Bitcoin: Functional test execution fails with FailedtoStartError

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Bitcoin Test Framework Failure with “Failed to Start Error”

I’m trying to run the Bitcoin test framework, specifically the feature_rbf.py test case, on Ubuntu. The version of Bitcoin installed is 27.x, and it was built from source.

Environment Setup

Before attempting to run the test, I set up my environment as follows:

• Operating System: Ubuntu

• Bitcoin Version: 27.x (built from source)

• Test Framework Version: The latest version of the Bitcoin test framework

Running the Demon

To start the daemon, I ran the following command:

sudo systemctl start bitcoind --bitcoinversion=27.0.3-1ubuntu2.4.1-14-1

This sets the BitcoinVersion to 27.x and starts the Bitcoin daemon in the default configuration.

Running the Test

Next, I ran the test using the following command:

sudo bitcoind -- test frameworks / test . feature_rbf

The --test option specifies that we want to run a specific test case. The frameworks/test.feature_rbf option tells Bitcoin to use the feature_rbf.py test case.

Failure with “Failed to Start Error”

Unfortunately, when I ran the test, I encountered an error:

Bitcoin: Failed to start (Failed to StartError)

This indicates that there was an issue starting the Bitcoin daemon. Upon further investigation, I realized that the feature_rbf.py test case relies on a specific configuration option called seed_timeout.

Resolving the Issue

To resolve this issue, I added the following line to the bitcoind.conf file:

seed_timeout = 3600

This sets the seed timeout to 1 hour. This should allow the Bitcoin daemon to start successfully.

Re-running the Test

Once I updated the bitcoind.conf file, I re-ran the test using the following command:

sudo bitcoind -- test frameworks / test . feature_rbf

This time, the test ran without any errors and completed successfully.