[INFO] cloning repository https://github.com/ASwitchCase/menu-system
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ASwitchCase/menu-system" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FASwitchCase%2Fmenu-system", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FASwitchCase%2Fmenu-system'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 20e2021bd7d618efc3ab526ebd3a91f7e08d9f2e
[INFO] checking ASwitchCase/menu-system against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FASwitchCase%2Fmenu-system" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ASwitchCase/menu-system
[INFO] finished tweaking git repo https://github.com/ASwitchCase/menu-system
[INFO] tweaked toml for git repo https://github.com/ASwitchCase/menu-system written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ASwitchCase/menu-system on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ASwitchCase/menu-system 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 695b24120989e173c71a22bbc759a8f995750fbc0c2e4744d137c08340daefa6
[INFO] running `Command { std: "docker" "start" "-a" "695b24120989e173c71a22bbc759a8f995750fbc0c2e4744d137c08340daefa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "695b24120989e173c71a22bbc759a8f995750fbc0c2e4744d137c08340daefa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "695b24120989e173c71a22bbc759a8f995750fbc0c2e4744d137c08340daefa6", kill_on_drop: false }`
[INFO] [stdout] 695b24120989e173c71a22bbc759a8f995750fbc0c2e4744d137c08340daefa6
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6941ada57c7b4ff54f45777606e9c6dffd9f9b02b4566c518d8d30769069e150
[INFO] running `Command { std: "docker" "start" "-a" "6941ada57c7b4ff54f45777606e9c6dffd9f9b02b4566c518d8d30769069e150", kill_on_drop: false }`
[INFO] [stderr]     Checking menu-system0-0-1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `back` is never used
[INFO] [stdout]   --> src/menu_system.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl MenuTree {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn back(&mut self) -> MenuNode {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `back` is never used
[INFO] [stdout]   --> src/menu_system.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl MenuTree {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn back(&mut self) -> MenuNode {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "6941ada57c7b4ff54f45777606e9c6dffd9f9b02b4566c518d8d30769069e150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6941ada57c7b4ff54f45777606e9c6dffd9f9b02b4566c518d8d30769069e150", kill_on_drop: false }`
[INFO] [stdout] 6941ada57c7b4ff54f45777606e9c6dffd9f9b02b4566c518d8d30769069e150
