Cargo / No Fail Fast
No Fail Fast
Executes benchmarks without halting on failures to ensure all metrics are recorded.
cargo bench --no-fail-fastcargo bench --no-fail-fast#!/bin/bash
# No Fail Fast
cargo bench --no-fail-fastimport subprocess
# No Fail Fast
# Make sure to replace <placeholders> with actual values
def run_command():
cmd = [
"cargo",
"bench",
"--no-fail-fast"
]
try:
print(f"Executing: {' '.join(cmd)}")
subprocess.run(cmd, check=True)
except subprocess.CalledProcessError as e:
print(f"Error: {e}")
except FileNotFoundError:
print("Error: cargo not found. Please install it first.")
if __name__ == "__main__":
run_command()When To Use
When evaluating multiple benchmarks where some are expected to fail without affecting overall results.
Pro Tip
Use with detailed logs to diagnose issues while preserving data from all benchmarks.
Terminal Output
Expected runtime feedback
Running benchmark 1: benchmark_name_1
Benchmarking...
Result: 42.5 ops/s
Running benchmark 2: benchmark_name_2
Benchmarking...
Result: 38.1 ops/s
Finished benchmarks with no failures.Anatomy of Output
Understanding the result
Running benchmarks with no-fail-fast option enabled Execution Mode Identifies the mode in which benchmarks are executed.
Benchmark 'bench_3' failed to execute Failure Notification Informs about which specific benchmark encountered an error.
Metrics collected: 9 successful, 1 failed Execution Summary Detailed metrics excluding failed benchmarks.
Power User Variants
Optimized versions
cargo bench --no-fail-fast --verbose Gives detailed output while still ignoring failures.
cargo bench --no-fail-fast --release Runs benchmarks with optimizations while ignoring failures.
Troubleshooting
Common pitfalls
Benchmark 'bench_3' ran out of bounds
Solution: Check benchmark configurations; ensure inputs are within expected ranges.
Error: Missing required dependencies for benchmarking
Solution: Install all necessary dependencies and re-run the benchmarks.
Benchmark execution interrupted unexpectedly
Solution: Review system logs for potential causes of interruptions.
Command Breakdown
What each part is doing
-
cargo - Base Command
- The executable that performs this operation. Here it runs Cargo before the shell applies any redirect operators.
-
--no-fail-fast - Command Option
- Tool-specific option used by this command invocation.
How To Run
Execution path
- Step 1
Run `cargo bench --no-fail-fast` to execute the benchmarks without stopping on failures.
- Step 2
Check the output for any benchmark results and ensure all benchmarks were attempted.
Alternative Approaches
Comparable commands in other tools
Alternative build tools tools for the same job.