C:\Users\Teko\Desktop\digi-certi\backend>truffle migrate --network rinkeby
bigint: Failed to load bindings, pure JS will be used (try npm run rebuild?)
This version of µWS is not compatible with your Node.js build:

Error: Cannot find module './uws_win32_ia32_83.node'
Falling back to a NodeJS implementation; performance may be degraded.



Compiling your contracts...
===========================
> Compiling @openzeppelin\contracts\access\Ownable.sol
> Compiling @openzeppelin\contracts\token\ERC721\IERC721.sol
> Compiling @openzeppelin\contracts\token\ERC721\extensions\IERC721Enumerable.sol
> Compiling @openzeppelin\contracts\utils\Context.sol
> Compiling @openzeppelin\contracts\utils\Strings.sol
> Compiling @openzeppelin\contracts\utils\introspection\ERC165.sol
> Compiling @openzeppelin\contracts\utils\introspection\IERC165.sol
> Compiling .\contracts\Certificate.sol
> Compiling .\contracts\CertificateFactory.sol
> Compiling .\contracts\ERC721NonTransferable.sol
> Compiling .\contracts\ERC721NonTransferableEnumerable.sol
> Compiling .\contracts\Migrations.sol
> Artifacts written to C:\Users\Teko\Desktop\digi-certi\backend\build\contracts
> Compiled successfully using:
   - solc: 0.8.4+commit.c7e474f2.Emscripten.clang


Migrations dry-run (simulation)
===============================
> Network name:    'rinkeby-fork'
> Network id:      4
> Block gas limit: 30000000 (0x1c9c380)


1_initial_migration.js
======================

   Deploying 'Migrations'
   ----------------------
   > block number:        10619084
   > block timestamp:     1651691592
   > account:             0xc5a875d665b942d48c6657761A5A58236B9540C2
   > balance:             1.99751796
   > gas used:            248204 (0x3c98c)
   > gas price:           10 gwei
   > value sent:          0 ETH
   > total cost:          0.00248204 ETH

   -------------------------------------
   > Total cost:          0.00248204 ETH


2_test_deploy.js
================

   Deploying 'Certificate'
   -----------------------
   > block number:        10619086
   > block timestamp:     1651691598
   > account:             0xc5a875d665b942d48c6657761A5A58236B9540C2
   > balance:             1.96139718
   > gas used:            3566165 (0x366a55)
   > gas price:           10 gwei
   > value sent:          0 ETH
   > total cost:          0.03566165 ETH


   Deploying 'CertificateFactory'
   ------------------------------
   > block number:        10619087
   > block timestamp:     1651691601
   > account:             0xc5a875d665b942d48c6657761A5A58236B9540C2
   > balance:             1.91690649
   > gas used:            4449069 (0x43e32d)
   > gas price:           10 gwei
   > value sent:          0 ETH
   > total cost:          0.04449069 ETH

   -------------------------------------
   > Total cost:          0.08015234 ETH

Summary
=======
> Total deployments:   3
> Final cost:          0.08263438 ETH




Starting migrations...
======================
> Network name:    'rinkeby'
> Network id:      4
> Block gas limit: 29970705 (0x1c95111)


1_initial_migration.js
======================

   Deploying 'Migrations'
   ----------------------
   > transaction hash:    0xd95ffe9e381ca90d684b454b850c6e792bcbc821783089df3528f78cebe831e0
   > Blocks: 1            Seconds: 17
   > contract address:    0x91cb4615DEDD0aCd89441895b71B8562D4A6EBb0
   > block number:        10619091
   > block timestamp:     1651691625
   > account:             0xc5a875d665b942d48c6657761A5A58236B9540C2
   > balance:             1.99751796
   > gas used:            248204 (0x3c98c)
   > gas price:           10 gwei
   > value sent:          0 ETH
   > total cost:          0.00248204 ETH

   > Saving migration to chain.
   > Saving artifacts
   -------------------------------------
   > Total cost:          0.00248204 ETH


2_test_deploy.js
================

   Deploying 'Certificate'
   -----------------------
   > transaction hash:    0x473291e605783980d12f4a74c37ba92ba2302a582c5e6f4c09494eee742af8bb
   > Blocks: 2            Seconds: 21
   > contract address:    0x5B786647760305653FCFb22f978f349A5b333452
   > block number:        10619094
   > block timestamp:     1651691670
   > account:             0xc5a875d665b942d48c6657761A5A58236B9540C2
   > balance:             1.96139718
   > gas used:            3566165 (0x366a55)
   > gas price:           10 gwei
   > value sent:          0 ETH
   > total cost:          0.03566165 ETH


   Deploying 'CertificateFactory'
   ------------------------------
   > transaction hash:    0x180d14cbd3cda641d3710b91b6be9dd71f07f59ea1d88eebe08edf094dce8b65
   > Blocks: 2            Seconds: 21
   > contract address:    0xC3e340dd1d5825aEBaf69bf5F311Ea6498ec1a4c
   > block number:        10619096
   > block timestamp:     1651691700
   > account:             0xc5a875d665b942d48c6657761A5A58236B9540C2
   > balance:             1.91690649
   > gas used:            4449069 (0x43e32d)
   > gas price:           10 gwei
   > value sent:          0 ETH
   > total cost:          0.04449069 ETH

   > Saving migration to chain.
   > Saving artifacts
   -------------------------------------
   > Total cost:          0.08015234 ETH

Summary
=======
> Total deployments:   3
> Final cost:          0.08263438 ETH