Running external command line application(s). This may print messages to stdout and/or stderr.
The command(s) being run are below. These commands cannot be manually re-run as they will depend on temporary files that no longer exist.

Command: run_dada_single.R /tmp/qiime2-archive-ff9pnfyr/20bf52fd-0be1-4cfc-82c4-1411f8c49dc2/data /tmp/tmpvlhq3iey/output.tsv.biom /tmp/tmpvlhq3iey/track.tsv /tmp/tmpvlhq3iey 120 0 2.0 2 Inf consensus 1.0 1 1000000 NULL 16

R version 3.5.1 (2018-07-02) 
Loading required package: Rcpp
Traceback (most recent call last):
  File "/home/ubuntu/miniconda3/envs/qiime2-2019.4/lib/python3.6/site-packages/q2_dada2/_denoise.py", line 152, in _denoise_single
    run_commands([cmd])
  File "/home/ubuntu/miniconda3/envs/qiime2-2019.4/lib/python3.6/site-packages/q2_dada2/_denoise.py", line 36, in run_commands
    subprocess.run(cmd, check=True)
  File "/home/ubuntu/miniconda3/envs/qiime2-2019.4/lib/python3.6/subprocess.py", line 418, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['run_dada_single.R', '/tmp/qiime2-archive-ff9pnfyr/20bf52fd-0be1-4cfc-82c4-1411f8c49dc2/data', '/tmp/tmpvlhq3iey/output.tsv.biom', '/tmp/tmpvlhq3iey/track.tsv', '/tmp/tmpvlhq3iey', '120', '0', '2.0', '2', 'Inf', 'consensus', '1.0', '1', '1000000', 'NULL', '16']' died with <Signals.SIGKILL: 9>.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ubuntu/miniconda3/envs/qiime2-2019.4/lib/python3.6/site-packages/q2cli/commands.py", line 311, in __call__
    results = action(**arguments)
  File "</home/ubuntu/miniconda3/envs/qiime2-2019.4/lib/python3.6/site-packages/decorator.py:decorator-gen-449>", line 2, in denoise_single
  File "/home/ubuntu/miniconda3/envs/qiime2-2019.4/lib/python3.6/site-packages/qiime2/sdk/action.py", line 231, in bound_callable
    output_types, provenance)
  File "/home/ubuntu/miniconda3/envs/qiime2-2019.4/lib/python3.6/site-packages/qiime2/sdk/action.py", line 365, in _callable_executor_
    output_views = self._callable(**view_args)
  File "/home/ubuntu/miniconda3/envs/qiime2-2019.4/lib/python3.6/site-packages/q2_dada2/_denoise.py", line 187, in denoise_single
    band_size='16')
  File "/home/ubuntu/miniconda3/envs/qiime2-2019.4/lib/python3.6/site-packages/q2_dada2/_denoise.py", line 163, in _denoise_single
    " and stderr to learn more." % e.returncode)
Exception: An error was encountered while running DADA2 in R (return code -9), please inspect stdout and stderr to learn more.