Nov 01 13:22:57.153 INFO checking 02alexander/maze-solver against master#05812fa8c588473f03e3fa7cf59cd84f4f37c715 for pr-55538
Nov 01 13:22:57.153 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-4/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55538/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/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 +05812fa8c588473f03e3fa7cf59cd84f4f37c715-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 01 13:22:57.371 INFO blam! 108aa319b47b6591bd2d8731af3080bcc95e6479f989cca0a85958b370778943
Nov 01 13:22:57.373 INFO running `"docker" "start" "-a" "108aa319b47b6591bd2d8731af3080bcc95e6479f989cca0a85958b370778943"`
Nov 01 13:22:57.783 INFO kablam! usermod: no changes
Nov 01 13:22:57.829 INFO kablam!     Checking flate2 v0.2.20
Nov 01 13:22:59.047 INFO kablam!     Checking imagefmt v4.0.0
Nov 01 13:23:00.841 INFO kablam!     Checking maze-solver v0.1.0 (/source)
Nov 01 13:23:01.487 INFO kablam! warning: unused imports: `read`, `write`
Nov 01 13:23:01.488 INFO kablam!  --> src/main.rs:3:16
Nov 01 13:23:01.488 INFO kablam!   |
Nov 01 13:23:01.488 INFO kablam! 3 | use imagefmt::{read, write, ColFmt, ColType};
Nov 01 13:23:01.489 INFO kablam!   |                ^^^^  ^^^^^
Nov 01 13:23:01.489 INFO kablam!   |
Nov 01 13:23:01.489 INFO kablam!   = note: #[warn(unused_imports)] on by default
Nov 01 13:23:01.489 INFO kablam! 
Nov 01 13:23:01.489 INFO kablam! warning: unused import: `std::mem::drop`
Nov 01 13:23:01.490 INFO kablam!  --> src/tree.rs:2:5
Nov 01 13:23:01.490 INFO kablam!   |
Nov 01 13:23:01.490 INFO kablam! 2 | use std::mem::drop;
Nov 01 13:23:01.490 INFO kablam!   |     ^^^^^^^^^^^^^^
Nov 01 13:23:01.490 INFO kablam! 
Nov 01 13:23:01.491 INFO kablam! warning: unused import: `Node`
Nov 01 13:23:01.491 INFO kablam!  --> src/path_to_end.rs:3:35
Nov 01 13:23:01.491 INFO kablam!   |
Nov 01 13:23:01.491 INFO kablam! 3 | use super::tree::{QuaternaryTree, Node, Link};
Nov 01 13:23:01.491 INFO kablam!   |                                   ^^^^
Nov 01 13:23:01.491 INFO kablam! 
Nov 01 13:23:01.648 INFO kablam! warning: variable does not need to be mutable
Nov 01 13:23:01.648 INFO kablam!   --> src/tree.rs:41:8
Nov 01 13:23:01.648 INFO kablam!    |
Nov 01 13:23:01.648 INFO kablam! 41 |             let mut cur = &mut *next.take().unwrap();
Nov 01 13:23:01.648 INFO kablam!    |                 ----^^^
Nov 01 13:23:01.648 INFO kablam!    |                 |
Nov 01 13:23:01.648 INFO kablam!    |                 help: remove this `mut`
Nov 01 13:23:01.648 INFO kablam!    |
Nov 01 13:23:01.648 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 13:23:01.648 INFO kablam! 
Nov 01 13:23:01.668 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 01 13:23:01.668 INFO kablam!   --> src/main.rs:20:2
Nov 01 13:23:01.668 INFO kablam!    |
Nov 01 13:23:01.668 INFO kablam! 20 |     imagefmt::write("out.bmp", maze.width, maze.height, ColFmt::RGB, &pixels, ColType::Auto);
Nov 01 13:23:01.668 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:23:01.668 INFO kablam!    |
Nov 01 13:23:01.668 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 01 13:23:01.668 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:23:01.668 INFO kablam! 
Nov 01 13:23:01.692 INFO kablam! warning: unused imports: `read`, `write`
Nov 01 13:23:01.692 INFO kablam!  --> src/main.rs:3:16
Nov 01 13:23:01.692 INFO kablam!   |
Nov 01 13:23:01.692 INFO kablam! 3 | use imagefmt::{read, write, ColFmt, ColType};
Nov 01 13:23:01.692 INFO kablam!   |                ^^^^  ^^^^^
Nov 01 13:23:01.692 INFO kablam!   |
Nov 01 13:23:01.692 INFO kablam!   = note: #[warn(unused_imports)] on by default
Nov 01 13:23:01.692 INFO kablam! 
Nov 01 13:23:01.692 INFO kablam! warning: unused import: `std::mem::drop`
Nov 01 13:23:01.692 INFO kablam!  --> src/tree.rs:2:5
Nov 01 13:23:01.692 INFO kablam!   |
Nov 01 13:23:01.692 INFO kablam! 2 | use std::mem::drop;
Nov 01 13:23:01.692 INFO kablam!   |     ^^^^^^^^^^^^^^
Nov 01 13:23:01.692 INFO kablam! 
Nov 01 13:23:01.928 INFO kablam! warning: variable does not need to be mutable
Nov 01 13:23:01.928 INFO kablam!   --> src/tree.rs:41:8
Nov 01 13:23:01.928 INFO kablam!    |
Nov 01 13:23:01.928 INFO kablam! 41 |             let mut cur = &mut *next.take().unwrap();
Nov 01 13:23:01.928 INFO kablam!    |                 ----^^^
Nov 01 13:23:01.928 INFO kablam!    |                 |
Nov 01 13:23:01.928 INFO kablam!    |                 help: remove this `mut`
Nov 01 13:23:01.928 INFO kablam!    |
Nov 01 13:23:01.928 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 13:23:01.928 INFO kablam! 
Nov 01 13:23:02.000 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 01 13:23:02.001 INFO kablam!   --> src/main.rs:20:2
Nov 01 13:23:02.001 INFO kablam!    |
Nov 01 13:23:02.001 INFO kablam! 20 |     imagefmt::write("out.bmp", maze.width, maze.height, ColFmt::RGB, &pixels, ColType::Auto);
Nov 01 13:23:02.001 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 13:23:02.001 INFO kablam!    |
Nov 01 13:23:02.001 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 01 13:23:02.002 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 13:23:02.002 INFO kablam! 
Nov 01 13:23:02.024 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.22s
Nov 01 13:23:02.024 INFO kablam! su: No module specific data is present
Nov 01 13:23:02.300 INFO running `"docker" "rm" "-f" "108aa319b47b6591bd2d8731af3080bcc95e6479f989cca0a85958b370778943"`
Nov 01 13:23:02.398 INFO blam! 108aa319b47b6591bd2d8731af3080bcc95e6479f989cca0a85958b370778943