[INFO] updating cached repository https://github.com/binarybana/sudok
[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] f6fa2f047974a83bf7c71b7f6b7f5e986ce2fc7a
[INFO] checking binarybana/sudok against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbinarybana%2Fsudok" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/binarybana/sudok on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/binarybana/sudok
[INFO] finished tweaking git repo https://github.com/binarybana/sudok
[INFO] tweaked toml for git repo https://github.com/binarybana/sudok written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/binarybana/sudok already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1cd5fe631d118bdee676ce6c74bf5f33ed92ef6a10b55cb20f2fb47c48ba0219
[INFO] running `"docker" "start" "-a" "1cd5fe631d118bdee676ce6c74bf5f33ed92ef6a10b55cb20f2fb47c48ba0219"`
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking either v1.4.0
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking num_cpus v1.7.0
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking regex v0.2.3
[INFO] [stderr]     Checking rayon v0.9.0
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking sudok v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | / lazy_static! {
[INFO] [stderr] 17 | |     static ref NEIGHBORS: Vec<Vec<usize>> = {
[INFO] [stderr] 18 | |         let mut v = Vec::with_capacity(81);
[INFO] [stderr] 19 | |         for i in 0..81 {
[INFO] [stderr] ...  |
[INFO] [stderr] 50 | |     };
[INFO] [stderr] 51 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z 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/main.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | / lazy_static! {
[INFO] [stderr] 17 | |     static ref NEIGHBORS: Vec<Vec<usize>> = {
[INFO] [stderr] 18 | |         let mut v = Vec::with_capacity(81);
[INFO] [stderr] 19 | |         for i in 0..81 {
[INFO] [stderr] ...  |
[INFO] [stderr] 50 | |     };
[INFO] [stderr] 51 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `singleton`
[INFO] [stderr]  --> src/bitcube.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn singleton(val: usize) -> Cell {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]   --> src/bitcube.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn set(&mut self, index: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.56s
[INFO] running `"docker" "inspect" "1cd5fe631d118bdee676ce6c74bf5f33ed92ef6a10b55cb20f2fb47c48ba0219"`
[INFO] running `"docker" "rm" "-f" "1cd5fe631d118bdee676ce6c74bf5f33ed92ef6a10b55cb20f2fb47c48ba0219"`
[INFO] [stdout] 1cd5fe631d118bdee676ce6c74bf5f33ed92ef6a10b55cb20f2fb47c48ba0219