ... LDAP is disabled in config/gitlab.yml
Checking LDAP ... Finished
Checking GitLab App ...
Git configured correctly? ... yes
Database config exists? ... yes
All migrations up? ... yes
Database contains orphaned GroupMembers? ... no
GitLab config exists? ... yes
GitLab config up to date? ... yes
Log directory writable? ... yes
Tmp directory writable? ... yes
Uploads directory exists? ... yes
Uploads directory has correct permissions? ... yes
Uploads directory tmp has correct permissions? ... yes
Projects have namespace: ...
4/1 ... yes
6/4 ... yes
7/5 ... yes
7/6 ... yes
7/7 ... yes
7/8 ... yes
7/9 ... yes
7/11 ... yes
5/12 ... yes
5/13 ... yes
5/14 ... yes
5/16 ... yes
5/17 ... yes
5/18 ... yes
5/19 ... yes
5/21 ... yes
5/23 ... yes
5/24 ... yes
5/25 ... yes
5/26 ... yes
5/27 ... yes
5/28 ... yes
5/29 ... yes
5/30 ... yes
2/40 ... yes
2/41 ... yes
2/42 ... yes
9/43 ... yes
9/44 ... yes
9/45 ... yes
8/46 ... yes
8/47 ... yes
8/48 ... yes
10/49 ... yes
10/50 ... yes
8/51 ... yes
2/52 ... yes
11/53 ... yes
5/54 ... yes
2/55 ... yes
12/56 ... yes
12/57 ... yes
12/58 ... yes
15/59 ... yes
10/60 ... yes
2/61 ... yes
2/62 ... yes
2/63 ... yes
5/64 ... yes
2/65 ... yes
5/66 ... yes
5/67 ... yes
2/68 ... yes
2/69 ... yes
2/70 ... yes
2/71 ... yes
2/72 ... yes
5/74 ... yes
2/75 ... yes
2/76 ... yes
12/77 ... yes
12/78 ... yes
5/79 ... yes
2/80 ... yes
Redis version >= 2.8.0? ... yes
Ruby version >= 2.5.3 ? ... yes (2.5.5)
Git version >= 2.18.0 ? ... yes (2.21.0)
Git user has default SSH configuration? ... yes
Active users: ... 5
Checking GitLab App ... Finished
Checking GitLab subtasks ... Finished