[INFO] cloning repository https://github.com/rachelseng/rust_HeuristicGameTree
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rachelseng/rust_HeuristicGameTree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frachelseng%2Frust_HeuristicGameTree"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frachelseng%2Frust_HeuristicGameTree'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 179d23549cb1ef90bf74401d4f2bd5512919e801
[INFO] checking rachelseng/rust_HeuristicGameTree against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frachelseng%2Frust_HeuristicGameTree" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rachelseng/rust_HeuristicGameTree 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/rachelseng/rust_HeuristicGameTree
[INFO] finished tweaking git repo https://github.com/rachelseng/rust_HeuristicGameTree
[INFO] tweaked toml for git repo https://github.com/rachelseng/rust_HeuristicGameTree written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/rachelseng/rust_HeuristicGameTree already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 886afa0226b3a574171cab136c5e27e937f9afaac825653d49dbb365b4ead45c
[INFO] running `"docker" "start" "-a" "886afa0226b3a574171cab136c5e27e937f9afaac825653d49dbb365b4ead45c"`
[INFO] [stderr]     Checking heuristic_game_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/checkers.rs:304:37
[INFO] [stderr]     |
[INFO] [stderr] 304 |     fn possible_moves(&self) -> Box<Iterator<Item = (usize, usize, Option<usize>)> + '_> {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (usize, usize, Option<usize>)> + '_`
[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/connect4.rs:10:37
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn possible_moves(&self) -> Box<Iterator<Item = Self::Move> + '_> {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Self::Move> + '_`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tictactoe.rs:22:37
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn possible_moves(&self) -> Box<Iterator<Item = Self::Move> + '_> {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Self::Move> + '_`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:61:37
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn possible_moves(&self) -> Box<Iterator<Item = Self::Move> + '_>;
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Self::Move> + '_`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/checkers.rs:304:37
[INFO] [stderr]     |
[INFO] [stderr] 304 |     fn possible_moves(&self) -> Box<Iterator<Item = (usize, usize, Option<usize>)> + '_> {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (usize, usize, Option<usize>)> + '_`
[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/connect4.rs:10:37
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn possible_moves(&self) -> Box<Iterator<Item = Self::Move> + '_> {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Self::Move> + '_`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tictactoe.rs:22:37
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn possible_moves(&self) -> Box<Iterator<Item = Self::Move> + '_> {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Self::Move> + '_`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:61:37
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn possible_moves(&self) -> Box<Iterator<Item = Self::Move> + '_>;
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Self::Move> + '_`
[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 1.90s
[INFO] running `"docker" "inspect" "886afa0226b3a574171cab136c5e27e937f9afaac825653d49dbb365b4ead45c"`
[INFO] running `"docker" "rm" "-f" "886afa0226b3a574171cab136c5e27e937f9afaac825653d49dbb365b4ead45c"`
[INFO] [stdout] 886afa0226b3a574171cab136c5e27e937f9afaac825653d49dbb365b4ead45c