[INFO] cloning repository https://github.com/omagdy7/five-programming-problems
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/omagdy7/five-programming-problems" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fomagdy7%2Ffive-programming-problems", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fomagdy7%2Ffive-programming-problems'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 338a2a79f033344c7f05c9f3db0b4da9584540f2
[INFO] testing omagdy7/five-programming-problems against beta-2025-10-28 for beta-1.92-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fomagdy7%2Ffive-programming-problems" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/omagdy7/five-programming-problems
[INFO] finished tweaking git repo https://github.com/omagdy7/five-programming-problems
[INFO] tweaked toml for git repo https://github.com/omagdy7/five-programming-problems written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/omagdy7/five-programming-problems on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/omagdy7/five-programming-problems 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-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5738a38a12d064952ac79e3175be3c6674458ab1897dc9be7d1b53a82916be24
[INFO] running `Command { std: "docker" "start" "-a" "5738a38a12d064952ac79e3175be3c6674458ab1897dc9be7d1b53a82916be24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5738a38a12d064952ac79e3175be3c6674458ab1897dc9be7d1b53a82916be24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5738a38a12d064952ac79e3175be3c6674458ab1897dc9be7d1b53a82916be24", kill_on_drop: false }`
[INFO] [stdout] 5738a38a12d064952ac79e3175be3c6674458ab1897dc9be7d1b53a82916be24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 950d1e57ba624c0a3073cc54e30bcd8fd282fa07506a7430ea26eec3570e7db6
[INFO] running `Command { std: "docker" "start" "-a" "950d1e57ba624c0a3073cc54e30bcd8fd282fa07506a7430ea26eec3570e7db6", kill_on_drop: false }`
[INFO] [stderr]    Compiling five-programming-problems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/problem5.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     op: &str,
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_for` is never used
[INFO] [stdout]  --> src/problem1.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sum_for(array: &Vec<i32>) -> i32 {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_while` is never used
[INFO] [stdout]  --> src/problem1.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn sum_while(array: &Vec<i32>) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "950d1e57ba624c0a3073cc54e30bcd8fd282fa07506a7430ea26eec3570e7db6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "950d1e57ba624c0a3073cc54e30bcd8fd282fa07506a7430ea26eec3570e7db6", kill_on_drop: false }`
[INFO] [stdout] 950d1e57ba624c0a3073cc54e30bcd8fd282fa07506a7430ea26eec3570e7db6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5aa44791a9461e89442e097828627b248cafaeb352bb152121c9e8757599d5f
[INFO] running `Command { std: "docker" "start" "-a" "d5aa44791a9461e89442e097828627b248cafaeb352bb152121c9e8757599d5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling five-programming-problems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/problem5.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     op: &str,
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "d5aa44791a9461e89442e097828627b248cafaeb352bb152121c9e8757599d5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5aa44791a9461e89442e097828627b248cafaeb352bb152121c9e8757599d5f", kill_on_drop: false }`
[INFO] [stdout] d5aa44791a9461e89442e097828627b248cafaeb352bb152121c9e8757599d5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e2b5393ef9d7dbdb0be2b79cf6960cc7c30bd11c1fb4a9337418b22582e77623
[INFO] running `Command { std: "docker" "start" "-a" "e2b5393ef9d7dbdb0be2b79cf6960cc7c30bd11c1fb4a9337418b22582e77623", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]   --> src/problem5.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     op: &str,
[INFO] [stderr]    |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `five-programming-problems` (bin "problem5" test) generated 1 warning (run `cargo fix --bin "problem5" -p five-programming-problems --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/problem1.rs (/opt/rustwide/target/debug/deps/problem1-b1e987d89823ffc6)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::test_empty ... ok
[INFO] [stdout] test test::test_positive ... ok
[INFO] [stdout] test test::test_negative ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/problem2.rs (/opt/rustwide/target/debug/deps/problem2-38af7203f7491c54)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::test_combine_arr ... ok
[INFO] [stdout] test test::test_empty ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/problem3.rs (/opt/rustwide/target/debug/deps/problem3-432b22c46ca56d83)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/problem4.rs (/opt/rustwide/target/debug/deps/problem4-dac279645761487d)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::test_one ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/problem5.rs (/opt/rustwide/target/debug/deps/problem5-35de73462ceef132)
[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" "e2b5393ef9d7dbdb0be2b79cf6960cc7c30bd11c1fb4a9337418b22582e77623", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2b5393ef9d7dbdb0be2b79cf6960cc7c30bd11c1fb4a9337418b22582e77623", kill_on_drop: false }`
[INFO] [stdout] e2b5393ef9d7dbdb0be2b79cf6960cc7c30bd11c1fb4a9337418b22582e77623