[INFO] updating cached repository Crimack/snake.rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Crimack/snake.rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Crimack/snake.rs" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Crimack/snake.rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Crimack/snake.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Crimack/snake.rs" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Crimack/snake.rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Crimack/snake.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 642a100828cca72083fbf9643841fe9bac8bb6a3
[INFO] sha for GitHub repo Crimack/snake.rs: 642a100828cca72083fbf9643841fe9bac8bb6a3
[INFO] validating manifest of Crimack/snake.rs on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Crimack/snake.rs on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Crimack/snake.rs
[INFO] finished frobbing Crimack/snake.rs
[INFO] frobbed toml for Crimack/snake.rs written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Crimack/snake.rs/Cargo.toml
[INFO] started frobbing Crimack/snake.rs
[INFO] finished frobbing Crimack/snake.rs
[INFO] frobbed toml for Crimack/snake.rs written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Crimack/snake.rs/Cargo.toml
[INFO] crate Crimack/snake.rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Crimack/snake.rs against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-5/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Crimack/snake.rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] aa241b290c1f9395caccd63c0f2dc9d4e94eaa5c7123372493954b2ca54120a4
[INFO] running `"docker" "start" "-a" "aa241b290c1f9395caccd63c0f2dc9d4e94eaa5c7123372493954b2ca54120a4"`
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking rusttype v0.4.3
[INFO] [stderr]     Checking pistoncore-input v0.20.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking piston2d-graphics v0.26.0
[INFO] [stderr]     Checking rayon-core v1.4.0
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]     Checking pistoncore-window v0.31.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.36.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.45.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.14
[INFO] [stderr]     Checking piston v0.36.0
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.52.0
[INFO] [stderr]     Checking snake v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `snake::Snake`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use snake::Snake;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/app.rs:94:30
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn update(&mut self, args: &UpdateArgs) {
[INFO] [stderr]    |                              ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `snake`
[INFO] [stderr]   --> src/edibles.rs:23:23
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn eat(&mut self, snake: &mut Snake) {
[INFO] [stderr]    |                       ^^^^^ help: consider prefixing with an underscore: `_snake`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `snake`
[INFO] [stderr]   --> src/edibles.rs:51:23
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn eat(&mut self, snake: &mut Snake) {
[INFO] [stderr]    |                       ^^^^^ help: consider prefixing with an underscore: `_snake`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/app.rs:99:13
[INFO] [stderr]    |
[INFO] [stderr] 99 |         for mut f in &mut self.food {
[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/app.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         for mut p in &mut self.poison {
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `snake::Snake`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use snake::Snake;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/app.rs:94:30
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn update(&mut self, args: &UpdateArgs) {
[INFO] [stderr]    |                              ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `snake`
[INFO] [stderr]   --> src/edibles.rs:23:23
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn eat(&mut self, snake: &mut Snake) {
[INFO] [stderr]    |                       ^^^^^ help: consider prefixing with an underscore: `_snake`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `snake`
[INFO] [stderr]   --> src/edibles.rs:51:23
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn eat(&mut self, snake: &mut Snake) {
[INFO] [stderr]    |                       ^^^^^ help: consider prefixing with an underscore: `_snake`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/app.rs:99:13
[INFO] [stderr]    |
[INFO] [stderr] 99 |         for mut f in &mut self.food {
[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/app.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         for mut p in &mut self.poison {
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.57s
[INFO] running `"docker" "inspect" "aa241b290c1f9395caccd63c0f2dc9d4e94eaa5c7123372493954b2ca54120a4"`
[INFO] running `"docker" "rm" "-f" "aa241b290c1f9395caccd63c0f2dc9d4e94eaa5c7123372493954b2ca54120a4"`
[INFO] [stdout] aa241b290c1f9395caccd63c0f2dc9d4e94eaa5c7123372493954b2ca54120a4