[tests] Add some debug printing.
- This is to help track down:
https://bugs.swift.org/browse/SR-2788
diff --git a/tests/BuildSystem/Build/missing-inputs.llbuild b/tests/BuildSystem/Build/missing-inputs.llbuild
index 5ba2a40..abe3ba2 100644
--- a/tests/BuildSystem/Build/missing-inputs.llbuild
+++ b/tests/BuildSystem/Build/missing-inputs.llbuild
@@ -7,6 +7,7 @@
# RUN: mkdir -p %t.build
# RUN: cp %s %t.build/build.llbuild
# RUN: %{llbuild} buildsystem build --serial --chdir %t.build &> %t.out || true
+# RUN: cat %t.out
# RUN: %{FileCheck} %s --input-file %t.out --check-prefix=CHECK-FAILURE
#
# CHECK-FAILURE: missing input 'input' and no rule to build it
@@ -15,6 +16,7 @@
# RUN: touch %t.build/input
# RUN: %{llbuild} buildsystem build --serial --chdir %t.build &> %t2.out || true
+# RUN: cat %t2.out
# RUN: %{FileCheck} %s --input-file %t2.out --check-prefix=CHECK-FAILURE-2
#
# At this point, we have unblocked the commands, and commands are allowed to run
