[INFO] cloning repository https://github.com/AntonHermann/Quart
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AntonHermann/Quart" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAntonHermann%2FQuart", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAntonHermann%2FQuart'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45b6ecb3b8c8de25bfced3c7710d3aa3e2e24121
[INFO] checking AntonHermann/Quart against beta-2021-10-15 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAntonHermann%2FQuart" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AntonHermann/Quart on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AntonHermann/Quart
[INFO] finished tweaking git repo https://github.com/AntonHermann/Quart
[INFO] tweaked toml for git repo https://github.com/AntonHermann/Quart written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/AntonHermann/Quart already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded listenfd v0.3.3
[INFO] [stderr]   Downloaded backtrace v0.3.44
[INFO] [stderr]   Downloaded enum-as-inner v0.3.1
[INFO] [stderr]   Downloaded flexi_logger v0.14.8
[INFO] [stderr]   Downloaded aho-corasick v0.7.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", 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] fd47fff00d2ec49907435f9ac5606beaf53fc47187a9afd92d86238f1c7895d0
[INFO] running `Command { std: "docker" "start" "-a" "fd47fff00d2ec49907435f9ac5606beaf53fc47187a9afd92d86238f1c7895d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd47fff00d2ec49907435f9ac5606beaf53fc47187a9afd92d86238f1c7895d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd47fff00d2ec49907435f9ac5606beaf53fc47187a9afd92d86238f1c7895d0", kill_on_drop: false }`
[INFO] [stdout] fd47fff00d2ec49907435f9ac5606beaf53fc47187a9afd92d86238f1c7895d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ce0a6816e7d54ae976810539b462e0f128426a2dce9fa6d871cf9e8042ba043
[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" "8ce0a6816e7d54ae976810539b462e0f128426a2dce9fa6d871cf9e8042ba043", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking bytestring v0.1.4
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking listenfd v0.3.3
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking backtrace-sys v0.1.32
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking brotli-sys v0.3.2
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking resolv-conf v0.6.2
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking flexi_logger v0.14.8
[INFO] [stderr]     Checking quart_lib v0.1.0 (/opt/rustwide/workdir/quart_lib)
[INFO] [stdout] error[E0600]: cannot apply unary operator `!` to type `Option<String>`
[INFO] [stdout]    --> quart_lib/src/board.rs:249:5
[INFO] [stdout]     |
[INFO] [stdout] 249 |     assert!(check_fields(&[p_bdrf, p_bdrf, p_bdrf, p_bdrf]), "all equal");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot apply unary operator `!`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0600]: cannot apply unary operator `!` to type `Option<String>`
[INFO] [stdout]    --> quart_lib/src/board.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 250 | /     assert!(
[INFO] [stdout] 251 | |         check_fields(&[p_bdrf, p_BdRf, p_bDrf, p_BDrf]),
[INFO] [stdout] 252 | |         "all not flat"
[INFO] [stdout] 253 | |     );
[INFO] [stdout]     | |______^ cannot apply unary operator `!`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0600]: cannot apply unary operator `!` to type `Option<String>`
[INFO] [stdout]    --> quart_lib/src/board.rs:254:13
[INFO] [stdout]     |
[INFO] [stdout] 254 |     assert!(!check_fields(&[p_bdrf, p_bdrf, p_bdrf, None]), "1 none");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot apply unary operator `!`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0600]: cannot apply unary operator `!` to type `Option<String>`
[INFO] [stdout]    --> quart_lib/src/board.rs:256:9
[INFO] [stdout]     |
[INFO] [stdout] 256 |         !check_fields(&[p_bdrf, p_BdRf, p_bDrf, p_BDrF]),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot apply unary operator `!`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0600`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `quart_lib` due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8ce0a6816e7d54ae976810539b462e0f128426a2dce9fa6d871cf9e8042ba043", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ce0a6816e7d54ae976810539b462e0f128426a2dce9fa6d871cf9e8042ba043", kill_on_drop: false }`
[INFO] [stdout] 8ce0a6816e7d54ae976810539b462e0f128426a2dce9fa6d871cf9e8042ba043