irectl \
--kernel=hello-vmlinux.bin \
--root-drive=hello-rootfs.ext4
INFO[0000] Called startVMM(), setting up a VMM on /root/.firecracker.sock-573867-81
INFO[0000] VMM logging disabled.
INFO[0000] VMM metrics disabled.
ERRO[0000] PutMachineConfiguration returned [PUT /machine-config][204] putMachineConfigurationNoContent
WARN[0000] Failed handler "fcinit.CreateMachine": [PUT /machine-config][400] putMachineConfigurationBadRequest &{FaultMessage:unknown field `smt`, expected one of `vcpu_count`, `mem_size_mib`, `ht_enabled`, `cpu_template` at line 1 column 25}
FATA[0000] Failed to start machine: [PUT /machine-config][400] putMachineConfigurationBadRequest &{FaultMessage:unknown field `smt`, expected one of `vcpu_count`, `mem_size_mib`, `ht_enabled`, `cpu_template` at line 1 column 25}
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