Kneaddata adds "#0/1" to barcode in the header

Infrastructure and utilities KneadData
1

I run keaddata to remove mouse genome from 16S fastq PE reads from mouse lung as follows;

kneaddata --input1 trimmed_255-001_S1_L001_R1_001.fastq --input2 trimmed_255-001_S1_L001_R2_001.fastq -db /Volumes/Aura/bowtie_GRCm39_DB --output kneaddata_output -t 12 --bypass-trim --bypass-trf

Interestingly, there was no contaminating reads that were removed. Anyway, I checked the integrity of _unmatched fastqs and noticed “#0/1” was added to the end of barcodes in the header;

@M02079:179:000000000-JKTGJ:1:1101:16873:1834.1:N:0:ATCACG#0/1
GCAATACGGGAGTGGCAAGCGTTATCCGGAATTATTGGGCGTAAAGCGTCCGCAGGCGGCTTTTCAAGTCTGCTGTTAAAACGTGGAGCTTAACTCCATCATGGCAGTGGAAACTGAAAGGCTTGAGTATGGTAGGGGCAGAGGGAATTCCCGGTGTAGCGGTGAAATGCGTAGATATCGGGAAGAACACCAGTGGCGAAGGCGCTCTGCTGGGCCATTACTGACGCTCATGGACGAAAGCCAGGGGAGC
+
111>>DFAADA1EFEAFFAF0EFEHHH0A0EBGFGHHFHFGGGGHHHGGGGGCEGGGECGGGHHFGEGGHHHHHHHHEFG>GGHGG?GGHHGFHGHFHHHHHHGHHCHHGF1GGHFGGHFEFHHGCFHFDGBGHEFGFC-CAGGGGHGHGGGGGGGGHHFGGGGGHFGHGFGBGEFFFFE@A99EFFFFGBE?FFFE?@@?FF<=@FFFFFFFBFFBFFFFFF/BB-BBAFFF/B@-9AAF-9AE--A-B

Is this a bug or am I doing something wrong ?
readItAndKeep.txt (674 Bytes)