[INFO] cloning repository https://github.com/gufeng20081010/substrate-lesson-4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gufeng20081010/substrate-lesson-4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgufeng20081010%2Fsubstrate-lesson-4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgufeng20081010%2Fsubstrate-lesson-4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8df6370f8126681726c09bb9ae536705f83628ef
[INFO] checking gufeng20081010/substrate-lesson-4 against try#a3dffdb3a32d0dedc198f9de7d43173f3eb6727b for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgufeng20081010%2Fsubstrate-lesson-4" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gufeng20081010/substrate-lesson-4 on toolchain a3dffdb3a32d0dedc198f9de7d43173f3eb6727b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gufeng20081010/substrate-lesson-4
[INFO] finished tweaking git repo https://github.com/gufeng20081010/substrate-lesson-4
[INFO] tweaked toml for git repo https://github.com/gufeng20081010/substrate-lesson-4 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/gufeng20081010/substrate-lesson-4 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" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b352fdeb28e615efa36c8b472a142927c15a593fd0c30323ab493890b7cb060e
[INFO] running `Command { std: "docker" "start" "-a" "b352fdeb28e615efa36c8b472a142927c15a593fd0c30323ab493890b7cb060e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b352fdeb28e615efa36c8b472a142927c15a593fd0c30323ab493890b7cb060e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b352fdeb28e615efa36c8b472a142927c15a593fd0c30323ab493890b7cb060e", kill_on_drop: false }`
[INFO] [stdout] b352fdeb28e615efa36c8b472a142927c15a593fd0c30323ab493890b7cb060e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 169664b0c6fd1f41498b6419212eba46cb6f0ab25670d9ce7b9f8a0e2ea0d004
[INFO] running `Command { std: "docker" "start" "-a" "169664b0c6fd1f41498b6419212eba46cb6f0ab25670d9ce7b9f8a0e2ea0d004", kill_on_drop: false }`
[INFO] [stderr]     Checking substrate-lesson4-2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Green` and `Yellow` are never constructed
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | enum TrafficLight {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 43 |     Red,
[INFO] [stdout] 44 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 45 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sumVal` should have a snake case name
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let sumVal = cal_sum(&v);
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case: `sum_val`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Green` and `Yellow` are never constructed
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | enum TrafficLight {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 43 |     Red,
[INFO] [stdout] 44 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 45 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sumVal` should have a snake case name
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let sumVal = cal_sum(&v);
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case: `sum_val`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "169664b0c6fd1f41498b6419212eba46cb6f0ab25670d9ce7b9f8a0e2ea0d004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "169664b0c6fd1f41498b6419212eba46cb6f0ab25670d9ce7b9f8a0e2ea0d004", kill_on_drop: false }`
[INFO] [stdout] 169664b0c6fd1f41498b6419212eba46cb6f0ab25670d9ce7b9f8a0e2ea0d004