[INFO] cloning repository https://github.com/unixpickle/locky-puzzle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/unixpickle/locky-puzzle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funixpickle%2Flocky-puzzle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funixpickle%2Flocky-puzzle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d32998ca9bb9c21cd261a4fa8e579f5593f3fef
[INFO] testing unixpickle/locky-puzzle against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funixpickle%2Flocky-puzzle" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/unixpickle/locky-puzzle on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/unixpickle/locky-puzzle
[INFO] finished tweaking git repo https://github.com/unixpickle/locky-puzzle
[INFO] tweaked toml for git repo https://github.com/unixpickle/locky-puzzle written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/unixpickle/locky-puzzle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitflags v1.0.2
[INFO] [stderr]   Downloaded atty v0.2.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de1968cd45532d16bde3496aa005d781ad6ade668c76bc160f25adf83a54bde3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "de1968cd45532d16bde3496aa005d781ad6ade668c76bc160f25adf83a54bde3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de1968cd45532d16bde3496aa005d781ad6ade668c76bc160f25adf83a54bde3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de1968cd45532d16bde3496aa005d781ad6ade668c76bc160f25adf83a54bde3", kill_on_drop: false }`
[INFO] [stdout] de1968cd45532d16bde3496aa005d781ad6ade668c76bc160f25adf83a54bde3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89eb7fe4f8acf91db803f7079c4ed451b6136ac8811b19aa8a6187fb7e31febb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "89eb7fe4f8acf91db803f7079c4ed451b6136ac8811b19aa8a6187fb7e31febb", kill_on_drop: false }`
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling bitflags v1.0.2
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling atty v0.2.9
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling locky-puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/heuristic.rs:15:24
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Heuristic for Box<Heuristic> {
[INFO] [stdout]    |                        ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/heuristic.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<'a> Heuristic for &'a Heuristic {
[INFO] [stdout]    |                            ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/multi_step.rs:77:38
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let combo1 = MaxHeuristic::<&Heuristic>(vec![&self.arrow, &self.co_fb, &self.co_rl,
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/multi_step.rs:84:38
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let combo2 = MaxHeuristic::<&Heuristic>(vec![&self.arrow, &self.corner]);
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/multi_step.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         h: &Heuristic,
[INFO] [stdout]     |             ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/thread.rs:26:29
[INFO] [stdout]    |
[INFO] [stdout] 26 |             transmute::<Box<FnMut() + Send + 'a>, _>(boxed)
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/thread.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn spawn_static(mut f: Box<FnMut() + Send + 'static>) -> ThreadScope<'a> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/multi_step.rs:126:30
[INFO] [stdout]     |
[INFO] [stdout] 126 |         write!(f, "{}", self.description())
[INFO] [stdout]     |                              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tools/solve/heuristic.rs:14:74
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn make_heuristic(args: &HeuristicArgs) -> Receiver<MaxHeuristic<Box<Heuristic>>> {
[INFO] [stdout]    |                                                                          ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tools/solve/heuristic.rs:37:59
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let (send_agg, recv_agg) = channel::<MaxHeuristic<Box<Heuristic>>>();
[INFO] [stdout]    |                                                           ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tools/solve/heuristic.rs:39:33
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let heuristics: Vec<Box<Heuristic>> = recv_individual.into_iter().collect();
[INFO] [stdout]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tools/solve/heuristic.rs:45:73
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn make_proj_heuristic<P: Proj + 'static>(depth: u8, sender: Sender<Box<Heuristic>>) {
[INFO] [stdout]    |                                                                         ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.26s
[INFO] running `Command { std: "docker" "inspect" "89eb7fe4f8acf91db803f7079c4ed451b6136ac8811b19aa8a6187fb7e31febb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89eb7fe4f8acf91db803f7079c4ed451b6136ac8811b19aa8a6187fb7e31febb", kill_on_drop: false }`
[INFO] [stdout] 89eb7fe4f8acf91db803f7079c4ed451b6136ac8811b19aa8a6187fb7e31febb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 059f0b263468f9d40da079993b9dfe374446aa7046a7245bcae038daa37338e4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "059f0b263468f9d40da079993b9dfe374446aa7046a7245bcae038daa37338e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling locky-puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/heuristic.rs:15:24
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Heuristic for Box<Heuristic> {
[INFO] [stdout]    |                        ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/heuristic.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<'a> Heuristic for &'a Heuristic {
[INFO] [stdout]    |                            ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/multi_step.rs:77:38
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let combo1 = MaxHeuristic::<&Heuristic>(vec![&self.arrow, &self.co_fb, &self.co_rl,
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/multi_step.rs:84:38
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let combo2 = MaxHeuristic::<&Heuristic>(vec![&self.arrow, &self.corner]);
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/multi_step.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         h: &Heuristic,
[INFO] [stdout]     |             ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/thread.rs:26:29
[INFO] [stdout]    |
[INFO] [stdout] 26 |             transmute::<Box<FnMut() + Send + 'a>, _>(boxed)
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/thread.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn spawn_static(mut f: Box<FnMut() + Send + 'static>) -> ThreadScope<'a> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/multi_step.rs:126:30
[INFO] [stdout]     |
[INFO] [stdout] 126 |         write!(f, "{}", self.description())
[INFO] [stdout]     |                              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tools/solve/heuristic.rs:14:74
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn make_heuristic(args: &HeuristicArgs) -> Receiver<MaxHeuristic<Box<Heuristic>>> {
[INFO] [stdout]    |                                                                          ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tools/solve/heuristic.rs:37:59
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let (send_agg, recv_agg) = channel::<MaxHeuristic<Box<Heuristic>>>();
[INFO] [stdout]    |                                                           ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tools/solve/heuristic.rs:39:33
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let heuristics: Vec<Box<Heuristic>> = recv_individual.into_iter().collect();
[INFO] [stdout]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tools/solve/heuristic.rs:45:73
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn make_proj_heuristic<P: Proj + 'static>(depth: u8, sender: Sender<Box<Heuristic>>) {
[INFO] [stdout]    |                                                                         ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/heuristic.rs:15:24
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Heuristic for Box<Heuristic> {
[INFO] [stdout]    |                        ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/heuristic.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<'a> Heuristic for &'a Heuristic {
[INFO] [stdout]    |                            ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/multi_step.rs:77:38
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let combo1 = MaxHeuristic::<&Heuristic>(vec![&self.arrow, &self.co_fb, &self.co_rl,
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/multi_step.rs:84:38
[INFO] [stdout]    |
[INFO] [stdout] 84 |         let combo2 = MaxHeuristic::<&Heuristic>(vec![&self.arrow, &self.corner]);
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/multi_step.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         h: &Heuristic,
[INFO] [stdout]     |             ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/thread.rs:26:29
[INFO] [stdout]    |
[INFO] [stdout] 26 |             transmute::<Box<FnMut() + Send + 'a>, _>(boxed)
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/thread.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn spawn_static(mut f: Box<FnMut() + Send + 'static>) -> ThreadScope<'a> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/multi_step.rs:126:30
[INFO] [stdout]     |
[INFO] [stdout] 126 |         write!(f, "{}", self.description())
[INFO] [stdout]     |                              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.62s
[INFO] running `Command { std: "docker" "inspect" "059f0b263468f9d40da079993b9dfe374446aa7046a7245bcae038daa37338e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "059f0b263468f9d40da079993b9dfe374446aa7046a7245bcae038daa37338e4", kill_on_drop: false }`
[INFO] [stdout] 059f0b263468f9d40da079993b9dfe374446aa7046a7245bcae038daa37338e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 25b97429c34c2d93a7c317117c1021190c542f55ef8911bf75354f490e4403bb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "25b97429c34c2d93a7c317117c1021190c542f55ef8911bf75354f490e4403bb", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/heuristic.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 | impl Heuristic for Box<Heuristic> {
[INFO] [stderr]    |                        ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/heuristic.rs:21:28
[INFO] [stderr]    |
[INFO] [stderr] 21 | impl<'a> Heuristic for &'a Heuristic {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/multi_step.rs:77:38
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let combo1 = MaxHeuristic::<&Heuristic>(vec![&self.arrow, &self.co_fb, &self.co_rl,
[INFO] [stderr]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/multi_step.rs:84:38
[INFO] [stderr]    |
[INFO] [stderr] 84 |         let combo2 = MaxHeuristic::<&Heuristic>(vec![&self.arrow, &self.corner]);
[INFO] [stderr]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/multi_step.rs:102:13
[INFO] [stderr]     |
[INFO] [stderr] 102 |         h: &Heuristic,
[INFO] [stderr]     |             ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/thread.rs:26:29
[INFO] [stderr]    |
[INFO] [stderr] 26 |             transmute::<Box<FnMut() + Send + 'a>, _>(boxed)
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send + 'a`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/thread.rs:31:32
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn spawn_static(mut f: Box<FnMut() + Send + 'static>) -> ThreadScope<'a> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/multi_step.rs:126:30
[INFO] [stderr]     |
[INFO] [stderr] 126 |         write!(f, "{}", self.description())
[INFO] [stderr]     |                              ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/heuristic.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 | impl Heuristic for Box<Heuristic> {
[INFO] [stderr]    |                        ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/heuristic.rs:21:28
[INFO] [stderr]    |
[INFO] [stderr] 21 | impl<'a> Heuristic for &'a Heuristic {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/multi_step.rs:77:38
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let combo1 = MaxHeuristic::<&Heuristic>(vec![&self.arrow, &self.co_fb, &self.co_rl,
[INFO] [stderr]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/multi_step.rs:84:38
[INFO] [stderr]    |
[INFO] [stderr] 84 |         let combo2 = MaxHeuristic::<&Heuristic>(vec![&self.arrow, &self.corner]);
[INFO] [stderr]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/multi_step.rs:102:13
[INFO] [stderr]     |
[INFO] [stderr] 102 |         h: &Heuristic,
[INFO] [stderr]     |             ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/thread.rs:26:29
[INFO] [stderr]    |
[INFO] [stderr] 26 |             transmute::<Box<FnMut() + Send + 'a>, _>(boxed)
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send + 'a`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/thread.rs:31:32
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn spawn_static(mut f: Box<FnMut() + Send + 'static>) -> ThreadScope<'a> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() + Send + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/multi_step.rs:126:30
[INFO] [stderr]     |
[INFO] [stderr] 126 |         write!(f, "{}", self.description())
[INFO] [stderr]     |                              ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tools/solve/heuristic.rs:14:74
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn make_heuristic(args: &HeuristicArgs) -> Receiver<MaxHeuristic<Box<Heuristic>>> {
[INFO] [stderr]    |                                                                          ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tools/solve/heuristic.rs:37:59
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let (send_agg, recv_agg) = channel::<MaxHeuristic<Box<Heuristic>>>();
[INFO] [stderr]    |                                                           ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tools/solve/heuristic.rs:39:33
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let heuristics: Vec<Box<Heuristic>> = recv_individual.into_iter().collect();
[INFO] [stderr]    |                                 ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tools/solve/heuristic.rs:45:73
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn make_proj_heuristic<P: Proj + 'static>(depth: u8, sender: Sender<Box<Heuristic>>) {
[INFO] [stderr]    |                                                                         ^^^^^^^^^ help: use `dyn`: `dyn Heuristic`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/locky_puzzle-24ef9e7ca6916398)
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test moves::tests::short_scramble_f2_l3 ... ok
[INFO] [stdout] test moves::tests::r_move ... ok
[INFO] [stdout] test moves::tests::short_scramble_d_b2 ... ok
[INFO] [stdout] test moves::tests::long_scramble ... ok
[INFO] [stdout] test solve::tests::zero_move_scramble ... ok
[INFO] [stdout] test moves::tests::parse_algo ... ok
[INFO] [stdout] test state::tests::solved_display ... ok
[INFO] [stdout] test moves::tests::short_scramble_u3_r2 ... ok
[INFO] [stdout] test moves::tests::stringify_algo ... ok
[INFO] [stdout] test moves::tests::u_move ... ok
[INFO] [stdout] test solve::tests::proj_simpler_solution ... ok
[INFO] [stdout] test moves::tests::b_move ... ok
[INFO] [stdout] test solve::tests::one_move_scramble ... ok
[INFO] [stdout] test solve::tests::not_enough_depth ... ok
[INFO] [stdout] test solve::tests::proj_five_move_scramble ... ok
[INFO] [stdout] test solve::tests::five_move_scramble ... ok
[INFO] [stdout] test heuristic::tests::generate_heuristic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.36s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bench_heuristic-dd5ec944807ff71d)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bench_solve-081123fdc73b1bff)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/locky_scramble-2c32fa3ec4d468cb)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/locky_solve-4763b0246709dee4)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests locky_puzzle
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "25b97429c34c2d93a7c317117c1021190c542f55ef8911bf75354f490e4403bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25b97429c34c2d93a7c317117c1021190c542f55ef8911bf75354f490e4403bb", kill_on_drop: false }`
[INFO] [stdout] 25b97429c34c2d93a7c317117c1021190c542f55ef8911bf75354f490e4403bb