Configuration Values

cargo-maelstrom supports the following configuration values:

broker

The broker configuration value specifies the socket address of the broker. This configuration value is optional. If not provided, cargo-maelstrom will run in standalone mode.

Here are some example value socket addresses:

• broker.example.org:1234
• 192.0.2.3:1234
• [2001:db8::3]:1234

log-level

See here.

cargo-maelstrom always prints log messages to stdout.

quiet

The quiet configuration values, if set to true, causes cargo-maelstrom to be more more succinct with its output. If cargo-maelstrom is outputting to a terminal, it will display a single-line progress bar indicating all test state, then print a summary at the end. If not outputting to a terminal, it will only print a summary at the end.

timeout

The optional timeout configuration value provides the timeout value to use for all tests. This will override any value set in maelstrom-test.toml.

cache-size

This is a local-worker setting. See here for more.

inline-limit

This is a local-worker setting. See here for more.

slots

This is a local-worker setting. See here for more.

Cargo Settings

cargo-maelstrom shells out to cargo to get metadata about tests and to build the test artifacts. For the former, it uses cargo metadata. For the latter, it uses cargo test --no-run.

cargo-maelstrom supports a number of command-line options that are passed through directly to cargo. It does not inspect these values at all.

cargo-maelstrom doesn't accept multiple instances of the --features command-line option. Instead, combine the features into a single, comma-separated argument like this: --features=feat1,feat2,feat3.

cargo-maelstrom doesn't accept the --release alias. Use --profile=release instead.