[INFO] updating cached repository https://github.com/maurocordioli/rs-sudoku
[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] f51339a2bb6dd294e4d98a8e5d15697af28ec9b7
[INFO] checking maurocordioli/rs-sudoku against try#ba14a92a10441c4b839ce71e6ef5f7a48bbff18f for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaurocordioli%2Frs-sudoku" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maurocordioli/rs-sudoku on toolchain ba14a92a10441c4b839ce71e6ef5f7a48bbff18f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/maurocordioli/rs-sudoku
[INFO] finished tweaking git repo https://github.com/maurocordioli/rs-sudoku
[INFO] tweaked toml for git repo https://github.com/maurocordioli/rs-sudoku written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/maurocordioli/rs-sudoku already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c504a2edaa4026fd3a60f62ec99d7152bce7719358993f58f02504b3bc21481d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "c504a2edaa4026fd3a60f62ec99d7152bce7719358993f58f02504b3bc21481d"`
[INFO] [stderr]    Compiling bitflags v1.0.5
[INFO] [stderr]     Checking rssudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking memchr v2.2.0
[INFO] [stderr]     Checking tinytemplate v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:305:2
[INFO] [stderr]     |
[INFO] [stderr] 269 | /     loop {
[INFO] [stderr] 270 | |
[INFO] [stderr] 271 | |      for (t,v) in touched.into_iter().enumerate() {
[INFO] [stderr] 272 | |          if !v { continue;}
[INFO] [stderr] ...   |
[INFO] [stderr] 300 | |
[INFO] [stderr] 301 | |     }
[INFO] [stderr]     | |_____- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 305 |       ass
[INFO] [stderr]     |       ^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking csv v1.0.7
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:305:2
[INFO] [stderr]     |
[INFO] [stderr] 269 | /     loop {
[INFO] [stderr] 270 | |
[INFO] [stderr] 271 | |      for (t,v) in touched.into_iter().enumerate() {
[INFO] [stderr] 272 | |          if !v { continue;}
[INFO] [stderr] ...   |
[INFO] [stderr] 300 | |
[INFO] [stderr] 301 | |     }
[INFO] [stderr]     | |_____- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 305 |       ass
[INFO] [stderr]     |       ^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `criterion::black_box`
[INFO] [stderr]  --> src/my_benchmarks.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use criterion::black_box;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/my_benchmarks.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 |        b.read_from("800000000003600000070090200050007000000045700000100030001000068008500010090000400".as_bytes());
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.59s
[INFO] running `"docker" "inspect" "c504a2edaa4026fd3a60f62ec99d7152bce7719358993f58f02504b3bc21481d"`
[INFO] running `"docker" "rm" "-f" "c504a2edaa4026fd3a60f62ec99d7152bce7719358993f58f02504b3bc21481d"`
[INFO] [stdout] c504a2edaa4026fd3a60f62ec99d7152bce7719358993f58f02504b3bc21481d