From d40d3eca88b015c8f9544d6c8ebca3e666b55e05 Mon Sep 17 00:00:00 2001
From: Adrien Delorme <adrien.delorme@icloud.com>
Date: Fri, 3 May 2019 07:46:26 +0200
Subject: [PATCH] swap semaquire and wg.Add to avoid a deadlock

---
 command/build.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/command/build.go b/command/build.go
index 4602f28c1..62c3a426c 100644
--- a/command/build.go
+++ b/command/build.go
@@ -180,13 +180,13 @@ func (c *BuildCommand) Run(args []string) int {
 		b := builds[i]
 		name := b.Name()
 		ui := buildUis[name]
-		// Increment the waitgroup so we wait for this item to finish properly
-		wg.Add(1)
 		if err := limitParallel.Acquire(buildCtx, 1); err != nil {
 			ui.Error(fmt.Sprintf("Build '%s' failed to acquire semaphore: %s", name, err))
 			errors[name] = err
 			break
 		}
+		// Increment the waitgroup so we wait for this item to finish properly
+		wg.Add(1)
 
 		// Run the build in a goroutine
 		go func() {