[INFO] cloning repository https://github.com/jaypee92/Kopernikus_Rust_C-CodeChallenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jaypee92/Kopernikus_Rust_C-CodeChallenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaypee92%2FKopernikus_Rust_C-CodeChallenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaypee92%2FKopernikus_Rust_C-CodeChallenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 84f208d2a62cd36ffbca53150d0e7a4a09b6e8e6
[INFO] testing jaypee92/Kopernikus_Rust_C-CodeChallenge against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaypee92%2FKopernikus_Rust_C-CodeChallenge" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jaypee92/Kopernikus_Rust_C-CodeChallenge
[INFO] finished tweaking git repo https://github.com/jaypee92/Kopernikus_Rust_C-CodeChallenge
[INFO] tweaked toml for git repo https://github.com/jaypee92/Kopernikus_Rust_C-CodeChallenge written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jaypee92/Kopernikus_Rust_C-CodeChallenge on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jaypee92/Kopernikus_Rust_C-CodeChallenge 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-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58f56a11f7c5da0e12309cb1de0f91b6899497e0339b37cb18a4995676a0d07d
[INFO] running `Command { std: "docker" "start" "-a" "58f56a11f7c5da0e12309cb1de0f91b6899497e0339b37cb18a4995676a0d07d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58f56a11f7c5da0e12309cb1de0f91b6899497e0339b37cb18a4995676a0d07d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58f56a11f7c5da0e12309cb1de0f91b6899497e0339b37cb18a4995676a0d07d", kill_on_drop: false }`
[INFO] [stdout] 58f56a11f7c5da0e12309cb1de0f91b6899497e0339b37cb18a4995676a0d07d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 022cbc14b801a72f2e6c69dc8a2d11a79da4d710122edf3dcd90795b2b4dc51d
[INFO] running `Command { std: "docker" "start" "-a" "022cbc14b801a72f2e6c69dc8a2d11a79da4d710122edf3dcd90795b2b4dc51d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling kopernikus-code-challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> main.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern {
[INFO] [stdout]    | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> main.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut vehicles_ptr = vehicles.as_mut_ptr();
[INFO] [stdout]    |             ----^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> main.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let mut shared_vehicles_ptr = shared_lib_vehicles.as_mut_ptr();
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> main.rs:52:46
[INFO] [stdout]    |
[INFO] [stdout] 52 |         println!("Task 4: next_id in C: {}", next_id);
[INFO] [stdout]    |                                              ^^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.02s
[INFO] running `Command { std: "docker" "inspect" "022cbc14b801a72f2e6c69dc8a2d11a79da4d710122edf3dcd90795b2b4dc51d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "022cbc14b801a72f2e6c69dc8a2d11a79da4d710122edf3dcd90795b2b4dc51d", kill_on_drop: false }`
[INFO] [stdout] 022cbc14b801a72f2e6c69dc8a2d11a79da4d710122edf3dcd90795b2b4dc51d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fc98b7767f4ee52825d0c6f7b914eb1e0899879271aba5c9d8d3193e6409d46
[INFO] running `Command { std: "docker" "start" "-a" "4fc98b7767f4ee52825d0c6f7b914eb1e0899879271aba5c9d8d3193e6409d46", kill_on_drop: false }`
[INFO] [stderr]    Compiling kopernikus-code-challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> main.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern {
[INFO] [stdout]    | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> main.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut vehicles_ptr = vehicles.as_mut_ptr();
[INFO] [stdout]    |             ----^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> main.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let mut shared_vehicles_ptr = shared_lib_vehicles.as_mut_ptr();
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> main.rs:52:46
[INFO] [stdout]    |
[INFO] [stdout] 52 |         println!("Task 4: next_id in C: {}", next_id);
[INFO] [stdout]    |                                              ^^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "4fc98b7767f4ee52825d0c6f7b914eb1e0899879271aba5c9d8d3193e6409d46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fc98b7767f4ee52825d0c6f7b914eb1e0899879271aba5c9d8d3193e6409d46", kill_on_drop: false }`
[INFO] [stdout] 4fc98b7767f4ee52825d0c6f7b914eb1e0899879271aba5c9d8d3193e6409d46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ee18e159a33b7300ce669bb31ba3708017a37c371e8a3d991cf9307eb77b5258
[INFO] running `Command { std: "docker" "start" "-a" "ee18e159a33b7300ce669bb31ba3708017a37c371e8a3d991cf9307eb77b5258", kill_on_drop: false }`
[INFO] [stderr] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stderr]   --> main.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | extern {
[INFO] [stderr]    | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> main.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let mut vehicles_ptr = vehicles.as_mut_ptr();
[INFO] [stderr]    |             ----^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> main.rs:79:13
[INFO] [stderr]    |
[INFO] [stderr] 79 |         let mut shared_vehicles_ptr = shared_lib_vehicles.as_mut_ptr();
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: creating a shared reference to mutable static
[INFO] [stderr]   --> main.rs:52:46
[INFO] [stderr]    |
[INFO] [stderr] 52 |         println!("Task 4: next_id in C: {}", next_id);
[INFO] [stderr]    |                                              ^^^^^^^ shared reference to mutable static
[INFO] [stderr]    |
[INFO] [stderr]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stderr]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `kopernikus-code-challenge` (bin "kopernikus-challenge" test) generated 4 warnings (run `cargo fix --bin "kopernikus-challenge" -p kopernikus-code-challenge --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests main.rs (/opt/rustwide/target/debug/deps/kopernikus_challenge-edb5c8dc15baac8a)
[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" "ee18e159a33b7300ce669bb31ba3708017a37c371e8a3d991cf9307eb77b5258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee18e159a33b7300ce669bb31ba3708017a37c371e8a3d991cf9307eb77b5258", kill_on_drop: false }`
[INFO] [stdout] ee18e159a33b7300ce669bb31ba3708017a37c371e8a3d991cf9307eb77b5258
