Golang append using make/cap vs slice literal

gistfile1.txt

❯ go test -bench=. -v ./main_test.go
goos: darwin
goarch: amd64
cpu: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
BenchmarkAppendMake
BenchmarkAppendMake-8      	17486152	        67.63 ns/op	       0 B/op	       0 allocs/op
BenchmarkAppendMakeCap
BenchmarkAppendMakeCap-8   	 2189421	       540.8 ns/op	    2040 B/op	       8 allocs/op
PASS
ok  	command-line-arguments	3.124s

main_test.go

package main

import (
	"testing"
)

func BenchmarkAppendMake(b *testing.B) {
	b.ReportAllocs()

	for i := 0; i < b.N; i++ {
		v := make([]int, 0, 100)

		for i := 0; i < 100; i++ {
			v = append(v, i)
		}
	}
}

func BenchmarkAppendMakeCap(b *testing.B) {
	b.ReportAllocs()

	for i := 0; i < b.N; i++ {
		var v []int

		for i := 0; i < 100; i++ {
			v = append(v, i)
		}
	}
}