[INFO] fetching crate sacrifice 0.3.0-alpha.3...
[INFO] checking sacrifice-0.3.0-alpha.3 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate sacrifice 0.3.0-alpha.3 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate sacrifice 0.3.0-alpha.3
[INFO] finished tweaking crates.io crate sacrifice 0.3.0-alpha.3
[INFO] tweaked toml for crates.io crate sacrifice 0.3.0-alpha.3 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sacrifice 0.3.0-alpha.3 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sacrifice 0.3.0-alpha.3 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded circular v0.3.0
[INFO] [stderr]   Downloaded pgn-reader v0.25.0
[INFO] [stderr]   Downloaded shakmaty v0.26.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6aabb6523680809ab47f850cc0d22a810d5fa17dce19d11773cee204b737f3b7
[INFO] running `Command { std: "docker" "start" "-a" "6aabb6523680809ab47f850cc0d22a810d5fa17dce19d11773cee204b737f3b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aabb6523680809ab47f850cc0d22a810d5fa17dce19d11773cee204b737f3b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aabb6523680809ab47f850cc0d22a810d5fa17dce19d11773cee204b737f3b7", kill_on_drop: false }`
[INFO] [stdout] 6aabb6523680809ab47f850cc0d22a810d5fa17dce19d11773cee204b737f3b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e39d3c10e7f4c49b38800d6b886634e6453610084a2c3bf9d9f0a5a01d3dcb05
[INFO] running `Command { std: "docker" "start" "-a" "e39d3c10e7f4c49b38800d6b886634e6453610084a2c3bf9d9f0a5a01d3dcb05", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking circular v0.3.0
[INFO] [stderr]     Checking btoi v0.4.3
[INFO] [stderr]     Checking shakmaty v0.26.0
[INFO] [stderr]     Checking pgn-reader v0.25.0
[INFO] [stderr]     Checking sacrifice v0.3.0-alpha.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `new_node`
[INFO] [stdout]   --> src/bin/example.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let new_node = root.new_variation(queens_pawn); // 1. d4 node
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/example.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut game = sacrifice::read_pgn(
[INFO] [stdout]   |         ----^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_node`
[INFO] [stdout]   --> src/bin/example.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let new_node = root.new_variation(queens_pawn); // 1. d4 node
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/example.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut game = sacrifice::read_pgn(
[INFO] [stdout]   |         ----^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.45s
[INFO] running `Command { std: "docker" "inspect" "e39d3c10e7f4c49b38800d6b886634e6453610084a2c3bf9d9f0a5a01d3dcb05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e39d3c10e7f4c49b38800d6b886634e6453610084a2c3bf9d9f0a5a01d3dcb05", kill_on_drop: false }`
[INFO] [stdout] e39d3c10e7f4c49b38800d6b886634e6453610084a2c3bf9d9f0a5a01d3dcb05