[INFO] updating cached repository https://github.com/csauve/slughorn
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/csauve/slughorn
[INFO] [stderr]    4b6b652..a99ff54  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a99ff544fe0dad73ec6887a39c4051c5a91efdd2
[INFO] checking csauve/slughorn against master#73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de for pr-68325
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcsauve%2Fslughorn" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/csauve/slughorn on toolchain 73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/csauve/slughorn
[INFO] finished tweaking git repo https://github.com/csauve/slughorn
[INFO] tweaked toml for git repo https://github.com/csauve/slughorn written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/csauve/slughorn already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ad70eb146e00139ae9da09c958f46a8298dd60084742ec33dd8f05fd825e00c1
[INFO] running `"docker" "start" "-a" "ad70eb146e00139ae9da09c958f46a8298dd60084742ec33dd8f05fd825e00c1"`
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking tokio-executor v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-timer v0.3.0-alpha.6
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling pin-project-internal v0.4.6
[INFO] [stderr]     Checking tokio v0.2.9
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking pin-project v0.4.6
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking h2 v0.2.1
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking hyper v0.13.1
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking bookworm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game/turn.rs:310:21
[INFO] [stderr]     |
[INFO] [stderr] 310 |                 let mut free_spaces: Vec<Coord> = Vec::from_iter(
[INFO] [stderr]     |                     ----^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `linear`
[INFO] [stderr]   --> src/game/offset.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn linear(self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `abs`
[INFO] [stderr]   --> src/game/offset.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn abs(&self) -> Offset {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cap_dist`
[INFO] [stderr]   --> src/game/offset.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn cap_dist(&mut self, dist: UnitAbs) -> Offset {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/game/path.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn new() -> Path {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `slide_end`
[INFO] [stderr]   --> src/game/path.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn slide_end(&mut self, offset: Offset) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop_start`
[INFO] [stderr]   --> src/game/path.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn pop_start(&mut self) -> Option<Coord> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `end`
[INFO] [stderr]   --> src/game/path.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn end(&self) -> Option<Coord> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `intersects`
[INFO] [stderr]   --> src/game/path.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn intersects(&self, coord: Coord) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `contains_node`
[INFO] [stderr]    --> src/game/path.rs:103:5
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn contains_node(&self, coord: Coord) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `tail`
[INFO] [stderr]   --> src/game/snake.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn tail(&self) -> Coord {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_snake_dist_matrix`
[INFO] [stderr]    --> src/game/turn.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     pub fn get_snake_dist_matrix(&self) -> HashMap<(usize, usize), UnitAbs> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `enemies`
[INFO] [stderr]    --> src/game/turn.rs:335:5
[INFO] [stderr]     |
[INFO] [stderr] 335 |     pub fn enemies(&self) -> &[Snake] {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `infer_you_move`
[INFO] [stderr]    --> src/game/turn.rs:360:5
[INFO] [stderr]     |
[INFO] [stderr] 360 |     pub fn infer_you_move(prev_turn: &Turn, next_turn: &Turn) -> Result<ApiDirection, &'static str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game/path.rs:232:13
[INFO] [stderr]     |
[INFO] [stderr] 232 |         let mut path = path![
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game/turn.rs:310:21
[INFO] [stderr]     |
[INFO] [stderr] 310 |                 let mut free_spaces: Vec<Coord> = Vec::from_iter(
[INFO] [stderr]     |                     ----^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `abs`
[INFO] [stderr]   --> src/game/offset.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn abs(&self) -> Offset {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/game/path.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn new() -> Path {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `contains_node`
[INFO] [stderr]    --> src/game/path.rs:103:5
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn contains_node(&self, coord: Coord) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_snake_dist_matrix`
[INFO] [stderr]    --> src/game/turn.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     pub fn get_snake_dist_matrix(&self) -> HashMap<(usize, usize), UnitAbs> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `infer_you_move`
[INFO] [stderr]    --> src/game/turn.rs:360:5
[INFO] [stderr]     |
[INFO] [stderr] 360 |     pub fn infer_you_move(prev_turn: &Turn, next_turn: &Turn) -> Result<ApiDirection, &'static str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 41s
[INFO] running `"docker" "inspect" "ad70eb146e00139ae9da09c958f46a8298dd60084742ec33dd8f05fd825e00c1"`
[INFO] running `"docker" "rm" "-f" "ad70eb146e00139ae9da09c958f46a8298dd60084742ec33dd8f05fd825e00c1"`
[INFO] [stdout] ad70eb146e00139ae9da09c958f46a8298dd60084742ec33dd8f05fd825e00c1