From f4947236dc6e249062ad4dc5341e71f4fd8e50bf Mon Sep 17 00:00:00 2001
From: Michael Vines <mvines@gmail.com>
Date: Fri, 7 Sep 2018 10:19:24 -0700
Subject: [PATCH] Keep cargo-target-cache size under 6GB-ish

---
 .buildkite/hooks/pre-command | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/.buildkite/hooks/pre-command b/.buildkite/hooks/pre-command
index bed5503fa5..57fa49f852 100644
--- a/.buildkite/hooks/pre-command
+++ b/.buildkite/hooks/pre-command
@@ -7,6 +7,16 @@
 #
 (
   d=$HOME/cargo-target-cache/"$CARGO_TARGET_CACHE_NAME"
+
+  if [[ -d $d ]]; then
+    du -hs "$d"
+    read -r cacheSizeInGB _ < <(du -s --block-size=1000000000 "$d")
+    if [[ $cacheSizeInGB -gt 5 ]]; then
+      echo "$d has gotten too large, removing it"
+      rm -rf "$d"
+    fi
+  fi
+
   mkdir -p "$d"/target
   set -x
   rsync -a --delete --link-dest="$d" "$d"/target .