[INFO] cloning repository https://github.com/widmogrod/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/widmogrod/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwidmogrod%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwidmogrod%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 55d83ce6e3003ca60ae90b8989a771a7f2ce0770
[INFO] checking widmogrod/rust-playground against try#c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f for 2025-12-16-next-solver-global
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwidmogrod%2Frust-playground" "/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/widmogrod/rust-playground
[INFO] finished tweaking git repo https://github.com/widmogrod/rust-playground
[INFO] tweaked toml for git repo https://github.com/widmogrod/rust-playground written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/widmogrod/rust-playground on toolchain c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/widmogrod/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" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87ba332472273f53eebeefbf507a1c708d776699f9874ffebf6a4c80ff359e68
[INFO] running `Command { std: "docker" "start" "-a" "87ba332472273f53eebeefbf507a1c708d776699f9874ffebf6a4c80ff359e68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87ba332472273f53eebeefbf507a1c708d776699f9874ffebf6a4c80ff359e68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87ba332472273f53eebeefbf507a1c708d776699f9874ffebf6a4c80ff359e68", kill_on_drop: false }`
[INFO] [stdout] 87ba332472273f53eebeefbf507a1c708d776699f9874ffebf6a4c80ff359e68
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0728ceaa460727957fa4b5cc3ac4a2b8ffd585ef3dae2830a0800fcd3a38703
[INFO] running `Command { std: "docker" "start" "-a" "d0728ceaa460727957fa4b5cc3ac4a2b8ffd585ef3dae2830a0800fcd3a38703", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Item` is never constructed
[INFO] [stdout]  --> src/ply/ddd.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Item(u32, &'static str);
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PaymentMethod` is never constructed
[INFO] [stdout]  --> src/ply/ddd.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct PaymentMethod;
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Payed` is never used
[INFO] [stdout]  --> src/ply/ddd.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum Payed{}
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `UnpayedItems` is never used
[INFO] [stdout]   --> src/ply/ddd.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type UnpayedItems = (Vec<Item>, PhantomData<UnPayed>);
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UnPayed` is never used
[INFO] [stdout]   --> src/ply/ddd.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum UnPayed{}
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `PayedItems` is never used
[INFO] [stdout]   --> src/ply/ddd.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | type PayedItems = (Vec<Item>, PhantomData<Payed>);
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ShoppingCart` is never used
[INFO] [stdout]   --> src/ply/ddd.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum ShoppingCart {
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_cart` is never used
[INFO] [stdout]   --> src/ply/ddd.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn new_cart()  -> ShoppingCart {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `items_in_cart` is never used
[INFO] [stdout]   --> src/ply/ddd.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn items_in_cart(c: ShoppingCart)  -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_to_cart` is never used
[INFO] [stdout]   --> src/ply/ddd.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn add_to_cart(c: ShoppingCart, i: Item) -> ShoppingCart {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `PaidCart` is never constructed
[INFO] [stdout]   --> src/ply/ddd.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum ShoppingCart {
[INFO] [stdout]    |      ------------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 19 |     PaidCart(PayedItems, PaymentMethod)
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ShoppingCart` 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: function `items_in_cart` is never used
[INFO] [stdout]   --> src/ply/ddd.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn items_in_cart(c: ShoppingCart)  -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "d0728ceaa460727957fa4b5cc3ac4a2b8ffd585ef3dae2830a0800fcd3a38703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0728ceaa460727957fa4b5cc3ac4a2b8ffd585ef3dae2830a0800fcd3a38703", kill_on_drop: false }`
[INFO] [stdout] d0728ceaa460727957fa4b5cc3ac4a2b8ffd585ef3dae2830a0800fcd3a38703
