diff --git a/t/00_diag.t b/t/00_diag.t
index 95a9745..02edd81 100644
--- a/t/00_diag.t
+++ b/t/00_diag.t
@@ -1,5 +1,6 @@
 use strict;
 use warnings;
+use Config;
 use Test::More tests => 1;
 BEGIN {
   my @modules;
@@ -18,6 +19,13 @@ BEGIN {
   eval qq{ require $_ } for @modules;
 };
 
+sub spacer ()
+{
+  diag '';
+  diag '';
+  diag '';
+}
+
 pass 'okay';
 
 my @modules;
@@ -33,9 +41,30 @@ my $max = 1;
 $max = $_ > $max ? $_ : $max for map { length $_ } @modules;
 our $format = "%-${max}s %s"; 
 
-diag '';
-diag '';
-diag '';
+spacer;
+
+my @keys = sort grep /(MOJO|PERL|\A(LC|HARNESS)_|\A(SHELL|LANG)\Z)/i, keys %ENV;
+
+if(@keys > 0)
+{
+  diag "$_=$ENV{$_}" for @keys;
+  
+  if($ENV{PERL5LIB})
+  {
+    spacer;
+    diag "PERL5LIB path";
+    diag $_ for split $Config{path_sep}, $ENV{PERL5LIB};
+    
+  }
+  elsif($ENV{PERLLIB})
+  {
+    spacer;
+    diag "PERLLIB path";
+    diag $_ for split $Config{path_sep}, $ENV{PERLLIB};
+  }
+  
+  spacer;
+}
 
 diag sprintf $format, 'perl ', $^V;
 
@@ -56,6 +85,5 @@ foreach my $module (@modules)
   }
 }
 
-diag '';
-diag '';
-diag '';
+spacer;
+
diff --git a/t/00_diag.txt b/t/00_diag.txt
index aa16458..7254e8a 100644
--- a/t/00_diag.txt
+++ b/t/00_diag.txt
@@ -10,7 +10,6 @@ Mojolicious::Lite
 POSIX
 Template
 Template::Provider
-Test::CPAN::Meta
 Test::Mojo
 Test::More
 lib
diff --git a/xt/release/build_environment.t b/xt/release/build_environment.t
index 82bb61c..bdc44d8 100644
--- a/xt/release/build_environment.t
+++ b/xt/release/build_environment.t
@@ -5,5 +5,5 @@ use Test::More tests => 1;
 SKIP: {
   eval q{ use Dist::Zilla::PluginBundle::Author::Plicease };
   skip '[@Plicease] is not installed', 1 if $@;
-  ok $Dist::Zilla::PluginBundle::Author::Plicease::VERSION >= 0.7, '[@Plicease] >= 0.7';
+  ok $Dist::Zilla::PluginBundle::Author::Plicease::VERSION >= 1.45, '[@Plicease] >= 1.45';
 }
diff --git a/xt/release/pod_coverage.t b/xt/release/pod_coverage.t
index 7095883..af899c0 100644
--- a/xt/release/pod_coverage.t
+++ b/xt/release/pod_coverage.t
@@ -20,6 +20,8 @@ my $config;
 $config = LoadFile($config_filename)
   if -r $config_filename;
 
+plan skip_all => 'disabled' if $config->{pod_coverage}->{skip};
+
 chdir(File::Spec->catdir($FindBin::Bin, File::Spec->updir, File::Spec->updir));
 
 my @private_classes;
diff --git a/xt/release/pod_spelling_system.t b/xt/release/pod_spelling_system.t
index eac020c..3773353 100644
--- a/xt/release/pod_spelling_system.t
+++ b/xt/release/pod_spelling_system.t
@@ -20,6 +20,8 @@ my $config;
 $config = LoadFile($config_filename)
   if -r $config_filename;
 
+plan skip_all => 'disabled' if $config->{pod_spelling_system}->{skip};
+
 chdir(File::Spec->catdir($FindBin::Bin, File::Spec->updir, File::Spec->updir));
 
 add_stopwords(@{ $config->{pod_spelling_system}->{stopwords} });
@@ -29,6 +31,7 @@ all_pod_files_spelling_ok;
 __DATA__
 Plicease
 stdout
+stderr
 stdin
 subref
 loopback
@@ -37,3 +40,62 @@ os
 Ollis
 Mojolicious
 plicease
+CPAN
+reinstall
+TODO
+filename
+filenames
+login
+callback
+callbacks
+standalone
+VMS
+hostname
+hostnames
+TCP
+UDP
+IP
+API
+MSWin32
+OpenBSD
+FreeBSD
+NetBSD
+unencrypted
+WebSocket
+WebSockets
+timestamp
+timestamps
+poney
+BackPAN
+portably
+RedHat
+AIX
+BSD
+XS
+FFI
+perlish
+optimizations
+subdirectory
+RESTful
+SQLite
+JavaScript
+dir
+plugins
+munge
+jQuery
+namespace
+PDF
+PDFs
+usernames
+DBI
+pluggable
+APIs
+SSL
+JSON
+YAML
+uncommented
+Solaris
+OpenVMS
+URI
+URL
+CGI
diff --git a/xt/release/unused_vars.t b/xt/release/unused_vars.t
new file mode 100644
index 0000000..b492ce1
--- /dev/null
+++ b/xt/release/unused_vars.t
@@ -0,0 +1,63 @@
+use strict;
+use warnings;
+use Test::More;
+BEGIN { plan skip_all => 'test requires Test::Vars ' unless eval q{ use Test::Vars; 1 } }
+BEGIN { plan skip_all => 'test requires Path::Class' unless eval q{ use Path::Class::Dir; 1 } }
+BEGIN { plan skip_all => 'test requires YAML' unless eval q{ use YAML; 1 } }
+
+my $dir = Path::Class::Dir->new(__FILE__)->parent->parent->parent;
+my $config = YAML::LoadFile($dir->file(qw( xt release release.yml )));
+
+plan skip_all => 'disabled' if $config->{unused_vars}->{skip};
+
+my @modules;
+recurse($dir->subdir('lib'));
+
+sub recurse
+{
+  my $dir = shift;
+  foreach my $child ($dir->children)
+  {
+    if($child->is_dir)
+    {
+      recurse($child);
+    }
+    else
+    {
+      push @modules, $child if $child->basename =~ /\.pm$/;
+    }
+  }
+}
+
+plan tests => scalar @modules;
+
+my %global = (
+  ignore_vars => { map { $_ => 1 } @{ $config->{unused_vars}->{global}->{ignore_vars} } },
+);
+if(defined $config->{unused_vars}->{global}->{ignore_if})
+{
+  $global{ignore_if} = eval $config->{unused_vars}->{global}->{ignore_if};
+  die $@ if $@;
+}
+
+foreach my $file (@modules)
+{
+  my @mod = $file->components;
+  shift @mod; # get rid of '.';
+  shift @mod; # get rid of 'lib';
+  $mod[-1] =~ s/\.pm$//;
+  my $mod = join '::', @mod;
+  
+  my %local = %global;
+  foreach my $ignore (@{ $config->{unused_vars}->{module}->{$mod}->{ignore_vars} || []})
+  {
+    $local{ignore_vars}->{$ignore} = 1;
+  }
+  if(defined $config->{unused_vars}->{module}->{$mod}->{ignore_if})
+  {
+    $local{ignore_if} = eval $config->{unused_vars}->{module}->{$mod}->{ignore_if};
+    die $@ if $@;
+  }
+  
+  vars_ok($file, %local);
+}