[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] checking unixpickle/locky-puzzle against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funixpickle%2Flocky-puzzle" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[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 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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-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 `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1322b616e996384eddb1ed98fafe63a0ab5d55629c8c1352e1417eb0969b3f6
[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" "c1322b616e996384eddb1ed98fafe63a0ab5d55629c8c1352e1417eb0969b3f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1322b616e996384eddb1ed98fafe63a0ab5d55629c8c1352e1417eb0969b3f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1322b616e996384eddb1ed98fafe63a0ab5d55629c8c1352e1417eb0969b3f6", kill_on_drop: false }`
[INFO] [stdout] c1322b616e996384eddb1ed98fafe63a0ab5d55629c8c1352e1417eb0969b3f6
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd81311db7d7eac8d817c09a61c359a8b3c04bc17a30bb48f7bf89eadb58117f
[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" "cd81311db7d7eac8d817c09a61c359a8b3c04bc17a30bb48f7bf89eadb58117f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking bitflags v1.0.2
[INFO] [stderr]     Checking textwrap v0.9.0
[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] [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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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: 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: 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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.86s
[INFO] running `Command { std: "docker" "inspect" "cd81311db7d7eac8d817c09a61c359a8b3c04bc17a30bb48f7bf89eadb58117f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd81311db7d7eac8d817c09a61c359a8b3c04bc17a30bb48f7bf89eadb58117f", kill_on_drop: false }`
[INFO] [stdout] cd81311db7d7eac8d817c09a61c359a8b3c04bc17a30bb48f7bf89eadb58117f