Hi Matthew, sorry form my late reply. I'm using qiime2-2019.10 and I tried to re-run with --verbose and I obtain this result
(qiime2-2019.1) [lcarraro@p05-64gb E18]$ qiime cutadapt trim-paired --i-demultiplexed-sequences demux-paired-end_E18.qza --p-front-f TCCTACGGGAGGCAGCAGT --p-front-r GGACTACCAGGGTATCTAATCCTGTT --o-trimmed-sequences cutadapt_demux_E18.qza --verbose
Running external command line application. This may print messages to stdout and/or stderr.
The commands to be run are below. These commands cannot be manually re-run as they will depend on temporary files that no longer exist.
Command: cutadapt --cores 1 --error-rate 0.1 --times 1 --overlap 3 -o /tmp/q2-CasavaOneEightSingleLanePerSampleDirFmt-2drh5ekh/218191F208616_S1_L001_R1_001.fastq.gz -p /tmp/q2-CasavaOneEightSingleLanePerSampleDirFmt-2drh5ekh/218191F208616_S1_L001_R2_001.fastq.gz --front TCCTACGGGAGGCAGCAGT -G GGACTACCAGGGTATCTAATCCTGTT /tmp/qiime2-archive-eutor2cs/dc173c21-0ae9-496a-a8e8-d2e091488c1d/data/218191F208616_S1_L001_R1_001.fastq.gz /tmp/qiime2-archive-eutor2cs/dc173c21-0ae9-496a-a8e8-d2e091488c1d/data/218191F208616_S1_L001_R2_001.fastq.gz
Traceback (most recent call last):
File "/opt/anaconda3/bin/cutadapt", line 7, in <module>
from cutadapt.__main__ import main
ModuleNotFoundError: No module named 'cutadapt'
Traceback (most recent call last):
File "/opt/anaconda3/envs/qiime2-2019.1/lib/python3.6/site-packages/q2cli/commands.py", line 274, in __call__
results = action(**arguments)
File "</opt/anaconda3/envs/qiime2-2019.1/lib/python3.6/site-packages/decorator.py:decorator-gen-448>", line 2, in trim_paired
File "/opt/anaconda3/envs/qiime2-2019.1/lib/python3.6/site-packages/qiime2/sdk/action.py", line 231, in bound_callable
output_types, provenance)
File "/opt/anaconda3/envs/qiime2-2019.1/lib/python3.6/site-packages/qiime2/sdk/action.py", line 365, in _callable_executor_
output_views = self._callable(**view_args)
File "/opt/anaconda3/envs/qiime2-2019.1/lib/python3.6/site-packages/q2_cutadapt/_trim.py", line 174, in trim_paired
run_commands(cmds)
File "/opt/anaconda3/envs/qiime2-2019.1/lib/python3.6/site-packages/q2_cutadapt/_trim.py", line 30, in run_commands
subprocess.run(cmd, check=True)
File "/opt/anaconda3/envs/qiime2-2019.1/lib/python3.6/subprocess.py", line 418, in run
output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['cutadapt', '--cores', '1', '--error-rate', '0.1', '--times', '1', '--overlap', '3', '-o', '/tmp/q2-CasavaOneEightSingleLanePerSampleDirFmt-2drh5ekh/218191F208616_S1_L001_R1_001.fastq.gz', '-p', '/tmp/q2-CasavaOneEightSingleLanePerSampleDirFmt-2drh5ekh/218191F208616_S1_L001_R2_001.fastq.gz', '--front', 'TCCTACGGGAGGCAGCAGT', '-G', 'GGACTACCAGGGTATCTAATCCTGTT', '/tmp/qiime2-archive-eutor2cs/dc173c21-0ae9-496a-a8e8-d2e091488c1d/data/218191F208616_S1_L001_R1_001.fastq.gz', '/tmp/qiime2-archive-eutor2cs/dc173c21-0ae9-496a-a8e8-d2e091488c1d/data/218191F208616_S1_L001_R2_001.fastq.gz']' returned non-zero exit status 1.
Plugin error from cutadapt:
Command '['cutadapt', '--cores', '1', '--error-rate', '0.1', '--times', '1', '--overlap', '3', '-o', '/tmp/q2-CasavaOneEightSingleLanePerSampleDirFmt-2drh5ekh/218191F208616_S1_L001_R1_001.fastq.gz', '-p', '/tmp/q2-CasavaOneEightSingleLanePerSampleDirFmt-2drh5ekh/218191F208616_S1_L001_R2_001.fastq.gz', '--front', 'TCCTACGGGAGGCAGCAGT', '-G', 'GGACTACCAGGGTATCTAATCCTGTT', '/tmp/qiime2-archive-eutor2cs/dc173c21-0ae9-496a-a8e8-d2e091488c1d/data/218191F208616_S1_L001_R1_001.fastq.gz', '/tmp/qiime2-archive-eutor2cs/dc173c21-0ae9-496a-a8e8-d2e091488c1d/data/218191F208616_S1_L001_R2_001.fastq.gz']' returned non-zero exit status 1.
See above for debug info.