Determining the possibility of uncatchable panic

It is necessary to determine whether there exists a scenario in this program where a panic occurs that is not recovered by recover().

package main

import (
    "fmt"
    "sync"
    "time"
)

func main() {
    wg := sync.WaitGroup{}
    ch := make(chan struct{}, 5)

    for i := 0; i < 10; i++ {
        wg.Add(1)
        go func() {
            defer wg.Done()
            printNumber(ch, i)
        }()
    }

    wg.Wait()
    close(ch)
}

func printNumber(ch chan struct{}, n int) {
    defer func() {
        if r := recover(); r != nil {
            fmt.Println(r)
        }
    }()

    ch <- struct{}{}
    time.Sleep(time.Second)
    fmt.Println(1 / n)
    <-ch
}