[INFO] cloning repository https://github.com/jrforrest/rustnqueens
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jrforrest/rustnqueens" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrforrest%2Frustnqueens", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrforrest%2Frustnqueens'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 57d595004bbfda907263040f21e8be7898264d8c
[INFO] testing jrforrest/rustnqueens against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrforrest%2Frustnqueens" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jrforrest/rustnqueens on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jrforrest/rustnqueens
[INFO] finished tweaking git repo https://github.com/jrforrest/rustnqueens
[INFO] tweaked toml for git repo https://github.com/jrforrest/rustnqueens written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jrforrest/rustnqueens already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2dac8f0f2b1cf9c87673b8ffacb7b8894ede49c1be077d6e60b58edb6bd66c22
[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" "2dac8f0f2b1cf9c87673b8ffacb7b8894ede49c1be077d6e60b58edb6bd66c22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dac8f0f2b1cf9c87673b8ffacb7b8894ede49c1be077d6e60b58edb6bd66c22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dac8f0f2b1cf9c87673b8ffacb7b8894ede49c1be077d6e60b58edb6bd66c22", kill_on_drop: false }`
[INFO] [stdout] 2dac8f0f2b1cf9c87673b8ffacb7b8894ede49c1be077d6e60b58edb6bd66c22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0e72dc6da20bb1cf922f8179b360a3967581248f359706b14c002c5ac2be8be
[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" "c0e72dc6da20bb1cf922f8179b360a3967581248f359706b14c002c5ac2be8be", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.11
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling gcc v0.3.41
[INFO] [stderr]    Compiling bit-vec v0.4.3
[INFO] [stderr]    Compiling cursive v0.3.7
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling unicode-segmentation v1.0.1
[INFO] [stderr]    Compiling odds v0.2.25
[INFO] [stderr]    Compiling bit-set v0.2.0
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling ncurses v5.85.0
[INFO] [stderr]    Compiling chan v0.1.18
[INFO] [stderr]    Compiling chan-signal v0.1.7
[INFO] [stderr]    Compiling num-bigint v0.1.35
[INFO] [stderr]    Compiling num-complex v0.1.35
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling num-rational v0.1.35
[INFO] [stderr]    Compiling num v0.1.36
[INFO] [stderr]    Compiling rustnqueens v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.62s
[INFO] running `Command { std: "docker" "inspect" "c0e72dc6da20bb1cf922f8179b360a3967581248f359706b14c002c5ac2be8be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0e72dc6da20bb1cf922f8179b360a3967581248f359706b14c002c5ac2be8be", kill_on_drop: false }`
[INFO] [stdout] c0e72dc6da20bb1cf922f8179b360a3967581248f359706b14c002c5ac2be8be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 472e24b2ad38fd00f57194b619e6c2be6e6a0d0f205d38a30aa8135ae29e0ac4
[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" "472e24b2ad38fd00f57194b619e6c2be6e6a0d0f205d38a30aa8135ae29e0ac4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustnqueens v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no function or associated item named `from_board` found for struct `Solution` in the current scope
[INFO] [stdout]   --> src/solution.rs:48:30
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub struct Solution {
[INFO] [stdout]    | ------------------- function or associated item `from_board` not found for this
[INFO] [stdout] ...
[INFO] [stdout] 48 |     let solution = Solution::from_board(&board);
[INFO] [stdout]    |                              ^^^^^^^^^^ function or associated item not found in `Solution`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustnqueens` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "472e24b2ad38fd00f57194b619e6c2be6e6a0d0f205d38a30aa8135ae29e0ac4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "472e24b2ad38fd00f57194b619e6c2be6e6a0d0f205d38a30aa8135ae29e0ac4", kill_on_drop: false }`
[INFO] [stdout] 472e24b2ad38fd00f57194b619e6c2be6e6a0d0f205d38a30aa8135ae29e0ac4