diff --git a/Formula/a/aamath.rb b/Formula/a/aamath.rb
index 201fced1355288..c89de3a15f9922 100644
--- a/Formula/a/aamath.rb
+++ b/Formula/a/aamath.rb
@@ -52,7 +52,7 @@ def install
   end
 
   test do
-    s = pipe_output(bin/"aamath", (prefix/"testcases").read)
+    s = pipe_output(bin/"aamath", (prefix/"testcases").read, 0)
     assert_match "f(x + h) = f(x) + h f'(x)", s
   end
 end
diff --git a/Formula/a/ack.rb b/Formula/a/ack.rb
index f3f0cfa1fc9f5b..b16fed4529b029 100644
--- a/Formula/a/ack.rb
+++ b/Formula/a/ack.rb
@@ -53,7 +53,6 @@ def install
   end
 
   test do
-    assert_equal "foo bar\n", pipe_output("#{bin}/ack --noenv --nocolor bar -",
-                                          "foo\nfoo bar\nbaz")
+    assert_equal "foo bar\n", pipe_output("#{bin}/ack --noenv --nocolor bar -", "foo\nfoo bar\nbaz", 0)
   end
 end
diff --git a/Formula/a/aescrypt.rb b/Formula/a/aescrypt.rb
index f82a65fd20b7d0..dfe8c1072296ea 100644
--- a/Formula/a/aescrypt.rb
+++ b/Formula/a/aescrypt.rb
@@ -44,8 +44,8 @@ def install
   test do
     (testpath/"key").write "kk=12345678901234567890123456789abc0"
     original_text = "hello"
-    cipher_text = pipe_output("#{bin}/aescrypt -k #{testpath}/key -s 128", original_text)
-    deciphered_text = pipe_output("#{bin}/aesget -k #{testpath}/key -s 128", cipher_text)
+    cipher_text = pipe_output("#{bin}/aescrypt -k #{testpath}/key -s 128", original_text, 0)
+    deciphered_text = pipe_output("#{bin}/aesget -k #{testpath}/key -s 128", cipher_text, 0)
     refute_equal original_text, cipher_text
     assert_equal original_text, deciphered_text
   end
diff --git a/Formula/a/aespipe.rb b/Formula/a/aespipe.rb
index ed11eca1546521..c494c9c5515d10 100644
--- a/Formula/a/aespipe.rb
+++ b/Formula/a/aespipe.rb
@@ -30,8 +30,8 @@ def install
   test do
     (testpath/"secret").write "thisismysecrethomebrewdonttellitplease"
     msg = "Hello this is Homebrew"
-    encrypted = pipe_output("#{bin}/aespipe -P secret", msg)
-    decrypted = pipe_output("#{bin}/aespipe -P secret -d", encrypted)
+    encrypted = pipe_output("#{bin}/aespipe -P secret", msg, 0)
+    decrypted = pipe_output("#{bin}/aespipe -P secret -d", encrypted, 0)
     assert_equal msg, decrypted.gsub(/\x0+$/, "")
   end
 end
diff --git a/Formula/a/afio.rb b/Formula/a/afio.rb
index 586e1a1b883feb..aa08da4768f8f2 100644
--- a/Formula/a/afio.rb
+++ b/Formula/a/afio.rb
@@ -40,7 +40,7 @@ def install
   test do
     path = testpath/"test"
     path.write "homebrew"
-    pipe_output("#{bin}/afio -o archive", "test\n")
+    pipe_output("#{bin}/afio -o archive", "test\n", 0)
 
     system bin/"afio", "-r", "archive"
     path.unlink
diff --git a/Formula/a/afuse.rb b/Formula/a/afuse.rb
index d447b81bb6c43d..ce9d4f0cce0f2a 100644
--- a/Formula/a/afuse.rb
+++ b/Formula/a/afuse.rb
@@ -23,6 +23,6 @@ def install
   end
 
   test do
-    assert_match "FUSE library version", pipe_output("#{bin}/afuse --version 2>&1")
+    assert_match "FUSE library version", shell_output("#{bin}/afuse --version 2>&1", 1)
   end
 end
diff --git a/Formula/a/age.rb b/Formula/a/age.rb
index eaf5f9c594cabf..a3a4cca6d54b66 100644
--- a/Formula/a/age.rb
+++ b/Formula/a/age.rb
@@ -28,7 +28,7 @@ def install
 
   test do
     system bin/"age-keygen", "-o", "key.txt"
-    pipe_output("#{bin}/age -e -i key.txt -o test.age", "test")
+    pipe_output("#{bin}/age -e -i key.txt -o test.age", "test", 0)
     assert_equal "test", shell_output("#{bin}/age -d -i key.txt test.age")
   end
 end
diff --git a/Formula/a/aha.rb b/Formula/a/aha.rb
index 4ec805026ffea5..93ad2c79d871e5 100644
--- a/Formula/a/aha.rb
+++ b/Formula/a/aha.rb
@@ -27,7 +27,7 @@ def install
   end
 
   test do
-    out = pipe_output(bin/"aha", "rainpill")
+    out = pipe_output(bin/"aha", "rainpill", 0)
     assert_match(/color:purple;">rain.*color:blue;">pill/, out)
   end
 end
diff --git a/Formula/a/aiven-client.rb b/Formula/a/aiven-client.rb
index fef3de46478bd7..adf6c2f0bd892f 100644
--- a/Formula/a/aiven-client.rb
+++ b/Formula/a/aiven-client.rb
@@ -46,6 +46,6 @@ def install
 
   test do
     assert_match "aiven-client", shell_output("#{bin}/avn --version")
-    assert_match "UserError: not authenticated", pipe_output("AIVEN_CONFIG_DIR=/tmp #{bin}/avn user info 2>&1")
+    assert_match "UserError: not authenticated", shell_output("AIVEN_CONFIG_DIR=/tmp #{bin}/avn user info 2>&1", 1)
   end
 end
diff --git a/Formula/a/aldo.rb b/Formula/a/aldo.rb
index 96d7f21a1c8882..ae3c77f56384e3 100644
--- a/Formula/a/aldo.rb
+++ b/Formula/a/aldo.rb
@@ -44,6 +44,6 @@ def install
   end
 
   test do
-    assert_match "Aldo #{version} Main Menu", pipe_output(bin/"aldo", "6")
+    assert_match "Aldo #{version} Main Menu", pipe_output(bin/"aldo", "6", 0)
   end
 end
diff --git a/Formula/a/align.rb b/Formula/a/align.rb
index 1aef5f4ffd9fa2..261231881be1f1 100644
--- a/Formula/a/align.rb
+++ b/Formula/a/align.rb
@@ -22,6 +22,6 @@ def install
   end
 
   test do
-    assert_equal " 1  1\n12 12\n", pipe_output(bin/"align", "1 1\n12 12\n")
+    assert_equal " 1  1\n12 12\n", pipe_output(bin/"align", "1 1\n12 12\n", 0)
   end
 end
diff --git a/Formula/a/analog.rb b/Formula/a/analog.rb
index 6c98831d9435f9..56b590f840bdbc 100644
--- a/Formula/a/analog.rb
+++ b/Formula/a/analog.rb
@@ -46,7 +46,7 @@ def install
   end
 
   test do
-    output = pipe_output("#{bin}/analog #{pkgshare}/examples/logfile.log")
+    output = shell_output("#{bin}/analog #{pkgshare}/examples/logfile.log")
     assert_match "(United Kingdom)", output
   end
 end