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-rw-r--r--t/GNUmakefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/t/GNUmakefile b/t/GNUmakefile
index 1a95992..12b60c4 100644
--- a/t/GNUmakefile
+++ b/t/GNUmakefile
@@ -50,7 +50,7 @@ test-bin-$(RUBY_VERSION)/rainbows: ../bin/rainbows
         mkdir -p $(@D)
         install -m 755 $^ $@+
         $(ruby) -i -p -e '$$_.gsub!(%r{^#!.*$$},"#!$(ruby_bin)")' $@+
-        cmp $@+ $@ || mv $@+ $@
+        cmp $@+ $@ 2>/dev/null || mv $@+ $@
         $(RM) $@+
 
 $(T): export ruby := $(ruby)