[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 master#7c4ac0603e9ee5295bc802c90575391288a69a8a for pr-124728
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwidmogrod%2Frust-playground" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/widmogrod/rust-playground on toolchain 7c4ac0603e9ee5295bc802c90575391288a69a8a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7c4ac0603e9ee5295bc802c90575391288a69a8a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-1-tc1/source/Cargo.toml
[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" "+7c4ac0603e9ee5295bc802c90575391288a69a8a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking widmogrod/rust-playground against try#98ebbae35138252af77610c20ea5a5e8bf68d639 for pr-124728
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwidmogrod%2Frust-playground" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/widmogrod/rust-playground on toolchain 98ebbae35138252af77610c20ea5a5e8bf68d639
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-1-tc2/source/Cargo.toml
[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" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f522b72a742b20f7705bd59aaec14f92651a4676fe5e0043e4face552d9ae1ce
[INFO] running `Command { std: "docker" "start" "-a" "f522b72a742b20f7705bd59aaec14f92651a4676fe5e0043e4face552d9ae1ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f522b72a742b20f7705bd59aaec14f92651a4676fe5e0043e4face552d9ae1ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f522b72a742b20f7705bd59aaec14f92651a4676fe5e0043e4face552d9ae1ce", kill_on_drop: false }`
[INFO] [stdout] f522b72a742b20f7705bd59aaec14f92651a4676fe5e0043e4face552d9ae1ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fd965fc373fd0854724699ffbf0344406d7d57386bdfca399b5359de9082373
[INFO] running `Command { std: "docker" "start" "-a" "7fd965fc373fd0854724699ffbf0344406d7d57386bdfca399b5359de9082373", kill_on_drop: false }`
[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)]` 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)]` 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] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "7fd965fc373fd0854724699ffbf0344406d7d57386bdfca399b5359de9082373", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fd965fc373fd0854724699ffbf0344406d7d57386bdfca399b5359de9082373", kill_on_drop: false }`
[INFO] [stdout] 7fd965fc373fd0854724699ffbf0344406d7d57386bdfca399b5359de9082373