diff --git a/ci/test/06_script_b.sh b/ci/test/06_script_b.sh
index fa6dced5209..f5e2d59a37f 100755
--- a/ci/test/06_script_b.sh
+++ b/ci/test/06_script_b.sh
@@ -12,43 +12,42 @@ if [ "$CI_OS_NAME" == "macos" ]; then
   top -l 1 -s 0 | awk ' /PhysMem/ {print}'
   echo "Number of CPUs: $(sysctl -n hw.logicalcpu)"
 else
-  CI_EXEC free -m -h
-  CI_EXEC echo "Number of CPUs \(nproc\):" \$\(nproc\)
-  CI_EXEC echo "$(lscpu | grep Endian)"
+  free -m -h
+  echo "Number of CPUs \(nproc\):" \$\(nproc\)
+  lscpu | grep Endian
 fi
-CI_EXEC echo "Free disk space:"
-CI_EXEC df -h
+echo "Free disk space:"
+df -h
 
 if [ "$RUN_FUZZ_TESTS" = "true" ]; then
   export DIR_FUZZ_IN=${DIR_QA_ASSETS}/fuzz_seed_corpus/
   if [ ! -d "$DIR_FUZZ_IN" ]; then
-    CI_EXEC git clone --depth=1 https://github.com/bitcoin-core/qa-assets "${DIR_QA_ASSETS}"
+    git clone --depth=1 https://github.com/bitcoin-core/qa-assets "${DIR_QA_ASSETS}"
   fi
 elif [ "$RUN_UNIT_TESTS" = "true" ] || [ "$RUN_UNIT_TESTS_SEQUENTIAL" = "true" ]; then
   export DIR_UNIT_TEST_DATA=${DIR_QA_ASSETS}/unit_test_data/
   if [ ! -d "$DIR_UNIT_TEST_DATA" ]; then
-    CI_EXEC mkdir -p "$DIR_UNIT_TEST_DATA"
-    CI_EXEC curl --location --fail https://github.com/bitcoin-core/qa-assets/raw/main/unit_test_data/script_assets_test.json -o "${DIR_UNIT_TEST_DATA}/script_assets_test.json"
+    mkdir -p "$DIR_UNIT_TEST_DATA"
+    curl --location --fail https://github.com/bitcoin-core/qa-assets/raw/main/unit_test_data/script_assets_test.json -o "${DIR_UNIT_TEST_DATA}/script_assets_test.json"
   fi
 fi
 
-CI_EXEC mkdir -p "${BASE_SCRATCH_DIR}/sanitizer-output/"
+mkdir -p "${BASE_SCRATCH_DIR}/sanitizer-output/"
 
 if [ "$USE_BUSY_BOX" = "true" ]; then
   echo "Setup to use BusyBox utils"
   # tar excluded for now because it requires passing in the exact archive type in ./depends (fixed in later BusyBox version)
   # ar excluded for now because it does not recognize the -q option in ./depends (unknown if fixed)
-  # shellcheck disable=SC1010
-  CI_EXEC for util in \$\(busybox --list \| grep -v "^ar$" \| grep -v "^tar$" \)\; do ln -s \$\(command -v busybox\) "${BINS_SCRATCH_DIR}/\$util"\; done
+  for util in $(busybox --list | grep -v "^ar$" | grep -v "^tar$" ); do ln -s "$(command -v busybox)" "${BINS_SCRATCH_DIR}/$util"; done
   # Print BusyBox version
-  CI_EXEC patch --help
+  patch --help
 fi
 
 # Make sure default datadir does not exist and is never read by creating a dummy file
 if [ "$CI_OS_NAME" == "macos" ]; then
   echo > "${HOME}/Library/Application Support/Bitcoin"
 else
-  CI_EXEC echo \> \$HOME/.bitcoin
+  echo > "${HOME}/.bitcoin"
 fi
 
 if [ -z "$NO_DEPENDS" ]; then
@@ -60,10 +59,10 @@ if [ -z "$NO_DEPENDS" ]; then
   else
     SHELL_OPTS="CONFIG_SHELL="
   fi
-  CI_EXEC "$SHELL_OPTS" make "$MAKEJOBS" -C depends HOST="$HOST" "$DEP_OPTS" LOG=1
+  bash -c "$SHELL_OPTS make $MAKEJOBS -C depends HOST=$HOST $DEP_OPTS LOG=1"
 fi
 if [ "$DOWNLOAD_PREVIOUS_RELEASES" = "true" ]; then
-  CI_EXEC test/get_previous_releases.py -b -t "$PREVIOUS_RELEASES_DIR"
+  test/get_previous_releases.py -b -t "$PREVIOUS_RELEASES_DIR"
 fi
 
 BITCOIN_CONFIG_ALL="--enable-suppress-external-warnings --disable-dependency-tracking"
@@ -74,46 +73,46 @@ if [ -z "$NO_WERROR" ]; then
   BITCOIN_CONFIG_ALL="${BITCOIN_CONFIG_ALL} --enable-werror"
 fi
 
-CI_EXEC "ccache --zero-stats --max-size=$CCACHE_SIZE"
+ccache --zero-stats --max-size="${CCACHE_SIZE}"
 PRINT_CCACHE_STATISTICS="ccache --version | head -n 1 && ccache --show-stats"
 
 if [ -n "$ANDROID_TOOLS_URL" ]; then
-  CI_EXEC make distclean || true
-  CI_EXEC ./autogen.sh
-  CI_EXEC ./configure "$BITCOIN_CONFIG_ALL" "$BITCOIN_CONFIG" || ( (CI_EXEC cat config.log) && false)
-  CI_EXEC "make $MAKEJOBS && cd src/qt && ANDROID_HOME=${ANDROID_HOME} ANDROID_NDK_HOME=${ANDROID_NDK_HOME} make apk"
-  CI_EXEC "${PRINT_CCACHE_STATISTICS}"
+  make distclean || true
+  ./autogen.sh
+  bash -c "./configure $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG" || ( (cat config.log) && false)
+  make "${MAKEJOBS}" && cd src/qt && ANDROID_HOME=${ANDROID_HOME} ANDROID_NDK_HOME=${ANDROID_NDK_HOME} make apk
+  bash -c "${PRINT_CCACHE_STATISTICS}"
   exit 0
 fi
 
 BITCOIN_CONFIG_ALL="${BITCOIN_CONFIG_ALL} --enable-external-signer --prefix=$BASE_OUTDIR"
 
 if [ -n "$CONFIG_SHELL" ]; then
-  CI_EXEC "$CONFIG_SHELL" -c "./autogen.sh"
+  "$CONFIG_SHELL" -c "./autogen.sh"
 else
-  CI_EXEC ./autogen.sh
+  ./autogen.sh
 fi
 
-CI_EXEC mkdir -p "${BASE_BUILD_DIR}"
-export P_CI_DIR="${BASE_BUILD_DIR}"
+mkdir -p "${BASE_BUILD_DIR}"
+cd "${BASE_BUILD_DIR}"
 
-CI_EXEC "${BASE_ROOT_DIR}/configure" --cache-file=config.cache "$BITCOIN_CONFIG_ALL" "$BITCOIN_CONFIG" || ( (CI_EXEC cat config.log) && false)
+bash -c "${BASE_ROOT_DIR}/configure --cache-file=config.cache $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG" || ( (cat config.log) && false)
 
-CI_EXEC make distdir VERSION="$HOST"
+make distdir VERSION="$HOST"
 
-export P_CI_DIR="${BASE_BUILD_DIR}/bitcoin-$HOST"
+cd "${BASE_BUILD_DIR}/bitcoin-$HOST"
 
-CI_EXEC ./configure --cache-file=../config.cache "$BITCOIN_CONFIG_ALL" "$BITCOIN_CONFIG" || ( (CI_EXEC cat config.log) && false)
+bash -c "./configure --cache-file=../config.cache $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG" || ( (cat config.log) && false)
 
 set -o errtrace
-trap 'CI_EXEC "cat ${BASE_SCRATCH_DIR}/sanitizer-output/* 2> /dev/null"' ERR
+trap 'bash -c "cat ${BASE_SCRATCH_DIR}/sanitizer-output/* 2> /dev/null"' ERR
 
 if [[ ${USE_MEMORY_SANITIZER} == "true" ]]; then
   # MemorySanitizer (MSAN) does not support tracking memory initialization done by
   # using the Linux getrandom syscall. Avoid using getrandom by undefining
   # HAVE_SYS_GETRANDOM. See https://github.com/google/sanitizers/issues/852 for
   # details.
-  CI_EXEC 'grep -v HAVE_SYS_GETRANDOM src/config/bitcoin-config.h > src/config/bitcoin-config.h.tmp && mv src/config/bitcoin-config.h.tmp src/config/bitcoin-config.h'
+  grep -v HAVE_SYS_GETRANDOM src/config/bitcoin-config.h > src/config/bitcoin-config.h.tmp && mv src/config/bitcoin-config.h.tmp src/config/bitcoin-config.h
 fi
 
 if [[ "${RUN_TIDY}" == "true" ]]; then
@@ -121,11 +120,11 @@ if [[ "${RUN_TIDY}" == "true" ]]; then
   MAYBE_TOKEN="--"
 fi
 
-CI_EXEC "${MAYBE_BEAR}" "${MAYBE_TOKEN}" make "$MAKEJOBS" "$GOAL" || ( echo "Build failure. Verbose build follows." && CI_EXEC make "$GOAL" V=1 ; false )
+bash -c "${MAYBE_BEAR} ${MAYBE_TOKEN} make $MAKEJOBS $GOAL" || ( echo "Build failure. Verbose build follows." && make "$GOAL" V=1 ; false )
 
-CI_EXEC "${PRINT_CCACHE_STATISTICS}"
-CI_EXEC du -sh "${DEPENDS_DIR}"/*/
-CI_EXEC du -sh "${PREVIOUS_RELEASES_DIR}"
+bash -c "${PRINT_CCACHE_STATISTICS}"
+du -sh "${DEPENDS_DIR}"/*/
+du -sh "${PREVIOUS_RELEASES_DIR}"
 
 if [[ $HOST = *-mingw32 ]]; then
   # Generate all binaries, so that they can be wrapped