[INFO] cloning repository https://github.com/sbesselsen/rust-chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sbesselsen/rust-chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsbesselsen%2Frust-chess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsbesselsen%2Frust-chess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72eccbc1dea513ca60c938e49aa4d0a92b76bee5
[INFO] checking sbesselsen/rust-chess against try#87f2ecc56b5f6032b075c8934ebc77f28d57183c for pr-148190
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsbesselsen%2Frust-chess" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sbesselsen/rust-chess
[INFO] finished tweaking git repo https://github.com/sbesselsen/rust-chess
[INFO] tweaked toml for git repo https://github.com/sbesselsen/rust-chess written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sbesselsen/rust-chess on toolchain 87f2ecc56b5f6032b075c8934ebc77f28d57183c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+87f2ecc56b5f6032b075c8934ebc77f28d57183c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sbesselsen/rust-chess 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" "+87f2ecc56b5f6032b075c8934ebc77f28d57183c" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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_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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+87f2ecc56b5f6032b075c8934ebc77f28d57183c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 292a58e540c8023210f8f9f39aacd5bf29b51300a2ad3a94c0072d7bb6d7d0b3
[INFO] running `Command { std: "docker" "start" "-a" "292a58e540c8023210f8f9f39aacd5bf29b51300a2ad3a94c0072d7bb6d7d0b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "292a58e540c8023210f8f9f39aacd5bf29b51300a2ad3a94c0072d7bb6d7d0b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "292a58e540c8023210f8f9f39aacd5bf29b51300a2ad3a94c0072d7bb6d7d0b3", kill_on_drop: false }`
[INFO] [stdout] 292a58e540c8023210f8f9f39aacd5bf29b51300a2ad3a94c0072d7bb6d7d0b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+87f2ecc56b5f6032b075c8934ebc77f28d57183c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d63c30ab66347f8949c77069784760fcd72a32169ef366a850c8101edbc5fdae
[INFO] running `Command { std: "docker" "start" "-a" "d63c30ab66347f8949c77069784760fcd72a32169ef366a850c8101edbc5fdae", kill_on_drop: false }`
[INFO] [stderr]     Checking chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `is_checked`
[INFO] [stdout]  --> src/engine/mod.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use analysis::{ is_checked, is_threatened_by };
[INFO] [stdout]   |                     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `is_checked`
[INFO] [stdout]  --> src/engine/mod.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use analysis::{ is_checked, is_threatened_by };
[INFO] [stdout]   |                     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `schaap_index`
[INFO] [stdout]    --> src/tests.rs:261:7
[INFO] [stdout]     |
[INFO] [stdout] 261 |   let schaap_index = tree.add_child("schaap", 0);
[INFO] [stdout]     |       ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_schaap_index`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `aap1`
[INFO] [stdout]    --> src/tests.rs:262:7
[INFO] [stdout]     |
[INFO] [stdout] 262 |   let aap1 = tree.add_child("aap 1", aap_index);
[INFO] [stdout]     |       ^^^^ help: if this is intentional, prefix it with an underscore: `_aap1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `aap1`
[INFO] [stdout]    --> src/tests.rs:267:7
[INFO] [stdout]     |
[INFO] [stdout] 267 |   let aap1 = tree2.add_child("aap 1", aap_index);
[INFO] [stdout]     |       ^^^^ help: if this is intentional, prefix it with an underscore: `_aap1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]    --> src/tests.rs:297:7
[INFO] [stdout]     |
[INFO] [stdout] 297 |   let board = Board::parse_str("
[INFO] [stdout]     |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/util/grow_tree.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |             let len = items.len();
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `item`, `item_mut`, `root`, `parent`, and `map` are never used
[INFO] [stdout]   --> src/util/grow_tree.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T> GrowTree<T> {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn item(&self, index: usize) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn item_mut(&mut self, index: usize) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn root(&self) -> &T {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn parent(&self, index: usize) -> Option<(usize, &T)> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn map<F, O>(&self, f: F) -> GrowTree<O>
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `schaap_index`
[INFO] [stdout]    --> src/tests.rs:261:7
[INFO] [stdout]     |
[INFO] [stdout] 261 |   let schaap_index = tree.add_child("schaap", 0);
[INFO] [stdout]     |       ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_schaap_index`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `aap1`
[INFO] [stdout]    --> src/tests.rs:262:7
[INFO] [stdout]     |
[INFO] [stdout] 262 |   let aap1 = tree.add_child("aap 1", aap_index);
[INFO] [stdout]     |       ^^^^ help: if this is intentional, prefix it with an underscore: `_aap1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `aap1`
[INFO] [stdout]    --> src/tests.rs:267:7
[INFO] [stdout]     |
[INFO] [stdout] 267 |   let aap1 = tree2.add_child("aap 1", aap_index);
[INFO] [stdout]     |       ^^^^ help: if this is intentional, prefix it with an underscore: `_aap1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]    --> src/tests.rs:297:7
[INFO] [stdout]     |
[INFO] [stdout] 297 |   let board = Board::parse_str("
[INFO] [stdout]     |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/util/grow_tree.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |             let len = items.len();
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `item`, `item_mut`, `root`, `parent`, and `map` are never used
[INFO] [stdout]   --> src/util/grow_tree.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T> GrowTree<T> {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn item(&self, index: usize) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn item_mut(&mut self, index: usize) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn root(&self) -> &T {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn parent(&self, index: usize) -> Option<(usize, &T)> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn map<F, O>(&self, f: F) -> GrowTree<O>
[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 0.21s
[INFO] running `Command { std: "docker" "inspect" "d63c30ab66347f8949c77069784760fcd72a32169ef366a850c8101edbc5fdae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d63c30ab66347f8949c77069784760fcd72a32169ef366a850c8101edbc5fdae", kill_on_drop: false }`
[INFO] [stdout] d63c30ab66347f8949c77069784760fcd72a32169ef366a850c8101edbc5fdae
