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-rw-r--r--src/test/run-make-fulldeps/alloc-extern-crates/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/test/run-make-fulldeps/alloc-extern-crates/Makefile b/src/test/run-make-fulldeps/alloc-extern-crates/Makefile
index 7197f4e17e3..338caa5614e 100644
--- a/src/test/run-make-fulldeps/alloc-extern-crates/Makefile
+++ b/src/test/run-make-fulldeps/alloc-extern-crates/Makefile
@@ -2,4 +2,4 @@
 
 all:
 	$(RUSTC) fakealloc.rs
-	$(RUSTC) --crate-type=rlib ../../../liballoc/lib.rs --cfg feature=\"external_crate\" --extern external=$(TMPDIR)/$(shell $(RUSTC) --print file-names fakealloc.rs)
+	$(RUSTC) --edition=2018 --crate-type=rlib ../../../liballoc/lib.rs --cfg feature=\"external_crate\" --extern external=$(TMPDIR)/$(shell $(RUSTC) --print file-names fakealloc.rs)