[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#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrforrest%2Frustnqueens" "/workspace/builds/worker-78/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-78/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jrforrest/rustnqueens on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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-78/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" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-segmentation v1.0.1
[INFO] [stderr]   Downloaded chan v0.1.18
[INFO] [stderr]   Downloaded chan-signal v0.1.7
[INFO] [stderr]   Downloaded cursive v0.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a62937eb762093d65b875b5ac747cb793d0b874a00f9ea4d3728c8d203b6b55b
[INFO] running `Command { std: "docker" "start" "-a" "a62937eb762093d65b875b5ac747cb793d0b874a00f9ea4d3728c8d203b6b55b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a62937eb762093d65b875b5ac747cb793d0b874a00f9ea4d3728c8d203b6b55b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a62937eb762093d65b875b5ac747cb793d0b874a00f9ea4d3728c8d203b6b55b", kill_on_drop: false }`
[INFO] [stdout] a62937eb762093d65b875b5ac747cb793d0b874a00f9ea4d3728c8d203b6b55b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 222624d381a2ba62547837b58bcafedec396d3e6806b8f9cde51d7cf6158fca0
[INFO] running `Command { std: "docker" "start" "-a" "222624d381a2ba62547837b58bcafedec396d3e6806b8f9cde51d7cf6158fca0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.11
[INFO] [stderr]    Compiling num-traits v0.1.36
[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 lazy_static v0.1.16
[INFO] [stderr]    Compiling cursive v0.3.7
[INFO] [stderr]    Compiling unicode-segmentation v1.0.1
[INFO] [stderr]    Compiling unicode-width v0.1.4
[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 num-integer v0.1.32
[INFO] [stderr]    Compiling num-iter v0.1.32
[INFO] [stderr]    Compiling chan v0.1.18
[INFO] [stderr]    Compiling ncurses v5.85.0
[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 1m 27s
[INFO] running `Command { std: "docker" "inspect" "222624d381a2ba62547837b58bcafedec396d3e6806b8f9cde51d7cf6158fca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "222624d381a2ba62547837b58bcafedec396d3e6806b8f9cde51d7cf6158fca0", kill_on_drop: false }`
[INFO] [stdout] 222624d381a2ba62547837b58bcafedec396d3e6806b8f9cde51d7cf6158fca0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 963959f8c7f9af3b0114db2a65ee060ff4a961ceddc64b9222e1e6ba0df162f2
[INFO] running `Command { std: "docker" "start" "-a" "963959f8c7f9af3b0114db2a65ee060ff4a961ceddc64b9222e1e6ba0df162f2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "963959f8c7f9af3b0114db2a65ee060ff4a961ceddc64b9222e1e6ba0df162f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "963959f8c7f9af3b0114db2a65ee060ff4a961ceddc64b9222e1e6ba0df162f2", kill_on_drop: false }`
[INFO] [stdout] 963959f8c7f9af3b0114db2a65ee060ff4a961ceddc64b9222e1e6ba0df162f2