[INFO] updating cached repository https://github.com/subnomo/MCC-Trainer
[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] d957e9855d2ebf57f6a6c518b663729ddc609a37
[INFO] testing subnomo/MCC-Trainer against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsubnomo%2FMCC-Trainer" "/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/subnomo/MCC-Trainer 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/subnomo/MCC-Trainer
[INFO] finished tweaking git repo https://github.com/subnomo/MCC-Trainer
[INFO] tweaked toml for git repo https://github.com/subnomo/MCC-Trainer written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/subnomo/MCC-Trainer 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] 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] 7878dd0e5f48210305497a3564f6de416ad46cfb8d0fdd9234fda153817876eb
[INFO] running `"docker" "start" "-a" "7878dd0e5f48210305497a3564f6de416ad46cfb8d0fdd9234fda153817876eb"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling mcc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: could not find `windows` in `os`
[INFO] [stderr]  --> src/ke_interface.rs:3:14
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::os::windows::ffi::OsStrExt;
[INFO] [stderr]   |              ^^^^^^^ could not find `windows` in `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `encode_wide` found for reference `&std::ffi::OsStr` in the current scope
[INFO] [stderr]   --> src/ke_interface.rs:61:14
[INFO] [stderr]    |
[INFO] [stderr] 61 |             .encode_wide()
[INFO] [stderr]    |              ^^^^^^^^^^^ method not found in `&std::ffi::OsStr`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `encode_wide` found for reference `&std::ffi::OsStr` in the current scope
[INFO] [stderr]   --> src/ke_interface.rs:95:14
[INFO] [stderr]    |
[INFO] [stderr] 95 |             .encode_wide()
[INFO] [stderr]    |              ^^^^^^^^^^^ method not found in `&std::ffi::OsStr`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0433, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `mcc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7878dd0e5f48210305497a3564f6de416ad46cfb8d0fdd9234fda153817876eb"`
[INFO] running `"docker" "rm" "-f" "7878dd0e5f48210305497a3564f6de416ad46cfb8d0fdd9234fda153817876eb"`
[INFO] [stdout] 7878dd0e5f48210305497a3564f6de416ad46cfb8d0fdd9234fda153817876eb