diff --git a/docker/apl/run.sh b/docker/apl/run.sh
index 581f1e7..ca97857 100644
--- a/docker/apl/run.sh
+++ b/docker/apl/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.apl
-apl --OFF -s -f program.apl
+apl --OFF -s -f program.apl || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/bash/run.sh b/docker/bash/run.sh
index 16bffa5..f2b44e4 100644
--- a/docker/bash/run.sh
+++ b/docker/bash/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.sh
-bash program.sh
+bash program.sh || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/brainfuck/run.sh b/docker/brainfuck/run.sh
index 46b195d..b9bdc7a 100644
--- a/docker/brainfuck/run.sh
+++ b/docker/brainfuck/run.sh
@@ -1 +1 @@
-printf %s "$1" | bf
+printf %s "$1" | bf || true
diff --git a/docker/c/run.sh b/docker/c/run.sh
index ae6b9d3..bffd691 100644
--- a/docker/c/run.sh
+++ b/docker/c/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.c
-gcc program.c -o program && ./program
+gcc program.c -o program && ./program || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/clojure/run.sh b/docker/clojure/run.sh
index 4b2f897..43196d7 100644
--- a/docker/clojure/run.sh
+++ b/docker/clojure/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.clj
-clojure program.clj
+clojure program.clj || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/cpp/run.sh b/docker/cpp/run.sh
index b9236b9..b708d1f 100644
--- a/docker/cpp/run.sh
+++ b/docker/cpp/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.cpp
-g++ program.cpp -o program && ./program
+g++ program.cpp -o program && ./program || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/csharp/run.sh b/docker/csharp/run.sh
index d050032..934f897 100644
--- a/docker/csharp/run.sh
+++ b/docker/csharp/run.sh
@@ -4,7 +4,7 @@ else
     mkdir "$CODEDIR" && cd "$CODEDIR"
 
     printf %s "$1" > program.cs
-    csc program.cs >/dev/null && mono program.exe
+    csc program.cs >/dev/null && mono program.exe || true
 
     cd .. && rm -rf "$CODEDIR"
 fi
diff --git a/docker/elixir/run.sh b/docker/elixir/run.sh
index 71a36e9..50d1768 100644
--- a/docker/elixir/run.sh
+++ b/docker/elixir/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.exs
-elixir program.exs
+elixir program.exs || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/fsharp/run.sh b/docker/fsharp/run.sh
index 79a7703..fe0fa14 100644
--- a/docker/fsharp/run.sh
+++ b/docker/fsharp/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.fs
-fsharpc --optimize- program.fs >/dev/null && mono program.exe
+fsharpc --optimize- program.fs >/dev/null && mono program.exe || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/go/run.sh b/docker/go/run.sh
index 642b42a..a6ee9a5 100644
--- a/docker/go/run.sh
+++ b/docker/go/run.sh
@@ -2,6 +2,6 @@ mkdir "$CODEDIR" && cd "$CODEDIR"
 
 export GOCACHE=/tmp/"$CODEDIR"/cache
 printf %s "$1" > program.go
-go run program.go
+go run program.go || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/haskell/run.sh b/docker/haskell/run.sh
index 62c45b4..1017cb1 100644
--- a/docker/haskell/run.sh
+++ b/docker/haskell/run.sh
@@ -1,10 +1,10 @@
 if [ "$EVAL_EXPR" = "true" ]; then
-    ghc -e "$1"
+    ghc -e "$1" || true
 else
     mkdir "$CODEDIR" && cd "$CODEDIR"
 
     printf %s "$1" > program.hs
-    ghc -e main program.hs
+    ghc -e main program.hs || true
 
     cd .. && rm -rf "$CODEDIR"
 fi
diff --git a/docker/java/run.sh b/docker/java/run.sh
index 565e6f4..5f54b23 100644
--- a/docker/java/run.sh
+++ b/docker/java/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > Main.java
-javac Main.java && java Main
+javac Main.java && java Main || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/javascript/run.sh b/docker/javascript/run.sh
index d6a9e60..c82d76d 100644
--- a/docker/javascript/run.sh
+++ b/docker/javascript/run.sh
@@ -1,5 +1,5 @@
 if [ "$EVAL_HARMONY" = "true" ]; then
-    printf %s "$1" | node --harmony -p
+    printf %s "$1" | node --harmony -p || true
 else
-    printf %s "$1" | node -p
+    printf %s "$1" | node -p || true
 fi
diff --git a/docker/julia/run.sh b/docker/julia/run.sh
index c299f35..24de6e6 100644
--- a/docker/julia/run.sh
+++ b/docker/julia/run.sh
@@ -1,5 +1,5 @@
 if [ "$EVAL_EXPR" = "true" ]; then
-    printf %s "$1" | julia -E
+    printf %s "$1" | julia -E || true
 else
-    printf %s "$1" | julia -e
+    printf %s "$1" | julia -e || true
 fi
diff --git a/docker/lua/run.sh b/docker/lua/run.sh
index 6ac81b0..eea2f9f 100644
--- a/docker/lua/run.sh
+++ b/docker/lua/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.lua
-lua5.3 program.lua
+lua5.3 program.lua || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/ocaml/run.sh b/docker/ocaml/run.sh
index caccd04..2c56ae7 100644
--- a/docker/ocaml/run.sh
+++ b/docker/ocaml/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.ml
-ocamlopt -cclib --static -o program program.ml && ./program
+ocamlopt -cclib --static -o program program.ml && ./program || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/pascal/run.sh b/docker/pascal/run.sh
index 2d23489..26a3896 100644
--- a/docker/pascal/run.sh
+++ b/docker/pascal/run.sh
@@ -6,10 +6,9 @@ printf %s "$1" > program.pas
 res="$(fpc program.pas 2>&1)"
 
 if [ $? -eq 0 ]; then
-  ./program
+    ./program || true
 else
-  printf %s "$res"
-  exit 1
+    printf %s "$res"
 fi
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/perl/run.sh b/docker/perl/run.sh
index 7778c41..12dda3e 100644
--- a/docker/perl/run.sh
+++ b/docker/perl/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.pl
-perl program.pl
+perl program.pl || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/php/run.sh b/docker/php/run.sh
index 082f83b..3e5631f 100644
--- a/docker/php/run.sh
+++ b/docker/php/run.sh
@@ -1 +1 @@
-printf %s "$1" | php -r
+printf %s "$1" | php -r || true
diff --git a/docker/prolog/run.sh b/docker/prolog/run.sh
index 5a37620..7e6ad7a 100644
--- a/docker/prolog/run.sh
+++ b/docker/prolog/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.pl
-swipl --quiet program.pl
+swipl --quiet program.pl || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/python2/run.sh b/docker/python2/run.sh
index 7496968..3f782bb 100644
--- a/docker/python2/run.sh
+++ b/docker/python2/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.py
-python program.py
+python program.py || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/python3/run.sh b/docker/python3/run.sh
index 7496968..3f782bb 100644
--- a/docker/python3/run.sh
+++ b/docker/python3/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.py
-python program.py
+python program.py || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/racket/run.sh b/docker/racket/run.sh
index 60dd11d..e371054 100644
--- a/docker/racket/run.sh
+++ b/docker/racket/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.rkt
-racket program.rkt
+racket program.rkt || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/ruby/run.sh b/docker/ruby/run.sh
index 3146029..8090145 100644
--- a/docker/ruby/run.sh
+++ b/docker/ruby/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.rb
-ruby program.rb
+ruby program.rb || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/docker/rust/run.sh b/docker/rust/run.sh
index 8890f12..5b8eba6 100644
--- a/docker/rust/run.sh
+++ b/docker/rust/run.sh
@@ -1,6 +1,6 @@
 mkdir "$CODEDIR" && cd "$CODEDIR"
 
 printf %s "$1" > program.rs
-rustc -C opt-level=0 --color never program.rs && ./program
+rustc -C opt-level=0 --color never program.rs && ./program || true
 
 cd .. && rm -rf "$CODEDIR"
diff --git a/src/listeners/messageInvalid.js b/src/listeners/messageInvalid.js
index c2ad835..8fe32e1 100644
--- a/src/listeners/messageInvalid.js
+++ b/src/listeners/messageInvalid.js
@@ -29,7 +29,13 @@ class MessageInvalidListener extends Listener {
         let errored = false;
         let result;
         try {
-            result = await this.client.languageHandler.evalCode(parse);
+            const { stdout, stderr } = await this.client.languageHandler.evalCode(parse);
+            if (stderr) {
+                errored = true;
+                result = stderr;
+            } else {
+                result = stdout;
+            }
         } catch (e) {
             errored = true;
             result = e.message;
diff --git a/src/struct/LanguageHandler.js b/src/struct/LanguageHandler.js
index 06c2207..f20df39 100644
--- a/src/struct/LanguageHandler.js
+++ b/src/struct/LanguageHandler.js
@@ -155,14 +155,15 @@ class LanguageHandler extends AkairoHandler {
                 }, timeout);
             }
 
-            let data = '';
+            let stdout = '';
+            let stderr = '';
             let error;
             proc.stdout.on('data', chunk => {
-                data += chunk;
+                stdout += chunk;
             });
 
             proc.stderr.on('data', chunk => {
-                data += chunk;
+                stderr += chunk;
             });
 
             proc.on('error', e => {
@@ -174,12 +175,12 @@ class LanguageHandler extends AkairoHandler {
                     handled = true;
                     if (status !== 0 || error) {
                         if (!error) {
-                            error = new Error(data || 'Something went wrong');
+                            error = new Error(stderr || 'Something went wrong');
                         }
 
                         reject(error);
                     } else {
-                        resolve(data);
+                        resolve({ stdout, stderr });
                     }
                 }
             });