m = Model.new
spd_1 = CoilCoolingDXCurveFitSpeed.new(m)
op_mode_base = CoilCoolingDXCurveFitOperatingMode.new(m)
performance_base = CoilCoolingDXCurveFitPerformance.new(m, op_mode_base)
cooling_coil_dx_1 = CoilCoolingDX.new(m, performance_base)

# Ok
cooling_coil_dx_1.clone(m)

m2 = Model.new
# Crash
cooling_coil_dx_1.clone(m2)

[utilities.idf.Workspace] <-1> Unable to add cloned objects to Workspace. The validity report is: 
The collection is INVALID at strictness level 'Draft', because of the errors:
Object     level data error of type NameConflict      .
Error pertains to an object of type 'OS:Coil:Cooling:DX:CurveFit:OperatingMode', named 'Coil Cooling DX Curve Fit Operating Mode 1'.
Additional information about the error type: two objects of the same type or with overlapping references also have the same name.
[utilities.idf.Workspace] <1> Unable to add objectsToAdd and objectsToInsert to their own Workspace as an intermediate step.
[BOOST_ASSERT] <2> Assertion result.size() > 0u failed on line 602 of virtual openstudio::model::ModelObject openstudio::model::detail::ModelObject_Impl::clone(openstudio::model::Model) const in file /srv/jenkins/openstudio/git/nightly/ubuntu_2004/src/model/ModelObject.cpp.
[BOOST_ASSERT] <2> Assertion result.size() > 0u failed on line 602 of virtual openstudio::model::ModelObject openstudio::model::detail::ModelObject_Impl::clone(openstudio::model::Model) const in file /srv/jenkins/openstudio/git/nightly/ubuntu_2004/src/model/ModelObject.cpp.
(pry):8: [BUG] Segmentation fault at 0x0000000000000008
ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [x86_64-linux]

-- Control frame information -----------------------------------------------
c:0026 p:---- s:0136 e:000135 CFUNC  :clone
c:0025 p:0007 s:0131 e:000130 EVAL   (pry):8 [FINISH]
c:0024 p:---- s:0128 e:000127 CFUNC  :eval
c:0023 p:0042 s:0121 e:000120 METHOD /usr/share/rvm/gems/ruby-2.7.2/gems/pry-0.14.1/lib/pry/pry_instance.rb:290
c:0022 p:0240 s:0115 e:000114 METHOD /usr/share/rvm/gems/ruby-2.7.2/gems/pry-0.14.1/lib/pry/pry_instance.rb:659
c:0021 p:0010 s:0104 e:000103 BLOCK  /usr/share/rvm/gems/ruby-2.7.2/gems/pry-0.14.1/lib/pry/pry_instance.rb:261 [FINISH]