Update tests

Signed-off-by: Rudi Grinberg <rudi.grinberg@gmail.com>

test/blackbox-tests/test-cases/quoting/run.t

@@ -3,14 +3,9 @@ that ${@} is not quoted and doesn't contain exactly 1 element
 
   $ dune build --root bad x
   Entering directory 'bad'
-  Error: Rule failed to generate the following targets:
-  - x
-  - y
-  [1]
-
-  $ dune build --root bad x
   File "dune", line 3, characters 26-30:
   Error: Variable ${@} expands to 2 values, however a single value is expected here. Please quote this atom.
+  [1]
 
 The targets should only be interpreted as a single path when quoted
 
@@ -26,5 +21,6 @@ The targets should only be interpreted as a single path when quoted
     count_args alias runtest
   Number of args: 3
 
-  $ dune runtest --root quotes-multi 2>&1 | grep -v Entering
+  $ dune runtest --root quotes-multi
+  Entering directory 'quotes-multi'
   lines: foo bar baz