diff --git a/src/test/run-make-fulldeps/treat-err-as-bug/Makefile b/src/test/run-make-fulldeps/treat-err-as-bug/Makefile
deleted file mode 100644
index 57cac76aec2a5..0000000000000
--- a/src/test/run-make-fulldeps/treat-err-as-bug/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
--include ../tools.mk
-
-all:
-	$(RUSTC) err.rs -Z treat-err-as-bug 2>&1 \
-	    | $(CGREP) "panicked at 'aborting due to \`-Z treat-err-as-bug=1\`'"
-	$(RUSTC) delay_span_bug.rs -Z treat-err-as-bug 2>&1 \
-	    | $(CGREP) "panicked at 'aborting due to \`-Z treat-err-as-bug=1\`'"
diff --git a/src/test/run-make-fulldeps/treat-err-as-bug/delay_span_bug.rs b/src/test/run-make-fulldeps/treat-err-as-bug/delay_span_bug.rs
deleted file mode 100644
index dad33e498b52f..0000000000000
--- a/src/test/run-make-fulldeps/treat-err-as-bug/delay_span_bug.rs
+++ /dev/null
@@ -1,4 +0,0 @@
-#![feature(rustc_attrs)]
-
-#[rustc_error(delay_span_bug_from_inside_query)]
-fn main() {}