[INFO] updating cached repository dasdy/maze-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dasdy/maze-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dasdy/maze-rs" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/dasdy/maze-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/dasdy/maze-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dasdy/maze-rs" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/dasdy/maze-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/dasdy/maze-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 23e86b756fce88d03780011353afb16d95d85e94
[INFO] sha for GitHub repo dasdy/maze-rs: 23e86b756fce88d03780011353afb16d95d85e94
[INFO] validating manifest of dasdy/maze-rs on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dasdy/maze-rs on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dasdy/maze-rs
[INFO] finished frobbing dasdy/maze-rs
[INFO] frobbed toml for dasdy/maze-rs written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/dasdy/maze-rs/Cargo.toml
[INFO] started frobbing dasdy/maze-rs
[INFO] finished frobbing dasdy/maze-rs
[INFO] frobbed toml for dasdy/maze-rs written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/dasdy/maze-rs/Cargo.toml
[INFO] crate dasdy/maze-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking dasdy/maze-rs against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-4/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/dasdy/maze-rs:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 93aef6d4c468096a8a4ef31f7916cc5f2c553c98ff2e4aa0afdeb1884259b695
[INFO] running `"docker" "start" "-a" "93aef6d4c468096a8a4ef31f7916cc5f2c553c98ff2e4aa0afdeb1884259b695"`
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling gio v0.6.0
[INFO] [stderr]    Compiling cairo-rs v0.6.0
[INFO] [stderr]    Compiling gdk-pixbuf v0.6.0
[INFO] [stderr]    Compiling pango v0.6.0
[INFO] [stderr]    Compiling gdk v0.10.0
[INFO] [stderr]    Compiling atk v0.6.0
[INFO] [stderr]    Compiling gtk v0.6.0
[INFO] [stderr]    Compiling glib-sys v0.8.0
[INFO] [stderr]    Compiling gobject-sys v0.8.0
[INFO] [stderr]    Compiling gio-sys v0.8.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.8.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.8.0
[INFO] [stderr]    Compiling pango-sys v0.8.0
[INFO] [stderr]    Compiling gdk-sys v0.8.0
[INFO] [stderr]    Compiling atk-sys v0.8.0
[INFO] [stderr]    Compiling gtk-sys v0.8.0
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking num-bigint v0.2.2
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]     Checking glib v0.7.1
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]     Checking num-rational v0.2.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.21.2
[INFO] [stderr]     Checking imageproc v0.18.0
[INFO] [stderr]     Checking rust-mazes v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:16:45
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn binary_tree<U: AbstractCell>(g: &mut CompassGrid<U>, mut r: &mut rand::rngs::ThreadRng) {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn CompassGrid<U>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:52:47
[INFO] [stderr]    |
[INFO] [stderr] 52 | pub fn aldous_broder<T: AbstractCell>(g: &mut AbstractGrid<T>, r: &mut rand::rngs::ThreadRng) {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:73:45
[INFO] [stderr]    |
[INFO] [stderr] 73 | fn unvisited_neighbors<T: AbstractCell>(g: &AbstractGrid<T>, cell_idx: usize) -> Vec<usize> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:78:43
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn visited_neighbors<T: AbstractCell>(g: &AbstractGrid<T>, cell_idx: usize) -> Vec<usize> {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:84:47
[INFO] [stderr]    |
[INFO] [stderr] 84 | pub fn hunt_and_kill<T: AbstractCell>(g: &mut AbstractGrid<T>, r: &mut rand::rngs::ThreadRng) {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generate.rs:109:55
[INFO] [stderr]     |
[INFO] [stderr] 109 | pub fn recursive_backtracker<T: AbstractCell>(g: &mut AbstractGrid<T>, r: &mut rand::rngs::ThreadRng) {
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/solve.rs:36:41
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn initial<T: AbstractCell>(g: &AbstractGrid<T>, start: usize) -> DijkstraStep {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/solve.rs:55:50
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn next_step<T: AbstractCell>(&self, g: &AbstractGrid<T>) -> DijkstraStep {
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/solve.rs:73:53
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn solve_with_longest_path<T: AbstractCell>(g: &AbstractGrid<T>) -> DijkstraStep {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:16:45
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn binary_tree<U: AbstractCell>(g: &mut CompassGrid<U>, mut r: &mut rand::rngs::ThreadRng) {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn CompassGrid<U>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:52:47
[INFO] [stderr]    |
[INFO] [stderr] 52 | pub fn aldous_broder<T: AbstractCell>(g: &mut AbstractGrid<T>, r: &mut rand::rngs::ThreadRng) {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:73:45
[INFO] [stderr]    |
[INFO] [stderr] 73 | fn unvisited_neighbors<T: AbstractCell>(g: &AbstractGrid<T>, cell_idx: usize) -> Vec<usize> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:78:43
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn visited_neighbors<T: AbstractCell>(g: &AbstractGrid<T>, cell_idx: usize) -> Vec<usize> {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:84:47
[INFO] [stderr]    |
[INFO] [stderr] 84 | pub fn hunt_and_kill<T: AbstractCell>(g: &mut AbstractGrid<T>, r: &mut rand::rngs::ThreadRng) {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/generate.rs:109:55
[INFO] [stderr]     |
[INFO] [stderr] 109 | pub fn recursive_backtracker<T: AbstractCell>(g: &mut AbstractGrid<T>, r: &mut rand::rngs::ThreadRng) {
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/solve.rs:36:41
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn initial<T: AbstractCell>(g: &AbstractGrid<T>, start: usize) -> DijkstraStep {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/solve.rs:55:50
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn next_step<T: AbstractCell>(&self, g: &AbstractGrid<T>) -> DijkstraStep {
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/solve.rs:73:53
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn solve_with_longest_path<T: AbstractCell>(g: &AbstractGrid<T>) -> DijkstraStep {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AbstractGrid<T>`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 08s
[INFO] running `"docker" "inspect" "93aef6d4c468096a8a4ef31f7916cc5f2c553c98ff2e4aa0afdeb1884259b695"`
[INFO] running `"docker" "rm" "-f" "93aef6d4c468096a8a4ef31f7916cc5f2c553c98ff2e4aa0afdeb1884259b695"`
[INFO] [stdout] 93aef6d4c468096a8a4ef31f7916cc5f2c553c98ff2e4aa0afdeb1884259b695