"kubebuilder init" command changed go 1.15 in go mod becomes 1.16

[lightjw]

What broke? What's expected?

"kubebuilder init" command changed go 1.15 in go mod becomes 1.16 .
but,my env only 1.15

quick-start of official doc :

go version go1.15.15 linux/amd64

before execute kubebuilder init, go.mod :

module guestbook

go 1.15

after execute kubebuilder init, go.mod :

module guestbook

go 1.16

require sigs.k8s.io/controller-runtime v0.8.3

kubebuilder init log:

Writing kustomize manifests for you to edit...
Writing scaffold for you to edit...
Get controller runtime:
$ go get sigs.k8s.io/controller-runtime@v0.8.3
Update dependencies:
$ go mod tidy
go mod tidy: go.mod file indicates go 1.16, but maximum supported version is 1.15
Error: failed to initialize project: unable to run post-scaffold tasks of "base.go.kubebuilder.io/v3": exit status 1
Usage:
  kubebuilder init [flags]

Examples:
  # Initialize a new project with your domain and name in copyright
  kubebuilder init --plugins go/v3 --domain example.org --owner "Your name"

  # Initialize a new project defining an specific project version
  kubebuilder init --plugins go/v3 --project-version 3


Flags:
      --component-config         create a versioned ComponentConfig file, may be 'true' or 'false'
      --domain string            domain for groups (default "my.domain")
      --fetch-deps               ensure dependencies are downloaded (default true)
  -h, --help                     help for init
      --license string           license to use to boilerplate, may be one of 'apache2', 'none' (default "apache2")
      --owner string             owner to add to the copyright
      --project-name string      name of this project
      --project-version string   project version (default "3")
      --repo string              name to use for go module (e.g., github.com/user/repo), defaults to the go package of the current working directory.
      --skip-go-version-check    if specified, skip checking the Go version

Global Flags:
      --plugins strings   plugin keys to be used for this subcommand execution

2021/08/11 15:28:31 failed to initialize project: unable to run post-scaffold tasks of "base.go.kubebuilder.io/v3": exit status 1

Reproducing this issue

1. mkdir guestbook
2. cd guestbook/
3. go mod init guestbook
4. kubebuilder init

KubeBuilder (CLI) Version

3.1.0

PROJECT version

No response

Plugin versions

No response

Other versions

go version go1.15.15 linux/amd64

GOROOT=/usr/local/go
GO111MODULE=auto

Extra Labels

No response

[swiftslee]

ref #2257

[rashmigottipati]

@011d As you are on Kubebuilder version 3.1.0, the go version needs to be v1.16+. Below are the updated prerequisites from the quickstart documentation:

https://book.kubebuilder.io/quick-start.html

[rashmigottipati]

Closing this issue as we think it's been solved with the cherry-picked PR. Please feel free to re-open this issue if it still persists.