[INFO] fetching crate variant 0.1.0...
[INFO] checking variant-0.1.0 against beta for pr-78714
[INFO] extracting crate variant 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate variant 0.1.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate variant 0.1.0
[INFO] finished tweaking crates.io crate variant 0.1.0
[INFO] tweaked toml for crates.io crate variant 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a30eccfb0aa3b01c1e4e1345b1c42990ad0770a7500e138029dfa6b17b5ccce
[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" "0a30eccfb0aa3b01c1e4e1345b1c42990ad0770a7500e138029dfa6b17b5ccce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a30eccfb0aa3b01c1e4e1345b1c42990ad0770a7500e138029dfa6b17b5ccce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a30eccfb0aa3b01c1e4e1345b1c42990ad0770a7500e138029dfa6b17b5ccce", kill_on_drop: false }`
[INFO] [stdout] 0a30eccfb0aa3b01c1e4e1345b1c42990ad0770a7500e138029dfa6b17b5ccce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 2d957caafd13cdf09ae62794a6913f953420523facd49e969a60a58e4393036d
[INFO] running `Command { std: "docker" "start" "-a" "2d957caafd13cdf09ae62794a6913f953420523facd49e969a60a58e4393036d", kill_on_drop: false }`
[INFO] [stderr]     Checking mersenne_twister v1.1.1
[INFO] [stderr]     Checking variant v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `variety`
[INFO] [stdout]  --> benches/experiment_gen.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use variety::experiments;
[INFO] [stdout]   |     ^^^^^^^ use of undeclared crate or module `variety`
[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 E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `variant`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "2d957caafd13cdf09ae62794a6913f953420523facd49e969a60a58e4393036d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d957caafd13cdf09ae62794a6913f953420523facd49e969a60a58e4393036d", kill_on_drop: false }`
[INFO] [stdout] 2d957caafd13cdf09ae62794a6913f953420523facd49e969a60a58e4393036d