[INFO] cloning repository https://github.com/Piping/sudoku-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Piping/sudoku-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPiping%2Fsudoku-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPiping%2Fsudoku-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee775c2a0d9726b49b5cc7ec54c19133e8652c6b
[INFO] checking Piping/sudoku-rs against try#2278ef25f90817c20d6dd0d2da58a990eb6f53cb for pr-145108-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPiping%2Fsudoku-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Piping/sudoku-rs
[INFO] finished tweaking git repo https://github.com/Piping/sudoku-rs
[INFO] tweaked toml for git repo https://github.com/Piping/sudoku-rs written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Piping/sudoku-rs on toolchain 2278ef25f90817c20d6dd0d2da58a990eb6f53cb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2278ef25f90817c20d6dd0d2da58a990eb6f53cb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Piping/sudoku-rs 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" "+2278ef25f90817c20d6dd0d2da58a990eb6f53cb" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking Piping/sudoku-rs against try#2278ef25f90817c20d6dd0d2da58a990eb6f53cb for pr-145108-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPiping%2Fsudoku-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Piping/sudoku-rs
[INFO] finished tweaking git repo https://github.com/Piping/sudoku-rs
[INFO] tweaked toml for git repo https://github.com/Piping/sudoku-rs written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Piping/sudoku-rs on toolchain 2278ef25f90817c20d6dd0d2da58a990eb6f53cb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2278ef25f90817c20d6dd0d2da58a990eb6f53cb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Piping/sudoku-rs 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" "+2278ef25f90817c20d6dd0d2da58a990eb6f53cb" "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 syn v1.0.70
[INFO] [stderr]   Downloaded regex v1.4.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2278ef25f90817c20d6dd0d2da58a990eb6f53cb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91e2f26498c23b0f390083582d84bc57a3920c42be2fd86c8ebdc9ddfa5e82b8
[INFO] running `Command { std: "docker" "start" "-a" "91e2f26498c23b0f390083582d84bc57a3920c42be2fd86c8ebdc9ddfa5e82b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91e2f26498c23b0f390083582d84bc57a3920c42be2fd86c8ebdc9ddfa5e82b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91e2f26498c23b0f390083582d84bc57a3920c42be2fd86c8ebdc9ddfa5e82b8", kill_on_drop: false }`
[INFO] [stdout] 91e2f26498c23b0f390083582d84bc57a3920c42be2fd86c8ebdc9ddfa5e82b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2278ef25f90817c20d6dd0d2da58a990eb6f53cb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61dc05ba8f1e67eb7e0369d175a2773b168f2443b240ebd656c226202dbf64fd
[INFO] running `Command { std: "docker" "start" "-a" "61dc05ba8f1e67eb7e0369d175a2773b168f2443b240ebd656c226202dbf64fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]     Checking sudoku-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stdout] warning: function `options_for_with_hashset` is never used
[INFO] [stdout]    --> src/lib.rs:147:4
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn options_for_with_hashset(game: &mut Sudoku, row: u8, col: u8) -> Vec<u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod lib;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `options_for_with_hashset` is never used
[INFO] [stdout]    --> src/lib.rs:147:4
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn options_for_with_hashset(game: &mut Sudoku, row: u8, col: u8) -> Vec<u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking criterion v0.3.4
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod lib;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `options_for_with_hashset` is never used
[INFO] [stdout]    --> src/lib.rs:147:4
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn options_for_with_hashset(game: &mut Sudoku, row: u8, col: u8) -> Vec<u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `options_for_with_hashset` is never used
[INFO] [stdout]    --> src/lib.rs:147:4
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn options_for_with_hashset(game: &mut Sudoku, row: u8, col: u8) -> Vec<u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[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 7.62s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "61dc05ba8f1e67eb7e0369d175a2773b168f2443b240ebd656c226202dbf64fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61dc05ba8f1e67eb7e0369d175a2773b168f2443b240ebd656c226202dbf64fd", kill_on_drop: false }`
[INFO] [stdout] 61dc05ba8f1e67eb7e0369d175a2773b168f2443b240ebd656c226202dbf64fd