[INFO] cloning repository https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jrawsthorne/rust-bitcoin-cpu-miner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrawsthorne%2Frust-bitcoin-cpu-miner", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrawsthorne%2Frust-bitcoin-cpu-miner'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7e27282ebed6ef5bf7d81f4ceb0f6f09174580e8 [INFO] testing jrawsthorne/rust-bitcoin-cpu-miner against master#9e297bf54d31eb3b30067208ff9af4416945a2ed for pr-125507 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrawsthorne%2Frust-bitcoin-cpu-miner" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner on toolchain 9e297bf54d31eb3b30067208ff9af4416945a2ed [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e297bf54d31eb3b30067208ff9af4416945a2ed" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] finished tweaking git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] tweaked toml for git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e297bf54d31eb3b30067208ff9af4416945a2ed" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded bech32 v0.7.1 [INFO] [stderr] Downloaded secp256k1 v0.15.5 [INFO] [stderr] Downloaded bitcoin v0.21.0 [INFO] [stderr] Downloaded hermit-abi v0.1.5 [INFO] [stderr] Downloaded bitcoin_hashes v0.7.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+9e297bf54d31eb3b30067208ff9af4416945a2ed" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 376369f3cb5b118959eb58e80b059d6c555041204fab6f7fa027d09cb2da9435 [INFO] running `Command { std: "docker" "start" "-a" "376369f3cb5b118959eb58e80b059d6c555041204fab6f7fa027d09cb2da9435", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "376369f3cb5b118959eb58e80b059d6c555041204fab6f7fa027d09cb2da9435", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "376369f3cb5b118959eb58e80b059d6c555041204fab6f7fa027d09cb2da9435", kill_on_drop: false }` [INFO] [stdout] 376369f3cb5b118959eb58e80b059d6c555041204fab6f7fa027d09cb2da9435 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+9e297bf54d31eb3b30067208ff9af4416945a2ed" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6136e21167e5aca244973655542ace09e2653728173f231cfdfe66170534ac49 [INFO] running `Command { std: "docker" "start" "-a" "6136e21167e5aca244973655542ace09e2653728173f231cfdfe66170534ac49", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling rand_core v0.4.2 [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling cc v1.0.41 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling hex v0.3.2 [INFO] [stderr] Compiling bech32 v0.7.1 [INFO] [stderr] Compiling bitcoin_hashes v0.7.2 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling rand_jitter v0.1.4 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling rand_hc v0.1.0 [INFO] [stderr] Compiling rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Compiling secp256k1 v0.15.5 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling num_cpus v1.11.1 [INFO] [stderr] Compiling bitcoin v0.21.0 [INFO] [stderr] Compiling rust-bitcoin-cpu-miner v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.10s [INFO] running `Command { std: "docker" "inspect" "6136e21167e5aca244973655542ace09e2653728173f231cfdfe66170534ac49", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6136e21167e5aca244973655542ace09e2653728173f231cfdfe66170534ac49", kill_on_drop: false }` [INFO] [stdout] 6136e21167e5aca244973655542ace09e2653728173f231cfdfe66170534ac49 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+9e297bf54d31eb3b30067208ff9af4416945a2ed" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f7030069c1a55185c26f76ac712680c006a76daf2c2d8047b92d60064528a1f7 [INFO] running `Command { std: "docker" "start" "-a" "f7030069c1a55185c26f76ac712680c006a76daf2c2d8047b92d60064528a1f7", kill_on_drop: false }` [INFO] [stderr] Compiling rust-bitcoin-cpu-miner v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s [INFO] running `Command { std: "docker" "inspect" "f7030069c1a55185c26f76ac712680c006a76daf2c2d8047b92d60064528a1f7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f7030069c1a55185c26f76ac712680c006a76daf2c2d8047b92d60064528a1f7", kill_on_drop: false }` [INFO] [stdout] f7030069c1a55185c26f76ac712680c006a76daf2c2d8047b92d60064528a1f7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+9e297bf54d31eb3b30067208ff9af4416945a2ed" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] b9fec91e2c1175fea17b5ba51be91654bb63ad5356a7403c52cb64dd2eb0f505 [INFO] running `Command { std: "docker" "start" "-a" "b9fec91e2c1175fea17b5ba51be91654bb63ad5356a7403c52cb64dd2eb0f505", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_bitcoin_cpu_miner-da0ecb3ae8fbc511) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "b9fec91e2c1175fea17b5ba51be91654bb63ad5356a7403c52cb64dd2eb0f505", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b9fec91e2c1175fea17b5ba51be91654bb63ad5356a7403c52cb64dd2eb0f505", kill_on_drop: false }` [INFO] [stdout] b9fec91e2c1175fea17b5ba51be91654bb63ad5356a7403c52cb64dd2eb0f505 [INFO] testing jrawsthorne/rust-bitcoin-cpu-miner against try#61a9ac64344e91d62f5496627ff363d177f9daab for pr-125507 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrawsthorne%2Frust-bitcoin-cpu-miner" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner on toolchain 61a9ac64344e91d62f5496627ff363d177f9daab [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] finished tweaking git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] tweaked toml for git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing jrawsthorne/rust-bitcoin-cpu-miner against try#61a9ac64344e91d62f5496627ff363d177f9daab for pr-125507 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrawsthorne%2Frust-bitcoin-cpu-miner" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner on toolchain 61a9ac64344e91d62f5496627ff363d177f9daab [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] finished tweaking git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] tweaked toml for git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing jrawsthorne/rust-bitcoin-cpu-miner against try#61a9ac64344e91d62f5496627ff363d177f9daab for pr-125507 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrawsthorne%2Frust-bitcoin-cpu-miner" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner on toolchain 61a9ac64344e91d62f5496627ff363d177f9daab [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] finished tweaking git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] tweaked toml for git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing jrawsthorne/rust-bitcoin-cpu-miner against try#61a9ac64344e91d62f5496627ff363d177f9daab for pr-125507 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrawsthorne%2Frust-bitcoin-cpu-miner" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner on toolchain 61a9ac64344e91d62f5496627ff363d177f9daab [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] finished tweaking git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] tweaked toml for git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing jrawsthorne/rust-bitcoin-cpu-miner against try#61a9ac64344e91d62f5496627ff363d177f9daab for pr-125507 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrawsthorne%2Frust-bitcoin-cpu-miner" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner on toolchain 61a9ac64344e91d62f5496627ff363d177f9daab [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] finished tweaking git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner [INFO] tweaked toml for git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/jrawsthorne/rust-bitcoin-cpu-miner already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.