[INFO] cloning repository https://github.com/yenkhoon/rust-gym
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yenkhoon/rust-gym" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyenkhoon%2Frust-gym", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyenkhoon%2Frust-gym'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c89dec2f543c8fbacd177ba484128e45be8db4d7
[INFO] checking yenkhoon/rust-gym against master#9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a for pr-138458
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyenkhoon%2Frust-gym" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yenkhoon/rust-gym on toolchain 9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yenkhoon/rust-gym
[INFO] finished tweaking git repo https://github.com/yenkhoon/rust-gym
[INFO] tweaked toml for git repo https://github.com/yenkhoon/rust-gym written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yenkhoon/rust-gym 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" "+9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61848239f956b3683f61067dc949e28933cd4e54dab98865559a8179341527bc
[INFO] running `Command { std: "docker" "start" "-a" "61848239f956b3683f61067dc949e28933cd4e54dab98865559a8179341527bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61848239f956b3683f61067dc949e28933cd4e54dab98865559a8179341527bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61848239f956b3683f61067dc949e28933cd4e54dab98865559a8179341527bc", kill_on_drop: false }`
[INFO] [stdout] 61848239f956b3683f61067dc949e28933cd4e54dab98865559a8179341527bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91e0d1b25982b84f1f6083b944b5fbaa1daacc9f887b6b16fd4ee9fe7649f32c
[INFO] running `Command { std: "docker" "start" "-a" "91e0d1b25982b84f1f6083b944b5fbaa1daacc9f887b6b16fd4ee9fe7649f32c", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-gym v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Darker` is never constructed
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum SkinColor {
[INFO] [stdout]   |      --------- variant in this enum
[INFO] [stdout] 6 |     Dark,
[INFO] [stdout] 7 |     Darker,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SkinColor` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Percent` is never constructed
[INFO] [stdout]  --> src/bin/a1.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Discount {
[INFO] [stdout]   |      -------- variant in this enum
[INFO] [stdout] 2 |     Percent(f32),
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Darker` is never constructed
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum SkinColor {
[INFO] [stdout]   |      --------- variant in this enum
[INFO] [stdout] 6 |     Dark,
[INFO] [stdout] 7 |     Darker,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SkinColor` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Percent` is never constructed
[INFO] [stdout]  --> src/bin/a1.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Discount {
[INFO] [stdout]   |      -------- variant in this enum
[INFO] [stdout] 2 |     Percent(f32),
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "91e0d1b25982b84f1f6083b944b5fbaa1daacc9f887b6b16fd4ee9fe7649f32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91e0d1b25982b84f1f6083b944b5fbaa1daacc9f887b6b16fd4ee9fe7649f32c", kill_on_drop: false }`
[INFO] [stdout] 91e0d1b25982b84f1f6083b944b5fbaa1daacc9f887b6b16fd4ee9fe7649f32c