[INFO] updating cached repository https://github.com/Flecheck/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] b4d750cdaf93f8ab6a4f354cec2008b75ebcf1b5 [INFO] testing Flecheck/Sudoku against beta-2019-09-28 for beta-1.39-1 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FFlecheck%2FSudoku" "work/builds/worker-10/source"` [INFO] [stderr] Cloning into 'work/builds/worker-10/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Flecheck/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/Flecheck/Sudoku [INFO] finished tweaking git repo https://github.com/Flecheck/Sudoku [INFO] tweaked toml for git repo https://github.com/Flecheck/Sudoku written to work/builds/worker-10/source/Cargo.toml [INFO] crate git repo https://github.com/Flecheck/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-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/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] 3bec0fe05454e917d567cb8844f4a4e4a206d9cec38fd4fa0da3fcefa9489bd2 [INFO] running `"docker" "start" "-a" "3bec0fe05454e917d567cb8844f4a4e4a206d9cec38fd4fa0da3fcefa9489bd2"` [INFO] [stderr] Compiling indexmap v0.4.1 [INFO] [stderr] Compiling priority-queue v0.5.1 [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/main.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(const_fn, nll)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::time::Duration` [INFO] [stderr] --> src/main.rs:16:5 [INFO] [stderr] | [INFO] [stderr] 16 | use std::time::Duration; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::time::Instant` [INFO] [stderr] --> src/main.rs:17:5 [INFO] [stderr] | [INFO] [stderr] 17 | use std::time::Instant; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead [INFO] [stderr] --> src/solver.rs:239:62 [INFO] [stderr] | [INFO] [stderr] 239 | let mut constraints: [[Vec<(usize, usize)>; 9]; 9] = mem::uninitialized(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead [INFO] [stderr] --> src/solver.rs:241:51 [INFO] [stderr] | [INFO] [stderr] 241 | let mut l: [Vec<(usize, usize)>; 9] = mem::uninitialized(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/solver.rs:216:1 [INFO] [stderr] | [INFO] [stderr] 216 | / lazy_static! { [INFO] [stderr] 217 | | static ref PARTS: Vec> = parts(); [INFO] [stderr] 218 | | } [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 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/solver.rs:233:1 [INFO] [stderr] | [INFO] [stderr] 233 | / lazy_static! { [INFO] [stderr] 234 | | static ref CONSTRAINTS: [[Vec<(usize, usize)>; 9]; 9] = constraints(); [INFO] [stderr] 235 | | } [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 'std::mem::uninitialized': use `mem::MaybeUninit` instead [INFO] [stderr] --> src/solver.rs:30:51 [INFO] [stderr] | [INFO] [stderr] 30 | let mut constraints: [[Case; 9]; 9] = mem::uninitialized(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead [INFO] [stderr] --> src/solver.rs:32:40 [INFO] [stderr] | [INFO] [stderr] 32 | let mut l: [Case; 9] = mem::uninitialized(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [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" "3bec0fe05454e917d567cb8844f4a4e4a206d9cec38fd4fa0da3fcefa9489bd2"` [INFO] running `"docker" "rm" "-f" "3bec0fe05454e917d567cb8844f4a4e4a206d9cec38fd4fa0da3fcefa9489bd2"` [INFO] [stdout] 3bec0fe05454e917d567cb8844f4a4e4a206d9cec38fd4fa0da3fcefa9489bd2