[INFO] fetching crate maze_rs 1.0.0...
[INFO] checking maze_rs-1.0.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate maze_rs 1.0.0 into /workspace/builds/worker-48/source
[INFO] validating manifest of crates.io crate maze_rs 1.0.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maze_rs 1.0.0
[INFO] finished tweaking crates.io crate maze_rs 1.0.0
[INFO] tweaked toml for crates.io crate maze_rs 1.0.0 written to /workspace/builds/worker-48/source/Cargo.toml
[INFO] crate crates.io crate maze_rs 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4fc2c83d31bbdbb3a6835e8a3e1a8cae3c29569060ff095f9aa7808aa2d608c
[INFO] running `Command { std: "docker" "start" "-a" "e4fc2c83d31bbdbb3a6835e8a3e1a8cae3c29569060ff095f9aa7808aa2d608c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4fc2c83d31bbdbb3a6835e8a3e1a8cae3c29569060ff095f9aa7808aa2d608c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4fc2c83d31bbdbb3a6835e8a3e1a8cae3c29569060ff095f9aa7808aa2d608c", kill_on_drop: false }`
[INFO] [stdout] e4fc2c83d31bbdbb3a6835e8a3e1a8cae3c29569060ff095f9aa7808aa2d608c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 619be7aee7b7ef0fcb067b6f7203b453af1f74a037cb126dc998640f2a740a3d
[INFO] running `Command { std: "docker" "start" "-a" "619be7aee7b7ef0fcb067b6f7203b453af1f74a037cb126dc998640f2a740a3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking maze_rs v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `ds`
[INFO] [stdout]   --> src/helper/mod.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     use ds::Point;
[INFO] [stdout]    |         ^^ help: a similar path exists: `crate::ds`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `use` statements changed in Rust 2018; read more at <https://doc.rust-lang.org/edition-guide/rust-2018/module-system/path-clarity.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `kind`
[INFO] [stdout]   --> src/error/mod.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     kind: ErrorKind,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `v`
[INFO] [stdout]    --> src/ds/graphs.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 164 |     v: usize,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `maze_rs` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "619be7aee7b7ef0fcb067b6f7203b453af1f74a037cb126dc998640f2a740a3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "619be7aee7b7ef0fcb067b6f7203b453af1f74a037cb126dc998640f2a740a3d", kill_on_drop: false }`
[INFO] [stdout] 619be7aee7b7ef0fcb067b6f7203b453af1f74a037cb126dc998640f2a740a3d