[INFO] cloning repository https://github.com/McGittyHub/cubes-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/McGittyHub/cubes-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMcGittyHub%2Fcubes-rs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMcGittyHub%2Fcubes-rs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4b078a42c3e27afd3107a171f8b7614319817036
[INFO] checking McGittyHub/cubes-rs against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMcGittyHub%2Fcubes-rs" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/McGittyHub/cubes-rs on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/McGittyHub/cubes-rs
[INFO] finished tweaking git repo https://github.com/McGittyHub/cubes-rs
[INFO] tweaked toml for git repo https://github.com/McGittyHub/cubes-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/McGittyHub/cubes-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 986683a1be5a4825f421d5b9d1204b193e9232b7b5189be86f7fdf2f8e967693
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "986683a1be5a4825f421d5b9d1204b193e9232b7b5189be86f7fdf2f8e967693"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rand v0.3.20
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking shared_library v0.1.8
[INFO] [stderr]    Compiling x11-dl v2.17.2
[INFO] [stderr]    Compiling gl_generator v0.7.0
[INFO] [stderr]     Checking gfx_core v0.8.0
[INFO] [stderr]     Checking ordered-float v0.5.0
[INFO] [stderr]     Checking cgmath v0.16.0
[INFO] [stderr]     Checking backtrace-sys v0.1.16
[INFO] [stderr]     Checking wayland-client v0.12.5
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking backtrace v0.3.5
[INFO] [stderr]     Checking rusttype v0.3.0
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking num-bigint v0.1.41
[INFO] [stderr]     Checking noise v0.4.1
[INFO] [stderr]     Checking wayland-protocols v0.12.5
[INFO] [stderr]     Checking wayland-kbd v0.13.1
[INFO] [stderr]    Compiling gfx_gl v0.4.0
[INFO] [stderr]    Compiling glutin v0.12.0
[INFO] [stderr]     Checking num-rational v0.1.40
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking collision v0.14.0
[INFO] [stderr]     Checking wayland-window v0.13.2
[INFO] [stderr]     Checking winit v0.10.0
[INFO] [stderr]     Checking gfx_device_gl v0.15.0
[INFO] [stderr]     Checking gfx v0.17.1
[INFO] [stderr]     Checking gfx_window_glutin v0.20.0
[INFO] [stderr]     Checking gfx_glyph v0.8.0
[INFO] [stderr]     Checking cubes-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `cube_count`
[INFO] [stderr]    --> src/main.rs:368:13
[INFO] [stderr]     |
[INFO] [stderr] 368 |     let mut cube_count = 0;
[INFO] [stderr]     |             ^^^^^^^^^^ help: consider prefixing with an underscore: `_cube_count`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:368:9
[INFO] [stderr]     |
[INFO] [stderr] 368 |     let mut cube_count = 0;
[INFO] [stderr]     |         ----^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cube_count`
[INFO] [stderr]    --> src/main.rs:368:13
[INFO] [stderr]     |
[INFO] [stderr] 368 |     let mut cube_count = 0;
[INFO] [stderr]     |             ^^^^^^^^^^ help: consider prefixing with an underscore: `_cube_count`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:368:9
[INFO] [stderr]     |
[INFO] [stderr] 368 |     let mut cube_count = 0;
[INFO] [stderr]     |         ----^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(conservative_impl_trait)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `entry_and_modify` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(entry_and_modify)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(conservative_impl_trait)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `entry_and_modify` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(entry_and_modify)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 25s
[INFO] running `"docker" "inspect" "986683a1be5a4825f421d5b9d1204b193e9232b7b5189be86f7fdf2f8e967693"`
[INFO] running `"docker" "rm" "-f" "986683a1be5a4825f421d5b9d1204b193e9232b7b5189be86f7fdf2f8e967693"`
[INFO] [stdout] 986683a1be5a4825f421d5b9d1204b193e9232b7b5189be86f7fdf2f8e967693