[INFO] cloning repository https://github.com/seung-gumon/rust-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/seung-gumon/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseung-gumon%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseung-gumon%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f02e93fb265720781796dc111f18693ab56a05b0
[INFO] testing seung-gumon/rust-playground against beta-2025-09-21 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseung-gumon%2Frust-playground" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/seung-gumon/rust-playground
[INFO] finished tweaking git repo https://github.com/seung-gumon/rust-playground
[INFO] tweaked toml for git repo https://github.com/seung-gumon/rust-playground written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/seung-gumon/rust-playground on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/seung-gumon/rust-playground 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-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c05b9fae80445918d5c4afa3f1509c83d7a2c920cc64c474b30ce060e298ff61
[INFO] running `Command { std: "docker" "start" "-a" "c05b9fae80445918d5c4afa3f1509c83d7a2c920cc64c474b30ce060e298ff61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c05b9fae80445918d5c4afa3f1509c83d7a2c920cc64c474b30ce060e298ff61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c05b9fae80445918d5c4afa3f1509c83d7a2c920cc64c474b30ce060e298ff61", kill_on_drop: false }`
[INFO] [stdout] c05b9fae80445918d5c4afa3f1509c83d7a2c920cc64c474b30ce060e298ff61
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 213b26e2b452943ba2b9c6e01c1a6afd5120e68571e28a62856e68bfd2a429b0
[INFO] running `Command { std: "docker" "start" "-a" "213b26e2b452943ba2b9c6e01c1a6afd5120e68571e28a62856e68bfd2a429b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `age` and `animal_type` are never read
[INFO] [stdout]  --> src/main.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Animal {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 4 |       age : u8,
[INFO] [stdout]   |       ^^^
[INFO] [stdout] 5 |       animal_type : AnimalType,
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Animal` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Dog` is never constructed
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout]  9 | enum AnimalType {
[INFO] [stdout]    |      ---------- variant in this enum
[INFO] [stdout] 10 |       Cat,
[INFO] [stdout] 11 |       Dog,
[INFO] [stdout]    |       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AnimalType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "213b26e2b452943ba2b9c6e01c1a6afd5120e68571e28a62856e68bfd2a429b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "213b26e2b452943ba2b9c6e01c1a6afd5120e68571e28a62856e68bfd2a429b0", kill_on_drop: false }`
[INFO] [stdout] 213b26e2b452943ba2b9c6e01c1a6afd5120e68571e28a62856e68bfd2a429b0
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58998b06428e48552d4d730e1ccc47e4865dfce7423246795f20bb13c90e4827
[INFO] running `Command { std: "docker" "start" "-a" "58998b06428e48552d4d730e1ccc47e4865dfce7423246795f20bb13c90e4827", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `age` and `animal_type` are never read
[INFO] [stdout]  --> src/main.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Animal {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 4 |       age : u8,
[INFO] [stdout]   |       ^^^
[INFO] [stdout] 5 |       animal_type : AnimalType,
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Animal` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Dog` is never constructed
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout]  9 | enum AnimalType {
[INFO] [stdout]    |      ---------- variant in this enum
[INFO] [stdout] 10 |       Cat,
[INFO] [stdout] 11 |       Dog,
[INFO] [stdout]    |       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AnimalType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "58998b06428e48552d4d730e1ccc47e4865dfce7423246795f20bb13c90e4827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58998b06428e48552d4d730e1ccc47e4865dfce7423246795f20bb13c90e4827", kill_on_drop: false }`
[INFO] [stdout] 58998b06428e48552d4d730e1ccc47e4865dfce7423246795f20bb13c90e4827
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 05184ff92b4511903712ac4c0761a3e3dc90dd5e25f04c1b4bd5f554b83aa317
[INFO] running `Command { std: "docker" "start" "-a" "05184ff92b4511903712ac4c0761a3e3dc90dd5e25f04c1b4bd5f554b83aa317", kill_on_drop: false }`
[INFO] [stderr] warning: fields `age` and `animal_type` are never read
[INFO] [stderr]  --> src/main.rs:4:7
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Animal {
[INFO] [stderr]   |        ------ fields in this struct
[INFO] [stderr] 4 |       age : u8,
[INFO] [stderr]   |       ^^^
[INFO] [stderr] 5 |       animal_type : AnimalType,
[INFO] [stderr]   |       ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Animal` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Dog` is never constructed
[INFO] [stderr]   --> src/main.rs:11:7
[INFO] [stderr]    |
[INFO] [stderr]  9 | enum AnimalType {
[INFO] [stderr]    |      ---------- variant in this enum
[INFO] [stderr] 10 |       Cat,
[INFO] [stderr] 11 |       Dog,
[INFO] [stderr]    |       ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `AnimalType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-playground` (bin "rust-playground" test) generated 2 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_playground-1c7c9f428749a5bf)
[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" "05184ff92b4511903712ac4c0761a3e3dc90dd5e25f04c1b4bd5f554b83aa317", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05184ff92b4511903712ac4c0761a3e3dc90dd5e25f04c1b4bd5f554b83aa317", kill_on_drop: false }`
[INFO] [stdout] 05184ff92b4511903712ac4c0761a3e3dc90dd5e25f04c1b4bd5f554b83aa317