Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_3.0.0_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo", uses=false) 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 3.0.0/package.mo", uses=false) Using package Buildings with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 3.0.0/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) Using package Modelica_StateGraph2 with version 2.0.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo) Running command: translateModel(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_3.0.0_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass") translateModel(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_3.0.0_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass") [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo:257:38-257:110:writable] Warning: The file was not encoded in UTF-8: "

An important practical aspect of state machines is the abilit...". Defaulting to 7-bit ASCII with unknown characters replaced by '?'. To change encoding when loading a file: loadFile(encoding="ISO-XXXX-YY"). To change it in a package: add a file package.encoding at the top-level. Note: The Modelica Language Specification only allows files encoded in UTF-8. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo:761:36-761:108:writable] Warning: The file was not encoded in UTF-8: "

The Modelica_StateGraph2 library is described in detail in (O...". Defaulting to 7-bit ASCII with unknown characters replaced by '?'. To change encoding when loading a file: loadFile(encoding="ISO-XXXX-YY"). To change it in a package: add a file package.encoding at the top-level. Note: The Modelica Language Specification only allows files encoded in UTF-8. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo:1435:36-1435:108:writable] Warning: The file was not encoded in UTF-8: "

Main Authors:

SCode: time 0.1928/0.1949, allocations: 80.83 MB / 0.6706 GB, free: 2.027 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass): time 0.6362/0.8312, allocations: 176.9 MB / 0.8434 GB, free: 3.441 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.00671/0.838, allocations: 3.826 MB / 0.8472 GB, free: 336 kB / 0.6075 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001135/0.8391, allocations: 26.78 kB / 0.8472 GB, free: 324 kB / 0.6075 GB Notification: Performance of NFTyping.typeComponents: time 0.001541/0.8407, allocations: 460.2 kB / 0.8476 GB, free: 15.95 MB / 0.6231 GB Notification: Performance of NFTyping.typeBindings: time 0.004391/0.8451, allocations: 1.166 MB / 0.8488 GB, free: 15.04 MB / 0.6231 GB Notification: Performance of NFTyping.typeClassSections: time 0.002502/0.8476, allocations: 0.8185 MB / 0.8496 GB, free: 14.43 MB / 0.6231 GB Notification: Performance of NFFlatten.flatten: time 0.003421/0.8511, allocations: 2.005 MB / 0.8515 GB, free: 13.29 MB / 0.6231 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001172/0.8523, allocations: 0.612 MB / 0.8521 GB, free: 12.91 MB / 0.6231 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00245/0.8547, allocations: 0.9077 MB / 0.853 GB, free: 12.37 MB / 0.6231 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001909/0.8567, allocations: 0.5598 MB / 0.8535 GB, free: 12.05 MB / 0.6231 GB Notification: Performance of NFPackage.collectConstants: time 0.0002755/0.857, allocations: 71.53 kB / 0.8536 GB, free: 12.05 MB / 0.6231 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002288/0.8593, allocations: 0.9656 MB / 0.8546 GB, free: 11.53 MB / 0.6231 GB Notification: Performance of NFScalarize.scalarize: time 0.0005162/0.8598, allocations: 321.2 kB / 0.8549 GB, free: 11.32 MB / 0.6231 GB Notification: Performance of NFVerifyModel.verify: time 0.0009783/0.8608, allocations: 442.8 kB / 0.8553 GB, free: 11.04 MB / 0.6231 GB Notification: Performance of NFConvertDAE.convert: time 0.002739/0.8635, allocations: 1.418 MB / 0.8567 GB, free: 10.12 MB / 0.6231 GB Notification: Performance of FrontEnd - DAE generated: time 2.04e-05/0.8636, allocations: 0 / 0.8567 GB, free: 10.12 MB / 0.6231 GB Notification: Performance of FrontEnd: time 1.833e-06/0.8636, allocations: 3.938 kB / 0.8567 GB, free: 10.12 MB / 0.6231 GB Notification: Performance of Transformations before backend: time 4.289e-05/0.8636, allocations: 0 / 0.8567 GB, free: 10.12 MB / 0.6231 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 135 * Number of variables: 135 Notification: Performance of Generate backend data structure: time 0.002466/0.8661, allocations: 1.106 MB / 0.8578 GB, free: 9.246 MB / 0.6231 GB Notification: Performance of prepare preOptimizeDAE: time 4.758e-05/0.8662, allocations: 13.55 kB / 0.8578 GB, free: 9.242 MB / 0.6231 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001141/0.8673, allocations: 159.6 kB / 0.8579 GB, free: 9.172 MB / 0.6231 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001155/0.8685, allocations: 0.5767 MB / 0.8585 GB, free: 8.699 MB / 0.6231 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.163e-05/0.8685, allocations: 40 kB / 0.8585 GB, free: 8.684 MB / 0.6231 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001181/0.8687, allocations: 58.25 kB / 0.8586 GB, free: 8.664 MB / 0.6231 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001402/0.8701, allocations: 0.6284 MB / 0.8592 GB, free: 8.301 MB / 0.6231 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.002e-05/0.8701, allocations: 4 kB / 0.8592 GB, free: 8.297 MB / 0.6231 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.261e-05/0.8702, allocations: 20.88 kB / 0.8592 GB, free: 8.281 MB / 0.6231 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.277e-05/0.8702, allocations: 18.94 kB / 0.8592 GB, free: 8.281 MB / 0.6231 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001256/0.8715, allocations: 0.5386 MB / 0.8598 GB, free: 8.023 MB / 0.6231 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 0.004222/0.8757, allocations: 2.467 MB / 0.8622 GB, free: 5.648 MB / 0.6231 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007427/0.8765, allocations: 310.3 kB / 0.8625 GB, free: 5.34 MB / 0.6231 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002866/0.8768, allocations: 156.8 kB / 0.8626 GB, free: 5.184 MB / 0.6231 GB Notification: Performance of preOpt evalFunc (simulation): time 3.997e-05/0.8768, allocations: 4 kB / 0.8626 GB, free: 5.18 MB / 0.6231 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.917e-05/0.8769, allocations: 42.5 kB / 0.8627 GB, free: 5.129 MB / 0.6231 GB Notification: Performance of pre-optimization done (n=27): time 2.575e-06/0.8769, allocations: 4 kB / 0.8627 GB, free: 5.125 MB / 0.6231 GB Notification: Performance of matching and sorting (n=27): time 0.001959/0.8789, allocations: 0.6397 MB / 0.8633 GB, free: 4.457 MB / 0.6231 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.208e-05/0.8789, allocations: 55.41 kB / 0.8633 GB, free: 4.391 MB / 0.6231 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.000702/0.8796, allocations: 0.5809 MB / 0.8639 GB, free: 3.801 MB / 0.6231 GB Notification: Performance of collectPreVariables (initialization): time 5.99e-05/0.8797, allocations: 33.7 kB / 0.8639 GB, free: 3.762 MB / 0.6231 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002529/0.8799, allocations: 335.6 kB / 0.8643 GB, free: 3.43 MB / 0.6231 GB Notification: Performance of collectInitialBindings (initialization): time 9.565e-05/0.8801, allocations: 94.66 kB / 0.8644 GB, free: 3.336 MB / 0.6231 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001668/0.8802, allocations: 85.5 kB / 0.8644 GB, free: 3.246 MB / 0.6231 GB Notification: Performance of setup shared object (initialization): time 0.0001542/0.8804, allocations: 362.8 kB / 0.8648 GB, free: 2.883 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000331/0.8807, allocations: 156.8 kB / 0.8649 GB, free: 2.727 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.000389/0.8811, allocations: 246.1 kB / 0.8652 GB, free: 2.449 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006364/0.8818, allocations: 367.9 kB / 0.8655 GB, free: 2.066 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.306e-06/0.8818, allocations: 0 / 0.8655 GB, free: 2.066 MB / 0.6231 GB Notification: Performance of matching and sorting (n=44) (initialization): time 0.0008978/0.8827, allocations: 484.1 kB / 0.866 GB, free: 1.586 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 1.73e-05/0.8827, allocations: 4 kB / 0.866 GB, free: 1.582 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.767e-06/0.8828, allocations: 4 kB / 0.866 GB, free: 1.578 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.453e-05/0.8828, allocations: 7.938 kB / 0.866 GB, free: 1.57 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004018/0.8832, allocations: 84.11 kB / 0.8661 GB, free: 1.488 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.205e-05/0.8832, allocations: 8 kB / 0.8661 GB, free: 1.48 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005954/0.8838, allocations: 59.55 kB / 0.8661 GB, free: 1.422 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.651e-05/0.8839, allocations: 15.98 kB / 0.8662 GB, free: 1.406 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0004957/0.8844, allocations: 320 kB / 0.8665 GB, free: 1.09 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0003467/0.8847, allocations: 242.8 kB / 0.8667 GB, free: 0.8164 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0005621/0.8853, allocations: 346.5 kB / 0.867 GB, free: 464 kB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.885e-06/0.8853, allocations: 3.938 kB / 0.867 GB, free: 460 kB / 0.6231 GB Notification: Performance of matching and sorting (n=44) (initialization_lambda0): time 0.0008509/0.8862, allocations: 456.6 kB / 0.8675 GB, free: 15.99 MB / 0.6387 GB Notification: Performance of prepare postOptimizeDAE: time 1.514e-05/0.8862, allocations: 8 kB / 0.8675 GB, free: 15.98 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.312e-06/0.8862, allocations: 1.75 kB / 0.8675 GB, free: 15.98 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (initialization): time 6.733e-06/0.8862, allocations: 4 kB / 0.8675 GB, free: 15.98 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003559/0.8866, allocations: 87.78 kB / 0.8676 GB, free: 15.9 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.396e-06/0.8866, allocations: 11.88 kB / 0.8676 GB, free: 15.89 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005713/0.8872, allocations: 47.59 kB / 0.8676 GB, free: 15.84 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.492e-05/0.8872, allocations: 16.09 kB / 0.8676 GB, free: 15.82 MB / 0.6387 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 8 * 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 (44): * Single equations (assignments): 44 * 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 0.0002068/0.8874, allocations: 204.2 kB / 0.8678 GB, free: 15.62 MB / 0.6387 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001228/0.8875, allocations: 59.34 kB / 0.8679 GB, free: 15.56 MB / 0.6387 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.000145/0.8877, allocations: 65.59 kB / 0.8679 GB, free: 15.49 MB / 0.6387 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.641e-06/0.8877, allocations: 4 kB / 0.8679 GB, free: 15.49 MB / 0.6387 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.101e-05/0.8877, allocations: 0 / 0.8679 GB, free: 15.49 MB / 0.6387 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0007893/0.8885, allocations: 433.1 kB / 0.8684 GB, free: 15.03 MB / 0.6387 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001668/0.8902, allocations: 1.036 MB / 0.8694 GB, free: 13.93 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.639e-05/0.8902, allocations: 8.047 kB / 0.8694 GB, free: 13.92 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003046/0.8905, allocations: 59.91 kB / 0.8694 GB, free: 13.86 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002263/0.8908, allocations: 40.83 kB / 0.8695 GB, free: 13.82 MB / 0.6387 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.518e-05/0.8908, allocations: 9.109 kB / 0.8695 GB, free: 13.81 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001347/0.8922, allocations: 1.528 MB / 0.871 GB, free: 12.14 MB / 0.6387 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.713e-06/0.8922, allocations: 0 / 0.871 GB, free: 12.14 MB / 0.6387 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001183/0.8934, allocations: 0.674 MB / 0.8716 GB, free: 11.45 MB / 0.6387 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000295/0.8937, allocations: 196.4 kB / 0.8718 GB, free: 11.23 MB / 0.6387 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.544e-05/0.8938, allocations: 4 kB / 0.8718 GB, free: 11.23 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005335/0.8943, allocations: 31.97 kB / 0.8719 GB, free: 11.2 MB / 0.6387 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.508e-05/0.8944, allocations: 19.91 kB / 0.8719 GB, free: 11.18 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.422e-05/0.8945, allocations: 23.98 kB / 0.8719 GB, free: 11.16 MB / 0.6387 GB Notification: Performance of sorting global known variables: time 0.0005203/0.895, allocations: 414.8 kB / 0.8723 GB, free: 10.75 MB / 0.6387 GB Notification: Performance of sort global known variables: time 1.3e-07/0.895, allocations: 0 / 0.8723 GB, free: 10.75 MB / 0.6387 GB Notification: Performance of remove unused functions: time 0.001013/0.896, allocations: 343.3 kB / 0.8726 GB, free: 10.42 MB / 0.6387 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * 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 (25): * Single equations (assignments): 24 * 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 0.0004629/0.8965, allocations: 171.7 kB / 0.8728 GB, free: 10.25 MB / 0.6387 GB Notification: Performance of simCode: created initialization part: time 0.001165/0.8977, allocations: 0.5322 MB / 0.8733 GB, free: 9.723 MB / 0.6387 GB Notification: Performance of simCode: created event and clocks part: time 5.24e-06/0.8977, allocations: 0 / 0.8733 GB, free: 9.723 MB / 0.6387 GB Notification: Performance of simCode: created simulation system equations: time 0.0005563/0.8983, allocations: 278.9 kB / 0.8736 GB, free: 9.438 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001567/0.8998, allocations: 369.6 kB / 0.8739 GB, free: 9.078 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002245/0.9021, allocations: 1.214 MB / 0.8751 GB, free: 7.832 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005979/0.9027, allocations: 0.9292 MB / 0.876 GB, free: 6.875 MB / 0.6387 GB Notification: Performance of simCode: alias equations: time 0.0006339/0.9034, allocations: 172.9 kB / 0.8762 GB, free: 6.703 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001396/0.9035, allocations: 43.44 kB / 0.8762 GB, free: 6.66 MB / 0.6387 GB Notification: Performance of SimCode: time 6.31e-07/0.9035, allocations: 0 / 0.8762 GB, free: 6.66 MB / 0.6387 GB Notification: Performance of Templates: time 0.02494/0.9285, allocations: 12.97 MB / 0.8889 GB, free: 9.836 MB / 0.6544 GB make -j1 -f Buildings_3.0.0_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.makefile (rm -f Buildings_3.0.0_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe ; mkfifo Buildings_3.0.0_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe ; head -c 1048576 < Buildings_3.0.0_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe >> ../files/Buildings_3.0.0_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.sim & ./Buildings_3.0.0_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_3.0.0_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe 2>&1)