diff --git a/ci/release/template/scripts/lib.sh b/ci/release/template/scripts/lib.sh
index 486d25ac6..0bdd40454 100644
--- a/ci/release/template/scripts/lib.sh
+++ b/ci/release/template/scripts/lib.sh
@@ -55,12 +55,14 @@ tput() {
 
 should_color() {
   if [ -n "${COLOR-}" ]; then
-    if [ "$COLOR" = 0 -o "$COLOR" = false ]; then
-      _COLOR=
-      return 1
-    elif [ "$COLOR" = 1 -o "$COLOR" = true ]; then
+    if [ "$COLOR" = 1 -o "$COLOR" = true ]; then
       _COLOR=1
+      __COLOR=1
       return 0
+    elif [ "$COLOR" = 0 -o "$COLOR" = false ]; then
+      _COLOR=
+      __COLOR=0
+      return 1
     else
       printf '$COLOR must be 0, 1, false or true but got %s\n' "$COLOR" >&2
     fi
@@ -68,9 +70,11 @@ should_color() {
 
   if [ -t 1 -a "${TERM-}" != dumb ]; then
     _COLOR=1
+    __COLOR=1
     return 0
   else
     _COLOR=
+    __COLOR=0
     return 1
   fi
 }
@@ -114,9 +118,9 @@ printfp() {(
   fi
   should_color || true
   if [ $# -eq 0 ]; then
-    printf '%s' "$(COLOR=${_COLOR-} setaf "$FGCOLOR" "$prefix")"
+    printf '%s' "$(COLOR=$__COLOR setaf "$FGCOLOR" "$prefix")"
   else
-    printf '%s: %s\n' "$(COLOR=${_COLOR-} setaf "$FGCOLOR" "$prefix")" "$(printf "$@")"
+    printf '%s: %s\n' "$(COLOR=$__COLOR setaf "$FGCOLOR" "$prefix")" "$(printf "$@")"
   fi
 )}
 
@@ -125,7 +129,7 @@ catp() {
   shift
 
   should_color || true
-  sed "s/^/$(COLOR=${_COLOR-} printfp "$prefix" '')/"
+  sed "s/^/$(COLOR=$__COLOR printfp "$prefix" '')/"
 }
 
 repeat() {
@@ -152,17 +156,17 @@ printferr() {
 
 logp() {
   should_color >&2 || true
-  COLOR=${_COLOR-} echop "$@" | humanpath >&2
+  COLOR=$__COLOR echop "$@" | humanpath >&2
 }
 
 logfp() {
   should_color >&2 || true
-  COLOR=${_COLOR-} printfp "$@" | humanpath >&2
+  COLOR=$__COLOR printfp "$@" | humanpath >&2
 }
 
 logpcat() {
   should_color >&2 || true
-  COLOR=${_COLOR-} catp "$@" | humanpath >&2
+  COLOR=$__COLOR catp "$@" | humanpath >&2
 }
 
 log() {
@@ -287,3 +291,10 @@ runtty() {
       return 1
   esac
 }
+
+capcode() {
+  set +e
+  "$@"
+  code=$?
+  set -e
+}
diff --git a/ci/sub b/ci/sub
index 0dacc9c6c..702b77122 160000
--- a/ci/sub
+++ b/ci/sub
@@ -1 +1 @@
-Subproject commit 0dacc9c6cee5b8d901f22f57e9dc7f9acf640cbc
+Subproject commit 702b771228f41e5485b5f3f593ce79f6efcb555d
diff --git a/install.sh b/install.sh
index 7dca28652..74d2ff8e3 100755
--- a/install.sh
+++ b/install.sh
@@ -61,12 +61,14 @@ tput() {
 
 should_color() {
   if [ -n "${COLOR-}" ]; then
-    if [ "$COLOR" = 0 -o "$COLOR" = false ]; then
-      _COLOR=
-      return 1
-    elif [ "$COLOR" = 1 -o "$COLOR" = true ]; then
+    if [ "$COLOR" = 1 -o "$COLOR" = true ]; then
       _COLOR=1
+      __COLOR=1
       return 0
+    elif [ "$COLOR" = 0 -o "$COLOR" = false ]; then
+      _COLOR=
+      __COLOR=0
+      return 1
     else
       printf '$COLOR must be 0, 1, false or true but got %s\n' "$COLOR" >&2
     fi
@@ -74,9 +76,11 @@ should_color() {
 
   if [ -t 1 -a "${TERM-}" != dumb ]; then
     _COLOR=1
+    __COLOR=1
     return 0
   else
     _COLOR=
+    __COLOR=0
     return 1
   fi
 }
@@ -120,9 +124,9 @@ printfp() {(
   fi
   should_color || true
   if [ $# -eq 0 ]; then
-    printf '%s' "$(COLOR=${_COLOR-} setaf "$FGCOLOR" "$prefix")"
+    printf '%s' "$(COLOR=$__COLOR setaf "$FGCOLOR" "$prefix")"
   else
-    printf '%s: %s\n' "$(COLOR=${_COLOR-} setaf "$FGCOLOR" "$prefix")" "$(printf "$@")"
+    printf '%s: %s\n' "$(COLOR=$__COLOR setaf "$FGCOLOR" "$prefix")" "$(printf "$@")"
   fi
 )}
 
@@ -131,7 +135,7 @@ catp() {
   shift
 
   should_color || true
-  sed "s/^/$(COLOR=${_COLOR-} printfp "$prefix" '')/"
+  sed "s/^/$(COLOR=$__COLOR printfp "$prefix" '')/"
 }
 
 repeat() {
@@ -158,17 +162,17 @@ printferr() {
 
 logp() {
   should_color >&2 || true
-  COLOR=${_COLOR-} echop "$@" | humanpath >&2
+  COLOR=$__COLOR echop "$@" | humanpath >&2
 }
 
 logfp() {
   should_color >&2 || true
-  COLOR=${_COLOR-} printfp "$@" | humanpath >&2
+  COLOR=$__COLOR printfp "$@" | humanpath >&2
 }
 
 logpcat() {
   should_color >&2 || true
-  COLOR=${_COLOR-} catp "$@" | humanpath >&2
+  COLOR=$__COLOR catp "$@" | humanpath >&2
 }
 
 log() {
@@ -293,6 +297,13 @@ runtty() {
       return 1
   esac
 }
+
+capcode() {
+  set +e
+  "$@"
+  code=$?
+  set -e
+}
 #!/bin/sh
 if [ "${LIB_FLAG-}" ]; then
   return 0
diff --git a/make.sh b/make.sh
index 9f6290641..c05c8b678 100755
--- a/make.sh
+++ b/make.sh
@@ -1,7 +1,9 @@
 #!/bin/sh
 set -eu
-if [ ! -d "$(dirname "$0")/ci/sub/.git" ]; then
+if [ ! -e "$(dirname "$0")/ci/sub/.git" ]; then
+  set -x
   git submodule update --init
+  set +x
 fi
 . "$(dirname "$0")/ci/sub/lib.sh"
 PATH="$(cd -- "$(dirname "$0")" && pwd)/ci/sub/bin:$PATH"