diff --git a/go.mod b/go.mod
index 96db292b5..630e77a47 100644
--- a/go.mod
+++ b/go.mod
@@ -84,7 +84,7 @@ require (
 	github.com/lusis/go-artifactory v0.0.0-20160115162124-7e4ce345df82
 	github.com/masterzen/simplexml v0.0.0-20190410153822-31eea3082786 // indirect
 	github.com/masterzen/winrm v0.0.0-20200615185753-c42b5136ff88
-	github.com/mattn/go-colorable v0.1.8
+	github.com/mattn/go-colorable v0.1.8 // indirect
 	github.com/mattn/go-isatty v0.0.12
 	github.com/mattn/go-shellwords v1.0.4
 	github.com/miekg/dns v1.0.8 // indirect
@@ -97,7 +97,6 @@ require (
 	github.com/mitchellh/gox v1.0.1
 	github.com/mitchellh/mapstructure v1.1.2
 	github.com/mitchellh/panicwrap v1.0.0
-	github.com/mitchellh/prefixedio v0.0.0-20190213213902-5733675afd51
 	github.com/mitchellh/reflectwalk v1.0.1
 	github.com/nu7hatch/gouuid v0.0.0-20131221200532-179d4d0c4d8d // indirect
 	github.com/packer-community/winrmcp v0.0.0-20180921211025-c76d91c1e7db
diff --git a/go.sum b/go.sum
index 4866cfeb7..7eb70d228 100644
--- a/go.sum
+++ b/go.sum
@@ -246,8 +246,6 @@ github.com/hashicorp/go-msgpack v0.5.4 h1:SFT72YqIkOcLdWJUYcriVX7hbrZpwc/f7h8aW2
 github.com/hashicorp/go-msgpack v0.5.4/go.mod h1:ahLV/dePpqEmjfWmKiqvPkv/twdG7iPBM1vqhUKIvfM=
 github.com/hashicorp/go-multierror v1.0.0 h1:iVjPR7a6H0tWELX5NxNe7bYopibicUzc7uPribsnS6o=
 github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk=
-github.com/hashicorp/go-plugin v1.3.0 h1:4d/wJojzvHV1I4i/rrjVaeuyxWrLzDE1mDCyDy8fXS8=
-github.com/hashicorp/go-plugin v1.3.0/go.mod h1:F9eH4LrE/ZsRdbwhfjs9k9HoDUwAHnYtXdgmf1AVNs0=
 github.com/hashicorp/go-retryablehttp v0.5.2 h1:AoISa4P4IsW0/m4T6St8Yw38gTl5GtBAgfkhYh1xAz4=
 github.com/hashicorp/go-retryablehttp v0.5.2/go.mod h1:9B5zBasrRhHXnJnui7y6sL7es7NDiJgTc6Er0maI1Xs=
 github.com/hashicorp/go-rootcerts v1.0.0 h1:Rqb66Oo1X/eSV1x66xbDccZjhJigjg0+e82kpwzSwCI=
@@ -384,8 +382,6 @@ github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQz
 github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
 github.com/mitchellh/panicwrap v1.0.0 h1:67zIyVakCIvcs69A0FGfZjBdPleaonSgGlXRSRlb6fE=
 github.com/mitchellh/panicwrap v1.0.0/go.mod h1:pKvZHwWrZowLUzftuFq7coarnxbBXU4aQh3N0BJOeeA=
-github.com/mitchellh/prefixedio v0.0.0-20190213213902-5733675afd51 h1:eD92Am0Qf3rqhsOeA1zwBHSfRkoHrt4o6uORamdmJP8=
-github.com/mitchellh/prefixedio v0.0.0-20190213213902-5733675afd51/go.mod h1:kB1naBgV9ORnkiTVeyJOI1DavaJkG4oNIq0Af6ZVKUo=
 github.com/mitchellh/reflectwalk v1.0.0 h1:9D+8oIskB4VJBN5SFlmc27fSlIBZaov1Wpk/IfikLNY=
 github.com/mitchellh/reflectwalk v1.0.0/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
 github.com/mitchellh/reflectwalk v1.0.1 h1:FVzMWA5RllMAKIdUSC8mdWo3XtwoecrH79BY70sEEpE=
diff --git a/main.go b/main.go
index 33d39e323..f56be6f3f 100644
--- a/main.go
+++ b/main.go
@@ -3,7 +3,6 @@ package main
 import (
 	"encoding/json"
 	"fmt"
-	"io"
 	"io/ioutil"
 	"log"
 	"net"
@@ -11,7 +10,6 @@ import (
 	"path/filepath"
 	"runtime"
 	"strings"
-	"sync"
 
 	"github.com/hashicorp/go-plugin"
 	"github.com/hashicorp/terraform-svchost/disco"
@@ -21,12 +19,10 @@ import (
 	"github.com/hashicorp/terraform/httpclient"
 	"github.com/hashicorp/terraform/internal/logging"
 	"github.com/hashicorp/terraform/version"
-	"github.com/mattn/go-colorable"
 	"github.com/mattn/go-shellwords"
 	"github.com/mitchellh/cli"
 	"github.com/mitchellh/colorstring"
 	"github.com/mitchellh/panicwrap"
-	"github.com/mitchellh/prefixedio"
 
 	backendInit "github.com/hashicorp/terraform/backend/init"
 )
@@ -59,15 +55,8 @@ func realMain() int {
 		defer os.Remove(logTempFile.Name())
 		defer logTempFile.Close()
 
-		// Setup the prefixed readers that send data properly to
-		// stdout/stderr.
-		doneCh := make(chan struct{})
-		outR, outW := io.Pipe()
-		go copyOutput(outR, doneCh)
-
 		// Create the configuration for panicwrap and wrap our executable
 		wrapConfig.Handler = logging.PanicHandler(logTempFile)
-		wrapConfig.Stdout = outW
 		wrapConfig.IgnoreSignals = ignoreSignals
 		wrapConfig.ForwardSignals = forwardSignals
 		exitStatus, err := panicwrap.Wrap(&wrapConfig)
@@ -76,20 +65,7 @@ func realMain() int {
 			return 1
 		}
 
-		// If >= 0, we're the parent, so just exit
-		if exitStatus >= 0 {
-			// Close the stdout writer so that our copy process can finish
-			outW.Close()
-
-			// Wait for the output copying to finish
-			<-doneCh
-
-			return exitStatus
-		}
-
-		// We're the child, so just close the tempfile we made in order to
-		// save file handles since the tempfile is only used by the parent.
-		logTempFile.Close()
+		return exitStatus
 	}
 
 	// Call the real main
@@ -97,15 +73,10 @@ func realMain() int {
 }
 
 func init() {
-	Ui = &cli.PrefixedUi{
-		AskPrefix:    OutputPrefix,
-		OutputPrefix: OutputPrefix,
-		InfoPrefix:   OutputPrefix,
-		ErrorPrefix:  ErrorPrefix,
-		Ui: &cli.BasicUi{
-			Writer: os.Stdout,
-			Reader: os.Stdin,
-		},
+	Ui = &cli.BasicUi{
+		Writer:      os.Stdout,
+		ErrorWriter: os.Stderr,
+		Reader:      os.Stdin,
 	}
 }
 
@@ -299,65 +270,6 @@ func wrappedMain() int {
 	return exitCode
 }
 
-// copyOutput uses output prefixes to determine whether data on stdout
-// should go to stdout or stderr. This is due to panicwrap using stderr
-// as the log and error channel.
-func copyOutput(r io.Reader, doneCh chan<- struct{}) {
-	defer close(doneCh)
-
-	pr, err := prefixedio.NewReader(r)
-	if err != nil {
-		panic(err)
-	}
-
-	stderrR, err := pr.Prefix(ErrorPrefix)
-	if err != nil {
-		panic(err)
-	}
-	stdoutR, err := pr.Prefix(OutputPrefix)
-	if err != nil {
-		panic(err)
-	}
-	defaultR, err := pr.Prefix("")
-	if err != nil {
-		panic(err)
-	}
-
-	var stdout io.Writer = os.Stdout
-	var stderr io.Writer = os.Stderr
-
-	if runtime.GOOS == "windows" {
-		stdout = colorable.NewColorableStdout()
-		stderr = colorable.NewColorableStderr()
-
-		// colorable is not concurrency-safe when stdout and stderr are the
-		// same console, so we need to add some synchronization to ensure that
-		// we can't be concurrently writing to both stderr and stdout at
-		// once, or else we get intermingled writes that create gibberish
-		// in the console.
-		wrapped := synchronizedWriters(stdout, stderr)
-		stdout = wrapped[0]
-		stderr = wrapped[1]
-	}
-
-	var wg sync.WaitGroup
-	wg.Add(3)
-	go func() {
-		defer wg.Done()
-		io.Copy(stderr, stderrR)
-	}()
-	go func() {
-		defer wg.Done()
-		io.Copy(stdout, stdoutR)
-	}()
-	go func() {
-		defer wg.Done()
-		io.Copy(stdout, defaultR)
-	}()
-
-	wg.Wait()
-}
-
 func mergeEnvArgs(envName string, cmd string, args []string) ([]string, error) {
 	v := os.Getenv(envName)
 	if v == "" {