[INFO] updating cached repository https://github.com/mipli/sudoku
[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] a144789abaf6892de794de7466c0e90b2183f8d0
[INFO] testing mipli/sudoku against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmipli%2Fsudoku" "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/mipli/sudoku on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mipli/sudoku
[INFO] finished tweaking git repo https://github.com/mipli/sudoku
[INFO] tweaked toml for git repo https://github.com/mipli/sudoku written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mipli/sudoku already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 5073f67d3e534f58aa264c1368c842cf7d76992221b63daea20307bfb1aebe5d
[INFO] running `"docker" "start" "-a" "5073f67d3e534f58aa264c1368c842cf7d76992221b63daea20307bfb1aebe5d"`
[INFO] [stderr]    Compiling getopts v0.2.17
[INFO] [stderr]    Compiling sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]   --> src/lib.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | #![feature(test)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/cell.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  | / bitflags! {
[INFO] [stderr] 4  | |     pub struct Value: u32 {
[INFO] [stderr] 5  | |         const ONE = 0b0_0000_0001;
[INFO] [stderr] 6  | |         const TWO = 0b0_0000_0010;
[INFO] [stderr] ...  |
[INFO] [stderr] 14 | |     }
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/cell.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  | / bitflags! {
[INFO] [stderr] 4  | |     pub struct Value: u32 {
[INFO] [stderr] 5  | |         const ONE = 0b0_0000_0001;
[INFO] [stderr] 6  | |         const TWO = 0b0_0000_0010;
[INFO] [stderr] ...  |
[INFO] [stderr] 14 | |     }
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/cell.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  | / bitflags! {
[INFO] [stderr] 4  | |     pub struct Value: u32 {
[INFO] [stderr] 5  | |         const ONE = 0b0_0000_0001;
[INFO] [stderr] 6  | |         const TWO = 0b0_0000_0010;
[INFO] [stderr] ...  |
[INFO] [stderr] 14 | |     }
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `sudoku`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5073f67d3e534f58aa264c1368c842cf7d76992221b63daea20307bfb1aebe5d"`
[INFO] running `"docker" "rm" "-f" "5073f67d3e534f58aa264c1368c842cf7d76992221b63daea20307bfb1aebe5d"`
[INFO] [stdout] 5073f67d3e534f58aa264c1368c842cf7d76992221b63daea20307bfb1aebe5d