x/crypto: No working with go1.13

[cchantep]

What version of Go are you using (go version)?

go version go1.13.1 darwin/amd64

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

go env Output

$ go env
GO111MODULE=""

GOARCH="amd64"

GOBIN=""

GOCACHE="/Users/cchantep/Library/Caches/go-build"

GOENV="/Users/cchantep/Library/Application Support/go/env"

GOEXE=""

GOFLAGS=""

GOHOSTARCH="amd64"

GOHOSTOS="darwin"

GONOPROXY=""

GONOSUMDB=""

GOOS="darwin"

GOPATH="/Users/cchantep/go"

GOPRIVATE=""

GOPROXY="https://proxy.golang.org,direct"

GOROOT="/opt/local/lib/go"

GOSUMDB="sum.golang.org"

GOTMPDIR=""

GOTOOLDIR="/opt/local/lib/go/pkg/tool/darwin_amd64"

GCCGO="gccgo"

AR="ar"

CC="/usr/bin/clang"

CXX="clang++"

CGO_ENABLED="1"

GOMOD=""

CGO_CFLAGS="-g -O2"

CGO_CPPFLAGS=""

CGO_CXXFLAGS="-g -O2"

CGO_FFLAGS="-g -O2"

CGO_LDFLAGS="-g -O2"

PKG_CONFIG="pkg-config"

GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/72/yly7jbm160gfc2yxtr2mllzw0000gn/T/go-build029258679=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

Try to build (gb build):

package main

import (
	"flag"
	"io/ioutil"
	"log"
	"golang.org/x/crypto/ssh"
)

var (
	sftpAddr = flag.String("sftp-addr", "sftp-host:22", "Address to sFTP server")
	sftpKey = flag.String("sftp-key", "/path/to/private.key", "Path to private SSH key")
)

func main() {
	flag.Usage = func() {
		flag.PrintDefaults()
	}

	flag.Parse()

	// Load private key
	key, err := ioutil.ReadFile(*sftpKey)

	if err != nil {
		log.Fatalf("Unable to read private key: %v", err)
	}

	// Create the Signer for this private key.
	signer, err := ssh.ParsePrivateKey(key)

	if err != nil {
		log.Fatalf("Unable to parse private key: %v", err)
	}

	var hostKey ssh.PublicKey

	config := &ssh.ClientConfig{
		User: "user",
		Auth: []ssh.AuthMethod{
			// Use the PublicKeys method for remote authentication.
			ssh.PublicKeys(signer),
		},
		HostKeyCallback: ssh.FixedHostKey(hostKey),
	}

	// Connect to the remote server and perform the SSH handshake.
	client, err := ssh.Dial("tcp", *sftpAddr, config)

	if err != nil {
		log.Fatalf("Unable to connect: %v", err)
	}

	defer client.Close()

	// ---

	log.Printf("OK: %s", *sftpAddr)
}

What did you expect to see?

Successful build

What did you see instead?

golang.org/x/crypto/ed25519
# golang.org/x/crypto/ssh
cipher.go:21:2: can't find import: "golang.org/x/crypto/internal/chacha20"

[bradfitz]

We don't support the gb command. You can file a gb bug report at https://github.com/constabulary/gb/issues