[INFO] cloning repository https://github.com/asuyou/selfmine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/asuyou/selfmine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasuyou%2Fselfmine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasuyou%2Fselfmine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 46a9dcbf6a9c4d2d52c27caa0a0676a6fe09d7ff
[INFO] checking asuyou/selfmine against master#19dd9535408db0f1ff3d16613619076aef524d19 for pr-115950
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasuyou%2Fselfmine" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asuyou/selfmine on toolchain 19dd9535408db0f1ff3d16613619076aef524d19
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+19dd9535408db0f1ff3d16613619076aef524d19" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/asuyou/selfmine
[INFO] finished tweaking git repo https://github.com/asuyou/selfmine
[INFO] tweaked toml for git repo https://github.com/asuyou/selfmine written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/asuyou/selfmine 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" "+19dd9535408db0f1ff3d16613619076aef524d19" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+19dd9535408db0f1ff3d16613619076aef524d19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04b0c1d14ba29cde10bfa111aa425bc137b425fcbdef7b98c90343580a5eb8ba
[INFO] running `Command { std: "docker" "start" "-a" "04b0c1d14ba29cde10bfa111aa425bc137b425fcbdef7b98c90343580a5eb8ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04b0c1d14ba29cde10bfa111aa425bc137b425fcbdef7b98c90343580a5eb8ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04b0c1d14ba29cde10bfa111aa425bc137b425fcbdef7b98c90343580a5eb8ba", kill_on_drop: false }`
[INFO] [stdout] 04b0c1d14ba29cde10bfa111aa425bc137b425fcbdef7b98c90343580a5eb8ba
[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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+19dd9535408db0f1ff3d16613619076aef524d19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba4b0c0c69fd1140638d2f20002fc41407ca54b35dc3b87599ad643793ff21a3
[INFO] running `Command { std: "docker" "start" "-a" "ba4b0c0c69fd1140638d2f20002fc41407ca54b35dc3b87599ad643793ff21a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking selfmine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `iter_neighbors_open` is never used
[INFO] [stdout]    --> src/game.rs:112:10
[INFO] [stdout]     |
[INFO] [stdout] 23  | impl Board {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 112 |   pub fn iter_neighbors_open(&mut self, pos: Position) -> impl Iterator<Item = Position> + '_ {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter_neighbors_open` is never used
[INFO] [stdout]    --> src/game.rs:112:10
[INFO] [stdout]     |
[INFO] [stdout] 23  | impl Board {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 112 |   pub fn iter_neighbors_open(&mut self, pos: Position) -> impl Iterator<Item = Position> + '_ {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "ba4b0c0c69fd1140638d2f20002fc41407ca54b35dc3b87599ad643793ff21a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba4b0c0c69fd1140638d2f20002fc41407ca54b35dc3b87599ad643793ff21a3", kill_on_drop: false }`
[INFO] [stdout] ba4b0c0c69fd1140638d2f20002fc41407ca54b35dc3b87599ad643793ff21a3