OpenROAD 0.9.0 d03ebfc244
This program is licensed under the BSD-3 license. See the LICENSE file for details. 
Components of this program may be licensed under more restrictive licenses which must be honored.
Error: cannot open '/.openroad'.
Notice 0: Reading LEF file:  /project/openlane/user_project_wrapper_empty/runs/user_project_wrapper_empty/tmp/merged_unpadded.lef
Notice 0:     Created 13 technology layers
Notice 0:     Created 25 technology vias
Notice 0:     Created 440 library cells
Notice 0: Finished LEF file:  /project/openlane/user_project_wrapper_empty/runs/user_project_wrapper_empty/tmp/merged_unpadded.lef
Notice 0: 
Reading DEF file: /project/openlane/user_project_wrapper_empty/runs/user_project_wrapper_empty/tmp/floorplan/pdn.def
Notice 0: Design: user_project_wrapper
Notice 0:     Created 642 pins.
Notice 0:     Created 2 components and 606 component-terminals.
Notice 0:     Created 6 special nets and 0 connections.
Notice 0:     Created 636 nets and 604 connections.
Notice 0: Finished DEF file: /project/openlane/user_project_wrapper_empty/runs/user_project_wrapper_empty/tmp/floorplan/pdn.def
[INFO] [PDNG-0016] Power Delivery Network Generator: Generating PDN
[INFO] [PDNG-0016]   config: /project/openlane/user_project_wrapper_empty/pdn.tcl
[INFO] [PDNG-0008] Design Name is user_project_wrapper
[INFO] [PDNG-0009] Reading technology data
[ERROR] [PDNG-0037] Cannot find pin vdda2 on instance obs_core_obs (obs_core_obs)
[ERROR] [PDNG-0037] Cannot find pin vssa2 on instance obs_core_obs (obs_core_obs)
[ERROR] [PDNG-0037] Cannot find pin vdda2 on instance mprj (user_proj_example)
[ERROR] [PDNG-0037] Cannot find pin vssa2 on instance mprj (user_proj_example)
[INFO] [PDNG-0011] ****** INFO ******
Type: stdcell, grid
    Core Rings
      Layer: met5 -  width: 3.000  spacing: 1.600  core_offset: 41.600 
      Layer: met4 -  width: 3.000  spacing: 1.600  core_offset: 41.600 
    Stdcell Rails
    Straps
      Layer: met4 -  width: 3.000  pitch: 180.000  offset: 54.000 
      Layer: met5 -  width: 3.000  pitch: 180.000  offset: 54.000 
    Connect: {met4 met5}
Type: macro, macro_1
    Instance: obs_core_obs
    Straps
    Connect: 
Type: macro, macro_2
    Straps
    Connect: 
[INFO] [PDNG-0012] **** END INFO ****
[INFO] [PDNG-0013] Inserting stdcell grid - grid
[INFO] [PDNG-0010] Inserting macro grid for 2 macros
[INFO] [PDNG-0034]   - grid for instance obs_core_obs
[INFO] [PDNG-0034]   - grid for instance mprj
[INFO] [PDNG-0015] Writing to database