Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo", uses=false) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: translateModel(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass") translateModel(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001149/0.001149, allocations: 111.3 kB / 15.23 MB, free: 0.6406 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00121/0.00121, allocations: 194.8 kB / 16.14 MB, free: 6.703 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.54/1.54, allocations: 205.1 MB / 222 MB, free: 4.777 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.626/1.626, allocations: 251.7 MB / 0.5088 GB, free: 3.297 MB / 414.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.001291/0.001291, allocations: 63.91 kB / 0.6216 GB, free: 1.957 MB / 0.5137 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.529/0.5304, allocations: 104.7 MB / 0.7238 GB, free: 13.12 MB / 0.545 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass): time 0.1938/0.7243, allocations: 175.1 MB / 0.8948 GB, free: 13.41 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.007731/0.732, allocations: 4.524 MB / 0.8992 GB, free: 8.867 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0013/0.7335, allocations: 19.88 kB / 0.8992 GB, free: 8.848 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.001184/0.7346, allocations: 314.3 kB / 0.8995 GB, free: 8.539 MB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.003457/0.7381, allocations: 1.183 MB / 0.9007 GB, free: 7.352 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.002119/0.7402, allocations: 0.6386 MB / 0.9013 GB, free: 6.719 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.002618/0.7429, allocations: 2.285 MB / 0.9035 GB, free: 4.43 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0007188/0.7436, allocations: 459.5 kB / 0.9039 GB, free: 3.984 MB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001462/0.7451, allocations: 0.6185 MB / 0.9046 GB, free: 3.363 MB / 0.7169 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001167/0.7463, allocations: 0.5038 MB / 0.905 GB, free: 2.859 MB / 0.7169 GB Notification: Performance of NFPackage.collectConstants: time 8.678e-05/0.7464, allocations: 28 kB / 0.9051 GB, free: 2.832 MB / 0.7169 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002743/0.7491, allocations: 1.465 MB / 0.9065 GB, free: 1.363 MB / 0.7169 GB Notification: Performance of NFScalarize.scalarize: time 0.0002777/0.7494, allocations: 215.3 kB / 0.9067 GB, free: 1.152 MB / 0.7169 GB Notification: Performance of NFVerifyModel.verify: time 0.0004058/0.7498, allocations: 330.3 kB / 0.907 GB, free: 0.8281 MB / 0.7169 GB Notification: Performance of NFConvertDAE.convert: time 0.462/1.212, allocations: 1.331 MB / 0.9083 GB, free: 6.496 MB / 0.7169 GB Notification: Performance of FrontEnd - DAE generated: time 9.658e-06/1.212, allocations: 1.875 kB / 0.9083 GB, free: 6.496 MB / 0.7169 GB Notification: Performance of FrontEnd: time 2.325e-06/1.212, allocations: 0.6875 kB / 0.9083 GB, free: 6.496 MB / 0.7169 GB Notification: Performance of Transformations before backend: time 2.079e-05/1.212, allocations: 0.9375 kB / 0.9083 GB, free: 6.496 MB / 0.7169 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 106 * Number of variables: 106 Notification: Performance of Generate backend data structure: time 0.002094/1.214, allocations: 1.015 MB / 0.9093 GB, free: 5.957 MB / 0.7169 GB Notification: Performance of prepare preOptimizeDAE: time 5.168e-05/1.214, allocations: 8.875 kB / 0.9093 GB, free: 5.957 MB / 0.7169 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001198/1.215, allocations: 173.9 kB / 0.9095 GB, free: 5.922 MB / 0.7169 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0008447/1.216, allocations: 0.5258 MB / 0.91 GB, free: 5.656 MB / 0.7169 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.484e-05/1.216, allocations: 39.62 kB / 0.91 GB, free: 5.656 MB / 0.7169 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.729e-05/1.216, allocations: 41.64 kB / 0.9101 GB, free: 5.656 MB / 0.7169 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0009492/1.217, allocations: 475.7 kB / 0.9105 GB, free: 5.621 MB / 0.7169 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.385e-05/1.217, allocations: 0 / 0.9105 GB, free: 5.621 MB / 0.7169 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.757e-05/1.217, allocations: 18.62 kB / 0.9106 GB, free: 5.621 MB / 0.7169 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.965e-05/1.217, allocations: 15.86 kB / 0.9106 GB, free: 5.621 MB / 0.7169 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009024/1.218, allocations: 423 kB / 0.911 GB, free: 5.617 MB / 0.7169 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.00303/1.221, allocations: 2.045 MB / 0.913 GB, free: 4.609 MB / 0.7169 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005264/1.222, allocations: 289.2 kB / 0.9132 GB, free: 4.578 MB / 0.7169 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003462/1.222, allocations: 183.6 kB / 0.9134 GB, free: 4.57 MB / 0.7169 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002588/1.222, allocations: 190.1 kB / 0.9136 GB, free: 4.383 MB / 0.7169 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.592e-05/1.222, allocations: 40.56 kB / 0.9136 GB, free: 4.34 MB / 0.7169 GB Notification: Performance of pre-optimization done (n=30): time 2.595e-06/1.222, allocations: 0 / 0.9136 GB, free: 4.34 MB / 0.7169 GB Notification: Performance of matching and sorting (n=30): time 0.001737/1.224, allocations: 0.6301 MB / 0.9143 GB, free: 4.176 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.553e-05/1.224, allocations: 59.53 kB / 0.9143 GB, free: 4.109 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0005981/1.225, allocations: 447.6 kB / 0.9147 GB, free: 3.992 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 3.917e-05/1.225, allocations: 32.55 kB / 0.9148 GB, free: 3.961 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.00018/1.225, allocations: 279.1 kB / 0.915 GB, free: 3.82 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001099/1.225, allocations: 110.3 kB / 0.9151 GB, free: 3.75 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001253/1.225, allocations: 68.8 kB / 0.9152 GB, free: 3.73 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 0.0003558/1.226, allocations: 356.9 kB / 0.9155 GB, free: 19.42 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003043/1.226, allocations: 130.7 kB / 0.9157 GB, free: 19.41 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.000356/1.226, allocations: 208.7 kB / 0.9159 GB, free: 19.33 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.000633/1.227, allocations: 330.1 kB / 0.9162 GB, free: 19.28 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.897e-06/1.227, allocations: 0.9062 kB / 0.9162 GB, free: 19.28 MB / 0.7325 GB Notification: Performance of matching and sorting (n=37) (initialization): time 0.0008702/1.228, allocations: 396.1 kB / 0.9166 GB, free: 19.22 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 2.184e-05/1.228, allocations: 5.359 kB / 0.9166 GB, free: 19.22 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.306e-06/1.228, allocations: 1.812 kB / 0.9166 GB, free: 19.22 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.28e-05/1.228, allocations: 3.703 kB / 0.9166 GB, free: 19.22 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003894/1.228, allocations: 69.5 kB / 0.9166 GB, free: 19.21 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.239e-05/1.228, allocations: 7.203 kB / 0.9166 GB, free: 19.21 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006676/1.229, allocations: 60.52 kB / 0.9167 GB, free: 19.19 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.211e-05/1.229, allocations: 14.09 kB / 0.9167 GB, free: 19.19 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.000568/1.23, allocations: 294.2 kB / 0.917 GB, free: 19.11 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0003129/1.23, allocations: 200.5 kB / 0.9172 GB, free: 19.04 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0005429/1.231, allocations: 333.1 kB / 0.9175 GB, free: 18.97 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.665e-06/1.231, allocations: 1.344 kB / 0.9175 GB, free: 18.97 MB / 0.7325 GB Notification: Performance of matching and sorting (n=37) (initialization_lambda0): time 0.0007782/1.231, allocations: 394.3 kB / 0.9179 GB, free: 18.91 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 1.551e-05/1.231, allocations: 5.438 kB / 0.9179 GB, free: 18.91 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.44e-06/1.231, allocations: 4.156 kB / 0.9179 GB, free: 18.91 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 7.314e-06/1.231, allocations: 2.781 kB / 0.9179 GB, free: 18.91 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003372/1.232, allocations: 71.69 kB / 0.918 GB, free: 18.91 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 7.183e-06/1.232, allocations: 2.531 kB / 0.918 GB, free: 18.91 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005871/1.232, allocations: 60.19 kB / 0.918 GB, free: 18.89 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.823e-05/1.232, allocations: 10.55 kB / 0.918 GB, free: 18.89 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 6 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (37): * Single equations (assignments): 37 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0002267/1.233, allocations: 199.8 kB / 0.9182 GB, free: 18.71 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001169/1.233, allocations: 55.72 kB / 0.9183 GB, free: 18.68 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001019/1.234, allocations: 418 kB / 0.9187 GB, free: 18.62 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.811e-06/1.234, allocations: 3.219 kB / 0.9187 GB, free: 18.62 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.055e-06/1.234, allocations: 0.7188 kB / 0.9187 GB, free: 18.62 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0007635/1.235, allocations: 438.7 kB / 0.9191 GB, free: 18.45 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002234/1.237, allocations: 1.137 MB / 0.9202 GB, free: 18.07 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.103e-06/1.237, allocations: 2.031 kB / 0.9202 GB, free: 18.07 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000343/1.237, allocations: 62.66 kB / 0.9203 GB, free: 18.07 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002385/1.237, allocations: 46.61 kB / 0.9203 GB, free: 18.06 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.286e-05/1.238, allocations: 8.031 kB / 0.9203 GB, free: 18.06 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001429/1.239, allocations: 1.434 MB / 0.9217 GB, free: 16.8 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.402e-06/1.239, allocations: 5.688 kB / 0.9217 GB, free: 16.8 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001317/1.24, allocations: 0.7036 MB / 0.9224 GB, free: 16.57 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004665/1.241, allocations: 164.6 kB / 0.9226 GB, free: 16.45 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.572e-05/1.241, allocations: 11.59 kB / 0.9226 GB, free: 16.45 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004925/1.241, allocations: 47.41 kB / 0.9226 GB, free: 16.44 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.333e-05/1.241, allocations: 30.78 kB / 0.9227 GB, free: 16.44 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.247e-05/1.242, allocations: 9.25 kB / 0.9227 GB, free: 16.44 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.0004813/1.242, allocations: 322.3 kB / 0.923 GB, free: 16.35 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.6e-07/1.242, allocations: 0 / 0.923 GB, free: 16.35 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.001292/1.243, allocations: 308 kB / 0.9233 GB, free: 16.31 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 2 (vol.dynBal.U,vol.dynBal.mXi[1]) * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (28): * Single equations (assignments): 27 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0007302/1.244, allocations: 190.1 kB / 0.9234 GB, free: 16.21 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.001527/1.246, allocations: 486.8 kB / 0.9239 GB, free: 16.2 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 6.031e-06/1.246, allocations: 4.188 kB / 0.9239 GB, free: 16.2 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.0008673/1.246, allocations: 288.4 kB / 0.9242 GB, free: 16.09 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001763/1.248, allocations: 311.1 kB / 0.9245 GB, free: 16.07 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002/1.25, allocations: 1.298 MB / 0.9258 GB, free: 15.32 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004542/1.251, allocations: 0.9004 MB / 0.9266 GB, free: 14.61 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.0006712/1.251, allocations: 162.8 kB / 0.9268 GB, free: 14.59 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001186/1.252, allocations: 39.08 kB / 0.9268 GB, free: 14.58 MB / 0.7325 GB Notification: Performance of SimCode: time 9.02e-07/1.252, allocations: 0 / 0.9268 GB, free: 14.58 MB / 0.7325 GB Notification: Performance of Templates: time 0.01991/1.271, allocations: 10.02 MB / 0.9366 GB, free: 14 MB / 0.7325 GB make -j1 -f Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.makefile (rm -f Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.sim & ./Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe 2>&1)