[INFO] updating cached repository https://github.com/subnomo/MCC-Trainer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsubnomo%2FMCC-Trainer" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/subnomo/MCC-Trainer on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "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 work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/subnomo/MCC-Trainer already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 30108388ce656ae77b67ebc168fd2977d33f13e541442dfba1acf2d7b1295d3c
[INFO] running `"docker" "start" "-a" "30108388ce656ae77b67ebc168fd2977d33f13e541442dfba1acf2d7b1295d3c"`
[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] warning: unused import: `std::os::windows::ffi::OsStrExt`
[INFO] [stderr]  --> src/ke_interface.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::os::windows::ffi::OsStrExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `encode_wide` found for type `&std::ffi::OsStr` in the current scope
[INFO] [stderr]   --> src/ke_interface.rs:61:14
[INFO] [stderr]    |
[INFO] [stderr] 61 |             .encode_wide()
[INFO] [stderr]    |              ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `encode_wide` found for type `&std::ffi::OsStr` in the current scope
[INFO] [stderr]   --> src/ke_interface.rs:95:14
[INFO] [stderr]    |
[INFO] [stderr] 95 |             .encode_wide()
[INFO] [stderr]    |              ^^^^^^^^^^^
[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" "30108388ce656ae77b67ebc168fd2977d33f13e541442dfba1acf2d7b1295d3c"`
[INFO] running `"docker" "rm" "-f" "30108388ce656ae77b67ebc168fd2977d33f13e541442dfba1acf2d7b1295d3c"`
[INFO] [stdout] 30108388ce656ae77b67ebc168fd2977d33f13e541442dfba1acf2d7b1295d3c