Oct 21 22:10:28.639 INFO checking 02alexander/maze-solver against master#155510e377ae2a8d8ee0dad1a5f809c9062a5526 for pr-55192
Oct 21 22:10:28.639 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192/worker-0/master#155510e377ae2a8d8ee0dad1a5f809c9062a5526:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-0/pr-55192/master#155510e377ae2a8d8ee0dad1a5f809c9062a5526:/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 +155510e377ae2a8d8ee0dad1a5f809c9062a5526-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"`
Oct 21 22:10:28.949 INFO blam! 413229a4db2af7129c1c56750a699bd7e02577af715a67a60488073dff650b83
Oct 21 22:10:28.951 INFO running `"docker" "start" "-a" "413229a4db2af7129c1c56750a699bd7e02577af715a67a60488073dff650b83"`
Oct 21 22:10:29.440 INFO kablam! usermod: no changes
Oct 21 22:10:29.483 INFO kablam!     Checking flate2 v0.2.20
Oct 21 22:10:30.540 INFO kablam!     Checking imagefmt v4.0.0
Oct 21 22:10:32.252 INFO kablam!     Checking maze-solver v0.1.0 (/source)
Oct 21 22:10:32.837 INFO kablam! warning: unused imports: `read`, `write`
Oct 21 22:10:32.837 INFO kablam!  --> src/main.rs:3:16
Oct 21 22:10:32.837 INFO kablam!   |
Oct 21 22:10:32.837 INFO kablam! 3 | use imagefmt::{read, write, ColFmt, ColType};
Oct 21 22:10:32.837 INFO kablam!   |                ^^^^  ^^^^^
Oct 21 22:10:32.837 INFO kablam!   |
Oct 21 22:10:32.837 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 21 22:10:32.837 INFO kablam! 
Oct 21 22:10:32.837 INFO kablam! warning: unused import: `std::mem::drop`
Oct 21 22:10:32.837 INFO kablam!  --> src/tree.rs:2:5
Oct 21 22:10:32.837 INFO kablam!   |
Oct 21 22:10:32.837 INFO kablam! 2 | use std::mem::drop;
Oct 21 22:10:32.837 INFO kablam!   |     ^^^^^^^^^^^^^^
Oct 21 22:10:32.838 INFO kablam! 
Oct 21 22:10:32.838 INFO kablam! warning: unused import: `Node`
Oct 21 22:10:32.838 INFO kablam!  --> src/path_to_end.rs:3:35
Oct 21 22:10:32.838 INFO kablam!   |
Oct 21 22:10:32.838 INFO kablam! 3 | use super::tree::{QuaternaryTree, Node, Link};
Oct 21 22:10:32.838 INFO kablam!   |                                   ^^^^
Oct 21 22:10:32.838 INFO kablam! 
Oct 21 22:10:32.977 INFO kablam! warning: unused imports: `read`, `write`
Oct 21 22:10:32.977 INFO kablam!  --> src/main.rs:3:16
Oct 21 22:10:32.978 INFO kablam!   |
Oct 21 22:10:32.978 INFO kablam! 3 | use imagefmt::{read, write, ColFmt, ColType};
Oct 21 22:10:32.978 INFO kablam!   |                ^^^^  ^^^^^
Oct 21 22:10:32.979 INFO kablam!   |
Oct 21 22:10:32.979 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 21 22:10:32.979 INFO kablam! 
Oct 21 22:10:32.979 INFO kablam! warning: unused import: `std::mem::drop`
Oct 21 22:10:32.980 INFO kablam!  --> src/tree.rs:2:5
Oct 21 22:10:32.980 INFO kablam!   |
Oct 21 22:10:32.980 INFO kablam! 2 | use std::mem::drop;
Oct 21 22:10:32.981 INFO kablam!   |     ^^^^^^^^^^^^^^
Oct 21 22:10:32.981 INFO kablam! 
Oct 21 22:10:32.981 INFO kablam! warning: variable does not need to be mutable
Oct 21 22:10:32.981 INFO kablam!   --> src/tree.rs:41:8
Oct 21 22:10:32.982 INFO kablam!    |
Oct 21 22:10:32.982 INFO kablam! 41 |             let mut cur = &mut *next.take().unwrap();
Oct 21 22:10:32.982 INFO kablam!    |                 ----^^^
Oct 21 22:10:32.982 INFO kablam!    |                 |
Oct 21 22:10:32.983 INFO kablam!    |                 help: remove this `mut`
Oct 21 22:10:32.983 INFO kablam!    |
Oct 21 22:10:32.983 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 21 22:10:32.983 INFO kablam! 
Oct 21 22:10:33.011 INFO kablam! warning: unused `std::result::Result` that must be used
Oct 21 22:10:33.011 INFO kablam!   --> src/main.rs:20:2
Oct 21 22:10:33.011 INFO kablam!    |
Oct 21 22:10:33.011 INFO kablam! 20 |     imagefmt::write("out.bmp", maze.width, maze.height, ColFmt::RGB, &pixels, ColType::Auto);
Oct 21 22:10:33.011 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 21 22:10:33.011 INFO kablam!    |
Oct 21 22:10:33.011 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 21 22:10:33.011 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 21 22:10:33.011 INFO kablam! 
Oct 21 22:10:33.240 INFO kablam! warning: variable does not need to be mutable
Oct 21 22:10:33.240 INFO kablam!   --> src/tree.rs:41:8
Oct 21 22:10:33.240 INFO kablam!    |
Oct 21 22:10:33.240 INFO kablam! 41 |             let mut cur = &mut *next.take().unwrap();
Oct 21 22:10:33.240 INFO kablam!    |                 ----^^^
Oct 21 22:10:33.240 INFO kablam!    |                 |
Oct 21 22:10:33.240 INFO kablam!    |                 help: remove this `mut`
Oct 21 22:10:33.240 INFO kablam!    |
Oct 21 22:10:33.240 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 21 22:10:33.240 INFO kablam! 
Oct 21 22:10:33.304 INFO kablam! warning: unused `std::result::Result` that must be used
Oct 21 22:10:33.304 INFO kablam!   --> src/main.rs:20:2
Oct 21 22:10:33.304 INFO kablam!    |
Oct 21 22:10:33.304 INFO kablam! 20 |     imagefmt::write("out.bmp", maze.width, maze.height, ColFmt::RGB, &pixels, ColType::Auto);
Oct 21 22:10:33.304 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 21 22:10:33.304 INFO kablam!    |
Oct 21 22:10:33.304 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 21 22:10:33.304 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 21 22:10:33.304 INFO kablam! 
Oct 21 22:10:33.350 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.89s
Oct 21 22:10:33.363 INFO kablam! su: No module specific data is present
Oct 21 22:10:33.756 INFO running `"docker" "rm" "-f" "413229a4db2af7129c1c56750a699bd7e02577af715a67a60488073dff650b83"`
Oct 21 22:10:33.892 INFO blam! 413229a4db2af7129c1c56750a699bd7e02577af715a67a60488073dff650b83