diff --git a/build_library/extract-initramfs-from-vmlinuz.sh b/build_library/extract-initramfs-from-vmlinuz.sh
index 50fbc9fea0..83f2137b9d 100755
--- a/build_library/extract-initramfs-from-vmlinuz.sh
+++ b/build_library/extract-initramfs-from-vmlinuz.sh
@@ -29,8 +29,12 @@ try_extract() {
     # cpio can do strange things when given garbage, so do a basic check.
     [[ $(head -c6 "$1") == 070701 ]] || return 0
 
-    # There may be multiple concatenated archives so try cpio till it fails.
-    while cpio --quiet --extract --make-directories --directory="${out}/rootfs-${ROOTFS_IDX}" --nonmatching 'dev/*' 2>/dev/null; do
+    while {
+        # cpio needs the directory to exist first. Fail if it's already there.
+        { mkdir "${out}/rootfs-${ROOTFS_IDX}" || return $?; } &&
+        # There may be multiple concatenated archives so try cpio till it fails.
+        cpio --quiet --extract --make-directories --directory="${out}/rootfs-${ROOTFS_IDX}" --nonmatching 'dev/*' 2>/dev/null
+    }; do
         ROOTFS_IDX=$(( ROOTFS_IDX + 1 ))
     done < "$1"
 
@@ -49,7 +53,7 @@ if [[ ! -s "${image}" ]]; then
 fi
 mkdir -p "${out}"
 
-tmp=$(mktemp --directory eifv-XXXXXX)
+tmp=$(mktemp --directory -t eifv-XXXXXX)
 trap 'rm -rf -- "${tmp}"' EXIT
 ROOTFS_IDX=0
 
diff --git a/build_library/reports_util.sh b/build_library/reports_util.sh
index 0873d9e960..b8548a9415 100644
--- a/build_library/reports_util.sh
+++ b/build_library/reports_util.sh
@@ -33,6 +33,7 @@ write_contents() {
     # %l - symlink target (empty if not a symlink)
     sudo TZ=UTC find -printf \
         '%M %2n %-7u %-7g %7s %TY-%Tm-%Td %TH:%TM ./%P -> %l\n' \
+        | sort --key=8 \
         | sed -e 's/ -> $//' >"${output}"
     popd >/dev/null
 }
@@ -57,7 +58,8 @@ write_contents_with_technical_details() {
     # %s - size in bytes
     # %P - file's path
     sudo find -printf \
-        '%M %D %i %n %s ./%P\n' >"${output}"
+        '%M %D %i %n %s ./%P\n' \
+        | sort --key=6 >"${output}"
     popd >/dev/null
 }