diff --git a/codearchiver-bot b/codearchiver-bot
index a05cd67..cbe08d2 100755
--- a/codearchiver-bot
+++ b/codearchiver-bot
@@ -140,9 +140,6 @@ function respond {
 				continue
 			fi
 
-			# Marker for finding new files
-			touch '.filemarker'
-
 			# Find nonexistent filename for log file (*not* concurrency-safe!)
 			logbasename="$(date +%Y%m%dT%H%M%SZ)_${singlejobid}"
 			if [[ -e "${logbasename}_codearchiver.log" ]]; then
@@ -154,10 +151,13 @@ function respond {
 				logbasename="${logbasename}_coll${i}"
 			fi
 			logname="${logbasename}_codearchiver.log"
+			artefactsname="${logbasename}_codearchiver_artefacts.txt"
 
 			# Run codearchiver, duplicating WARNINGs and higher in the bot output
-			log "Running ${url}, logging into ${logname}"
-			codearchiver --verbose "${url}" 2> >(tee "${logname}" | grep -Fv -e '  INFO  ' | log_loop "From codearchiver ${singlejobid}: ")
+			log "Running ${url} (${singlejobid}), logging into ${logname}"
+			codearchiver --verbose --write-artefacts-fd-3 "${url}" \
+				2> >(tee "${logname}" | grep -Fv -e '  INFO  ' | log_loop "From codearchiver ${singlejobid}: ") \
+				3> >(tee "${artefactsname}" | log_loop "New artefacts from codearchiver ${singlejob}: ")
 			status="$?"
 			log "codearchiver ${url} finished with status code ${status}"
 			statuscodes+=("${status}")
@@ -172,29 +172,23 @@ function respond {
 				logname="${logname}.zst"
 			fi
 
-			# Collect new files, write artefacts file, move everything but the log file to ./failed/ if codearchiver exited non-zero
-			readarray -d $'\0' -t tmpnewfiles < <(find -maxdepth 1 -type f -newer '.filemarker' -print0 2> >(log_loop 'find new files err: ') | sed -z 's,^\./,,')
-			readarray -d $'\0' -t artefacts < <(for file in "${tmpnewfiles[@]}"; do if [[ "${file}" != "${logname}" ]]; then printf '%s\0' "${file}"; fi; done)
-			artefactsname="${logbasename}_codearchiver_artefacts.txt"
-			for file in "${artefacts[@]}"; do
-				printf '%s\n' "${file}"
-			done >"${artefactsname}"
+			# Move everything but the log file to ./failed/ if codearchiver exited non-zero
+			readarray -t artefacts <"${artefactsname}"
 			if [[ "${status}" -ne 0 ]]; then
 				msg="$(printf 'Moving artefact files'; printf ' %q' "${artefacts[@]}" "${artefactsname}"; printf ' from non-zero exit for job %s to ./failed/\n' "${singlejobid}";)"
 				log "${msg}"
 				mkdir --parents ./failed/
 				mv --verbose -- "${artefacts[@]}" "${artefactsname}" ./failed/ 2> >(log_loop 'mv err: ') | log_loop 'mv out: '
-				newfiles+=("${logname}")
-				newfilejobindices+=("${i}")
 			else
-				for file in "${tmpnewfiles[@]}"; do
-					log "New file from job ${singlejobid}: ${file}"
+				for file in "${artefacts[@]}"; do
 					newfiles+=("${file}")
 					newfilejobindices+=("${i}")
 				done
 				newfiles+=("${artefactsname}")
 				newfilejobindices+=("${i}")
 			fi
+			newfiles+=("${logname}")
+			newfilejobindices+=("${i}")
 
 			# For individual jobs, tell the user about warnings and success/failure
 			if [[ "${singlejobid}" != *_* ]]; then