[INFO] cloning repository https://github.com/johnedmonds/chance
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnedmonds/chance" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnedmonds%2Fchance", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnedmonds%2Fchance'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5b0c74a7cd35b4148bf1406a406490313f5e2f4c
[INFO] building johnedmonds/chance against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnedmonds%2Fchance" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnedmonds/chance on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/johnedmonds/chance
[INFO] finished tweaking git repo https://github.com/johnedmonds/chance
[INFO] tweaked toml for git repo https://github.com/johnedmonds/chance written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/johnedmonds/chance already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a89ec28bafaf33c324d2a4fe3fb62f6d93551dc027f8a4c5382c0b942a82eff4
[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" "a89ec28bafaf33c324d2a4fe3fb62f6d93551dc027f8a4c5382c0b942a82eff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a89ec28bafaf33c324d2a4fe3fb62f6d93551dc027f8a4c5382c0b942a82eff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a89ec28bafaf33c324d2a4fe3fb62f6d93551dc027f8a4c5382c0b942a82eff4", kill_on_drop: false }`
[INFO] [stdout] a89ec28bafaf33c324d2a4fe3fb62f6d93551dc027f8a4c5382c0b942a82eff4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4189a72d653012ce19165a746b82e3e52db3612276a50a895dacf6c69522a17
[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" "a4189a72d653012ce19165a746b82e3e52db3612276a50a895dacf6c69522a17", kill_on_drop: false }`
[INFO] [stderr]    Compiling chancegamesolver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:158:10
[INFO] [stdout]     |
[INFO] [stdout] 158 | ) -> Box<Iterator<Item = Operation<T>>> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 158 - ) -> Box<Iterator<Item = Operation<T>>> {
[INFO] [stdout] 158 + ) -> Box<dyn Iterator<Item = Operation<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:193:65
[INFO] [stdout]     |
[INFO] [stdout] 193 | fn permutations<T: 'static + Clone + Debug>(vec: Vec<T>) -> Box<Iterator<Item = Vec<T>>> {
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 193 - fn permutations<T: 'static + Clone + Debug>(vec: Vec<T>) -> Box<Iterator<Item = Vec<T>>> {
[INFO] [stdout] 193 + fn permutations<T: 'static + Clone + Debug>(vec: Vec<T>) -> Box<dyn Iterator<Item = Vec<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:164:33
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let sub_operations: Box<Iterator<Item = Operation<T>>> = generate_operations(operands);
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 164 -         let sub_operations: Box<Iterator<Item = Operation<T>>> = generate_operations(operands);
[INFO] [stdout] 164 +         let sub_operations: Box<dyn Iterator<Item = Operation<T>>> = generate_operations(operands);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.50s
[INFO] running `Command { std: "docker" "inspect" "a4189a72d653012ce19165a746b82e3e52db3612276a50a895dacf6c69522a17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4189a72d653012ce19165a746b82e3e52db3612276a50a895dacf6c69522a17", kill_on_drop: false }`
[INFO] [stdout] a4189a72d653012ce19165a746b82e3e52db3612276a50a895dacf6c69522a17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9c1e4b7d4e794787ab62cb95deab7f87106d73bc938ba4aa9fea18eea33fdeaa
[INFO] running `Command { std: "docker" "start" "-a" "9c1e4b7d4e794787ab62cb95deab7f87106d73bc938ba4aa9fea18eea33fdeaa", kill_on_drop: false }`
[INFO] [stderr]    Compiling chancegamesolver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:158:10
[INFO] [stdout]     |
[INFO] [stdout] 158 | ) -> Box<Iterator<Item = Operation<T>>> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 158 - ) -> Box<Iterator<Item = Operation<T>>> {
[INFO] [stdout] 158 + ) -> Box<dyn Iterator<Item = Operation<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:193:65
[INFO] [stdout]     |
[INFO] [stdout] 193 | fn permutations<T: 'static + Clone + Debug>(vec: Vec<T>) -> Box<Iterator<Item = Vec<T>>> {
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 193 - fn permutations<T: 'static + Clone + Debug>(vec: Vec<T>) -> Box<Iterator<Item = Vec<T>>> {
[INFO] [stdout] 193 + fn permutations<T: 'static + Clone + Debug>(vec: Vec<T>) -> Box<dyn Iterator<Item = Vec<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:164:33
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let sub_operations: Box<Iterator<Item = Operation<T>>> = generate_operations(operands);
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 164 -         let sub_operations: Box<Iterator<Item = Operation<T>>> = generate_operations(operands);
[INFO] [stdout] 164 +         let sub_operations: Box<dyn Iterator<Item = Operation<T>>> = generate_operations(operands);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.07s
[INFO] running `Command { std: "docker" "inspect" "9c1e4b7d4e794787ab62cb95deab7f87106d73bc938ba4aa9fea18eea33fdeaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c1e4b7d4e794787ab62cb95deab7f87106d73bc938ba4aa9fea18eea33fdeaa", kill_on_drop: false }`
[INFO] [stdout] 9c1e4b7d4e794787ab62cb95deab7f87106d73bc938ba4aa9fea18eea33fdeaa