Dec 18 08:50:34.862 INFO checking 02alexander/maze-solver against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 08:50:34.862 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/02alexander/maze-solver:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 08:50:35.254 INFO [stdout] 4df484ea2eb26a17ad03b1b3d17af7080ebae8bd505b2c46e4202778832911aa
Dec 18 08:50:35.256 INFO running `"docker" "start" "-a" "4df484ea2eb26a17ad03b1b3d17af7080ebae8bd505b2c46e4202778832911aa"`
Dec 18 08:50:37.072 INFO [stderr]     Checking imagefmt v4.0.0
Dec 18 08:50:38.817 INFO [stderr]     Checking maze-solver v0.1.0 (/opt/crater/workdir)
Dec 18 08:50:39.232 INFO [stderr] warning: unused imports: `read`, `write`
Dec 18 08:50:39.232 INFO [stderr]  --> src/main.rs:3:16
Dec 18 08:50:39.232 INFO [stderr]   |
Dec 18 08:50:39.232 INFO [stderr] 3 | use imagefmt::{read, write, ColFmt, ColType};
Dec 18 08:50:39.232 INFO [stderr]   |                ^^^^  ^^^^^
Dec 18 08:50:39.232 INFO [stderr]   |
Dec 18 08:50:39.232 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 08:50:39.232 INFO [stderr] 
Dec 18 08:50:39.232 INFO [stderr] warning: unused import: `std::mem::drop`
Dec 18 08:50:39.232 INFO [stderr]  --> src/tree.rs:2:5
Dec 18 08:50:39.232 INFO [stderr]   |
Dec 18 08:50:39.232 INFO [stderr] 2 | use std::mem::drop;
Dec 18 08:50:39.232 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 18 08:50:39.232 INFO [stderr] 
Dec 18 08:50:39.232 INFO [stderr] warning: unused import: `Node`
Dec 18 08:50:39.232 INFO [stderr]  --> src/path_to_end.rs:3:35
Dec 18 08:50:39.232 INFO [stderr]   |
Dec 18 08:50:39.232 INFO [stderr] 3 | use super::tree::{QuaternaryTree, Node, Link};
Dec 18 08:50:39.232 INFO [stderr]   |                                   ^^^^
Dec 18 08:50:39.232 INFO [stderr] 
Dec 18 08:50:39.272 INFO [stderr] warning: unused imports: `read`, `write`
Dec 18 08:50:39.272 INFO [stderr]  --> src/main.rs:3:16
Dec 18 08:50:39.272 INFO [stderr]   |
Dec 18 08:50:39.272 INFO [stderr] 3 | use imagefmt::{read, write, ColFmt, ColType};
Dec 18 08:50:39.272 INFO [stderr]   |                ^^^^  ^^^^^
Dec 18 08:50:39.272 INFO [stderr]   |
Dec 18 08:50:39.272 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 08:50:39.272 INFO [stderr] 
Dec 18 08:50:39.272 INFO [stderr] warning: unused import: `std::mem::drop`
Dec 18 08:50:39.272 INFO [stderr]  --> src/tree.rs:2:5
Dec 18 08:50:39.272 INFO [stderr]   |
Dec 18 08:50:39.272 INFO [stderr] 2 | use std::mem::drop;
Dec 18 08:50:39.272 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 18 08:50:39.272 INFO [stderr] 
Dec 18 08:50:39.504 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:50:39.504 INFO [stderr]   --> src/tree.rs:41:8
Dec 18 08:50:39.504 INFO [stderr]    |
Dec 18 08:50:39.504 INFO [stderr] 41 |             let mut cur = &mut *next.take().unwrap();
Dec 18 08:50:39.504 INFO [stderr]    |                 ----^^^
Dec 18 08:50:39.504 INFO [stderr]    |                 |
Dec 18 08:50:39.504 INFO [stderr]    |                 help: remove this `mut`
Dec 18 08:50:39.504 INFO [stderr]    |
Dec 18 08:50:39.504 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 08:50:39.504 INFO [stderr] 
Dec 18 08:50:39.552 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 08:50:39.552 INFO [stderr]   --> src/main.rs:20:2
Dec 18 08:50:39.552 INFO [stderr]    |
Dec 18 08:50:39.552 INFO [stderr] 20 |     imagefmt::write("out.bmp", maze.width, maze.height, ColFmt::RGB, &pixels, ColType::Auto);
Dec 18 08:50:39.552 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:50:39.552 INFO [stderr]    |
Dec 18 08:50:39.552 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 08:50:39.552 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 08:50:39.552 INFO [stderr] 
Dec 18 08:50:39.604 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:50:39.604 INFO [stderr]   --> src/tree.rs:41:8
Dec 18 08:50:39.604 INFO [stderr]    |
Dec 18 08:50:39.604 INFO [stderr] 41 |             let mut cur = &mut *next.take().unwrap();
Dec 18 08:50:39.604 INFO [stderr]    |                 ----^^^
Dec 18 08:50:39.604 INFO [stderr]    |                 |
Dec 18 08:50:39.604 INFO [stderr]    |                 help: remove this `mut`
Dec 18 08:50:39.604 INFO [stderr]    |
Dec 18 08:50:39.604 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 08:50:39.604 INFO [stderr] 
Dec 18 08:50:39.732 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 08:50:39.732 INFO [stderr]   --> src/main.rs:20:2
Dec 18 08:50:39.732 INFO [stderr]    |
Dec 18 08:50:39.732 INFO [stderr] 20 |     imagefmt::write("out.bmp", maze.width, maze.height, ColFmt::RGB, &pixels, ColType::Auto);
Dec 18 08:50:39.732 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:50:39.732 INFO [stderr]    |
Dec 18 08:50:39.732 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 08:50:39.732 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 08:50:39.732 INFO [stderr] 
Dec 18 08:50:39.775 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.78s
Dec 18 08:50:40.824 INFO running `"docker" "inspect" "4df484ea2eb26a17ad03b1b3d17af7080ebae8bd505b2c46e4202778832911aa"`
Dec 18 08:50:41.142 INFO running `"docker" "rm" "-f" "4df484ea2eb26a17ad03b1b3d17af7080ebae8bd505b2c46e4202778832911aa"`
Dec 18 08:50:41.531 INFO [stdout] 4df484ea2eb26a17ad03b1b3d17af7080ebae8bd505b2c46e4202778832911aa