[INFO] cloning repository https://github.com/mhdZhHan/rust-learning-through-activities
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mhdZhHan/rust-learning-through-activities" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmhdZhHan%2Frust-learning-through-activities", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmhdZhHan%2Frust-learning-through-activities'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 120b142e1fd800178a62e15905a09f6e8bf378f3
[INFO] checking mhdZhHan/rust-learning-through-activities against try#a3dffdb3a32d0dedc198f9de7d43173f3eb6727b for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmhdZhHan%2Frust-learning-through-activities" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mhdZhHan/rust-learning-through-activities 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/mhdZhHan/rust-learning-through-activities
[INFO] finished tweaking git repo https://github.com/mhdZhHan/rust-learning-through-activities
[INFO] tweaked toml for git repo https://github.com/mhdZhHan/rust-learning-through-activities written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mhdZhHan/rust-learning-through-activities 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 95550c5f48d83411becb66e706a7c30a0bc61181fbe5dc5edcb65738654f911a
[INFO] running `Command { std: "docker" "start" "-a" "95550c5f48d83411becb66e706a7c30a0bc61181fbe5dc5edcb65738654f911a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95550c5f48d83411becb66e706a7c30a0bc61181fbe5dc5edcb65738654f911a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95550c5f48d83411becb66e706a7c30a0bc61181fbe5dc5edcb65738654f911a", kill_on_drop: false }`
[INFO] [stdout] 95550c5f48d83411becb66e706a7c30a0bc61181fbe5dc5edcb65738654f911a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 656c61846a3a59ea49394122b797f71632865deb2b262e981d9e288c9ced425f
[INFO] running `Command { std: "docker" "start" "-a" "656c61846a3a59ea49394122b797f71632865deb2b262e981d9e288c9ced425f", kill_on_drop: false }`
[INFO] [stderr]     Checking activities v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Brown` is never constructed
[INFO] [stdout]   --> src/bin/a12.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Color {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 15 |     Black,
[INFO] [stdout] 16 |     Brown,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Red`, `Green`, and `Blue` are never constructed
[INFO] [stdout]   --> src/bin/a7.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Color {
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout] 15 |     Red,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 16 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 17 |     Blue,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let c = "black"; // avoid
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_favorite_color`
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let my_favorite_color = "black";
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_favorite_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Sweet` is never constructed
[INFO] [stdout]   --> src/bin/a8.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum Flavor {
[INFO] [stdout]    |      ------ variant in this enum
[INFO] [stdout] 14 |     Sweet,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Red`, `Green`, and `Blue` are never constructed
[INFO] [stdout]   --> src/bin/a7.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Color {
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout] 15 |     Red,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 16 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 17 |     Blue,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Sweet` is never constructed
[INFO] [stdout]   --> src/bin/a8.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum Flavor {
[INFO] [stdout]    |      ------ variant in this enum
[INFO] [stdout] 14 |     Sweet,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Brown` is never constructed
[INFO] [stdout]   --> src/bin/a12.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Color {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 15 |     Black,
[INFO] [stdout] 16 |     Brown,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let c = "black"; // avoid
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_favorite_color`
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let my_favorite_color = "black";
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_favorite_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "656c61846a3a59ea49394122b797f71632865deb2b262e981d9e288c9ced425f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "656c61846a3a59ea49394122b797f71632865deb2b262e981d9e288c9ced425f", kill_on_drop: false }`
[INFO] [stdout] 656c61846a3a59ea49394122b797f71632865deb2b262e981d9e288c9ced425f