[INFO] cloning repository https://github.com/BG-RUST/snake_v3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BG-RUST/snake_v3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBG-RUST%2Fsnake_v3", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af73adb117a1ddf4bdd7b25cfead9cbbe9037186
[INFO] checking BG-RUST/snake_v3 against master#485ec3fbcc12fa14ef6596dabb125ad710499c9e for pr-157710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBG-RUST%2Fsnake_v3" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/BG-RUST/snake_v3
[INFO] finished tweaking git repo https://github.com/BG-RUST/snake_v3
[INFO] tweaked toml for git repo https://github.com/BG-RUST/snake_v3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/BG-RUST/snake_v3 on toolchain 485ec3fbcc12fa14ef6596dabb125ad710499c9e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+485ec3fbcc12fa14ef6596dabb125ad710499c9e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/BG-RUST/snake_v3 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" "+485ec3fbcc12fa14ef6596dabb125ad710499c9e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
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[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/game.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let mut rng = LcgRng::new(0xC0FFEE_u64);
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/event_loop.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn run_manual(mut game: Game) -> Result<(), String> {
[INFO] [stdout]    |                   ----^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:316:13
[INFO] [stdout]     |
[INFO] [stdout] 316 | ...   let mut rd_u32 = |o: &mut usize| -> u32 { let mut b=[0u8;4]; b.copy_from_slice(&buf[*o..*o+4]); *o+=4; u32::from_le_bytes(b) };
[INFO] [stdout]     |           ----^^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:317:13
[INFO] [stdout]     |
[INFO] [stdout] 317 | ...   let mut rd_u64 = |o: &mut usize| -> u64 { let mut b=[0u8;8]; b.copy_from_slice(&buf[*o..*o+8]); *o+=8; u64::from_le_bytes(b) };
[INFO] [stdout]     |           ----^^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/game.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let mut rng = LcgRng::new(0xC0FFEE_u64);
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |             let mut game = Game::new(w, h);
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/event_loop.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn run_manual(mut game: Game) -> Result<(), String> {
[INFO] [stdout]    |                   ----^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `write_to` and `read_from` are never used
[INFO] [stdout]    --> src/network.rs:335:8
[INFO] [stdout]     |
[INFO] [stdout] 204 | impl Net {
[INFO] [stdout]     | -------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 335 |     fn write_to(&self, _out: &mut Vec<u8>) {}
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 336 |     fn read_from(&mut self, _data: &[u8], _off: usize) -> usize { _off }
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:316:13
[INFO] [stdout]     |
[INFO] [stdout] 316 | ...   let mut rd_u32 = |o: &mut usize| -> u32 { let mut b=[0u8;4]; b.copy_from_slice(&buf[*o..*o+4]); *o+=4; u32::from_le_bytes(b) };
[INFO] [stdout]     |           ----^^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:317:13
[INFO] [stdout]     |
[INFO] [stdout] 317 | ...   let mut rd_u64 = |o: &mut usize| -> u64 { let mut b=[0u8;8]; b.copy_from_slice(&buf[*o..*o+8]); *o+=8; u64::from_le_bytes(b) };
[INFO] [stdout]     |           ----^^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |             let mut game = Game::new(w, h);
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `write_to` and `read_from` are never used
[INFO] [stdout]    --> src/network.rs:335:8
[INFO] [stdout]     |
[INFO] [stdout] 204 | impl Net {
[INFO] [stdout]     | -------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 335 |     fn write_to(&self, _out: &mut Vec<u8>) {}
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 336 |     fn read_from(&mut self, _data: &[u8], _off: usize) -> usize { _off }
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `Command { std: "docker" "inspect" "7b55c15a178eb2bb983c0d72c9e2a27e52db3c7aa9ad3d880b7ac5d913dbd12f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b55c15a178eb2bb983c0d72c9e2a27e52db3c7aa9ad3d880b7ac5d913dbd12f", kill_on_drop: false }`
[INFO] [stdout] 7b55c15a178eb2bb983c0d72c9e2a27e52db3c7aa9ad3d880b7ac5d913dbd12f
