diff --git a/src/Makefile.PL b/src/Makefile.PL
index 36b3e9921..9b04da7fe 100644
--- a/src/Makefile.PL
+++ b/src/Makefile.PL
@@ -1,5 +1,7 @@
 # IMPORTANT: if you delete this file your app will not work as
 # expected.  you have been warned
+use strict;
+use warnings;
 use inc::Module::Install;
 
 name 'Hydra';
diff --git a/src/lib/Hydra/Config.pm b/src/lib/Hydra/Config.pm
index a681f1c0b..bb9918225 100644
--- a/src/lib/Hydra/Config.pm
+++ b/src/lib/Hydra/Config.pm
@@ -1,5 +1,8 @@
 package Hydra::Config;
 
+use strict;
+use warnings;
+
 our %configGeneralOpts = (-UseApacheInclude => 1, -IncludeAgain => 1, -IncludeRelative => 1);
 
 1;
diff --git a/src/lib/Hydra/Event.pm b/src/lib/Hydra/Event.pm
index cd8bdde2d..e39543085 100644
--- a/src/lib/Hydra/Event.pm
+++ b/src/lib/Hydra/Event.pm
@@ -1,6 +1,7 @@
 package Hydra::Event;
 
 use strict;
+use warnings;
 use Hydra::Event::BuildFinished;
 use Hydra::Event::BuildStarted;
 use Hydra::Event::StepFinished;
diff --git a/src/lib/Hydra/Helper/AddBuilds.pm b/src/lib/Hydra/Helper/AddBuilds.pm
index d928943ae..6923c72a1 100644
--- a/src/lib/Hydra/Helper/AddBuilds.pm
+++ b/src/lib/Hydra/Helper/AddBuilds.pm
@@ -1,6 +1,7 @@
 package Hydra::Helper::AddBuilds;
 
 use strict;
+use warnings;
 use utf8;
 use Encode;
 use JSON;
diff --git a/src/lib/Hydra/Helper/CatalystUtils.pm b/src/lib/Hydra/Helper/CatalystUtils.pm
index cd3a0fd79..0b48e4557 100644
--- a/src/lib/Hydra/Helper/CatalystUtils.pm
+++ b/src/lib/Hydra/Helper/CatalystUtils.pm
@@ -2,6 +2,7 @@ package Hydra::Helper::CatalystUtils;
 
 use utf8;
 use strict;
+use warnings;
 use Exporter;
 use Readonly;
 use Nix::Store;
diff --git a/src/lib/Hydra/Helper/Email.pm b/src/lib/Hydra/Helper/Email.pm
index 44366f43a..6bd9e5178 100644
--- a/src/lib/Hydra/Helper/Email.pm
+++ b/src/lib/Hydra/Helper/Email.pm
@@ -1,6 +1,7 @@
 package Hydra::Helper::Email;
 
 use strict;
+use warnings;
 use Email::MIME;
 use Email::Sender::Simple qw(sendmail);
 use Exporter 'import';
diff --git a/src/lib/Hydra/Helper/Escape.pm b/src/lib/Hydra/Helper/Escape.pm
index 3037951f8..8458f8854 100644
--- a/src/lib/Hydra/Helper/Escape.pm
+++ b/src/lib/Hydra/Helper/Escape.pm
@@ -1,6 +1,7 @@
 package Hydra::Helper::Escape;
 
 use strict;
+use warnings;
 use base qw(Exporter);
 use Hydra::Helper::AttributeSet;
 
diff --git a/src/lib/Hydra/Helper/Nix.pm b/src/lib/Hydra/Helper/Nix.pm
index bd294b736..953a71141 100644
--- a/src/lib/Hydra/Helper/Nix.pm
+++ b/src/lib/Hydra/Helper/Nix.pm
@@ -1,6 +1,7 @@
 package Hydra::Helper::Nix;
 
 use strict;
+use warnings;
 use Exporter;
 use File::Path;
 use File::Basename;
diff --git a/src/lib/Hydra/Model/DB.pm b/src/lib/Hydra/Model/DB.pm
index 7514302e1..d3a401c32 100644
--- a/src/lib/Hydra/Model/DB.pm
+++ b/src/lib/Hydra/Model/DB.pm
@@ -1,6 +1,7 @@
 package Hydra::Model::DB;
 
 use strict;
+use warnings;
 use base 'Catalyst::Model::DBIC::Schema';
 
 sub getHydraPath {
diff --git a/src/lib/Hydra/Plugin.pm b/src/lib/Hydra/Plugin.pm
index 119d27382..a3526427f 100644
--- a/src/lib/Hydra/Plugin.pm
+++ b/src/lib/Hydra/Plugin.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin;
 
 use strict;
+use warnings;
 use Module::Pluggable
     search_path => "Hydra::Plugin",
     instantiate => 'new';
diff --git a/src/lib/Hydra/Plugin/BazaarInput.pm b/src/lib/Hydra/Plugin/BazaarInput.pm
index db26172f8..458f5141a 100644
--- a/src/lib/Hydra/Plugin/BazaarInput.pm
+++ b/src/lib/Hydra/Plugin/BazaarInput.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::BazaarInput;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use Digest::SHA qw(sha256_hex);
 use File::Path;
diff --git a/src/lib/Hydra/Plugin/BitBucketPulls.pm b/src/lib/Hydra/Plugin/BitBucketPulls.pm
index 1a50f6ec1..5371d5f04 100644
--- a/src/lib/Hydra/Plugin/BitBucketPulls.pm
+++ b/src/lib/Hydra/Plugin/BitBucketPulls.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::BitBucketPulls;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use HTTP::Request;
 use LWP::UserAgent;
diff --git a/src/lib/Hydra/Plugin/BitBucketStatus.pm b/src/lib/Hydra/Plugin/BitBucketStatus.pm
index 097bed00e..72ed3b6bc 100644
--- a/src/lib/Hydra/Plugin/BitBucketStatus.pm
+++ b/src/lib/Hydra/Plugin/BitBucketStatus.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::BitBucketStatus;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use HTTP::Request;
 use JSON;
diff --git a/src/lib/Hydra/Plugin/CircleCINotification.pm b/src/lib/Hydra/Plugin/CircleCINotification.pm
index 398fe066d..a2eb26a47 100644
--- a/src/lib/Hydra/Plugin/CircleCINotification.pm
+++ b/src/lib/Hydra/Plugin/CircleCINotification.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::CircleCINotification;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use HTTP::Request;
 use LWP::UserAgent;
diff --git a/src/lib/Hydra/Plugin/CompressLog.pm b/src/lib/Hydra/Plugin/CompressLog.pm
index bf8d4327c..10e8f6cc3 100644
--- a/src/lib/Hydra/Plugin/CompressLog.pm
+++ b/src/lib/Hydra/Plugin/CompressLog.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::CompressLog;
 
 use strict;
+use warnings;
 use utf8;
 use parent 'Hydra::Plugin';
 use Hydra::Helper::CatalystUtils;
diff --git a/src/lib/Hydra/Plugin/CoverityScan.pm b/src/lib/Hydra/Plugin/CoverityScan.pm
index f395100fe..53f7c3f67 100644
--- a/src/lib/Hydra/Plugin/CoverityScan.pm
+++ b/src/lib/Hydra/Plugin/CoverityScan.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::CoverityScan;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use File::Basename;
 use LWP::UserAgent;
diff --git a/src/lib/Hydra/Plugin/DarcsInput.pm b/src/lib/Hydra/Plugin/DarcsInput.pm
index 0091819a5..42f6a9a41 100644
--- a/src/lib/Hydra/Plugin/DarcsInput.pm
+++ b/src/lib/Hydra/Plugin/DarcsInput.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::DarcsInput;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use Digest::SHA qw(sha256_hex);
 use File::Path;
diff --git a/src/lib/Hydra/Plugin/DeclarativeJobsets.pm b/src/lib/Hydra/Plugin/DeclarativeJobsets.pm
index 2b6771b55..f59fa8586 100644
--- a/src/lib/Hydra/Plugin/DeclarativeJobsets.pm
+++ b/src/lib/Hydra/Plugin/DeclarativeJobsets.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::DeclarativeJobsets;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use Hydra::Helper::AddBuilds;
 
diff --git a/src/lib/Hydra/Plugin/EmailNotification.pm b/src/lib/Hydra/Plugin/EmailNotification.pm
index 4e6c7809a..721365e15 100644
--- a/src/lib/Hydra/Plugin/EmailNotification.pm
+++ b/src/lib/Hydra/Plugin/EmailNotification.pm
@@ -2,6 +2,7 @@ package Hydra::Plugin::EmailNotification;
 
 use utf8;
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use POSIX qw(strftime);
 use Template;
diff --git a/src/lib/Hydra/Plugin/GitInput.pm b/src/lib/Hydra/Plugin/GitInput.pm
index 848c0deed..cd8d23e26 100644
--- a/src/lib/Hydra/Plugin/GitInput.pm
+++ b/src/lib/Hydra/Plugin/GitInput.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::GitInput;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use Digest::SHA qw(sha256_hex);
 use File::Path;
diff --git a/src/lib/Hydra/Plugin/GiteaStatus.pm b/src/lib/Hydra/Plugin/GiteaStatus.pm
index 75796053e..567dfd097 100644
--- a/src/lib/Hydra/Plugin/GiteaStatus.pm
+++ b/src/lib/Hydra/Plugin/GiteaStatus.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::GiteaStatus;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 
 use HTTP::Request;
diff --git a/src/lib/Hydra/Plugin/GithubPulls.pm b/src/lib/Hydra/Plugin/GithubPulls.pm
index 6a3cc9511..fb497c768 100644
--- a/src/lib/Hydra/Plugin/GithubPulls.pm
+++ b/src/lib/Hydra/Plugin/GithubPulls.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::GithubPulls;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use HTTP::Request;
 use LWP::UserAgent;
diff --git a/src/lib/Hydra/Plugin/GithubRefs.pm b/src/lib/Hydra/Plugin/GithubRefs.pm
index 408159dd3..1de2672d8 100644
--- a/src/lib/Hydra/Plugin/GithubRefs.pm
+++ b/src/lib/Hydra/Plugin/GithubRefs.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::GithubRefs;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use HTTP::Request;
 use LWP::UserAgent;
diff --git a/src/lib/Hydra/Plugin/GithubStatus.pm b/src/lib/Hydra/Plugin/GithubStatus.pm
index e3dfc533a..cda7426ab 100644
--- a/src/lib/Hydra/Plugin/GithubStatus.pm
+++ b/src/lib/Hydra/Plugin/GithubStatus.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::GithubStatus;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use HTTP::Request;
 use JSON;
diff --git a/src/lib/Hydra/Plugin/GitlabPulls.pm b/src/lib/Hydra/Plugin/GitlabPulls.pm
index b44a1a985..3249ecf86 100644
--- a/src/lib/Hydra/Plugin/GitlabPulls.pm
+++ b/src/lib/Hydra/Plugin/GitlabPulls.pm
@@ -15,6 +15,7 @@
 package Hydra::Plugin::GitlabPulls;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use HTTP::Request;
 use LWP::UserAgent;
diff --git a/src/lib/Hydra/Plugin/GitlabStatus.pm b/src/lib/Hydra/Plugin/GitlabStatus.pm
index 483d99bdc..d19877edd 100644
--- a/src/lib/Hydra/Plugin/GitlabStatus.pm
+++ b/src/lib/Hydra/Plugin/GitlabStatus.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::GitlabStatus;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use HTTP::Request;
 use JSON;
diff --git a/src/lib/Hydra/Plugin/HipChatNotification.pm b/src/lib/Hydra/Plugin/HipChatNotification.pm
index 9a7385c40..415cfafb5 100644
--- a/src/lib/Hydra/Plugin/HipChatNotification.pm
+++ b/src/lib/Hydra/Plugin/HipChatNotification.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::HipChatNotification;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use LWP::UserAgent;
 use Hydra::Helper::CatalystUtils;
diff --git a/src/lib/Hydra/Plugin/InfluxDBNotification.pm b/src/lib/Hydra/Plugin/InfluxDBNotification.pm
index 21a3fa319..62200cc90 100644
--- a/src/lib/Hydra/Plugin/InfluxDBNotification.pm
+++ b/src/lib/Hydra/Plugin/InfluxDBNotification.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::InfluxDBNotification;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use HTTP::Request;
 use LWP::UserAgent;
diff --git a/src/lib/Hydra/Plugin/MercurialInput.pm b/src/lib/Hydra/Plugin/MercurialInput.pm
index 8a9b4b431..3aaa0ba3d 100644
--- a/src/lib/Hydra/Plugin/MercurialInput.pm
+++ b/src/lib/Hydra/Plugin/MercurialInput.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::MercurialInput;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use Digest::SHA qw(sha256_hex);
 use File::Path;
diff --git a/src/lib/Hydra/Plugin/PathInput.pm b/src/lib/Hydra/Plugin/PathInput.pm
index d5c490f07..e7d98da2c 100644
--- a/src/lib/Hydra/Plugin/PathInput.pm
+++ b/src/lib/Hydra/Plugin/PathInput.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::PathInput;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use POSIX qw(strftime);
 use Hydra::Helper::Nix;
diff --git a/src/lib/Hydra/Plugin/RunCommand.pm b/src/lib/Hydra/Plugin/RunCommand.pm
index 7cfb63c51..33295e507 100644
--- a/src/lib/Hydra/Plugin/RunCommand.pm
+++ b/src/lib/Hydra/Plugin/RunCommand.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::RunCommand;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use experimental 'smartmatch';
 use JSON;
diff --git a/src/lib/Hydra/Plugin/S3Backup.pm b/src/lib/Hydra/Plugin/S3Backup.pm
index 346cf239b..bdd23b2f8 100644
--- a/src/lib/Hydra/Plugin/S3Backup.pm
+++ b/src/lib/Hydra/Plugin/S3Backup.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::S3Backup;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use File::Temp;
 use File::Basename;
diff --git a/src/lib/Hydra/Plugin/SlackNotification.pm b/src/lib/Hydra/Plugin/SlackNotification.pm
index 387f92c40..5320dd7b5 100644
--- a/src/lib/Hydra/Plugin/SlackNotification.pm
+++ b/src/lib/Hydra/Plugin/SlackNotification.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::SlackNotification;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use HTTP::Request;
 use LWP::UserAgent;
diff --git a/src/lib/Hydra/Plugin/SoTest.pm b/src/lib/Hydra/Plugin/SoTest.pm
index aed7a1b8c..e3abf4ccd 100644
--- a/src/lib/Hydra/Plugin/SoTest.pm
+++ b/src/lib/Hydra/Plugin/SoTest.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::SoTest;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use Hydra::Helper::CatalystUtils;
 use HTTP::Request;
diff --git a/src/lib/Hydra/Plugin/SubversionInput.pm b/src/lib/Hydra/Plugin/SubversionInput.pm
index a8183e2ca..7879364ed 100644
--- a/src/lib/Hydra/Plugin/SubversionInput.pm
+++ b/src/lib/Hydra/Plugin/SubversionInput.pm
@@ -1,6 +1,7 @@
 package Hydra::Plugin::SubversionInput;
 
 use strict;
+use warnings;
 use parent 'Hydra::Plugin';
 use Digest::SHA qw(sha256_hex);
 use Hydra::Helper::Nix;
diff --git a/src/lib/Hydra/View/JSON.pm b/src/lib/Hydra/View/JSON.pm
index f2ab1fc82..d8924ac3e 100644
--- a/src/lib/Hydra/View/JSON.pm
+++ b/src/lib/Hydra/View/JSON.pm
@@ -1,3 +1,5 @@
 package Hydra::View::JSON;
+use strict;
+use warnings;
 use base qw(Catalyst::View::JSON);
 1;
diff --git a/src/lib/Hydra/View/NARInfo.pm b/src/lib/Hydra/View/NARInfo.pm
index 460bd706c..44db78b14 100644
--- a/src/lib/Hydra/View/NARInfo.pm
+++ b/src/lib/Hydra/View/NARInfo.pm
@@ -1,5 +1,7 @@
 package Hydra::View::NARInfo;
 
+use strict;
+use warnings;
 use File::Basename;
 use Hydra::Helper::CatalystUtils;
 use MIME::Base64;
@@ -7,7 +9,6 @@ use Nix::Manifest;
 use Nix::Store;
 use Nix::Utils;
 use base qw/Catalyst::View/;
-use strict;
 
 sub process {
     my ($self, $c) = @_;
diff --git a/src/lib/Hydra/View/NixClosure.pm b/src/lib/Hydra/View/NixClosure.pm
index d906dce35..c157af6b3 100644
--- a/src/lib/Hydra/View/NixClosure.pm
+++ b/src/lib/Hydra/View/NixClosure.pm
@@ -1,6 +1,7 @@
 package Hydra::View::NixClosure;
 
 use strict;
+use warnings;
 use base qw/Catalyst::View/;
 use IO::Pipe;
 
diff --git a/src/lib/Hydra/View/NixExprs.pm b/src/lib/Hydra/View/NixExprs.pm
index 194c51ece..eb68c8bca 100644
--- a/src/lib/Hydra/View/NixExprs.pm
+++ b/src/lib/Hydra/View/NixExprs.pm
@@ -1,6 +1,7 @@
 package Hydra::View::NixExprs;
 
 use strict;
+use warnings;
 use base qw/Catalyst::View/;
 use Hydra::Helper::Nix;
 use Hydra::Helper::Escape;
diff --git a/src/lib/Hydra/View/NixLog.pm b/src/lib/Hydra/View/NixLog.pm
index fb9e0e1f7..c2146bd4b 100644
--- a/src/lib/Hydra/View/NixLog.pm
+++ b/src/lib/Hydra/View/NixLog.pm
@@ -1,6 +1,7 @@
 package Hydra::View::NixLog;
 
 use strict;
+use warnings;
 use base qw/Catalyst::View/;
 use Hydra::Helper::CatalystUtils;
 
diff --git a/src/lib/Hydra/View/NixManifest.pm b/src/lib/Hydra/View/NixManifest.pm
index c64f8dab3..5b02ac060 100644
--- a/src/lib/Hydra/View/NixManifest.pm
+++ b/src/lib/Hydra/View/NixManifest.pm
@@ -1,6 +1,7 @@
 package Hydra::View::NixManifest;
 
 use strict;
+use warnings;
 use base qw/Catalyst::View/;
 use Hydra::Helper::Nix;
 use Nix::Store;
diff --git a/src/lib/Hydra/View/NixNAR.pm b/src/lib/Hydra/View/NixNAR.pm
index e1798275e..cae43275d 100644
--- a/src/lib/Hydra/View/NixNAR.pm
+++ b/src/lib/Hydra/View/NixNAR.pm
@@ -1,6 +1,7 @@
 package Hydra::View::NixNAR;
 
 use strict;
+use warnings;
 use base qw/Catalyst::View/;
 use Hydra::Helper::CatalystUtils;
 
diff --git a/src/lib/Hydra/View/TT.pm b/src/lib/Hydra/View/TT.pm
index f8b3fb647..c61762310 100644
--- a/src/lib/Hydra/View/TT.pm
+++ b/src/lib/Hydra/View/TT.pm
@@ -1,6 +1,7 @@
 package Hydra::View::TT;
 
 use strict;
+use warnings;
 use base 'Catalyst::View::TT';
 use Hydra::Helper::Nix;
 use Time::Seconds;
diff --git a/src/script/hydra-backfill-ids b/src/script/hydra-backfill-ids
index d9fc362ab..bb7508293 100755
--- a/src/script/hydra-backfill-ids
+++ b/src/script/hydra-backfill-ids
@@ -1,6 +1,7 @@
 #! /usr/bin/env perl
 
 use strict;
+use warnings;
 use utf8;
 use Hydra::Model::DB;
 
diff --git a/src/script/hydra-create-user b/src/script/hydra-create-user
index 0ed51bd85..d0178dc15 100755
--- a/src/script/hydra-create-user
+++ b/src/script/hydra-create-user
@@ -1,6 +1,7 @@
 #! /usr/bin/env perl
 
 use strict;
+use warnings;
 use Hydra::Schema;
 use Hydra::Helper::Nix;
 use Hydra::Model::DB;
diff --git a/src/script/hydra-dev-server b/src/script/hydra-dev-server
index 4f03ee390..ea502d89d 100755
--- a/src/script/hydra-dev-server
+++ b/src/script/hydra-dev-server
@@ -1,5 +1,8 @@
 #! /usr/bin/env perl
 
+use strict;
+use warnings;
+
 BEGIN {
     $ENV{CATALYST_SCRIPT_GEN} = 40;
 }
diff --git a/src/script/hydra-eval-jobset b/src/script/hydra-eval-jobset
index 77938c853..4d44a4b0a 100755
--- a/src/script/hydra-eval-jobset
+++ b/src/script/hydra-eval-jobset
@@ -1,6 +1,7 @@
 #! /usr/bin/env perl
 
 use strict;
+use warnings;
 use utf8;
 use Config::General;
 use Data::Dump qw(dump);
diff --git a/src/script/hydra-init b/src/script/hydra-init
index ac9d4afe2..6bc38470c 100755
--- a/src/script/hydra-init
+++ b/src/script/hydra-init
@@ -1,6 +1,7 @@
 #! /usr/bin/env perl
 
 use strict;
+use warnings;
 use Hydra::Schema;
 use Hydra::Helper::Nix;
 use Hydra::Model::DB;
diff --git a/src/script/hydra-notify b/src/script/hydra-notify
index 770f0620a..b877c7ee3 100755
--- a/src/script/hydra-notify
+++ b/src/script/hydra-notify
@@ -1,6 +1,7 @@
 #! /usr/bin/env perl
 
 use strict;
+use warnings;
 use utf8;
 use Getopt::Long;
 use HTTP::Server::PSGI;
diff --git a/src/script/hydra-s3-backup-collect-garbage b/src/script/hydra-s3-backup-collect-garbage
index ae6423f74..b83945181 100755
--- a/src/script/hydra-s3-backup-collect-garbage
+++ b/src/script/hydra-s3-backup-collect-garbage
@@ -1,6 +1,7 @@
 #! /usr/bin/env perl
 
 use strict;
+use warnings;
 use File::Basename;
 use Fcntl;
 use IO::File;
diff --git a/src/script/hydra-send-stats b/src/script/hydra-send-stats
index d07d94062..8b015ae77 100755
--- a/src/script/hydra-send-stats
+++ b/src/script/hydra-send-stats
@@ -1,6 +1,7 @@
 #! /usr/bin/env perl
 
 use strict;
+use warnings;
 use utf8;
 use Hydra::Helper::Nix;
 use Net::Statsd;
diff --git a/src/script/hydra-server b/src/script/hydra-server
index b8922e933..7f0deb2e4 100755
--- a/src/script/hydra-server
+++ b/src/script/hydra-server
@@ -1,5 +1,8 @@
 #! /usr/bin/env perl
 
+use strict;
+use warnings;
+
 BEGIN {
     $ENV{CATALYST_SCRIPT_GEN} = 40;
 }
diff --git a/src/script/hydra-update-gc-roots b/src/script/hydra-update-gc-roots
index de544e534..69578e293 100755
--- a/src/script/hydra-update-gc-roots
+++ b/src/script/hydra-update-gc-roots
@@ -1,6 +1,7 @@
 #! /usr/bin/env perl
 
 use strict;
+use warnings;
 use File::Path;
 use File::stat;
 use File::Basename;
diff --git a/src/sql/update-dbix.pl b/src/sql/update-dbix.pl
index a9a18f0e1..338e65b19 100644
--- a/src/sql/update-dbix.pl
+++ b/src/sql/update-dbix.pl
@@ -1,4 +1,6 @@
 use Cwd;
+use strict;
+use warnings;
 
 die "$0: dbi connection string required \n" if scalar @ARGV != 1;
 
diff --git a/t/Config/hydra-notify.t b/t/Config/hydra-notify.t
index 7fc8aa636..fb050324b 100644
--- a/t/Config/hydra-notify.t
+++ b/t/Config/hydra-notify.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init(hydra_config => q|
diff --git a/t/Config/include.t b/t/Config/include.t
index 3e57b3d4e..e161902ea 100644
--- a/t/Config/include.t
+++ b/t/Config/include.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init(
diff --git a/t/Config/statsd.t b/t/Config/statsd.t
index be0421274..c50e8d998 100644
--- a/t/Config/statsd.t
+++ b/t/Config/statsd.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init(hydra_config => q|
diff --git a/t/Controller/Build/evals.t b/t/Controller/Build/evals.t
index b12e00c61..6cbdeac90 100644
--- a/t/Controller/Build/evals.t
+++ b/t/Controller/Build/evals.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use Data::Dumper;
 my %ctx = test_init();
diff --git a/t/Controller/Jobset/channel.t b/t/Controller/Jobset/channel.t
index cb0a59528..322abc926 100644
--- a/t/Controller/Jobset/channel.t
+++ b/t/Controller/Jobset/channel.t
@@ -1,5 +1,6 @@
 use feature 'unicode_strings';
 use strict;
+use warnings;
 use Setup;
 use IO::Uncompress::Bunzip2 qw(bunzip2);
 use Archive::Tar;
diff --git a/t/Controller/Jobset/evals.t b/t/Controller/Jobset/evals.t
index ba53124a6..221efb655 100644
--- a/t/Controller/Jobset/evals.t
+++ b/t/Controller/Jobset/evals.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use Data::Dumper;
 my %ctx = test_init();
diff --git a/t/Controller/Jobset/http.t b/t/Controller/Jobset/http.t
index be2950f0b..6b5788c5b 100644
--- a/t/Controller/Jobset/http.t
+++ b/t/Controller/Jobset/http.t
@@ -1,5 +1,6 @@
 use feature 'unicode_strings';
 use strict;
+use warnings;
 use Setup;
 use JSON qw(decode_json encode_json);
 
diff --git a/t/Controller/Jobset/type-constraints.t b/t/Controller/Jobset/type-constraints.t
index 361c7c56d..88a8e2eea 100644
--- a/t/Controller/Jobset/type-constraints.t
+++ b/t/Controller/Jobset/type-constraints.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 my %ctx = test_init();
 
diff --git a/t/Controller/Root/evals.t b/t/Controller/Root/evals.t
index 895ef4246..2119725b4 100644
--- a/t/Controller/Root/evals.t
+++ b/t/Controller/Root/evals.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use Data::Dumper;
 my %ctx = test_init();
diff --git a/t/Controller/metrics.t b/t/Controller/metrics.t
index 8915104df..325efad9d 100644
--- a/t/Controller/metrics.t
+++ b/t/Controller/metrics.t
@@ -1,5 +1,6 @@
 use feature 'unicode_strings';
 use strict;
+use warnings;
 use Setup;
 use JSON qw(decode_json encode_json);
 
diff --git a/t/Controller/projects.t b/t/Controller/projects.t
index fb7df6ad5..068f566b5 100644
--- a/t/Controller/projects.t
+++ b/t/Controller/projects.t
@@ -1,5 +1,6 @@
 use feature 'unicode_strings';
 use strict;
+use warnings;
 use Setup;
 use JSON qw(decode_json encode_json);
 
diff --git a/t/Event.t b/t/Event.t
index a15b95ea4..908c24403 100644
--- a/t/Event.t
+++ b/t/Event.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Hydra::Event;
 
 use Test2::V0;
diff --git a/t/Event/BuildFinished.t b/t/Event/BuildFinished.t
index 8650f95c7..298b41624 100644
--- a/t/Event/BuildFinished.t
+++ b/t/Event/BuildFinished.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init();
diff --git a/t/Event/BuildStarted.t b/t/Event/BuildStarted.t
index 04a7df549..08433d8d2 100644
--- a/t/Event/BuildStarted.t
+++ b/t/Event/BuildStarted.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init();
diff --git a/t/Event/StepFinished.t b/t/Event/StepFinished.t
index a4bc3fb93..ae2d80814 100644
--- a/t/Event/StepFinished.t
+++ b/t/Event/StepFinished.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init();
diff --git a/t/Helper/escape.t b/t/Helper/escape.t
index 22dd4d47a..424c91982 100644
--- a/t/Helper/escape.t
+++ b/t/Helper/escape.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use Data::Dumper;
 use Test2::V0;
diff --git a/t/PostgresListener.t b/t/PostgresListener.t
index ac9ec502d..0249d498f 100644
--- a/t/PostgresListener.t
+++ b/t/PostgresListener.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init();
diff --git a/t/Schema/Users.t b/t/Schema/Users.t
index fd1a66e1e..b9d524195 100644
--- a/t/Schema/Users.t
+++ b/t/Schema/Users.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init();
diff --git a/t/api-test.t b/t/api-test.t
index ac1e4964a..3fee02642 100644
--- a/t/api-test.t
+++ b/t/api-test.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use JSON;
 use File::Copy;
diff --git a/t/build-products.t b/t/build-products.t
index 6987b9df9..3bc62d2e8 100644
--- a/t/build-products.t
+++ b/t/build-products.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init();
diff --git a/t/evaluate-basic.t b/t/evaluate-basic.t
index c12709b20..f4c6fde81 100644
--- a/t/evaluate-basic.t
+++ b/t/evaluate-basic.t
@@ -1,5 +1,6 @@
 use feature 'unicode_strings';
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init();
diff --git a/t/evaluate-dependent-jobsets.t b/t/evaluate-dependent-jobsets.t
index c5a4085dd..19c62891a 100644
--- a/t/evaluate-dependent-jobsets.t
+++ b/t/evaluate-dependent-jobsets.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init();
diff --git a/t/input-types/bzr-checkout.t b/t/input-types/bzr-checkout.t
index ee1f90a01..297c9bd63 100644
--- a/t/input-types/bzr-checkout.t
+++ b/t/input-types/bzr-checkout.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use TestScmInput;
 
diff --git a/t/input-types/bzr.t b/t/input-types/bzr.t
index 0cc0a23d9..364481035 100644
--- a/t/input-types/bzr.t
+++ b/t/input-types/bzr.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use TestScmInput;
 
diff --git a/t/input-types/darcs.t b/t/input-types/darcs.t
index aa95a8e65..7f8bd0444 100644
--- a/t/input-types/darcs.t
+++ b/t/input-types/darcs.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use TestScmInput;
 
diff --git a/t/input-types/deepgit.t b/t/input-types/deepgit.t
index 4d418148e..487d0a831 100644
--- a/t/input-types/deepgit.t
+++ b/t/input-types/deepgit.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use TestScmInput;
 
diff --git a/t/input-types/git-rev.t b/t/input-types/git-rev.t
index 866370d2e..a1749f3b7 100644
--- a/t/input-types/git-rev.t
+++ b/t/input-types/git-rev.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use TestScmInput;
 
diff --git a/t/input-types/git.t b/t/input-types/git.t
index 0804cc1ae..ed2ab43bb 100644
--- a/t/input-types/git.t
+++ b/t/input-types/git.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use TestScmInput;
 
diff --git a/t/input-types/hg.t b/t/input-types/hg.t
index 28552288e..83d9df872 100644
--- a/t/input-types/hg.t
+++ b/t/input-types/hg.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use TestScmInput;
 
diff --git a/t/input-types/svn-checkout.t b/t/input-types/svn-checkout.t
index 48f07f099..af4e65ced 100644
--- a/t/input-types/svn-checkout.t
+++ b/t/input-types/svn-checkout.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use TestScmInput;
 
diff --git a/t/input-types/svn.t b/t/input-types/svn.t
index c2eb8cec1..44f8d44e8 100644
--- a/t/input-types/svn.t
+++ b/t/input-types/svn.t
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use Setup;
 use TestScmInput;
 
diff --git a/t/lib/Setup.pm b/t/lib/Setup.pm
index 800c90eb7..751a81c20 100644
--- a/t/lib/Setup.pm
+++ b/t/lib/Setup.pm
@@ -1,6 +1,7 @@
 package Setup;
 
 use strict;
+use warnings;
 use Exporter;
 use Test::PostgreSQL;
 use File::Temp;
diff --git a/t/queue-runner/default-machine-file.t b/t/queue-runner/default-machine-file.t
index d57f1816f..e63482269 100644
--- a/t/queue-runner/default-machine-file.t
+++ b/t/queue-runner/default-machine-file.t
@@ -1,5 +1,6 @@
 use feature 'unicode_strings';
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init(
diff --git a/t/s3-backup-test.pl b/t/s3-backup-test.pl
index 372a9697e..3baa8b997 100644
--- a/t/s3-backup-test.pl
+++ b/t/s3-backup-test.pl
@@ -1,4 +1,5 @@
 use strict;
+use warnings;
 use File::Basename;
 use Hydra::Model::DB;
 use Hydra::Helper::Nix;
diff --git a/t/scripts/hydra-create-user.t b/t/scripts/hydra-create-user.t
index 3706d9111..abd0b1b8a 100644
--- a/t/scripts/hydra-create-user.t
+++ b/t/scripts/hydra-create-user.t
@@ -1,5 +1,6 @@
 use feature 'unicode_strings';
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init();
diff --git a/t/scripts/hydra-init.t b/t/scripts/hydra-init.t
index 517a14d7b..3fbcb6299 100644
--- a/t/scripts/hydra-init.t
+++ b/t/scripts/hydra-init.t
@@ -1,5 +1,6 @@
 use feature 'unicode_strings';
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init();
diff --git a/t/scripts/hydra-send-stats.t b/t/scripts/hydra-send-stats.t
index dde88cfe9..1c0e1eebf 100644
--- a/t/scripts/hydra-send-stats.t
+++ b/t/scripts/hydra-send-stats.t
@@ -1,5 +1,6 @@
 use feature 'unicode_strings';
 use strict;
+use warnings;
 use Setup;
 
 my %ctx = test_init();
diff --git a/t/setup-notifications-jobset.pl b/t/setup-notifications-jobset.pl
index 8eef78e68..709988456 100644
--- a/t/setup-notifications-jobset.pl
+++ b/t/setup-notifications-jobset.pl
@@ -1,3 +1,5 @@
+use strict;
+use warnings;
 use LWP::UserAgent;
 use JSON;