fix for mpi

test/runtests_runner.jl

@@ -37,9 +37,10 @@ function run_tests()
     catch err
         Base.showerror(stderr, err, Base.catch_backtrace())
     end
-    println()
+
     lines = split(output, "\n")
     # Print failed tests.
+    println()
     for id in findall(occursin.("Test Failed", lines))
         id_context = id
         while !isempty(lines[id_context])
@@ -50,7 +51,9 @@ function run_tests()
     end
     # Print the summary.
     idx = findfirst(occursin.(r"^Test Summary:", lines))
-    println(join(lines[idx:end], "\n"))
+    if !isnothing(idx)
+        println(join(lines[idx:end], "\n"))
+    end
 end
 
 run_tests()