diff --git a/.gitignore b/.gitignore
index 717f5fb2a..5898650a0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,4 +9,3 @@ target/
 build/
 node_modules/
 **/npm/bin/
-integration/*.log
diff --git a/bin/test/test_prerequisites.ps1 b/bin/test/test_prerequisites.ps1
index 6e9c670d0..00efba6dd 100644
--- a/bin/test/test_prerequisites.ps1
+++ b/bin/test/test_prerequisites.ps1
@@ -12,28 +12,29 @@ if ($LASTEXITCODE) { Throw }
 
 # start mock servers
 cd $project_root_path\integration
+New-Item -ItemType Directory -Force -Path build
 
-Start-Process powershell -WindowStyle Hidden { mitmdump --listen-port 8888 --modify-header "/From-Proxy/Hello" 2>&1 > mitmdump.log }
+Start-Process powershell -WindowStyle Hidden { mitmdump --listen-port 8888 --modify-header "/From-Proxy/Hello" 2>&1 > build\mitmdump.log }
 if ($LASTEXITCODE) { Throw }
 sleep 5
 if (netstat -ano | Select-String LISTENING | Select-string 0.0.0.0:8888) {powershell write-host -foregroundcolor Green "mitmdump is up"} else {powershell write-host -foregroundcolor Red "mitmdump is down" ; exit 1}
 
-Start-Process powershell -WindowStyle Hidden { python server.py 2>&1 > server.log }
+Start-Process powershell -WindowStyle Hidden { python server.py 2>&1 > build\server.log }
 if ($LASTEXITCODE) { Throw }
 sleep 5
 if (netstat -ano | Select-String LISTENING | Select-string 127.0.0.1:8000) {powershell write-host -foregroundcolor Green "server is up"} else {powershell write-host -foregroundcolor Red "server is down" ; exit 1}
 
-Start-Process powershell -WindowStyle Hidden { python ssl/server.py 8001 ssl/server/cert.selfsigned.pem false 2>&1 > server-ssl-selfsigned.log }
+Start-Process powershell -WindowStyle Hidden { python ssl/server.py 8001 ssl/server/cert.selfsigned.pem false 2>&1 > build\server-ssl-selfsigned.log }
 if ($LASTEXITCODE) { Throw }
 sleep 5
 if (netstat -ano | Select-String LISTENING | Select-string 127.0.0.1:8001) {powershell write-host -foregroundcolor Green "server-ssl-selfsigned up"} else {powershell write-host -foregroundcolor Red "server-ssl-selfsigned is down" ; exit 1}
 
-Start-Process powershell -WindowStyle Hidden { python ssl/server.py 8002 ssl/server/cert.pem false 2>&1 > server-ssl-signedbyca.log }
+Start-Process powershell -WindowStyle Hidden { python ssl/server.py 8002 ssl/server/cert.pem false 2>&1 > build\server-ssl-signedbyca.log }
 if ($LASTEXITCODE) { Throw }
 sleep 5
 if (netstat -ano | Select-String LISTENING | Select-string 127.0.0.1:8002) {powershell write-host -foregroundcolor Green "server-ssl-signedbyca up"} else {powershell write-host -foregroundcolor Red "server-ssl-signedbyca is down" ; exit 1}
 
-Start-Process powershell -WindowStyle Hidden { python ssl/server.py 8003 ssl/server/cert.pem true 2>&1 > server-ssl-client-authent.log }
+Start-Process powershell -WindowStyle Hidden { python ssl/server.py 8003 ssl/server/cert.pem true 2>&1 > build\server-ssl-client-authent.log }
 if ($LASTEXITCODE) { Throw }
 sleep 5
 if (netstat -ano | Select-String LISTENING | Select-string 127.0.0.1:8003) {powershell write-host -foregroundcolor Green "server-ssl-client-authent up"} else {powershell write-host -foregroundcolor Red "server-ssl-client-authent is down" ; exit 1}
diff --git a/bin/test/test_prerequisites.sh b/bin/test/test_prerequisites.sh
index 14e4b280d..9b5b1711a 100755
--- a/bin/test/test_prerequisites.sh
+++ b/bin/test/test_prerequisites.sh
@@ -32,24 +32,25 @@ pip3 install --requirement bin/requirements-frozen.txt
 
 echo "----- start servers -----"
 cd integration
+mkdir -p build
 
 echo -e "\n------------------ Starting server.py"
-(python3 server.py >server.log 2>&1 || true) &
+(python3 server.py > build/server.log 2>&1 || true) &
 check_listen_port "server.py" 8000
 
 echo -e "\n------------------ Starting ssl/server.py (Self-signed certificate)"
-(python3 ssl/server.py 8001 ssl/server/cert.selfsigned.pem false > server-ssl-selfsigned.log 2>&1 || true) &
+(python3 ssl/server.py 8001 ssl/server/cert.selfsigned.pem false > build/server-ssl-selfsigned.log 2>&1 || true) &
 check_listen_port "ssl/server.py" 8001
 
 echo -e "\n------------------ Starting ssl/server.py (Signed by CA)"
-(python3 ssl/server.py 8002 ssl/server/cert.pem false > server-ssl-signedbyca.log 2>&1 || true) &
+(python3 ssl/server.py 8002 ssl/server/cert.pem false > build/server-ssl-signedbyca.log 2>&1 || true) &
 check_listen_port "ssl/server.py" 8002
 
 echo -e "\n------------------ Starting ssl/server.py (Self-signed certificate + Client certificate authentication)"
-(python3 ssl/server.py 8003 ssl/server/cert.selfsigned.pem true > server-ssl-client-authent.log 2>&1 || true) &
+(python3 ssl/server.py 8003 ssl/server/cert.selfsigned.pem true > build/server-ssl-client-authent.log 2>&1 || true) &
 check_listen_port "ssl/server.py" 8003
 
 echo -e "\n------------------ Starting mitmdump"
-(mitmdump --listen-host 127.0.0.1 --listen-port 8888 --modify-header "/From-Proxy/Hello" >mitmproxy.log 2>&1 ||true) &
+(mitmdump --listen-host 127.0.0.1 --listen-port 8888 --modify-header "/From-Proxy/Hello" > build/mitmproxy.log 2>&1 ||true) &
 check_listen_port "mitmdump" 8888