Try using Bazel's command_log instead of piping

tests/compile/log_level/test

@@ -1,9 +1,11 @@
 #!/bin/bash -e
 . "$(dirname "$0")"/../../common.sh
 
+command_log="$(bazel info command_log)"
+
 # We use nouse_action_cache + bazel shutdown here in order to prevent the skyframe
 # cache and the persistent action cache from being used and thus getting the
 # warning we want printed, printed. The alternative is to bazel clean, which
 # takes much longer.
 bazel shutdown
-bazel build :lib --nouse_action_cache |& grep "compiling 1 Scala source"
+bazel build :lib --nouse_action_cache && grep "compiling 1 Scala source" "${command_log}"

tests/dependencies/unused/test

@@ -5,9 +5,9 @@ command_log="$(bazel info command_log)"
 
 bazel build :0_used
 ! bazel build :0_unused || false
-bazel build :0_unused && grep "buildozer 'remove deps @annex_test//:org_scalacheck_scalacheck_2_13' //dependencies/unused:0_unused" "${command_log}"
+! bazel build :0_unused && grep "buildozer 'remove deps @annex_test//:org_scalacheck_scalacheck_2_13' //dependencies/unused:0_unused" "${command_log}"
 bazel build :0_unused_whitelist
 bazel build :indirect_unused
 ! bazel build :indirect_unused_missing || false
-bazel build :indirect_unused_missing && grep "buildozer 'add deps @annex_test//:org_specs2_specs2_matcher_2_13' //dependencies/unused:indirect_unused_missing" "${command_log}"
+! bazel build :indirect_unused_missing && grep "buildozer 'add deps @annex_test//:org_specs2_specs2_matcher_2_13' //dependencies/unused:indirect_unused_missing" "${command_log}"
 bazel build :indirect_unused_whitelist

tests/plugins/classpath/test

@@ -1,16 +1,18 @@
 #!/bin/bash -e
 . "$(dirname "$0")"/../../common.sh
 
+command_log="$(bazel info command_log)"
+
 # We use nouse_action_cache + bazel shutdown here in order to prevent the skyframe
 # cache and the persistent action cache from being used and thus getting the
 # warning we want printed, printed. The alternative is to bazel clean, which
 # takes much longer.
 bazel shutdown
 # Using a worker here prevents a println this tests needs from making it
 # to the command line, so we use standalone instead.
-bazel build :inefficient-usage --strategy=ScalaCompile=standalone --nouse_action_cache |& \
+bazel build :inefficient-usage --strategy=ScalaCompile=standalone --nouse_action_cache && \
   awk '
       BEGIN                           {z  = 2}
       /slightly inefficient/          {z -= 1}
       /scalac plugin phase success/   {z -= 1}
-      END                             {exit z}'
+      END                             {exit z}' "${command_log}"

tests/resources/prefix/test

@@ -1,10 +1,12 @@
 #!/bin/bash -e
 . "$(dirname "$0")"/../../common.sh
 
+command_log="$(bazel info command_log)"
+
 bazel build :prefix
 diff <(sort expected) <(
     zipinfo -m -T --h-t "$(bazel info bazel-bin)/resources/prefix/prefix.jar" | sort
 )
 
 ! bazel build :outside
-bazel build :outside |& grep 'does not have prefix'
+! bazel build :outside && grep 'does not have prefix' "${command_log}"

tests/worker-error/test

@@ -1,5 +1,7 @@
 #!/bin/bash -e
 . "$(dirname "$0")"/../common.sh
 
+command_log="$(bazel info command_log)"
+
 bazel test :error-spec
-bazel test :fatal-error-spec |& grep -q 'java.lang.OutOfMemoryError'
+! bazel test :fatal-error-spec && grep -q 'java.lang.OutOfMemoryError' "${command_log}"

tests/worker-verbosity/test

@@ -1,12 +1,14 @@
 #!/bin/bash -e
 . "$(dirname "$0")"/../common.sh
 
+command_log="$(bazel info command_log)"
+
 # We use modify_execution_info, nouse_action_cache, and  bazel shutdown here
 # in order to prevent the disk cache, skyframe cache, and persistent action cache
 # from being used for the verbosity spec worker actions and thus getting the
 # verbosity we want getting printed. The alternative is to bazel clean, which
 # takes much longer.
 bazel shutdown
-bazel build --modify_execution_info="VerbositySpecWorkerRun=+no-cache" --nouse_action_cache :verbosity-spec-target |& grep -q "Verbosity: 0"
+bazel build --modify_execution_info="VerbositySpecWorkerRun=+no-cache" --nouse_action_cache :verbosity-spec-target && grep -q "Verbosity: 0" "${command_log}"
 bazel shutdown
-bazel build --modify_execution_info="VerbositySpecWorkerRun=+no-cache" --nouse_action_cache --worker_verbose :verbosity-spec-target |& grep -q "Verbosity: 10"
+bazel build --modify_execution_info="VerbositySpecWorkerRun=+no-cache" --nouse_action_cache --worker_verbose :verbosity-spec-target && grep -q "Verbosity: 10" "${command_log}"