[INFO] updating cached repository https://github.com/squareduck/tarn-zero
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 74eea58b01495ec32898c4f98f4751afde1f997f
[INFO] testing squareduck/tarn-zero against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsquareduck%2Ftarn-zero" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/squareduck/tarn-zero on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/squareduck/tarn-zero
[INFO] finished tweaking git repo https://github.com/squareduck/tarn-zero
[INFO] tweaked toml for git repo https://github.com/squareduck/tarn-zero written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/squareduck/tarn-zero already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 73a18c0b6b11fdbf89696d2f404cca64fc077a9aec8ef1e04f058262c4c14dd5
[INFO] running `"docker" "start" "-a" "73a18c0b6b11fdbf89696d2f404cca64fc077a9aec8ef1e04f058262c4c14dd5"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling tcod-sys v4.1.0
[INFO] [stderr]    Compiling noise v0.1.5
[INFO] [stderr] error[E0432]: unresolved imports `rand::Rand`, `rand::XorShiftRng`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/noise-0.1.5/src/seed.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | use rand::{Rand, Rng, SeedableRng, XorShiftRng};
[INFO] [stderr]    |            ^^^^                    ^^^^^^^^^^^ no `XorShiftRng` in the root
[INFO] [stderr]    |            |
[INFO] [stderr]    |            no `Rand` in the root
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `noise`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "73a18c0b6b11fdbf89696d2f404cca64fc077a9aec8ef1e04f058262c4c14dd5"`
[INFO] running `"docker" "rm" "-f" "73a18c0b6b11fdbf89696d2f404cca64fc077a9aec8ef1e04f058262c4c14dd5"`
[INFO] [stdout] 73a18c0b6b11fdbf89696d2f404cca64fc077a9aec8ef1e04f058262c4c14dd5