[INFO] cloning repository https://github.com/billthemaxster/twenty_forty_eigth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/billthemaxster/twenty_forty_eigth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbillthemaxster%2Ftwenty_forty_eigth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbillthemaxster%2Ftwenty_forty_eigth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 086545286b7c37c11b2cb8f98b457addc89d8dfc
[INFO] checking billthemaxster/twenty_forty_eigth against try#0cb362313295507a2f4321c0e30cea0168f2fe71 for pr-138961-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbillthemaxster%2Ftwenty_forty_eigth" "/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/billthemaxster/twenty_forty_eigth
[INFO] finished tweaking git repo https://github.com/billthemaxster/twenty_forty_eigth
[INFO] tweaked toml for git repo https://github.com/billthemaxster/twenty_forty_eigth written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/billthemaxster/twenty_forty_eigth on toolchain 0cb362313295507a2f4321c0e30cea0168f2fe71
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/billthemaxster/twenty_forty_eigth 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" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking billthemaxster/twenty_forty_eigth against try#0cb362313295507a2f4321c0e30cea0168f2fe71 for pr-138961-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbillthemaxster%2Ftwenty_forty_eigth" "/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/billthemaxster/twenty_forty_eigth
[INFO] finished tweaking git repo https://github.com/billthemaxster/twenty_forty_eigth
[INFO] tweaked toml for git repo https://github.com/billthemaxster/twenty_forty_eigth written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/billthemaxster/twenty_forty_eigth on toolchain 0cb362313295507a2f4321c0e30cea0168f2fe71
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/billthemaxster/twenty_forty_eigth 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" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.19
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.9
[INFO] [stderr]   Downloaded syn v1.0.39
[INFO] [stderr]   Downloaded rstest v0.6.4
[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_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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e72b88f75f4366cb964e4d67f6e8cfc40d002424883f49abc2e9082dd35e06f
[INFO] running `Command { std: "docker" "start" "-a" "7e72b88f75f4366cb964e4d67f6e8cfc40d002424883f49abc2e9082dd35e06f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e72b88f75f4366cb964e4d67f6e8cfc40d002424883f49abc2e9082dd35e06f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e72b88f75f4366cb964e4d67f6e8cfc40d002424883f49abc2e9082dd35e06f", kill_on_drop: false }`
[INFO] [stdout] 7e72b88f75f4366cb964e4d67f6e8cfc40d002424883f49abc2e9082dd35e06f
[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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b10377ff175286438ac732bd698ad60f5e5c6cc7c6a6bcb61ba397d88c473a3
[INFO] running `Command { std: "docker" "start" "-a" "2b10377ff175286438ac732bd698ad60f5e5c6cc7c6a6bcb61ba397d88c473a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rstest v0.6.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking twenty_forty_eight v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `get_grid`, `perform_move`, `perform_move_down`, and `perform_shunt_down` are never used
[INFO] [stdout]   --> src/engine/game.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Game {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn get_grid(&self) -> &Grid {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn perform_move(&mut self, direction: MoveDirection) -> Result<(), &'static str> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn perform_move_down(&mut self) -> Result<Vec<Tile>, &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     fn perform_shunt_down(&mut self, column_index: u8) -> Result<bool, &'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: enum `MoveDirection` is never used
[INFO] [stdout]    --> src/engine/game.rs:119:10
[INFO] [stdout]     |
[INFO] [stdout] 119 | pub enum MoveDirection {
[INFO] [stdout]     |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/engine/grid.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Tile {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 5 |     pub value: u16,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Tile` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `move_tile` and `get_size` are never used
[INFO] [stdout]   --> src/engine/grid.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Grid {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn move_tile(&mut self, current_position: GridCoord, new_position: GridCoord) -> Result<(), &'static str> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub fn get_size(&self) -> u8{
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_equal` is never used
[INFO] [stdout]  --> src/engine/grid_coord.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl GridCoord {
[INFO] [stdout]   | -------------- method in this implementation
[INFO] [stdout] 8 |     pub fn is_equal(&self, other: &GridCoord) -> bool {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/engine/game.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 | /         match direction {
[INFO] [stdout] 70 | |             MoveDirection::Down => self.perform_move_down(),
[INFO] [stdout] 71 | |             _ => panic!(),
[INFO] [stdout] 72 | |         };
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let _ = match direction {
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_grid`, `perform_move`, `perform_move_down`, and `perform_shunt_down` are never used
[INFO] [stdout]   --> src/engine/game.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Game {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn get_grid(&self) -> &Grid {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn perform_move(&mut self, direction: MoveDirection) -> Result<(), &'static str> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn perform_move_down(&mut self) -> Result<Vec<Tile>, &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     fn perform_shunt_down(&mut self, column_index: u8) -> Result<bool, &'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: enum `MoveDirection` is never used
[INFO] [stdout]    --> src/engine/game.rs:119:10
[INFO] [stdout]     |
[INFO] [stdout] 119 | pub enum MoveDirection {
[INFO] [stdout]     |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `move_tile` is never used
[INFO] [stdout]   --> src/engine/grid.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Grid {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn move_tile(&mut self, current_position: GridCoord, new_position: GridCoord) -> Result<(), &'static str> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/engine/game.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 | /         match direction {
[INFO] [stdout] 70 | |             MoveDirection::Down => self.perform_move_down(),
[INFO] [stdout] 71 | |             _ => panic!(),
[INFO] [stdout] 72 | |         };
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let _ = match direction {
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.55s
[INFO] running `Command { std: "docker" "inspect" "2b10377ff175286438ac732bd698ad60f5e5c6cc7c6a6bcb61ba397d88c473a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b10377ff175286438ac732bd698ad60f5e5c6cc7c6a6bcb61ba397d88c473a3", kill_on_drop: false }`
[INFO] [stdout] 2b10377ff175286438ac732bd698ad60f5e5c6cc7c6a6bcb61ba397d88c473a3
