[INFO] cloning repository https://github.com/aragonnetje6/a-player-of-chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aragonnetje6/a-player-of-chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faragonnetje6%2Fa-player-of-chess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faragonnetje6%2Fa-player-of-chess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 383f9d3ce6c9225f811fe7ca3cefea4184c35f39
[INFO] building aragonnetje6/a-player-of-chess against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faragonnetje6%2Fa-player-of-chess" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aragonnetje6/a-player-of-chess on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aragonnetje6/a-player-of-chess
[INFO] finished tweaking git repo https://github.com/aragonnetje6/a-player-of-chess
[INFO] tweaked toml for git repo https://github.com/aragonnetje6/a-player-of-chess written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/aragonnetje6/a-player-of-chess already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded text_io v0.1.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1fd0bcfa046fbd76f801690695409dc4ea565df3404edfdb78e4fbe17cfb3441
[INFO] running `Command { std: "docker" "start" "-a" "1fd0bcfa046fbd76f801690695409dc4ea565df3404edfdb78e4fbe17cfb3441", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1fd0bcfa046fbd76f801690695409dc4ea565df3404edfdb78e4fbe17cfb3441", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fd0bcfa046fbd76f801690695409dc4ea565df3404edfdb78e4fbe17cfb3441", kill_on_drop: false }`
[INFO] [stdout] 1fd0bcfa046fbd76f801690695409dc4ea565df3404edfdb78e4fbe17cfb3441
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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 -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 338af9d9e3ba65d3ddfd249c59abe3b539eb82d359d012b3482e53b707cfc69b
[INFO] running `Command { std: "docker" "start" "-a" "338af9d9e3ba65d3ddfd249c59abe3b539eb82d359d012b3482e53b707cfc69b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling text_io v0.1.10
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling a-player-of-chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `is_some_with`
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(is_some_with)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0614]: type `Piece` cannot be dereferenced
[INFO] [stdout]    --> src/main.rs:166:49
[INFO] [stdout]     |
[INFO] [stdout] 166 |             && self.board[r][0].is_some_and(|p| *p == Piece::new(colour, Rook(true)))
[INFO] [stdout]     |                                                 ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0614]: type `Piece` cannot be dereferenced
[INFO] [stdout]    --> src/main.rs:176:49
[INFO] [stdout]     |
[INFO] [stdout] 176 |             && self.board[r][7].is_some_and(|p| *p == Piece::new(colour, Rook(true)))
[INFO] [stdout]     |                                                 ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0614, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0614`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `a-player-of-chess` (bin "a-player-of-chess") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "338af9d9e3ba65d3ddfd249c59abe3b539eb82d359d012b3482e53b707cfc69b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "338af9d9e3ba65d3ddfd249c59abe3b539eb82d359d012b3482e53b707cfc69b", kill_on_drop: false }`
[INFO] [stdout] 338af9d9e3ba65d3ddfd249c59abe3b539eb82d359d012b3482e53b707cfc69b