[INFO] cloning repository https://github.com/Funmatu/polyglot-compute-lab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Funmatu/polyglot-compute-lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFunmatu%2Fpolyglot-compute-lab", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a89246bddce6fcc495df70621680e47693e4628
[INFO] testing Funmatu/polyglot-compute-lab against beta-2026-01-20 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFunmatu%2Fpolyglot-compute-lab" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Funmatu/polyglot-compute-lab
[INFO] finished tweaking git repo https://github.com/Funmatu/polyglot-compute-lab
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[INFO] validating manifest of git repo https://github.com/Funmatu/polyglot-compute-lab on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "e36a7e32438b19df6c438a3a3fb532293feb1e276cf83d82a66f629578a98074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e36a7e32438b19df6c438a3a3fb532293feb1e276cf83d82a66f629578a98074", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7da969deb918ba2e84e19300902459649ce4ceb9a136868b6a15f3f3f8280b73
[INFO] running `Command { std: "docker" "start" "-a" "7da969deb918ba2e84e19300902459649ce4ceb9a136868b6a15f3f3f8280b73", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.104
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[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling futures-util v0.3.31
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[INFO] [stderr]    Compiling js-sys v0.3.83
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[INFO] [stderr]    Compiling futures v0.3.31
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[INFO] [stderr]    Compiling polyglot-compute-lab v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `insert` is never used
[INFO] [stdout]   --> src/lib.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl DoublyLinkedList {
[INFO] [stdout]    | --------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn insert(&mut self, index: usize, value: 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: method `insert` is never used
[INFO] [stdout]    --> src/lib.rs:187:8
[INFO] [stdout]     |
[INFO] [stdout] 130 | impl UnsafeDll {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 187 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `insert` is never used
[INFO] [stdout]    --> src/lib.rs:421:8
[INFO] [stdout]     |
[INFO] [stdout] 357 | impl BumpDll {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 421 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ZipperList` is never constructed
[INFO] [stdout]    --> src/lib.rs:509:8
[INFO] [stdout]     |
[INFO] [stdout] 509 | struct ZipperList {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `append`, `move_left`, `move_right`, `sum`, and `insert` are never used
[INFO] [stdout]    --> src/lib.rs:515:8
[INFO] [stdout]     |
[INFO] [stdout] 514 | impl ZipperList {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 515 |     fn new(capacity: usize) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 523 |     fn append(&mut self, value: i32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 528 |     fn move_left(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 535 |     fn move_right(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 541 |     fn sum(&self) -> i32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 549 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnsafeZipperList` is never constructed
[INFO] [stdout]    --> src/lib.rs:649:8
[INFO] [stdout]     |
[INFO] [stdout] 649 | struct UnsafeZipperList {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `insert` are never used
[INFO] [stdout]    --> src/lib.rs:655:8
[INFO] [stdout]     |
[INFO] [stdout] 654 | impl UnsafeZipperList {
[INFO] [stdout]     | --------------------- associated items in this implementation
[INFO] [stdout] 655 |     fn new(capacity: usize) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 663 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 50.18s
[INFO] running `Command { std: "docker" "inspect" "7da969deb918ba2e84e19300902459649ce4ceb9a136868b6a15f3f3f8280b73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7da969deb918ba2e84e19300902459649ce4ceb9a136868b6a15f3f3f8280b73", kill_on_drop: false }`
[INFO] [stdout] 7da969deb918ba2e84e19300902459649ce4ceb9a136868b6a15f3f3f8280b73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68984de3d613a43553fa9b9b65e383e07eaa5bd3723994f7e5d7d3bd483852cc
[INFO] running `Command { std: "docker" "start" "-a" "68984de3d613a43553fa9b9b65e383e07eaa5bd3723994f7e5d7d3bd483852cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling polyglot-compute-lab v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `insert` is never used
[INFO] [stdout]   --> src/lib.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl DoublyLinkedList {
[INFO] [stdout]    | --------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn insert(&mut self, index: usize, value: 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: method `insert` is never used
[INFO] [stdout]    --> src/lib.rs:187:8
[INFO] [stdout]     |
[INFO] [stdout] 130 | impl UnsafeDll {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 187 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `insert` is never used
[INFO] [stdout]    --> src/lib.rs:421:8
[INFO] [stdout]     |
[INFO] [stdout] 357 | impl BumpDll {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 421 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ZipperList` is never constructed
[INFO] [stdout]    --> src/lib.rs:509:8
[INFO] [stdout]     |
[INFO] [stdout] 509 | struct ZipperList {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `append`, `move_left`, `move_right`, `sum`, and `insert` are never used
[INFO] [stdout]    --> src/lib.rs:515:8
[INFO] [stdout]     |
[INFO] [stdout] 514 | impl ZipperList {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 515 |     fn new(capacity: usize) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 523 |     fn append(&mut self, value: i32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 528 |     fn move_left(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 535 |     fn move_right(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 541 |     fn sum(&self) -> i32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 549 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnsafeZipperList` is never constructed
[INFO] [stdout]    --> src/lib.rs:649:8
[INFO] [stdout]     |
[INFO] [stdout] 649 | struct UnsafeZipperList {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `insert` are never used
[INFO] [stdout]    --> src/lib.rs:655:8
[INFO] [stdout]     |
[INFO] [stdout] 654 | impl UnsafeZipperList {
[INFO] [stdout]     | --------------------- associated items in this implementation
[INFO] [stdout] 655 |     fn new(capacity: usize) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 663 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "68984de3d613a43553fa9b9b65e383e07eaa5bd3723994f7e5d7d3bd483852cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68984de3d613a43553fa9b9b65e383e07eaa5bd3723994f7e5d7d3bd483852cc", kill_on_drop: false }`
[INFO] [stdout] 68984de3d613a43553fa9b9b65e383e07eaa5bd3723994f7e5d7d3bd483852cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 49f29ed90fafcc8b04dd4610f23f8c05e17776dcfdd66de47a47291d1b64b9f2
[INFO] running `Command { std: "docker" "start" "-a" "49f29ed90fafcc8b04dd4610f23f8c05e17776dcfdd66de47a47291d1b64b9f2", kill_on_drop: false }`
[INFO] [stderr] warning: method `insert` is never used
[INFO] [stderr]   --> src/lib.rs:53:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | impl DoublyLinkedList {
[INFO] [stderr]    | --------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 53 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `insert` is never used
[INFO] [stderr]    --> src/lib.rs:187:8
[INFO] [stderr]     |
[INFO] [stderr] 130 | impl UnsafeDll {
[INFO] [stderr]     | -------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 187 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `insert` is never used
[INFO] [stderr]    --> src/lib.rs:421:8
[INFO] [stderr]     |
[INFO] [stderr] 357 | impl BumpDll {
[INFO] [stderr]     | ------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 421 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ZipperList` is never constructed
[INFO] [stderr]    --> src/lib.rs:509:8
[INFO] [stderr]     |
[INFO] [stderr] 509 | struct ZipperList {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `append`, `move_left`, `move_right`, `sum`, and `insert` are never used
[INFO] [stderr]    --> src/lib.rs:515:8
[INFO] [stderr]     |
[INFO] [stderr] 514 | impl ZipperList {
[INFO] [stderr]     | --------------- associated items in this implementation
[INFO] [stderr] 515 |     fn new(capacity: usize) -> Self {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 523 |     fn append(&mut self, value: i32) {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 528 |     fn move_left(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 535 |     fn move_right(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 541 |     fn sum(&self) -> i32 {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 549 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `UnsafeZipperList` is never constructed
[INFO] [stderr]    --> src/lib.rs:649:8
[INFO] [stderr]     |
[INFO] [stderr] 649 | struct UnsafeZipperList {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `insert` are never used
[INFO] [stderr]    --> src/lib.rs:655:8
[INFO] [stderr]     |
[INFO] [stderr] 654 | impl UnsafeZipperList {
[INFO] [stderr]     | --------------------- associated items in this implementation
[INFO] [stderr] 655 |     fn new(capacity: usize) -> Self {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 663 |     fn insert(&mut self, index: usize, value: i32) {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `polyglot-compute-lab` (lib test) generated 7 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/polyglot_compute_lab-ab51d3347f5d0807)
[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" "49f29ed90fafcc8b04dd4610f23f8c05e17776dcfdd66de47a47291d1b64b9f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49f29ed90fafcc8b04dd4610f23f8c05e17776dcfdd66de47a47291d1b64b9f2", kill_on_drop: false }`
[INFO] [stdout] 49f29ed90fafcc8b04dd4610f23f8c05e17776dcfdd66de47a47291d1b64b9f2
