[INFO] cloning repository https://github.com/Axmouth/percolation-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Axmouth/percolation-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAxmouth%2Fpercolation-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAxmouth%2Fpercolation-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 413fcbbb84920b810c592b58cbe8cebbabbe15bc
[INFO] checking Axmouth/percolation-rust against try#44f3504e96c944ae54fc72b5f5008f53f7eda001 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAxmouth%2Fpercolation-rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Axmouth/percolation-rust on toolchain 44f3504e96c944ae54fc72b5f5008f53f7eda001
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Axmouth/percolation-rust
[INFO] finished tweaking git repo https://github.com/Axmouth/percolation-rust
[INFO] tweaked toml for git repo https://github.com/Axmouth/percolation-rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Axmouth/percolation-rust 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" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "rm" "-f" "a09ca774494e4414c2354124687be78d08dde10186af599dcd1b0b0ce3275c21", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `btn`
[INFO] [stdout]   --> src/percolation_grid.rs:87:31
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn pressed(&mut self, btn: &Button) {}
[INFO] [stdout]    |                               ^^^ help: if this is intentional, prefix it with an underscore: `_btn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `btn`
[INFO] [stdout]   --> src/percolation_grid.rs:87:31
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn pressed(&mut self, btn: &Button) {}
[INFO] [stdout]    |                               ^^^ help: if this is intentional, prefix it with an underscore: `_btn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rows` is never read
[INFO] [stdout]   --> src/main.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut rows = String::new();
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `cols` is never read
[INFO] [stdout]   --> src/main.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut cols = String::new();
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rows` is never read
[INFO] [stdout]   --> src/main.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut rows = String::new();
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `reset_grid_state` and `convert_indice` are never used
[INFO] [stdout]   --> src/percolation_grid.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl PercolationGrid {
[INFO] [stdout]    | -------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 89 |     pub fn reset_grid_state(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 93 |     fn convert_indice(&self, row: u32, col: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `cols` is never read
[INFO] [stdout]   --> src/main.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut cols = String::new();
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `number_of_open_sites` is never used
[INFO] [stdout]    --> src/percolation.rs:132:12
[INFO] [stdout]     |
[INFO] [stdout] 12  | impl Percolation {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn number_of_open_sites(&self) -> u32 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `connected` is never used
[INFO] [stdout]   --> src/weighted_union_find.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 6  | impl WeightedUnionFind {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn connected(&mut self, p: u32, q: u32) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `reset_grid_state` and `convert_indice` are never used
[INFO] [stdout]   --> src/percolation_grid.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl PercolationGrid {
[INFO] [stdout]    | -------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 89 |     pub fn reset_grid_state(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 93 |     fn convert_indice(&self, row: u32, col: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `number_of_open_sites` is never used
[INFO] [stdout]    --> src/percolation.rs:132:12
[INFO] [stdout]     |
[INFO] [stdout] 12  | impl Percolation {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn number_of_open_sites(&self) -> u32 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `connected` is never used
[INFO] [stdout]   --> src/weighted_union_find.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 6  | impl WeightedUnionFind {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn connected(&mut self, p: u32, q: u32) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 38.89s
[INFO] running `Command { std: "docker" "inspect" "932fbdb87b016e46d7f4b876f44ceb84e898a3e9612c1dbb1d2860740b9a92cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "932fbdb87b016e46d7f4b876f44ceb84e898a3e9612c1dbb1d2860740b9a92cb", kill_on_drop: false }`
[INFO] [stdout] 932fbdb87b016e46d7f4b876f44ceb84e898a3e9612c1dbb1d2860740b9a92cb
