Dec 19 22:07:40.069 INFO checking RobertWHurst/Delta against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 22:07:40.069 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/RobertWHurst/Delta:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 22:07:40.670 INFO [stdout] 341431f4455997a1d0157b815ef864ad9266bf2a033e5c4af0a821995231c3bb
Dec 19 22:07:40.672 INFO running `"docker" "start" "-a" "341431f4455997a1d0157b815ef864ad9266bf2a033e5c4af0a821995231c3bb"`
Dec 19 22:07:42.667 INFO [stderr]    Compiling libc v0.2.28
Dec 19 22:07:42.677 INFO [stderr]    Compiling serde_json v0.9.10
Dec 19 22:07:42.678 INFO [stderr]     Checking num_cpus v1.6.2
Dec 19 22:07:42.678 INFO [stderr]     Checking shared_library v0.1.7
Dec 19 22:07:42.678 INFO [stderr]     Checking deflate v0.7.14
Dec 19 22:07:42.678 INFO [stderr]     Checking tempfile v2.1.6
Dec 19 22:07:42.679 INFO [stderr]     Checking x11-dl v2.14.0
Dec 19 22:07:42.679 INFO [stderr]     Checking fs2 v0.2.5
Dec 19 22:07:43.776 INFO [stderr]     Checking memmap v0.4.0
Dec 19 22:07:44.056 INFO [stderr]     Checking rayon-core v1.2.1
Dec 19 22:07:44.312 INFO [stderr]     Checking osmesa-sys v0.1.2
Dec 19 22:07:45.452 INFO [stderr]     Checking png v0.8.0
Dec 19 22:07:45.962 INFO [stderr]    Compiling rand v0.3.15
Dec 19 22:07:46.004 INFO [stderr]     Checking rayon v0.8.2
Dec 19 22:07:50.045 INFO [stderr]    Compiling phf_generator v0.7.21
Dec 19 22:07:50.604 INFO [stderr]    Compiling phf_codegen v0.7.21
Dec 19 22:07:51.596 INFO [stderr]    Compiling target_build_utils v0.3.1
Dec 19 22:07:51.752 INFO [stderr]     Checking jpeg-decoder v0.1.13
Dec 19 22:07:54.368 INFO [stderr]     Checking image v0.14.0
Dec 19 22:08:07.030 INFO [stderr]    Compiling libloading v0.3.4
Dec 19 22:08:09.312 INFO [stderr]     Checking dlib v0.3.1
Dec 19 22:08:09.681 INFO [stderr]     Checking wayland-sys v0.9.9
Dec 19 22:08:10.148 INFO [stderr]     Checking wayland-client v0.9.9
Dec 19 22:08:11.796 INFO [stderr]     Checking wayland-kbd v0.9.1
Dec 19 22:08:11.797 INFO [stderr]     Checking wayland-window v0.6.1
Dec 19 22:08:12.872 INFO [stderr]     Checking winit v0.7.5
Dec 19 22:08:14.633 INFO [stderr]     Checking glutin v0.9.2
Dec 19 22:08:16.141 INFO [stderr]     Checking delta v0.1.0 (/opt/crater/workdir)
Dec 19 22:08:17.336 INFO [stderr] warning: variable does not need to be mutable
Dec 19 22:08:17.344 INFO [stderr]   --> examples/box.rs:29:9
Dec 19 22:08:17.344 INFO [stderr]    |
Dec 19 22:08:17.344 INFO [stderr] 29 |     let mut scene = Scene::new("box");
Dec 19 22:08:17.344 INFO [stderr]    |         ----^^^^^
Dec 19 22:08:17.344 INFO [stderr]    |         |
Dec 19 22:08:17.344 INFO [stderr]    |         help: remove this `mut`
Dec 19 22:08:17.344 INFO [stderr]    |
Dec 19 22:08:17.344 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 22:08:17.344 INFO [stderr] 
Dec 19 22:08:17.375 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.91s
Dec 19 22:08:18.054 INFO running `"docker" "inspect" "341431f4455997a1d0157b815ef864ad9266bf2a033e5c4af0a821995231c3bb"`
Dec 19 22:08:18.241 INFO running `"docker" "rm" "-f" "341431f4455997a1d0157b815ef864ad9266bf2a033e5c4af0a821995231c3bb"`
Dec 19 22:08:18.457 INFO [stdout] 341431f4455997a1d0157b815ef864ad9266bf2a033e5c4af0a821995231c3bb