Nov 04 14:56:40.546 INFO checking 02alexander/maze-solver against master#2ad8c7b3502616aff142a4640cce911c6c2c5463 for pr-55655
Nov 04 14:56:40.546 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-7/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55655/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/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 +2ad8c7b3502616aff142a4640cce911c6c2c5463-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 04 14:56:40.895 INFO blam! e80e4b8facc1b96b54f5bc122e20f3db724cf516c9a2bd4193e5f0d56f27b371
Nov 04 14:56:40.901 INFO running `"docker" "start" "-a" "e80e4b8facc1b96b54f5bc122e20f3db724cf516c9a2bd4193e5f0d56f27b371"`
Nov 04 14:56:41.306 INFO kablam! usermod: no changes
Nov 04 14:56:41.342 INFO kablam!     Checking flate2 v0.2.20
Nov 04 14:56:42.451 INFO kablam!     Checking imagefmt v4.0.0
Nov 04 14:56:44.102 INFO kablam!     Checking maze-solver v0.1.0 (/source)
Nov 04 14:56:44.611 INFO kablam! warning: unused imports: `read`, `write`
Nov 04 14:56:44.612 INFO kablam!  --> src/main.rs:3:16
Nov 04 14:56:44.612 INFO kablam!   |
Nov 04 14:56:44.612 INFO kablam! 3 | use imagefmt::{read, write, ColFmt, ColType};
Nov 04 14:56:44.613 INFO kablam!   |                ^^^^  ^^^^^
Nov 04 14:56:44.613 INFO kablam!   |
Nov 04 14:56:44.613 INFO kablam!   = note: #[warn(unused_imports)] on by default
Nov 04 14:56:44.614 INFO kablam! 
Nov 04 14:56:44.614 INFO kablam! warning: unused import: `std::mem::drop`
Nov 04 14:56:44.614 INFO kablam!  --> src/tree.rs:2:5
Nov 04 14:56:44.615 INFO kablam!   |
Nov 04 14:56:44.615 INFO kablam! 2 | use std::mem::drop;
Nov 04 14:56:44.615 INFO kablam!   |     ^^^^^^^^^^^^^^
Nov 04 14:56:44.615 INFO kablam! 
Nov 04 14:56:44.615 INFO kablam! warning: unused import: `Node`
Nov 04 14:56:44.615 INFO kablam!  --> src/path_to_end.rs:3:35
Nov 04 14:56:44.615 INFO kablam!   |
Nov 04 14:56:44.615 INFO kablam! 3 | use super::tree::{QuaternaryTree, Node, Link};
Nov 04 14:56:44.615 INFO kablam!   |                                   ^^^^
Nov 04 14:56:44.615 INFO kablam! 
Nov 04 14:56:44.712 INFO kablam! warning: unused imports: `read`, `write`
Nov 04 14:56:44.712 INFO kablam!  --> src/main.rs:3:16
Nov 04 14:56:44.712 INFO kablam!   |
Nov 04 14:56:44.712 INFO kablam! 3 | use imagefmt::{read, write, ColFmt, ColType};
Nov 04 14:56:44.712 INFO kablam!   |                ^^^^  ^^^^^
Nov 04 14:56:44.712 INFO kablam!   |
Nov 04 14:56:44.712 INFO kablam!   = note: #[warn(unused_imports)] on by default
Nov 04 14:56:44.712 INFO kablam! 
Nov 04 14:56:44.713 INFO kablam! warning: unused import: `std::mem::drop`
Nov 04 14:56:44.713 INFO kablam!  --> src/tree.rs:2:5
Nov 04 14:56:44.713 INFO kablam!   |
Nov 04 14:56:44.713 INFO kablam! 2 | use std::mem::drop;
Nov 04 14:56:44.713 INFO kablam!   |     ^^^^^^^^^^^^^^
Nov 04 14:56:44.713 INFO kablam! 
Nov 04 14:56:44.746 INFO kablam! warning: variable does not need to be mutable
Nov 04 14:56:44.746 INFO kablam!   --> src/tree.rs:41:8
Nov 04 14:56:44.746 INFO kablam!    |
Nov 04 14:56:44.746 INFO kablam! 41 |             let mut cur = &mut *next.take().unwrap();
Nov 04 14:56:44.746 INFO kablam!    |                 ----^^^
Nov 04 14:56:44.746 INFO kablam!    |                 |
Nov 04 14:56:44.746 INFO kablam!    |                 help: remove this `mut`
Nov 04 14:56:44.746 INFO kablam!    |
Nov 04 14:56:44.746 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 04 14:56:44.746 INFO kablam! 
Nov 04 14:56:44.784 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 04 14:56:44.785 INFO kablam!   --> src/main.rs:20:2
Nov 04 14:56:44.785 INFO kablam!    |
Nov 04 14:56:44.786 INFO kablam! 20 |     imagefmt::write("out.bmp", maze.width, maze.height, ColFmt::RGB, &pixels, ColType::Auto);
Nov 04 14:56:44.786 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 04 14:56:44.786 INFO kablam!    |
Nov 04 14:56:44.786 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 04 14:56:44.786 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 04 14:56:44.786 INFO kablam! 
Nov 04 14:56:44.898 INFO kablam! warning: variable does not need to be mutable
Nov 04 14:56:44.898 INFO kablam!   --> src/tree.rs:41:8
Nov 04 14:56:44.898 INFO kablam!    |
Nov 04 14:56:44.898 INFO kablam! 41 |             let mut cur = &mut *next.take().unwrap();
Nov 04 14:56:44.898 INFO kablam!    |                 ----^^^
Nov 04 14:56:44.898 INFO kablam!    |                 |
Nov 04 14:56:44.898 INFO kablam!    |                 help: remove this `mut`
Nov 04 14:56:44.898 INFO kablam!    |
Nov 04 14:56:44.898 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 04 14:56:44.898 INFO kablam! 
Nov 04 14:56:44.947 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 04 14:56:44.947 INFO kablam!   --> src/main.rs:20:2
Nov 04 14:56:44.947 INFO kablam!    |
Nov 04 14:56:44.947 INFO kablam! 20 |     imagefmt::write("out.bmp", maze.width, maze.height, ColFmt::RGB, &pixels, ColType::Auto);
Nov 04 14:56:44.947 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 04 14:56:44.947 INFO kablam!    |
Nov 04 14:56:44.947 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 04 14:56:44.947 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 04 14:56:44.947 INFO kablam! 
Nov 04 14:56:44.965 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.64s
Nov 04 14:56:44.968 INFO kablam! su: No module specific data is present
Nov 04 14:56:45.337 INFO running `"docker" "rm" "-f" "e80e4b8facc1b96b54f5bc122e20f3db724cf516c9a2bd4193e5f0d56f27b371"`
Nov 04 14:56:45.439 INFO blam! e80e4b8facc1b96b54f5bc122e20f3db724cf516c9a2bd4193e5f0d56f27b371