[INFO] updating cached repository https://github.com/unixpickle/locky-puzzle
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5d32998ca9bb9c21cd261a4fa8e579f5593f3fef
[INFO] checking unixpickle/locky-puzzle against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funixpickle%2Flocky-puzzle" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/unixpickle/locky-puzzle on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-0/source/Cargo.toml
[INFO] crate git repo https://github.com/unixpickle/locky-puzzle already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b719677baf61800ab8daaffb94066ea286ded817e6275eea3b761120e10276db
[INFO] running `"docker" "start" "-a" "b719677baf61800ab8daaffb94066ea286ded817e6275eea3b761120e10276db"`
[INFO] [stderr]     Checking bitflags v1.0.2
[INFO] [stderr]     Checking atty v0.2.9
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking locky-puzzle v0.1.0 (/opt/rustwide/workdir)
[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] 
[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: 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] 
[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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: use of deprecated item '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: use of deprecated item '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: 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] 
[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: 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: 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: 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] 
[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: 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: 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: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.07s
[INFO] running `"docker" "inspect" "b719677baf61800ab8daaffb94066ea286ded817e6275eea3b761120e10276db"`
[INFO] running `"docker" "rm" "-f" "b719677baf61800ab8daaffb94066ea286ded817e6275eea3b761120e10276db"`
[INFO] [stdout] b719677baf61800ab8daaffb94066ea286ded817e6275eea3b761120e10276db