[INFO] cloning repository https://github.com/maurocordioli/rs-sudoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maurocordioli/rs-sudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaurocordioli%2Frs-sudoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaurocordioli%2Frs-sudoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f51339a2bb6dd294e4d98a8e5d15697af28ec9b7
[INFO] checking maurocordioli/rs-sudoku against try#df1b9bf194c9183fb7c0604484171064069ce232 for pr-149195-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaurocordioli%2Frs-sudoku" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[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-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/maurocordioli/rs-sudoku on toolchain df1b9bf194c9183fb7c0604484171064069ce232
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/maurocordioli/rs-sudoku already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded walkdir v2.2.7
[INFO] [stderr]   Downloaded same-file v1.0.4
[INFO] [stderr]   Downloaded cfg-if v0.1.7
[INFO] [stderr]   Downloaded cast v0.2.2
[INFO] [stderr]   Downloaded rand_xoshiro v0.1.0
[INFO] [stderr]   Downloaded tinytemplate v1.0.1
[INFO] [stderr]   Downloaded redox_syscall v0.1.54
[INFO] [stderr]   Downloaded termion v1.5.2
[INFO] [stderr]   Downloaded csv-core v0.1.5
[INFO] [stderr]   Downloaded proc-macro2 v0.4.29
[INFO] [stderr]   Downloaded serde v1.0.90
[INFO] [stderr]   Downloaded criterion v0.2.11
[INFO] [stderr]   Downloaded bitflags v1.0.5
[INFO] [stderr]   Downloaded syn v0.15.33
[INFO] [stderr]   Downloaded serde_derive v1.0.90
[INFO] [stderr]   Downloaded ryu v0.2.8
[INFO] [stderr]   Downloaded criterion-plot v0.3.1
[INFO] [stderr]   Downloaded either v1.5.2
[INFO] [stderr]   Downloaded itertools v0.8.0
[INFO] [stderr]   Downloaded quote v0.6.12
[INFO] [stderr]   Downloaded rayon v1.0.3
[INFO] [stderr]   Downloaded libc v0.2.54
[INFO] [stderr]   Downloaded csv v1.0.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12af9c141b91a42b611aee71c19ecd0128c829ab2e631b21dbd4ed84862442b8
[INFO] running `Command { std: "docker" "start" "-a" "12af9c141b91a42b611aee71c19ecd0128c829ab2e631b21dbd4ed84862442b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12af9c141b91a42b611aee71c19ecd0128c829ab2e631b21dbd4ed84862442b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12af9c141b91a42b611aee71c19ecd0128c829ab2e631b21dbd4ed84862442b8", kill_on_drop: false }`
[INFO] [stdout] 12af9c141b91a42b611aee71c19ecd0128c829ab2e631b21dbd4ed84862442b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d242837d63b4e729a51f8d9554a1ec7e5dd96a119c331f4355973c7d01bc426c
[INFO] running `Command { std: "docker" "start" "-a" "d242837d63b4e729a51f8d9554a1ec7e5dd96a119c331f4355973c7d01bc426c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]    Compiling bitflags v1.0.5
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]     Checking rssudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:305:2
[INFO] [stdout]     |
[INFO] [stdout] 269 | /     loop {
[INFO] [stdout] 270 | |
[INFO] [stdout] 271 | |      for (t,v) in touched.into_iter().enumerate() {
[INFO] [stdout] 272 | |          if !v { continue;}
[INFO] [stdout] ...   |
[INFO] [stdout] 301 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 305 |       ass
[INFO] [stdout]     |       ^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `size` is never read
[INFO] [stdout]  --> src/lib.rs:8:22
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Config {  size: usize  }
[INFO] [stdout]   |            ------    ^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Config` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking csv v1.0.7
[INFO] [stderr]     Checking tinytemplate v1.0.1
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stdout] warning: unused import: `criterion::black_box`
[INFO] [stdout]  --> src/my_benchmarks.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use criterion::black_box;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/my_benchmarks.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |        b.read_from("800000000003600000070090200050007000000045700000100030001000068008500010090000400".as_bytes());
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |        let _ = b.read_from("800000000003600000070090200050007000000045700000100030001000068008500010090000400".as_bytes());
[INFO] [stdout]    |        +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:305:2
[INFO] [stdout]     |
[INFO] [stdout] 269 | /     loop {
[INFO] [stdout] 270 | |
[INFO] [stdout] 271 | |      for (t,v) in touched.into_iter().enumerate() {
[INFO] [stdout] 272 | |          if !v { continue;}
[INFO] [stdout] ...   |
[INFO] [stdout] 301 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 305 |       ass
[INFO] [stdout]     |       ^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `size` is never read
[INFO] [stdout]  --> src/lib.rs:8:22
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Config {  size: usize  }
[INFO] [stdout]   |            ------    ^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Config` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.25s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.11
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "d242837d63b4e729a51f8d9554a1ec7e5dd96a119c331f4355973c7d01bc426c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d242837d63b4e729a51f8d9554a1ec7e5dd96a119c331f4355973c7d01bc426c", kill_on_drop: false }`
[INFO] [stdout] d242837d63b4e729a51f8d9554a1ec7e5dd96a119c331f4355973c7d01bc426c
