[INFO] updating cached repository https://github.com/lreynolds18/maze-solver
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5f8025d73c2046ad6dabd37e51c1e8c2d8f72b73
[INFO] checking lreynolds18/maze-solver against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Flreynolds18%2Fmaze-solver" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lreynolds18/maze-solver on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/lreynolds18/maze-solver
[INFO] finished tweaking git repo https://github.com/lreynolds18/maze-solver
[INFO] tweaked toml for git repo https://github.com/lreynolds18/maze-solver written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/lreynolds18/maze-solver already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1822637593d5362dd2fc36d5a371d352422f262260152d2fbffe800c113110f3
[INFO] running `"docker" "start" "-a" "1822637593d5362dd2fc36d5a371d352422f262260152d2fbffe800c113110f3"`
[INFO] [stderr]    Compiling bitflags v1.0.0
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking rayon-core v1.2.1
[INFO] [stderr]     Checking png v0.10.0
[INFO] [stderr]     Checking piston2d-graphics v0.22.0
[INFO] [stderr]     Checking pistoncore-input v0.19.0
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]    Compiling gl_generator v0.6.1
[INFO] [stderr]     Checking pistoncore-window v0.29.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]    Compiling gl v0.6.5
[INFO] [stderr]     Checking pistoncore-event_loop v0.34.0
[INFO] [stderr]     Checking image v0.16.0
[INFO] [stderr]     Checking piston v0.34.0
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.47.0
[INFO] [stderr]     Checking dlib v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.9.10
[INFO] [stderr]     Checking wayland-client v0.9.10
[INFO] [stderr]     Checking wayland-protocols v0.9.10
[INFO] [stderr]     Checking wayland-kbd v0.9.1
[INFO] [stderr]     Checking wayland-window v0.7.0
[INFO] [stderr]     Checking winit v0.7.6
[INFO] [stderr]     Checking glutin v0.9.2
[INFO] [stderr]     Checking pistoncore-glutin_window v0.40.1
[INFO] [stderr]     Checking maze_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `MazeSolver`
[INFO] [stderr]   --> src/main.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | struct MazeSolver {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dfs`
[INFO] [stderr]   --> src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn dfs() {}
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bfs`
[INFO] [stderr]   --> src/main.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn bfs() {}
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `a_star`
[INFO] [stderr]   --> src/main.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn a_star() {}
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: missing documentation for crate
[INFO] [stderr]    --> src/main.rs:1:1
[INFO] [stderr]     |
[INFO] [stderr] 1   | / #![deny(missing_docs)]
[INFO] [stderr] 2   | |
[INFO] [stderr] 3   | | extern crate piston;
[INFO] [stderr] 4   | | extern crate graphics;
[INFO] [stderr] ...   |
[INFO] [stderr] 155 | |     screen.run();
[INFO] [stderr] 156 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/main.rs:1:9
[INFO] [stderr]     |
[INFO] [stderr] 1   | #![deny(missing_docs)]
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `maze_solver`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: struct is never constructed: `MazeSolver`
[INFO] [stderr]   --> src/main.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | struct MazeSolver {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dfs`
[INFO] [stderr]   --> src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn dfs() {}
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bfs`
[INFO] [stderr]   --> src/main.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn bfs() {}
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `a_star`
[INFO] [stderr]   --> src/main.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn a_star() {}
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "1822637593d5362dd2fc36d5a371d352422f262260152d2fbffe800c113110f3"`
[INFO] running `"docker" "rm" "-f" "1822637593d5362dd2fc36d5a371d352422f262260152d2fbffe800c113110f3"`
[INFO] [stdout] 1822637593d5362dd2fc36d5a371d352422f262260152d2fbffe800c113110f3