diff --git a/internal/builders/go/main.go b/internal/builders/go/main.go
index 63bb341477..2255ca6e25 100644
--- a/internal/builders/go/main.go
+++ b/internal/builders/go/main.go
@@ -116,18 +116,17 @@ func main() {
 
 	switch os.Args[1] {
 	case buildCmd.Name():
-		buildCmd.Parse(os.Args[2:])
+		check(buildCmd.Parse(os.Args[2:]))
 		if len(buildCmd.Args()) < 1 {
 			usage(os.Args[0])
 		}
 		configFile := buildCmd.Args()[0]
 		evaluatedEnvs := buildCmd.Args()[1]
 
-		err := runBuild(*buildDry, configFile, evaluatedEnvs)
-		check(err)
+		check(runBuild(*buildDry, configFile, evaluatedEnvs))
 
 	case provenanceCmd.Name():
-		provenanceCmd.Parse(os.Args[2:])
+		check(provenanceCmd.Parse(os.Args[2:]))
 		// Note: *provenanceEnv may be empty.
 		if *provenanceName == "" || *provenanceDigest == "" ||
 			*provenanceCommand == "" || *provenanceWorkingDir == "" {
diff --git a/internal/builders/go/main_test.go b/internal/builders/go/main_test.go
index 7594c7a8fc..a1f546415f 100644
--- a/internal/builders/go/main_test.go
+++ b/internal/builders/go/main_test.go
@@ -340,7 +340,9 @@ func (r *run) end() string {
 	os.Stdout = r.oldStdout
 
 	var buf bytes.Buffer
-	io.Copy(&buf, r.rPipe)
+	if _, err := io.Copy(&buf, r.rPipe); err != nil {
+		panic(err)
+	}
 	s := buf.String()
 
 	r.oldStdout = nil
diff --git a/internal/builders/go/pkg/config.go b/internal/builders/go/pkg/config.go
index d5e58016e8..9756c14953 100644
--- a/internal/builders/go/pkg/config.go
+++ b/internal/builders/go/pkg/config.go
@@ -38,7 +38,7 @@ type goReleaserConfigFile struct {
 	Env     []string `yaml:"env"`
 	Flags   []string `yaml:"flags"`
 	Ldflags []string `yaml:"ldflags"`
-	Binary  string   `yaml:"binary`
+	Binary  string   `yaml:"binary"`
 	Version int      `yaml:"version"`
 	Main    *string  `yaml:"main"`
 	Dir     *string  `yaml:"dir"`
diff --git a/internal/builders/go/pkg/marshall.go b/internal/builders/go/pkg/marshall.go
index a6a5a53040..5055877baa 100644
--- a/internal/builders/go/pkg/marshall.go
+++ b/internal/builders/go/pkg/marshall.go
@@ -40,23 +40,3 @@ func marshallToBytes(args interface{}) ([]byte, error) {
 	}
 	return []byte(encoded), nil
 }
-
-// TODO: use generics to support any type.
-func unmarshallList(arg string) ([]string, error) {
-	var res []string
-	// If argument is empty, return an empty list early,
-	// because `json.Unmarshal` would fail.
-	if arg == "" {
-		return res, nil
-	}
-
-	cs, err := base64.StdEncoding.DecodeString(arg)
-	if err != nil {
-		return res, fmt.Errorf("base64.StdEncoding.DecodeString: %w", err)
-	}
-
-	if err := json.Unmarshal(cs, &res); err != nil {
-		return []string{}, fmt.Errorf("json.Unmarshal: %w", err)
-	}
-	return res, nil
-}
diff --git a/internal/builders/go/pkg/provenance.go b/internal/builders/go/pkg/provenance.go
index 6444ab87f7..f6dd7ab2d8 100644
--- a/internal/builders/go/pkg/provenance.go
+++ b/internal/builders/go/pkg/provenance.go
@@ -29,12 +29,8 @@ import (
 )
 
 const (
-	parametersVersion  int = 1
 	buildConfigVersion int = 1
 	buildType              = "https://github.com/slsa-framework/slsa-github-generator/go@v1"
-	requestTokenEnvKey     = "ACTIONS_ID_TOKEN_REQUEST_TOKEN"
-	requestURLEnvKey       = "ACTIONS_ID_TOKEN_REQUEST_URL"
-	audience               = "slsa-framework/slsa-github-generator"
 )
 
 type (
diff --git a/internal/builders/go/pkg/utils.go b/internal/builders/go/pkg/utils.go
index 984ecb5fae..9bd279e1e9 100644
--- a/internal/builders/go/pkg/utils.go
+++ b/internal/builders/go/pkg/utils.go
@@ -44,15 +44,6 @@ func pathIsUnderCurrentDirectory(path string) error {
 	return nil
 }
 
-func isDirectory(path string) (bool, error) {
-	fileInfo, err := os.Stat(path)
-	if err != nil {
-		return false, err
-	}
-
-	return fileInfo.IsDir(), err
-}
-
 func UnmarshallList(arg string) ([]string, error) {
 	var res []string
 	// If argument is empty, return an empty list early,