[INFO] cloning repository https://github.com/qin-boyang/rust-design-pattern
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qin-boyang/rust-design-pattern" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqin-boyang%2Frust-design-pattern", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqin-boyang%2Frust-design-pattern'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de97e88df2821b34b3170363b4aa7e44a8d8aee0
[INFO] checking qin-boyang/rust-design-pattern against try#b10dae361a61486cfbdcd3aae3877ee17e00d192 for pr-153912
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqin-boyang%2Frust-design-pattern" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/qin-boyang/rust-design-pattern
[INFO] finished tweaking git repo https://github.com/qin-boyang/rust-design-pattern
[INFO] tweaked toml for git repo https://github.com/qin-boyang/rust-design-pattern written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/qin-boyang/rust-design-pattern on toolchain b10dae361a61486cfbdcd3aae3877ee17e00d192
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b10dae361a61486cfbdcd3aae3877ee17e00d192" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/qin-boyang/rust-design-pattern 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" "+b10dae361a61486cfbdcd3aae3877ee17e00d192" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking qin-boyang/rust-design-pattern against try#b10dae361a61486cfbdcd3aae3877ee17e00d192 for pr-153912
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqin-boyang%2Frust-design-pattern" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/qin-boyang/rust-design-pattern
[INFO] finished tweaking git repo https://github.com/qin-boyang/rust-design-pattern
[INFO] tweaked toml for git repo https://github.com/qin-boyang/rust-design-pattern written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/qin-boyang/rust-design-pattern on toolchain b10dae361a61486cfbdcd3aae3877ee17e00d192
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b10dae361a61486cfbdcd3aae3877ee17e00d192" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/qin-boyang/rust-design-pattern 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" "+b10dae361a61486cfbdcd3aae3877ee17e00d192" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+b10dae361a61486cfbdcd3aae3877ee17e00d192" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44ebe811e5063c3ed203e10176761c938092ee3b32c5aaa5cab782874ea94416
[INFO] running `Command { std: "docker" "start" "-a" "44ebe811e5063c3ed203e10176761c938092ee3b32c5aaa5cab782874ea94416", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44ebe811e5063c3ed203e10176761c938092ee3b32c5aaa5cab782874ea94416", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44ebe811e5063c3ed203e10176761c938092ee3b32c5aaa5cab782874ea94416", kill_on_drop: false }`
[INFO] [stdout] 44ebe811e5063c3ed203e10176761c938092ee3b32c5aaa5cab782874ea94416
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b10dae361a61486cfbdcd3aae3877ee17e00d192" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c502eb05b38f91007e6d87dc3317b1255b985b140a273c3e248c72eeb4a9a9d0
[INFO] running `Command { std: "docker" "start" "-a" "c502eb05b38f91007e6d87dc3317b1255b985b140a273c3e248c72eeb4a9a9d0", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-design-pattern v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `LotLevel` is never used
[INFO] [stdout]  --> src/parking/parking_strategy_factory.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum LotLevel {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ParkingStrategy` is never used
[INFO] [stdout]  --> src/parking/parking_strategy_factory.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait ParkingStrategy {
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EconomyParkingStrategy` is never constructed
[INFO] [stdout]  --> src/parking/parking_strategy_factory.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct EconomyParkingStrategy;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LuxuryParkingStrategy` is never constructed
[INFO] [stdout]   --> src/parking/parking_strategy_factory.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct LuxuryParkingStrategy;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParkingLot` is never constructed
[INFO] [stdout]   --> src/parking/parking_strategy_factory.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct ParkingLot {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `park` are never used
[INFO] [stdout]   --> src/parking/parking_strategy_factory.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl ParkingLot {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 28 |     fn new(capacity: u64, strategy: Box<dyn ParkingStrategy>) -> ParkingLot {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn park(&mut self, vehicle: String) -> Result<ParkingTicket, String> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParkingTicket` is never constructed
[INFO] [stdout]   --> src/parking/parking_strategy_factory.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | struct ParkingTicket {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MallParkingLotFactory` is never constructed
[INFO] [stdout]   --> src/parking/parking_strategy_factory.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct MallParkingLotFactory;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `create` is never used
[INFO] [stdout]   --> src/parking/parking_strategy_factory.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl MallParkingLotFactory {
[INFO] [stdout]    | -------------------------- associated function in this implementation
[INFO] [stdout] 52 |     fn create(level: LotLevel, capacity: u64) -> ParkingLot {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ParkingSpace` is never used
[INFO] [stdout]  --> src/parking/parking_state.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum ParkingSpace {
[INFO] [stdout]   |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParkingLot` is never constructed
[INFO] [stdout]  --> src/parking/parking_state.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct ParkingLot {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set_out_of_service`, and `park` are never used
[INFO] [stdout]   --> src/parking/parking_state.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl ParkingLot {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 12 |     fn new(capacity: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn set_out_of_service(&mut self, index: usize, reason: String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn park(&mut self, plate: String) -> Result<ParkingTicket, String> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParkingTicket` is never constructed
[INFO] [stdout]   --> src/parking/parking_state.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct ParkingTicket {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MallParkingLotFactory` is never constructed
[INFO] [stdout]   --> src/parking/parking_state.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct MallParkingLotFactory;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `create` is never used
[INFO] [stdout]   --> src/parking/parking_state.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl MallParkingLotFactory {
[INFO] [stdout]    | -------------------------- associated function in this implementation
[INFO] [stdout] 34 |     fn create(capacity: usize) -> ParkingLot {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PaymentMethod` is never used
[INFO] [stdout]  --> src/payment/payment_factory.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum PaymentMethod {
[INFO] [stdout]   |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pay` is never used
[INFO] [stdout]  --> src/payment/payment_factory.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl PaymentMethod {
[INFO] [stdout]   | ------------------ method in this implementation
[INFO] [stdout] 8 |     fn pay(&self){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PaymentMethodFactory` is never constructed
[INFO] [stdout]   --> src/payment/payment_factory.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct PaymentMethodFactory;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `create` is never used
[INFO] [stdout]   --> src/payment/payment_factory.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl PaymentMethodFactory {
[INFO] [stdout]    | ------------------------- method in this implementation
[INFO] [stdout] 19 |     fn create(&self, config: PaymentConfig) -> PaymentMethod {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PaymentConfig` is never used
[INFO] [stdout]   --> src/payment/payment_factory.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | enum PaymentConfig {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vehicle` is never read
[INFO] [stdout]   --> src/parking/parking_strategy_factory.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | struct ParkingTicket {
[INFO] [stdout]    |        ------------- field in this struct
[INFO] [stdout] 46 |     vehicle: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/parking/parking_state.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Occupied(String),
[INFO] [stdout]   |     -------- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Occupied(String),
[INFO] [stdout] 4 +     Occupied(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/parking/parking_state.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 |     OutOfService(String),
[INFO] [stdout]   |     ------------ ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 5 -     OutOfService(String),
[INFO] [stdout] 5 +     OutOfService(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "c502eb05b38f91007e6d87dc3317b1255b985b140a273c3e248c72eeb4a9a9d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c502eb05b38f91007e6d87dc3317b1255b985b140a273c3e248c72eeb4a9a9d0", kill_on_drop: false }`
[INFO] [stdout] c502eb05b38f91007e6d87dc3317b1255b985b140a273c3e248c72eeb4a9a9d0