diff --git a/runner/engine.go b/runner/engine.go
index 7af4ed18..9c73a614 100644
--- a/runner/engine.go
+++ b/runner/engine.go
@@ -434,14 +434,12 @@ func (e *Engine) runCommand(command string) error {
 		stdout.Close()
 		stderr.Close()
 	}()
-	_, _ = io.Copy(os.Stdout, stdout)
-	_, _ = io.Copy(os.Stderr, stderr)
+
+	copyOutput(os.Stdout, stdout)
+	copyOutput(os.Stderr, stderr)
+
 	// wait for command to finish
-	err = cmd.Wait()
-	if err != nil {
-		return err
-	}
-	return nil
+	return cmd.Wait()
 }
 
 // run cmd option in .air.toml
@@ -551,15 +549,9 @@ func (e *Engine) runBin() error {
 					go killFunc(cmd, stdout, stderr, killCh, processExit)
 				})
 
-				go func() {
-					_, _ = io.Copy(os.Stdout, stdout)
-					_, _ = cmd.Process.Wait()
-				}()
+				go copyOutput(os.Stdout, stdout)
+				go copyOutput(os.Stderr, stderr)
 
-				go func() {
-					_, _ = io.Copy(os.Stderr, stderr)
-					_, _ = cmd.Process.Wait()
-				}()
 				state, _ := cmd.Process.Wait()
 				close(processExit)
 				switch state.ExitCode() {
diff --git a/runner/util.go b/runner/util.go
index 80a71265..932c60b5 100644
--- a/runner/util.go
+++ b/runner/util.go
@@ -1,9 +1,11 @@
 package runner
 
 import (
+	"bufio"
 	"crypto/sha256"
 	"encoding/hex"
 	"errors"
+	"io"
 	"log"
 	"os"
 	"path/filepath"
@@ -206,6 +208,13 @@ func (e *Engine) logWithLock(f func()) {
 	e.ll.Unlock()
 }
 
+func copyOutput(dst io.Writer, src io.Reader) {
+	scanner := bufio.NewScanner(src)
+	for scanner.Scan() {
+		dst.Write([]byte(scanner.Text() + "\n"))
+	}
+}
+
 func expandPath(path string) (string, error) {
 	if strings.HasPrefix(path, "~/") {
 		home := os.Getenv("HOME")