In this way it will be possible to reliably catch any error in the command execution which is not raising an exception to Popen. Change-Id: I4dc15648423f9bb8e8a470d97291dbd065c48eba Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/28847 Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>