[INFO] cloning repository https://github.com/chunhongZheng/substrate-learning-lesson4-05
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chunhongZheng/substrate-learning-lesson4-05" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FchunhongZheng%2Fsubstrate-learning-lesson4-05", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FchunhongZheng%2Fsubstrate-learning-lesson4-05'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ceec9536485ecb940c0f10ee527d1b2441d5c7a1
[INFO] testing chunhongZheng/substrate-learning-lesson4-05 against beta-2026-03-05 for beta-1.95-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FchunhongZheng%2Fsubstrate-learning-lesson4-05" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chunhongZheng/substrate-learning-lesson4-05
[INFO] finished tweaking git repo https://github.com/chunhongZheng/substrate-learning-lesson4-05
[INFO] tweaked toml for git repo https://github.com/chunhongZheng/substrate-learning-lesson4-05 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chunhongZheng/substrate-learning-lesson4-05 on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chunhongZheng/substrate-learning-lesson4-05 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" "+beta-2026-03-05" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 511703f24738db29ec62a723f115609f93510fda50c72fe134cfe1727c0846f4
[INFO] running `Command { std: "docker" "start" "-a" "511703f24738db29ec62a723f115609f93510fda50c72fe134cfe1727c0846f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "511703f24738db29ec62a723f115609f93510fda50c72fe134cfe1727c0846f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "511703f24738db29ec62a723f115609f93510fda50c72fe134cfe1727c0846f4", kill_on_drop: false }`
[INFO] [stdout] 511703f24738db29ec62a723f115609f93510fda50c72fe134cfe1727c0846f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54626457363ef74fb15e58cee9e154da475f5b6fffd92bfa95e33db6ce1a6ed2
[INFO] running `Command { std: "docker" "start" "-a" "54626457363ef74fb15e58cee9e154da475f5b6fffd92bfa95e33db6ce1a6ed2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-learn-lesson4-05 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `sumOperation` is never used
[INFO] [stdout]   --> src/main.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn sumOperation(x: &[u32])->Option<u32>{
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sumOperation` should have a snake case name
[INFO] [stdout]   --> src/main.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn sumOperation(x: &[u32])->Option<u32>{
[INFO] [stdout]    |    ^^^^^^^^^^^^ help: convert the identifier to snake case: `sum_operation`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sumResult` should have a snake case name
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let sumResult=x.iter().sum::<u32>();
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `sum_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "54626457363ef74fb15e58cee9e154da475f5b6fffd92bfa95e33db6ce1a6ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54626457363ef74fb15e58cee9e154da475f5b6fffd92bfa95e33db6ce1a6ed2", kill_on_drop: false }`
[INFO] [stdout] 54626457363ef74fb15e58cee9e154da475f5b6fffd92bfa95e33db6ce1a6ed2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a58fbbdd7eb80ea321ca0ddb6d3bdbbc75c1c02b4dcd4c7824c377d6c616e35c
[INFO] running `Command { std: "docker" "start" "-a" "a58fbbdd7eb80ea321ca0ddb6d3bdbbc75c1c02b4dcd4c7824c377d6c616e35c", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-learn-lesson4-05 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `sumOperation` is never used
[INFO] [stdout]   --> src/main.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn sumOperation(x: &[u32])->Option<u32>{
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sumOperation` should have a snake case name
[INFO] [stdout]   --> src/main.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn sumOperation(x: &[u32])->Option<u32>{
[INFO] [stdout]    |    ^^^^^^^^^^^^ help: convert the identifier to snake case: `sum_operation`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sumResult` should have a snake case name
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let sumResult=x.iter().sum::<u32>();
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `sum_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "a58fbbdd7eb80ea321ca0ddb6d3bdbbc75c1c02b4dcd4c7824c377d6c616e35c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a58fbbdd7eb80ea321ca0ddb6d3bdbbc75c1c02b4dcd4c7824c377d6c616e35c", kill_on_drop: false }`
[INFO] [stdout] a58fbbdd7eb80ea321ca0ddb6d3bdbbc75c1c02b4dcd4c7824c377d6c616e35c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6ffb692b343b10eae95c22221cbc959a9639a542b35a4cec412d37e63d06b014
[INFO] running `Command { std: "docker" "start" "-a" "6ffb692b343b10eae95c22221cbc959a9639a542b35a4cec412d37e63d06b014", kill_on_drop: false }`
[INFO] [stderr] warning: function `sumOperation` is never used
[INFO] [stderr]   --> src/main.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn sumOperation(x: &[u32])->Option<u32>{
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `sumOperation` should have a snake case name
[INFO] [stderr]   --> src/main.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn sumOperation(x: &[u32])->Option<u32>{
[INFO] [stderr]    |    ^^^^^^^^^^^^ help: convert the identifier to snake case: `sum_operation`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `sumResult` should have a snake case name
[INFO] [stderr]   --> src/main.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let sumResult=x.iter().sum::<u32>();
[INFO] [stderr]    |         ^^^^^^^^^ help: convert the identifier to snake case: `sum_result`
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-learn-lesson4-05` (bin "rust-learn-lesson4-05" test) generated 3 warnings
[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_learn_lesson4_05-a47e4cd0beb30d29)
[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" "6ffb692b343b10eae95c22221cbc959a9639a542b35a4cec412d37e63d06b014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ffb692b343b10eae95c22221cbc959a9639a542b35a4cec412d37e63d06b014", kill_on_drop: false }`
[INFO] [stdout] 6ffb692b343b10eae95c22221cbc959a9639a542b35a4cec412d37e63d06b014