Nov 28 14:55:34.574 INFO checking 02alexander/maze-solver against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074 Nov 28 14:55:34.574 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-0/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +db42d4dad33013eba11ef37342ad9f614e5652b8-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"` Nov 28 14:55:35.140 INFO [stdout] 56fe60d8b7be9d45cad1804aa1e9ca3faf6421ea55623b72c0e2ef141cdb2a4f Nov 28 14:55:35.146 INFO running `"docker" "start" "-a" "56fe60d8b7be9d45cad1804aa1e9ca3faf6421ea55623b72c0e2ef141cdb2a4f"` Nov 28 14:55:35.588 INFO [stderr] usermod: no changes Nov 28 14:55:35.630 INFO [stderr] Checking imagefmt v4.0.0 Nov 28 14:55:37.212 INFO [stderr] Checking maze-solver v0.1.0 (/source) Nov 28 14:55:37.796 INFO [stderr] warning: unused imports: `read`, `write` Nov 28 14:55:37.797 INFO [stderr] --> src/main.rs:3:16 Nov 28 14:55:37.797 INFO [stderr] | Nov 28 14:55:37.797 INFO [stderr] 3 | use imagefmt::{read, write, ColFmt, ColType}; Nov 28 14:55:37.798 INFO [stderr] | ^^^^ ^^^^^ Nov 28 14:55:37.798 INFO [stderr] | Nov 28 14:55:37.798 INFO [stderr] = note: #[warn(unused_imports)] on by default Nov 28 14:55:37.798 INFO [stderr] Nov 28 14:55:37.799 INFO [stderr] warning: unused import: `std::mem::drop` Nov 28 14:55:37.799 INFO [stderr] --> src/tree.rs:2:5 Nov 28 14:55:37.799 INFO [stderr] | Nov 28 14:55:37.800 INFO [stderr] 2 | use std::mem::drop; Nov 28 14:55:37.801 INFO [stderr] | ^^^^^^^^^^^^^^ Nov 28 14:55:37.801 INFO [stderr] Nov 28 14:55:37.801 INFO [stderr] warning: unused import: `Node` Nov 28 14:55:37.801 INFO [stderr] --> src/path_to_end.rs:3:35 Nov 28 14:55:37.802 INFO [stderr] | Nov 28 14:55:37.802 INFO [stderr] 3 | use super::tree::{QuaternaryTree, Node, Link}; Nov 28 14:55:37.802 INFO [stderr] | ^^^^ Nov 28 14:55:37.802 INFO [stderr] Nov 28 14:55:37.923 INFO [stderr] warning: unused imports: `read`, `write` Nov 28 14:55:37.923 INFO [stderr] --> src/main.rs:3:16 Nov 28 14:55:37.923 INFO [stderr] | Nov 28 14:55:37.923 INFO [stderr] 3 | use imagefmt::{read, write, ColFmt, ColType}; Nov 28 14:55:37.923 INFO [stderr] | ^^^^ ^^^^^ Nov 28 14:55:37.923 INFO [stderr] | Nov 28 14:55:37.923 INFO [stderr] = note: #[warn(unused_imports)] on by default Nov 28 14:55:37.923 INFO [stderr] Nov 28 14:55:37.924 INFO [stderr] warning: unused import: `std::mem::drop` Nov 28 14:55:37.924 INFO [stderr] --> src/tree.rs:2:5 Nov 28 14:55:37.925 INFO [stderr] | Nov 28 14:55:37.925 INFO [stderr] 2 | use std::mem::drop; Nov 28 14:55:37.925 INFO [stderr] | ^^^^^^^^^^^^^^ Nov 28 14:55:37.926 INFO [stderr] Nov 28 14:55:37.940 INFO [stderr] warning: variable does not need to be mutable Nov 28 14:55:37.940 INFO [stderr] --> src/tree.rs:41:8 Nov 28 14:55:37.940 INFO [stderr] | Nov 28 14:55:37.940 INFO [stderr] 41 | let mut cur = &mut *next.take().unwrap(); Nov 28 14:55:37.940 INFO [stderr] | ----^^^ Nov 28 14:55:37.940 INFO [stderr] | | Nov 28 14:55:37.940 INFO [stderr] | help: remove this `mut` Nov 28 14:55:37.940 INFO [stderr] | Nov 28 14:55:37.940 INFO [stderr] = note: #[warn(unused_mut)] on by default Nov 28 14:55:37.940 INFO [stderr] Nov 28 14:55:37.972 INFO [stderr] warning: unused `std::result::Result` that must be used Nov 28 14:55:37.972 INFO [stderr] --> src/main.rs:20:2 Nov 28 14:55:37.972 INFO [stderr] | Nov 28 14:55:37.972 INFO [stderr] 20 | imagefmt::write("out.bmp", maze.width, maze.height, ColFmt::RGB, &pixels, ColType::Auto); Nov 28 14:55:37.972 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 14:55:37.972 INFO [stderr] | Nov 28 14:55:37.972 INFO [stderr] = note: #[warn(unused_must_use)] on by default Nov 28 14:55:37.973 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Nov 28 14:55:37.973 INFO [stderr] Nov 28 14:55:38.186 INFO [stderr] warning: variable does not need to be mutable Nov 28 14:55:38.186 INFO [stderr] --> src/tree.rs:41:8 Nov 28 14:55:38.186 INFO [stderr] | Nov 28 14:55:38.186 INFO [stderr] 41 | let mut cur = &mut *next.take().unwrap(); Nov 28 14:55:38.186 INFO [stderr] | ----^^^ Nov 28 14:55:38.186 INFO [stderr] | | Nov 28 14:55:38.186 INFO [stderr] | help: remove this `mut` Nov 28 14:55:38.186 INFO [stderr] | Nov 28 14:55:38.186 INFO [stderr] = note: #[warn(unused_mut)] on by default Nov 28 14:55:38.187 INFO [stderr] Nov 28 14:55:38.257 INFO [stderr] warning: unused `std::result::Result` that must be used Nov 28 14:55:38.257 INFO [stderr] --> src/main.rs:20:2 Nov 28 14:55:38.257 INFO [stderr] | Nov 28 14:55:38.257 INFO [stderr] 20 | imagefmt::write("out.bmp", maze.width, maze.height, ColFmt::RGB, &pixels, ColType::Auto); Nov 28 14:55:38.257 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 14:55:38.257 INFO [stderr] | Nov 28 14:55:38.257 INFO [stderr] = note: #[warn(unused_must_use)] on by default Nov 28 14:55:38.257 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Nov 28 14:55:38.257 INFO [stderr] Nov 28 14:55:38.285 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.67s Nov 28 14:55:38.288 INFO [stderr] su: No module specific data is present Nov 28 14:55:38.646 INFO running `"docker" "inspect" "56fe60d8b7be9d45cad1804aa1e9ca3faf6421ea55623b72c0e2ef141cdb2a4f"` Nov 28 14:55:38.770 INFO running `"docker" "rm" "-f" "56fe60d8b7be9d45cad1804aa1e9ca3faf6421ea55623b72c0e2ef141cdb2a4f"` Nov 28 14:55:38.881 INFO [stdout] 56fe60d8b7be9d45cad1804aa1e9ca3faf6421ea55623b72c0e2ef141cdb2a4f