[INFO] cloning repository https://github.com/VarSamLewis/SimpleCFD
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VarSamLewis/SimpleCFD" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVarSamLewis%2FSimpleCFD", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVarSamLewis%2FSimpleCFD'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 241f9e4eb7a1a5c2301a218106fa84a0cab8dccc
[INFO] checking VarSamLewis/SimpleCFD against 47574b82ff3fe9b0a45ff65a4fe189e295ecb748 for pr-160780
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVarSamLewis%2FSimpleCFD" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/VarSamLewis/SimpleCFD
[INFO] finished tweaking git repo https://github.com/VarSamLewis/SimpleCFD
[INFO] tweaked toml for git repo https://github.com/VarSamLewis/SimpleCFD written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/VarSamLewis/SimpleCFD on toolchain 47574b82ff3fe9b0a45ff65a4fe189e295ecb748
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+47574b82ff3fe9b0a45ff65a4fe189e295ecb748" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/VarSamLewis/SimpleCFD 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" "+47574b82ff3fe9b0a45ff65a4fe189e295ecb748" "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-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] eeec3254c231f46f94b4cbba5261f9a64b720af60d12e63960d8b763f0ed155c
[INFO] running `Command { std: "docker" "start" "eeec3254c231f46f94b4cbba5261f9a64b720af60d12e63960d8b763f0ed155c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eeec3254c231f46f94b4cbba5261f9a64b720af60d12e63960d8b763f0ed155c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "eeec3254c231f46f94b4cbba5261f9a64b720af60d12e63960d8b763f0ed155c" "/opt/rustwide/cargo-home/bin/cargo" "+47574b82ff3fe9b0a45ff65a4fe189e295ecb748" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eeec3254c231f46f94b4cbba5261f9a64b720af60d12e63960d8b763f0ed155c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "eeec3254c231f46f94b4cbba5261f9a64b720af60d12e63960d8b763f0ed155c" "/opt/rustwide/cargo-home/bin/cargo" "+47574b82ff3fe9b0a45ff65a4fe189e295ecb748" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking SimpleCFD v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/utils/grid.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut rng = rand::thread_rng(); // ✅ Get a random number generator
[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: unused variable: `rng`
[INFO] [stdout]   --> src/utils/grid.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut rng = rand::thread_rng(); // ✅ Get a random number generator
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Recovered` is never constructed
[INFO] [stdout]  --> src/utils/grid.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum HealthState {
[INFO] [stdout]   |          ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 7 |     Recovered,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `HealthState` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]   --> src/utils/grid.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Cell {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 12 |     pub state: HealthState,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Cell` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/utils/grid.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut rng = rand::thread_rng(); // ✅ Get a random number generator
[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: unused variable: `rng`
[INFO] [stdout]   --> src/utils/grid.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut rng = rand::thread_rng(); // ✅ Get a random number generator
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `HealthState` is never used
[INFO] [stdout]  --> src/utils/grid.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum HealthState {
[INFO] [stdout]   |          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cell` is never constructed
[INFO] [stdout]   --> src/utils/grid.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Cell {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Grid` is never constructed
[INFO] [stdout]   --> src/utils/grid.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Grid {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `init` is never used
[INFO] [stdout]   --> src/utils/grid.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Grid {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn init(grid_x: usize, grid_y: usize, infected_ratio: f64) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.85s
[INFO] running `Command { std: "docker" "inspect" "eeec3254c231f46f94b4cbba5261f9a64b720af60d12e63960d8b763f0ed155c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eeec3254c231f46f94b4cbba5261f9a64b720af60d12e63960d8b763f0ed155c", kill_on_drop: false }`
[INFO] [stdout] eeec3254c231f46f94b4cbba5261f9a64b720af60d12e63960d8b763f0ed155c