ci: avoid making copies when collecting logs, misc. script fixes

Author: kwvg

ci/dash/build_src.sh

@@ -77,7 +77,7 @@ if [ "${RUN_TIDY}" = "true" ]; then
     "src/rpc/signmessage.cpp" \
     -p . "${MAKEJOBS}" \
     -- -Xiwyu --cxx17ns -Xiwyu --mapping_file="${BASE_ROOT_DIR}/contrib/devtools/iwyu/bitcoin.core.imp" \
-    |& tee "/tmp/iwyu_ci.out"
+    2>&1 | tee "/tmp/iwyu_ci.out"
   cd src
   fix_includes.py --nosafe_headers < /tmp/iwyu_ci.out
   git --no-pager diff

ci/dash/slim-workspace.sh

@@ -32,7 +32,7 @@ TARGETS=(
   "build-ci/dashcore-${BUILD_TARGET}/src/qt/qrc_dash_locale.cpp"
 )
 
-# Delete directories we don't need
+# Delete what we don't need
 for target in "${TARGETS[@]}"
 do
   if [[ -d "${target}" ]] || [[ -f "${target}" ]]; then

ci/dash/test_integrationtests.sh

@@ -66,7 +66,7 @@ if [ "$BASEDIR" != "" ]; then
     for f in $LOGFILES; do
       d2="testlogs/$d/$(dirname "$f")"
       mkdir -p "$d2"
-      cp "testdatadirs/$BASEDIR/$d/$f" "$d2/"
+      mv "testdatadirs/$BASEDIR/$d/$f" "$d2/"
     done
   done
 fi