User bug: truffle migration fails

[platocrat]

Describe the bug
Tried to debug a user's truffle migration script but was unsuccessful.

The error that we both ran into when attempting to run the migration script was:

"Organisation" -- L2 gas limit too low: 0, use at least 100000.

To Reproduce
Steps to reproduce the behavior:

1. Git clone project and checkout branch: https://github.com/platocrat/eth-dapp.git && git checkout fix/deployment
2. cd ./truffle\ project/
3. Install deps: yarn
4. Compile contracts: yarn truffle compile --config truffle-config-ovm.js
5. Run migrations: yarn truffle migrate --config truffle-config-ovm.js
6. See error

Expected behavior
Since the setup of this project is quite similar to Optimism's Truffle tutorial, migrations should deploy contracts without errors.

System Specs:

• OS: MacOS
• Package Version (or commit hash):

Additional context

• Reference to the changes i made to their repository to run the migrations script Ignore this since they have since made their repository private :rip:

[qbzzt]

It looks like you're deploying to Kovan (https://github.com/platocrat/eth-dapp/blob/fix/deployment/truffle%20project/truffle-config-ovm.js#L9-L19).

There is a known problem here. trufflesuite/truffle#4217

[matYang]

running into exact same problem here, tried to specify gas parameter for the deployer and still no luck, it is weird because I'm explicitly specifying a value for gas limit in tx options, but Truffle is still saying gas limit too low: 0

[matYang]

Was trying to figure this out, what surprised me was, when I did a clean start, i.e.

truffle unbox optimism
// set our Kovan mnemonic and Infura ID
truffle compile
truffle test --config truffle-config.ovm.js --network optimistic_kovan

I'm now getting this same error, while it used to succeed two days ago.

[matYang]

and this replicates consistently on Truffle 5.4.9 and 5.3.2

[matYang]

Found that manually setting gas: 0 actually gets around this issue and makes some transactions succeed, now I have a new problem, when deploying a new contract, I got
fee too low: 164999985000000, use at least tx.gasLimit = 24659999 and tx.gasPrice = 15000000
then I tried the suggested gas limit and got
invalid transaction: exceeds block gas limit

[harshmaur]

The L2 gas too low is also coming up on remix and hardhat. It's not exclusive to truffle.

[smartcontracts]

We're fixing this in the experimental branch. Should be ready in the next few days.

[matYang]

After latest Truffle version 5.4.11 pulled in trufflesuite/truffle#4296 which would call eth_estimateGas for gas limit, the error now becomes the following:

Error:  *** Deployment Failed ***

"SimpleStorageTest" exceeded the block limit (using Truffle's estimate).
   * Block limit: 11000000 (0xa7d8c0)
   * Report this error in the Truffle issues on Github. It should not happen.
   * Try: setting gas manually in 'truffle-config.js' or as parameter to 'deployer.deploy'

[matYang]

Setting a gas limit manually with Truffle 5.4.11 also fails:

If I set gas limit to 4999999, I get

"SimpleStorage" exceeded the block limit (with a gas value you set).
   * Block limit:  11000000 (0xa7d8c0)
   * Gas sent:     4999999 (0x4c4b3f)

If I set gas limit to 4000000, I get
"SimpleStorage" -- L2 gas limit too low: 0, use at least 100000.

[tynes]

We recently upgraded the optimistic ethereum kovan deployment which should solve this problem

[smartcontracts]

Should be fixed on Optimistic Kovan. I'm going to close this issue. I highly recommend trying Truffle out with OP Kovan and confirming that everything is working as expected!