Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+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/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/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 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) 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) Running command: "" <> buildModelFMU(Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater,fileNamePrefix="Buildings_maint_7_0_x_Buildings_Fluid_MixingVolumes_BaseClasses_Validation_MixingVolumeHeatPortWater",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater,fileNamePrefix="Buildings_maint_7_0_x_Buildings_Fluid_MixingVolumes_BaseClasses_Validation_MixingVolumeHeatPortWater",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.412/1.412, allocations: 251.9 MB / 266.9 MB, free: 11.02 MB / 218.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001216/0.001216, allocations: 178 kB / 326.5 MB, free: 2.23 MB / 250.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 2.07/2.07, allocations: 205.4 MB / 0.5775 GB, free: 20.25 MB / 426.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0008447/0.0008445, allocations: 90.3 kB / 0.6821 GB, free: 12.88 MB / 0.5105 GB Notification: Performance of FrontEnd - loaded program: time 0.0004845/0.0004847, allocations: 9.344 kB / 0.7963 GB, free: 135.1 MB / 0.6042 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3253/0.3259, allocations: 106.3 MB / 0.9001 GB, free: 63.83 MB / 0.6042 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater): time 0.02426/0.3502, allocations: 19.62 MB / 0.9193 GB, free: 44.14 MB / 0.6042 GB Notification: Performance of NFInst.instExpressions: time 0.008075/0.3583, allocations: 5.825 MB / 0.925 GB, free: 38.31 MB / 0.6042 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001081/0.3594, allocations: 19.88 kB / 0.925 GB, free: 38.29 MB / 0.6042 GB Notification: Performance of NFTyping.typeComponents: time 0.0009411/0.3604, allocations: 322.4 kB / 0.9253 GB, free: 37.97 MB / 0.6042 GB Notification: Performance of NFTyping.typeBindings: time 0.002751/0.3632, allocations: 0.9174 MB / 0.9262 GB, free: 37.05 MB / 0.6042 GB Notification: Performance of NFTyping.typeClassSections: time 0.002574/0.3657, allocations: 0.8843 MB / 0.9271 GB, free: 36.18 MB / 0.6042 GB Notification: Performance of NFFlatten.flatten: time 0.002686/0.3684, allocations: 1.933 MB / 0.929 GB, free: 34.25 MB / 0.6042 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00117/0.3696, allocations: 0.8913 MB / 0.9298 GB, free: 33.34 MB / 0.6042 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00134/0.371, allocations: 0.7902 MB / 0.9306 GB, free: 32.55 MB / 0.6042 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0006288/0.3716, allocations: 0.556 MB / 0.9311 GB, free: 31.99 MB / 0.6042 GB Notification: Performance of NFPackage.collectConstants: time 7.706e-05/0.3717, allocations: 36 kB / 0.9312 GB, free: 31.96 MB / 0.6042 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001199/0.3729, allocations: 475.3 kB / 0.9316 GB, free: 31.49 MB / 0.6042 GB Notification: Performance of NFScalarize.scalarize: time 0.0001604/0.3731, allocations: 191.2 kB / 0.9318 GB, free: 31.3 MB / 0.6042 GB Notification: Performance of NFVerifyModel.verify: time 0.0002557/0.3733, allocations: 249.1 kB / 0.9321 GB, free: 31.05 MB / 0.6042 GB Notification: Performance of NFConvertDAE.convert: time 0.001172/0.3745, allocations: 1.349 MB / 0.9334 GB, free: 29.7 MB / 0.6042 GB Notification: Performance of FrontEnd - DAE generated: time 3.737e-06/0.3745, allocations: 4 kB / 0.9334 GB, free: 29.7 MB / 0.6042 GB Notification: Performance of FrontEnd: time 2.324e-06/0.3745, allocations: 0 / 0.9334 GB, free: 29.7 MB / 0.6042 GB Notification: Performance of Transformations before backend: time 1.397e-05/0.3746, allocations: 4 kB / 0.9334 GB, free: 29.7 MB / 0.6042 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 183 * Number of variables: 183 Notification: Performance of Generate backend data structure: time 0.0017/0.3763, allocations: 1.277 MB / 0.9346 GB, free: 28.36 MB / 0.6042 GB Notification: Performance of prepare preOptimizeDAE: time 4.532e-05/0.3763, allocations: 12.03 kB / 0.9346 GB, free: 28.35 MB / 0.6042 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001384/0.3765, allocations: 134.4 kB / 0.9348 GB, free: 28.21 MB / 0.6042 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0003489/0.3768, allocations: 138.6 kB / 0.9349 GB, free: 28.07 MB / 0.6042 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001679/0.3785, allocations: 1.045 MB / 0.9359 GB, free: 26.99 MB / 0.6042 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.047e-05/0.3786, allocations: 58 kB / 0.936 GB, free: 26.93 MB / 0.6042 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.802e-05/0.3787, allocations: 76 kB / 0.936 GB, free: 26.86 MB / 0.6042 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00129/0.38, allocations: 1.014 MB / 0.937 GB, free: 25.8 MB / 0.6042 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.428e-05/0.38, allocations: 7.922 kB / 0.937 GB, free: 25.79 MB / 0.6042 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.225e-05/0.3801, allocations: 32 kB / 0.9371 GB, free: 25.76 MB / 0.6042 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.766e-05/0.3801, allocations: 27.95 kB / 0.9371 GB, free: 25.73 MB / 0.6042 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009634/0.3811, allocations: 0.757 MB / 0.9378 GB, free: 24.97 MB / 0.6042 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 0.004334/0.3854, allocations: 4.639 MB / 0.9424 GB, free: 19.98 MB / 0.6042 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0004336/0.3859, allocations: 390.8 kB / 0.9427 GB, free: 19.59 MB / 0.6042 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002994/0.3862, allocations: 425.8 kB / 0.9432 GB, free: 19.09 MB / 0.6042 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.749e-05/0.3862, allocations: 42.89 kB / 0.9432 GB, free: 19.04 MB / 0.6042 GB Notification: Performance of pre-optimization done (n=40): time 2.214e-06/0.3863, allocations: 0 / 0.9432 GB, free: 19.04 MB / 0.6042 GB Notification: Performance of matching and sorting (n=40): time 0.001624/0.3879, allocations: 0.8559 MB / 0.944 GB, free: 18.15 MB / 0.6042 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.305e-05/0.3879, allocations: 59.36 kB / 0.9441 GB, free: 18.08 MB / 0.6042 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0009096/0.3888, allocations: 0.9738 MB / 0.945 GB, free: 17.1 MB / 0.6042 GB Notification: Performance of collectPreVariables (initialization): time 3.93e-05/0.3889, allocations: 37.7 kB / 0.9451 GB, free: 17.06 MB / 0.6042 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002809/0.3892, allocations: 0.4989 MB / 0.9456 GB, free: 16.55 MB / 0.6042 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001099/0.3893, allocations: 145.9 kB / 0.9457 GB, free: 16.41 MB / 0.6042 GB Notification: Performance of simplifyInitialFunctions (initialization): time 2.07e-05/0.3893, allocations: 8 kB / 0.9457 GB, free: 16.4 MB / 0.6042 GB Notification: Performance of setup shared object (initialization): time 7.259e-05/0.3894, allocations: 334 kB / 0.946 GB, free: 16.07 MB / 0.6042 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002474/0.3897, allocations: 221 kB / 0.9462 GB, free: 15.85 MB / 0.6042 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003837/0.3901, allocations: 426.6 kB / 0.9466 GB, free: 15.35 MB / 0.6042 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003453/0.3904, allocations: 321.3 kB / 0.9469 GB, free: 15.04 MB / 0.6042 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.406e-06/0.3904, allocations: 0 / 0.9469 GB, free: 15.04 MB / 0.6042 GB Notification: Performance of matching and sorting (n=70) (initialization): time 0.001104/0.3915, allocations: 0.8026 MB / 0.9477 GB, free: 14.22 MB / 0.6042 GB Notification: Performance of prepare postOptimizeDAE: time 0.0004484/0.392, allocations: 2.177 MB / 0.9499 GB, free: 11.88 MB / 0.6042 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.129e-05/0.392, allocations: 12 kB / 0.9499 GB, free: 11.86 MB / 0.6042 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004128/0.3924, allocations: 88.72 kB / 0.95 GB, free: 11.77 MB / 0.6042 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003327/0.3928, allocations: 115.8 kB / 0.9501 GB, free: 11.66 MB / 0.6042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0003833/0.3932, allocations: 0.6303 MB / 0.9507 GB, free: 11 MB / 0.6042 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007349/0.3939, allocations: 111.4 kB / 0.9508 GB, free: 10.89 MB / 0.6042 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.454e-05/0.394, allocations: 24 kB / 0.9508 GB, free: 10.87 MB / 0.6042 GB Notification: Performance of prepare postOptimizeDAE: time 1.275e-05/0.394, allocations: 4 kB / 0.9508 GB, free: 10.87 MB / 0.6042 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.0008468/0.3949, allocations: 0.6788 MB / 0.9515 GB, free: 10.18 MB / 0.6042 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.494e-06/0.3949, allocations: 12.7 kB / 0.9515 GB, free: 10.17 MB / 0.6042 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001377/0.395, allocations: 68.75 kB / 0.9516 GB, free: 10.1 MB / 0.6042 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002922/0.3953, allocations: 111.8 kB / 0.9517 GB, free: 9.992 MB / 0.6042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001264/0.3966, allocations: 1.728 MB / 0.9533 GB, free: 8.117 MB / 0.6042 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006811/0.3973, allocations: 95.53 kB / 0.9534 GB, free: 8.023 MB / 0.6042 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.44e-05/0.3973, allocations: 35.94 kB / 0.9535 GB, free: 7.988 MB / 0.6042 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 25 * 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 (64): * Single equations (assignments): 63 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {1 6} Notification: Performance of prepare postOptimizeDAE: time 0.0006034/0.398, allocations: 484.7 kB / 0.9539 GB, free: 7.504 MB / 0.6042 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001276/0.3981, allocations: 90.88 kB / 0.954 GB, free: 7.414 MB / 0.6042 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0008994/0.399, allocations: 0.6328 MB / 0.9546 GB, free: 6.777 MB / 0.6042 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.866e-06/0.3991, allocations: 8 kB / 0.9546 GB, free: 6.77 MB / 0.6042 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.863e-06/0.3991, allocations: 0 / 0.9546 GB, free: 6.77 MB / 0.6042 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0006577/0.3997, allocations: 0.8284 MB / 0.9555 GB, free: 5.852 MB / 0.6042 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 postOpt removeSimpleEquations (simulation): time 0.002214/0.4019, allocations: 1.672 MB / 0.9571 GB, free: 4.094 MB / 0.6042 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.86e-05/0.402, allocations: 4 kB / 0.9571 GB, free: 4.09 MB / 0.6042 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003086/0.4023, allocations: 84.02 kB / 0.9572 GB, free: 4.008 MB / 0.6042 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001212/0.4024, allocations: 44.77 kB / 0.9572 GB, free: 3.961 MB / 0.6042 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.161e-05/0.4025, allocations: 12 kB / 0.9572 GB, free: 3.949 MB / 0.6042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0003018/0.4028, allocations: 0.5679 MB / 0.9578 GB, free: 3.355 MB / 0.6042 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.885e-06/0.4028, allocations: 3.984 kB / 0.9578 GB, free: 3.352 MB / 0.6042 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001041/0.4038, allocations: 0.9907 MB / 0.9588 GB, free: 2.305 MB / 0.6042 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004952/0.4044, allocations: 267.9 kB / 0.959 GB, free: 2.023 MB / 0.6042 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 9.882e-05/0.4045, allocations: 11.95 kB / 0.959 GB, free: 2.012 MB / 0.6042 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005673/0.405, allocations: 77.03 kB / 0.9591 GB, free: 1.938 MB / 0.6042 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.734e-05/0.4051, allocations: 31.89 kB / 0.9591 GB, free: 1.906 MB / 0.6042 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.82e-05/0.4051, allocations: 23.98 kB / 0.9591 GB, free: 1.883 MB / 0.6042 GB Notification: Performance of sorting global known variables: time 0.0007782/0.4059, allocations: 0.6902 MB / 0.9598 GB, free: 1.195 MB / 0.6042 GB Notification: Performance of sort global known variables: time 1.11e-07/0.4059, allocations: 0 / 0.9598 GB, free: 1.195 MB / 0.6042 GB Notification: Performance of remove unused functions: time 0.001613/0.4075, allocations: 0.5689 MB / 0.9604 GB, free: 0.625 MB / 0.6042 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 3 (vol[1].dynBal.U,vol[2].dynBal.U,vol[3].dynBal.U) * 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 (39): * Single equations (assignments): 36 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {1 3} Notification: Performance of Backend phase and start with SimCode phase: time 0.002473/0.41, allocations: 1.976 MB / 0.9623 GB, free: 14.6 MB / 0.6198 GB Notification: Performance of simCode: created initialization part: time 0.001844/0.4119, allocations: 0.996 MB / 0.9633 GB, free: 13.59 MB / 0.6198 GB Notification: Performance of simCode: created event and clocks part: time 4.749e-06/0.4119, allocations: 0 / 0.9633 GB, free: 13.59 MB / 0.6198 GB Notification: Performance of simCode: created simulation system equations: time 0.000377/0.4123, allocations: 240.9 kB / 0.9635 GB, free: 13.36 MB / 0.6198 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002659/0.415, allocations: 0.5555 MB / 0.964 GB, free: 12.82 MB / 0.6198 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01333/0.4283, allocations: 9.803 MB / 0.9736 GB, free: 2.77 MB / 0.6198 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000889/0.4292, allocations: 1.239 MB / 0.9748 GB, free: 1.5 MB / 0.6198 GB Notification: Performance of simCode: alias equations: time 0.001497/0.4307, allocations: 438 kB / 0.9753 GB, free: 1.078 MB / 0.6198 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006204/0.4314, allocations: 359.3 kB / 0.9756 GB, free: 0.7266 MB / 0.6198 GB Notification: Performance of SimCode: time 2.053e-06/0.4314, allocations: 0 / 0.9756 GB, free: 0.7266 MB / 0.6198 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.06133/0.4927, allocations: 28.67 MB / 1.004 GB, free: 4.477 MB / 0.6511 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002708/0.493, allocations: 290.1 kB / 1.004 GB, free: 4.121 MB / 0.6511 GB Notification: Performance of buildModelFMU: Generate platform static: time 2.81/3.303, allocations: 3.375 kB / 1.004 GB, free: 4.121 MB / 0.6511 GB (rm -f Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_maint_7_0_x_Buildings_Fluid_MixingVolumes_BaseClasses_Validation_MixingVolumeHeatPortWater_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 Buildings_maint_7_0_x_Buildings_Fluid_MixingVolumes_BaseClasses_Validation_MixingVolumeHeatPortWater.fmu > Buildings_maint.7.0.x_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.pipe 2>&1)