cannot load precompiled module `demo.wasm` unless --allow-precompiled is passed

Question

I'm trying to follow a WASI-tutorial but all I'm getting are errors. I'm currently using wasmtime-cli version 1.0.0, and clang 14.0.0.

The tutorial has 3 simple steps.

1. save sample code to demo.c. This code is shown at the bottom of this question.
2. compile with clang demo.c -o demo.wasm
3. run with wasmtime demo.wasm. This results in the error,

Error: failed to run main module `demo.wasm`

Caused by:
    cannot load precompiled module `demo.wasm` unless --allow-precompiled is passed

Running again with wasmtime --allow-precompiled demo.wasm results in another error.

Error: failed to run main module `demo.wasm`

Caused by:
    bytes are not a compatible serialized wasmtime module

What could be causing this? How can I get this demo working?

// demo.c
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>

int main(int argc, char **argv) {
    ssize_t n, m;
    char buf[BUFSIZ];

    if (argc != 3) {
        fprintf(stderr, "usage: %s <from> <to>\n", argv[0]);
        exit(1);
    }

    int in = open(argv[1], O_RDONLY);
    if (in < 0) {
        fprintf(stderr, "error opening input %s: %s\n", argv[1], strerror(errno));
        exit(1);
    }

    int out = open(argv[2], O_WRONLY | O_CREAT, 0660);
    if (out < 0) {
        fprintf(stderr, "error opening output %s: %s\n", argv[2], strerror(errno));
        exit(1);
    }

    while ((n = read(in, buf, BUFSIZ)) > 0) {
        char *ptr = buf;
        while (n > 0) {
            m = write(out, ptr, (size_t)n);
            if (m < 0) {
                fprintf(stderr, "write error: %s\n", strerror(errno));
                exit(1);
            }
            n -= m;
            ptr += m;
        }
    }

    if (n < 0) {
        fprintf(stderr, "read error: %s\n", strerror(errno));
        exit(1);
    }

    return EXIT_SUCCESS;
}