testsuite: Elide progress output from bkpfail{16,18,19}

These tests are seemingly testing the error message, not the progress
output and the latter contains filenames with unstable hashes.

(cherry picked from commit b6639a64)

testsuite/tests/backpack/should_fail/all.T

@@ -11,10 +11,10 @@ test('bkpfail12', normal, backpack_compile_fail, [''])
 test('bkpfail13', normal, backpack_compile_fail, [''])
 test('bkpfail14', normal, backpack_compile_fail, [''])
 test('bkpfail15', normal, backpack_compile_fail, [''])
-test('bkpfail16', normalise_version('base'), backpack_compile_fail, [''])
-test('bkpfail17', normalise_version('base'), backpack_compile_fail, [''])
+test('bkpfail16', normalise_version('base'), backpack_compile_fail, ['-v0'])
+test('bkpfail17', normalise_version('base'), backpack_compile_fail, ['-v0'])
 test('bkpfail18', normal, backpack_compile_fail, [''])
-test('bkpfail19', normalise_version('base'), backpack_compile_fail, [''])
+test('bkpfail19', normalise_version('base'), backpack_compile_fail, ['-v0'])
 test('bkpfail20', normal, backpack_compile_fail, [''])
 test('bkpfail21', normal, backpack_compile_fail, [''])
 test('bkpfail22', normal, backpack_compile_fail, [''])

testsuite/tests/backpack/should_fail/bkpfail16.stderr

-[1 of 2] Processing p
-  [1 of 1] Compiling ShouldFail[sig]  ( p/ShouldFail.hsig, nothing )
-[2 of 2] Processing q
-  Instantiating q
-  [1 of 1] Including p[ShouldFail=base-4.19.1.0:Data.Bool]
-    Instantiating p[ShouldFail=base-4.19.1.0:Data.Bool]
-    [1 of 1] Compiling ShouldFail[sig]  ( p/ShouldFail.hsig, bkpfail16.out/p/p-IWIH695NuFKHfA9JCzN8tU/ShouldFail.o )
 
-<no location info>: error:
-    Something is amiss; requested module  base-4.19.1.0-inplace:Data.Bool differs from name found in the interface file base:Data.Bool (if these names look the same, try again with -dppr-debug)
+bkpfail16.out/p/p-1OqLaT7dAn947wScQQKCw5/../ShouldFail.hi:1:1: error: [GHC-93011]
+    • ‘Booly’ is exported by the hsig file, but not exported by the implementing module ‘Data.Bool’
+    • While checking that ‘Data.Bool’ implements signature ‘ShouldFail’ in ‘p[ShouldFail=Data.Bool]’.

testsuite/tests/backpack/should_fail/bkpfail17.stderr

-[1 of 2] Processing p
-  [1 of 1] Compiling ShouldFail[sig]  ( p/ShouldFail.hsig, nothing )
-[2 of 2] Processing q
-  Instantiating q
-  [1 of 1] Including p[ShouldFail=base-4.19.1.0:Prelude]
-    Instantiating p[ShouldFail=base-4.19.1.0:Prelude]
-    [1 of 1] Compiling ShouldFail[sig]  ( p/ShouldFail.hsig, bkpfail17.out/p/p-9af3lmxJNZa50ZueXSR02Y/ShouldFail.o )
 
-<no location info>: error:
-    Something is amiss; requested module  base-4.19.1.0-inplace:Prelude differs from name found in the interface file base:Prelude (if these names look the same, try again with -dppr-debug)
+<no location info>: error: [GHC-15843]
+    • Type constructor ‘Either’ has conflicting definitions in the module
+      and its hsig file.
+      Main module: type Either :: * -> * -> *
+                   data Either a b = Left a | Right b
+        Hsig file: type role Either representational phantom phantom
+                   type Either :: * -> * -> * -> *
+                   data Either a b c = Left a
+      The types have different kinds.
+    • While checking that ‘Prelude’ implements signature ‘ShouldFail’ in ‘p[ShouldFail=Prelude]’.

testsuite/tests/backpack/should_fail/bkpfail19.stderr

-[1 of 2] Processing p
-  [1 of 1] Compiling ShouldFail[sig]  ( p/ShouldFail.hsig, nothing )
-[2 of 2] Processing q
-  Instantiating q
-  [1 of 1] Including p[ShouldFail=base-4.19.1.0:Data.STRef]
-    Instantiating p[ShouldFail=base-4.19.1.0:Data.STRef]
-    [1 of 1] Compiling ShouldFail[sig]  ( p/ShouldFail.hsig, bkpfail19.out/p/p-Ak3HDozWrn3BPHIdYYNht5/ShouldFail.o )
 
-<no location info>: error:
-    Something is amiss; requested module  base-4.19.1.0-inplace:Data.STRef differs from name found in the interface file base:Data.STRef (if these names look the same, try again with -dppr-debug)
+<no location info>: error: [GHC-12424]
+    • The hsig file (re)exports ‘Data.STRef.Lazy.newSTRef’
+      but the implementing module exports a different identifier ‘GHC.STRef.newSTRef’
+    • While checking that ‘Data.STRef’ implements signature ‘ShouldFail’ in ‘p[ShouldFail=Data.STRef]’.