[INFO] cloning repository https://github.com/MU270146A/rust-pratice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MU270146A/rust-pratice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMU270146A%2Frust-pratice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMU270146A%2Frust-pratice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 352be2fc02f71cf5253e57d4c22af6e2986ee23d
[INFO] testing MU270146A/rust-pratice against beta-2025-04-13 for beta-1.87-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMU270146A%2Frust-pratice" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MU270146A/rust-pratice on toolchain beta-2025-04-13
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-04-13" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MU270146A/rust-pratice
[INFO] finished tweaking git repo https://github.com/MU270146A/rust-pratice
[INFO] tweaked toml for git repo https://github.com/MU270146A/rust-pratice written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/MU270146A/rust-pratice 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-2025-04-13" "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
[ERROR] error running command: no output for 300 seconds
[INFO] testing MU270146A/rust-pratice against beta-2025-04-13 for beta-1.87-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMU270146A%2Frust-pratice" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MU270146A/rust-pratice on toolchain beta-2025-04-13
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-04-13" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MU270146A/rust-pratice
[INFO] finished tweaking git repo https://github.com/MU270146A/rust-pratice
[INFO] tweaked toml for git repo https://github.com/MU270146A/rust-pratice written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/MU270146A/rust-pratice 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-2025-04-13" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dec64b35fd96e3f4fb299de2c9418c611a0edccaf9a09b3f40930d2521023818
[INFO] running `Command { std: "docker" "start" "-a" "dec64b35fd96e3f4fb299de2c9418c611a0edccaf9a09b3f40930d2521023818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dec64b35fd96e3f4fb299de2c9418c611a0edccaf9a09b3f40930d2521023818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dec64b35fd96e3f4fb299de2c9418c611a0edccaf9a09b3f40930d2521023818", kill_on_drop: false }`
[INFO] [stdout] dec64b35fd96e3f4fb299de2c9418c611a0edccaf9a09b3f40930d2521023818
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41f4c4bce3fbcd44832831a2a6fc7fd60dc42d34623cd43514d7485e403b0c9c
[INFO] running `Command { std: "docker" "start" "-a" "41f4c4bce3fbcd44832831a2a6fc7fd60dc42d34623cd43514d7485e403b0c9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `take` is never used
[INFO] [stdout]   --> src/ownership.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn take(s: &String) -> &String{
[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 0.16s
[INFO] running `Command { std: "docker" "inspect" "41f4c4bce3fbcd44832831a2a6fc7fd60dc42d34623cd43514d7485e403b0c9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41f4c4bce3fbcd44832831a2a6fc7fd60dc42d34623cd43514d7485e403b0c9c", kill_on_drop: false }`
[INFO] [stdout] 41f4c4bce3fbcd44832831a2a6fc7fd60dc42d34623cd43514d7485e403b0c9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54bda31e525e63a98d9d0277b28804d061662171bd3726381ca26c9f56900ee3
[INFO] running `Command { std: "docker" "start" "-a" "54bda31e525e63a98d9d0277b28804d061662171bd3726381ca26c9f56900ee3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `take` is never used
[INFO] [stdout]   --> src/ownership.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn take(s: &String) -> &String{
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]   --> src/types.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let first = names.get(0).unwrap();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second`
[INFO] [stdout]   --> src/types.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let second = &names[0]; //not safe
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `hobby` is never read
[INFO] [stdout]   --> src/types.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     struct Person {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 22 |         hobby: String
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "54bda31e525e63a98d9d0277b28804d061662171bd3726381ca26c9f56900ee3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54bda31e525e63a98d9d0277b28804d061662171bd3726381ca26c9f56900ee3", kill_on_drop: false }`
[INFO] [stdout] 54bda31e525e63a98d9d0277b28804d061662171bd3726381ca26c9f56900ee3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b850ce2b3faf049ed47bb7f016f9599f0df5b43c768a3c3bb6a38e71435467ae
[INFO] running `Command { std: "docker" "start" "-a" "b850ce2b3faf049ed47bb7f016f9599f0df5b43c768a3c3bb6a38e71435467ae", kill_on_drop: false }`
[INFO] [stderr] warning: function `take` is never used
[INFO] [stderr]   --> src/ownership.rs:10:4
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn take(s: &String) -> &String{
[INFO] [stderr]    |    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-practice` (lib) generated 1 warning
[INFO] [stderr] warning: unused variable: `first`
[INFO] [stderr]   --> src/types.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let first = names.get(0).unwrap();
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `second`
[INFO] [stderr]   --> src/types.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let second = &names[0]; //not safe
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second`
[INFO] [stderr] 
[INFO] [stderr] warning: field `hobby` is never read
[INFO] [stderr]   --> src/types.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     struct Person {
[INFO] [stderr]    |            ------ field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 22 |         hobby: String
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-practice` (lib test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_practice-56238e27237ab6da)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test ownership::borrowing_value ... ok
[INFO] [stdout] test types::string ... ok
[INFO] [stdout] test types::make_enum ... ok
[INFO] [stdout] test types::make_struct ... ok
[INFO] [stdout] test types::arr ... ok
[INFO] [stdout] test ownership::take_ownership ... ok
[INFO] [stdout] test ownership::reference ... ok
[INFO] [stdout] test ownership::mutability ... ok
[INFO] [stdout] test variables::destructuring ... ok
[INFO] [stdout] test variables::shadowing ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_practice-10029c659a4d9200)
[INFO] [stderr]    Doc-tests rust_practice
[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] [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" "b850ce2b3faf049ed47bb7f016f9599f0df5b43c768a3c3bb6a38e71435467ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b850ce2b3faf049ed47bb7f016f9599f0df5b43c768a3c3bb6a38e71435467ae", kill_on_drop: false }`
[INFO] [stdout] b850ce2b3faf049ed47bb7f016f9599f0df5b43c768a3c3bb6a38e71435467ae