pub fn main(world: World) -> Void raises {
    let fs: Fs = std.fs.host()
    let created: Maybe<owned<File>> = std.fs.create(fs, ".zero/bench/zero-readall-input.txt")
    if created.has {
        var file: owned<File> = created.value
        if !std.fs.writeAll(&mut file, std.mem.span("readall payload\n")) {
            return
        }
    }
    var storage: [64]u8 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
    var alloc: FixedBufAlloc = std.mem.fixedBufAlloc(storage)
    var i: i32 = 0
    var hits: i32 = 0
    while i < 1000 {
        std.mem.reset(&mut alloc)
        let body: Maybe<owned<ByteBuf>> = std.fs.readAll(alloc, fs, ".zero/bench/zero-readall-input.txt", 64)
        if body.has {
            var buf: owned<ByteBuf> = body.value
            if std.mem.eqlBytes(std.mem.bufBytes(&buf), std.mem.span("readall payload\n")) {
                hits = hits + 1
            }
        }
        i = i + 1
    }
    if hits == 1000 {
        check world.out.write("readall\n")
    }
}