diff --git a/test/bug.cal.t b/test/bug.cal.t
index 8401a762b..3b8fb7537 100755
--- a/test/bug.cal.t
+++ b/test/bug.cal.t
@@ -42,65 +42,65 @@ if (open my $fh, '>', 'cal.rc')
 # Bug: The 'cal' command can fail when provided with challenging arguments.
 
 # Should not fail (because they are correct):
-my $output = qx{../src/task rc:cal.rc cal 2>&1};
+my $output = qx{../src/task rc:cal.rc cal 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal');
 
 # y due 2010 donkey 8
-$output = qx{../src/task rc:cal.rc cal y 2>&1};
+$output = qx{../src/task rc:cal.rc cal y 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal y');
-$output = qx{../src/task rc:cal.rc cal 8 2>&1};
+$output = qx{../src/task rc:cal.rc cal 8 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal 8');
-$output = qx{../src/task rc:cal.rc cal due 2>&1};
+$output = qx{../src/task rc:cal.rc cal due 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal due');
-$output = qx{../src/task rc:cal.rc cal 2010 2>&1};
+$output = qx{../src/task rc:cal.rc cal 2010 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal 2010');
-$output = qx{../src/task rc:cal.rc cal donkey 2>&1};
+$output = qx{../src/task rc:cal.rc cal donkey 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal donkey');
 
 # y due 2010 donkey 8
-$output = qx{../src/task rc:cal.rc cal y due 2>&1};
+$output = qx{../src/task rc:cal.rc cal y due 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal y due');
-$output = qx{../src/task rc:cal.rc cal y 8 2>&1};
+$output = qx{../src/task rc:cal.rc cal y 8 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal y 8');
-$output = qx{../src/task rc:cal.rc cal y 2010 2>&1};
+$output = qx{../src/task rc:cal.rc cal y 2010 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal y 2010');
-$output = qx{../src/task rc:cal.rc cal y donkey 2>&1};
+$output = qx{../src/task rc:cal.rc cal y donkey 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal y donkey');
-$output = qx{../src/task rc:cal.rc cal 8 due 2>&1};
+$output = qx{../src/task rc:cal.rc cal 8 due 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal 8 due');
-$output = qx{../src/task rc:cal.rc cal 8 2010 2>&1};
+$output = qx{../src/task rc:cal.rc cal 8 2010 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal 8 2010');
-$output = qx{../src/task rc:cal.rc cal 8 donkey 2>&1};
+$output = qx{../src/task rc:cal.rc cal 8 donkey 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal 8 donkey');
-$output = qx{../src/task rc:cal.rc cal due 2010 2>&1};
+$output = qx{../src/task rc:cal.rc cal due 2010 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal due 2010');
-$output = qx{../src/task rc:cal.rc cal due donkey 2>&1};
+$output = qx{../src/task rc:cal.rc cal due donkey 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal due donkey');
-$output = qx{../src/task rc:cal.rc cal 2010 donkey 2>&1};
+$output = qx{../src/task rc:cal.rc cal 2010 donkey 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal 2010 donkey');
 
 # y 8 due 2010 donkey
-$output = qx{../src/task rc:cal.rc cal y 8 due 2>&1};
+$output = qx{../src/task rc:cal.rc cal y 8 due 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal y 8 due');
-$output = qx{../src/task rc:cal.rc cal y 8 2010 2>&1};
+$output = qx{../src/task rc:cal.rc cal y 8 2010 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal y 8 2010');
-$output = qx{../src/task rc:cal.rc cal y 8 donkey 2>&1};
+$output = qx{../src/task rc:cal.rc cal y 8 donkey 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal y 8 donkey');
-$output = qx{../src/task rc:cal.rc cal y due 2010 2>&1};
+$output = qx{../src/task rc:cal.rc cal y due 2010 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal y due 2010');
-$output = qx{../src/task rc:cal.rc cal y due donkey 2>&1};
+$output = qx{../src/task rc:cal.rc cal y due donkey 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal y due donkey');
-$output = qx{../src/task rc:cal.rc cal y 2010 donkey 2>&1};
+$output = qx{../src/task rc:cal.rc cal y 2010 donkey 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal y 2010 donkey');
-$output = qx{../src/task rc:cal.rc cal 8 due 2010 2>&1};
+$output = qx{../src/task rc:cal.rc cal 8 due 2010 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal 8 due 2010');
-$output = qx{../src/task rc:cal.rc cal 8 due donkey 2>&1};
+$output = qx{../src/task rc:cal.rc cal 8 due donkey 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal 8 due donkey');
-$output = qx{../src/task rc:cal.rc cal 8 2010 donkey 2>&1};
+$output = qx{../src/task rc:cal.rc cal 8 2010 donkey 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal 8 2010 donkey');
-$output = qx{../src/task rc:cal.rc cal due 2010 8 2>&1};
+$output = qx{../src/task rc:cal.rc cal due 2010 8 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal due 2010 8');
-$output = qx{../src/task rc:cal.rc cal due 2010 donkey 2>&1};
+$output = qx{../src/task rc:cal.rc cal due 2010 donkey 2>&1 >/dev/null};
 unlike ($output, qr/(?:Assertion failed|Could note recognize|not a valid)/, 'cal due 2010 donkey');
 
 # Cleanup.
diff --git a/test/custom.columns.t b/test/custom.columns.t
index f1ed444ed..b5b996f2f 100755
--- a/test/custom.columns.t
+++ b/test/custom.columns.t
@@ -43,7 +43,7 @@ if (open my $fh, '>', 'custom.rc')
 }
 
 # Generate the usage screen, and locate the custom report on it.
-my $output = qx{../src/task rc:custom.rc foo 2>&1};
+my $output = qx{../src/task rc:custom.rc foo 2>&1 >/dev/null};
 like ($output, qr/Unrecognized column name 'foo'\.\n/, 'custom report spotted invalid column');
 
 # Cleanup.
diff --git a/test/custom.priority_long.t b/test/custom.priority_long.t
index 54f2d7aa0..d93e3e333 100755
--- a/test/custom.priority_long.t
+++ b/test/custom.priority_long.t
@@ -47,7 +47,7 @@ qx{../src/task rc:pri.rc add one   pri:H};
 qx{../src/task rc:pri.rc add two   pri:M};
 qx{../src/task rc:pri.rc add three pri:L};
 
-my $output = qx{../src/task rc:pri.rc foo 2>&1};
+my $output = qx{../src/task rc:pri.rc foo};
 like ($output,   qr/ID.+Pri/,    'priority.long indicator heading');
 like ($output,   qr/1\s+High/,   'priority.long High');
 like ($output,   qr/2\s+Medium/, 'priority.long Medium');
diff --git a/test/custom.recur_ind.t b/test/custom.recur_ind.t
index fb8bb6905..72095cfa9 100755
--- a/test/custom.recur_ind.t
+++ b/test/custom.recur_ind.t
@@ -45,12 +45,12 @@ if (open my $fh, '>', 'custom.rc')
 # Add a recurring and non-recurring task, look for the indicator.
 qx{../src/task rc:custom.rc add foo due:tomorrow recur:weekly};
 qx{../src/task rc:custom.rc add bar};
-my $output = qx{../src/task rc:custom.rc foo 2>&1};
+my $output = qx{../src/task rc:custom.rc foo};
 like ($output,   qr/ID.+R/, 'Recurrence indicator heading');
 like ($output,   qr/3\s+R/, 'Recurrence indicator t1');
 unlike ($output, qr/2\s+R/, 'No recurrence indicator t2');
 
-$output = qx{../src/task rc:custom.rc foo rc.recurrence.indicator=RE 2>&1};
+$output = qx{../src/task rc:custom.rc foo rc.recurrence.indicator=RE};
 like ($output,   qr/3\s+RE/, 'Custom recurrence indicator t1');
 unlike ($output, qr/2\s+RE/, 'No custom recurrence indicator t2');
 
diff --git a/test/custom.tag_ind.t b/test/custom.tag_ind.t
index 50535e849..dd8ee88ee 100755
--- a/test/custom.tag_ind.t
+++ b/test/custom.tag_ind.t
@@ -45,12 +45,12 @@ if (open my $fh, '>', 'custom.rc')
 # Generate the usage screen, and locate the custom report on it.
 qx{../src/task rc:custom.rc add foo +tag};
 qx{../src/task rc:custom.rc add bar};
-my $output = qx{../src/task rc:custom.rc foo 2>&1};
+my $output = qx{../src/task rc:custom.rc foo};
 like ($output,   qr/ID.+T/,  'Tag indicator heading');
 like ($output,   qr/1\s+\+/, 'Tag indicator t1');
 unlike ($output, qr/2\s+\+/, 'No tag indicator t2');
 
-$output = qx{../src/task rc:custom.rc foo rc.tag.indicator=TAG 2>&1};
+$output = qx{../src/task rc:custom.rc foo rc.tag.indicator=TAG};
 like ($output,   qr/1\s+TAG/, 'Custom ag indicator t1');
 unlike ($output, qr/2\s+TAG/, 'No custom tag indicator t2');