[INFO] cloning repository https://github.com/botahamec/checkers_ai
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/botahamec/checkers_ai" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbotahamec%2Fcheckers_ai", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbotahamec%2Fcheckers_ai'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75307f899d5da3537969d2c9ef9221728e44a754
[INFO] checking botahamec/checkers_ai against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbotahamec%2Fcheckers_ai" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/botahamec/checkers_ai on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/botahamec/checkers_ai
[INFO] finished tweaking git repo https://github.com/botahamec/checkers_ai
[INFO] tweaked toml for git repo https://github.com/botahamec/checkers_ai written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/botahamec/checkers_ai already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0891d972901efd726d8dc828f583966985dd7482b857f712adfc0143bd0ea6f3
[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" "0891d972901efd726d8dc828f583966985dd7482b857f712adfc0143bd0ea6f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0891d972901efd726d8dc828f583966985dd7482b857f712adfc0143bd0ea6f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0891d972901efd726d8dc828f583966985dd7482b857f712adfc0143bd0ea6f3", kill_on_drop: false }`
[INFO] [stdout] 0891d972901efd726d8dc828f583966985dd7482b857f712adfc0143bd0ea6f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 273a84d6ce025a12929ae6556c9f2342150e269759d9f969036e5efaf09a070e
[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" "273a84d6ce025a12929ae6556c9f2342150e269759d9f969036e5efaf09a070e", kill_on_drop: false }`
[INFO] [stderr]     Checking model v0.1.0 (/opt/rustwide/workdir/model)
[INFO] [stdout] error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable
[INFO] [stdout]   --> model/src/board/spaces/container.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl<T: Copy> ContainerSpace<T> {
[INFO] [stdout]    |      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]    = help: add `#![feature(const_fn)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `model`
[INFO] [stdout] error[E0723]: trait bounds other than `Sized` on const fn parameters are unstable
[INFO] [stdout]   --> model/src/board/spaces/container.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl<T: Copy> ContainerSpace<T> {
[INFO] [stdout]    |      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]    = help: add `#![feature(const_fn)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] For more information about this error, try `rustc --explain E0723`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stdout] For more information about this error, try `rustc --explain E0723`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "273a84d6ce025a12929ae6556c9f2342150e269759d9f969036e5efaf09a070e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "273a84d6ce025a12929ae6556c9f2342150e269759d9f969036e5efaf09a070e", kill_on_drop: false }`
[INFO] [stdout] 273a84d6ce025a12929ae6556c9f2342150e269759d9f969036e5efaf09a070e