VS Code not printing warnings

I'm trying to set up VS Code to learn C++. I downloaded the latest version of the compiler (g++) and tried running the following simple code, which (if I understand this correctly) should print a "conversion from double to float" warning:

int main(){
    float f{4.1};
    return 0;
}

However everything goes absolutely smooth and nothing gets printed. When I try to compile this directly through the terminal, I use the following command g++ -Wconversion myfile.cpp, the compiler goes through and the warning pops up. So I guess this is a VS Code problem. I tried going through the tasks.json file and adding the options to show warnings, and now it looks like this

{
    "tasks": [
        {
            "type": "cppbuild",
            "label": "C/C++: g++.exe build active file",
            "command": "C:\\msys64\\mingw64\\bin\\g++.exe",
            "args": [
                "-fdiagnostics-color=always",
                "-g",
                "${file}",
                "-o",
                "${fileDirname}\\${fileBasenameNoExtension}.exe",
                "-Wall",
                "-Weffc++",
                "-Wextra",
                "-Wconversion",
                "-Wsign-conversion",
            ],
            "options": {
                "cwd": "C:\\msys64\\mingw64\\bin"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "detail": "Task generated by Debugger."
        }
    ],
    "version": "2.0.0"
}

but this seems to be doing nothing.