[INFO] cloning repository https://github.com/pwvt/sudoku-project [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pwvt/sudoku-project" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwvt%2Fsudoku-project", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwvt%2Fsudoku-project'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4ff8b1b384d1881fe30d5e0ec9ffd1a6bc88fd32 [INFO] checking pwvt/sudoku-project against master#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwvt%2Fsudoku-project" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/pwvt/sudoku-project on toolchain 8424f8e8cdf07010967a57584fd647b30e930d4d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/pwvt/sudoku-project [INFO] finished tweaking git repo https://github.com/pwvt/sudoku-project [INFO] tweaked toml for git repo https://github.com/pwvt/sudoku-project written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/pwvt/sudoku-project 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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking pwvt/sudoku-project against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwvt%2Fsudoku-project" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/pwvt/sudoku-project on toolchain 047472f299946caf090d1b5608ae4bd9f0416256 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/pwvt/sudoku-project [INFO] finished tweaking git repo https://github.com/pwvt/sudoku-project [INFO] tweaked toml for git repo https://github.com/pwvt/sudoku-project written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/pwvt/sudoku-project 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "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 pwvt/sudoku-project against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwvt%2Fsudoku-project" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/pwvt/sudoku-project on toolchain 047472f299946caf090d1b5608ae4bd9f0416256 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/pwvt/sudoku-project [INFO] finished tweaking git repo https://github.com/pwvt/sudoku-project [INFO] tweaked toml for git repo https://github.com/pwvt/sudoku-project written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/pwvt/sudoku-project 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a7d875bded60d360de6ee6cc64b17abb694153b85660f57f3a95e8f546175f1f [INFO] running `Command { std: "docker" "start" "-a" "a7d875bded60d360de6ee6cc64b17abb694153b85660f57f3a95e8f546175f1f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a7d875bded60d360de6ee6cc64b17abb694153b85660f57f3a95e8f546175f1f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a7d875bded60d360de6ee6cc64b17abb694153b85660f57f3a95e8f546175f1f", kill_on_drop: false }` [INFO] [stdout] a7d875bded60d360de6ee6cc64b17abb694153b85660f57f3a95e8f546175f1f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Ddereferencing_mut_binding" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5de09876537648818b5d8b936096e8db1bcb0471176ad90d2bc13e332541cf42 [INFO] running `Command { std: "docker" "start" "-a" "5de09876537648818b5d8b936096e8db1bcb0471176ad90d2bc13e332541cf42", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Compiling crossbeam-utils v0.8.11 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Checking once_cell v1.13.0 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Compiling rayon-core v1.9.3 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking bit-vec v0.6.3 [INFO] [stderr] Checking either v1.7.0 [INFO] [stderr] Checking owning_ref v0.3.3 [INFO] [stderr] Checking bit-set v0.5.3 [INFO] [stderr] Compiling memoffset v0.6.5 [INFO] [stderr] Compiling crossbeam-epoch v0.9.10 [INFO] [stderr] Compiling rayon v1.5.3 [INFO] [stderr] Checking smallvec v0.6.14 [INFO] [stderr] Checking crossbeam-channel v0.5.6 [INFO] [stderr] Checking crossbeam-deque v0.8.2 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking parking_lot_core v0.2.14 [INFO] [stderr] Checking parking_lot v0.4.8 [INFO] [stderr] Checking chashmap v2.2.2 [INFO] [stderr] Checking sudoku v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::ops::Index` [INFO] [stdout] --> src/sudoku.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::ops::Index; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rayon::prelude::*` [INFO] [stdout] --> src/sudoku.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use rayon::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Index` [INFO] [stdout] --> src/sudoku.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::ops::Index; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rayon::prelude::*` [INFO] [stdout] --> src/sudoku.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use rayon::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `values` [INFO] [stdout] --> src/sudoku.rs:42:14 [INFO] [stdout] | [INFO] [stdout] 42 | fn eliminate(values: &CHashMap, s: &str, d: u8) -> bool { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `values` [INFO] [stdout] --> src/sudoku.rs:42:14 [INFO] [stdout] | [INFO] [stdout] 42 | fn eliminate(values: &CHashMap, s: &str, d: u8) -> bool { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/sudoku.rs:42:49 [INFO] [stdout] | [INFO] [stdout] 42 | fn eliminate(values: &CHashMap, s: &str, d: u8) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/sudoku.rs:42:58 [INFO] [stdout] | [INFO] [stdout] 42 | fn eliminate(values: &CHashMap, s: &str, d: u8) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/sudoku.rs:42:49 [INFO] [stdout] | [INFO] [stdout] 42 | fn eliminate(values: &CHashMap, s: &str, d: u8) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/sudoku.rs:42:58 [INFO] [stdout] | [INFO] [stdout] 42 | fn eliminate(values: &CHashMap, s: &str, d: u8) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `unit_list` [INFO] [stdout] --> src/sudoku.rs:91:9 [INFO] [stdout] | [INFO] [stdout] 91 | let unit_list = make_unit_list(&digits, &rows); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unit_list` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `unit_list` [INFO] [stdout] --> src/sudoku.rs:91:9 [INFO] [stdout] | [INFO] [stdout] 91 | let unit_list = make_unit_list(&digits, &rows); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unit_list` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `A` should have a snake case name [INFO] [stdout] --> src/sudoku.rs:8:10 [INFO] [stdout] | [INFO] [stdout] 8 | fn cross(A: &str, B: &str) -> Vec { [INFO] [stdout] | ^ help: convert the identifier to snake case: `a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `B` should have a snake case name [INFO] [stdout] --> src/sudoku.rs:8:19 [INFO] [stdout] | [INFO] [stdout] 8 | fn cross(A: &str, B: &str) -> Vec { [INFO] [stdout] | ^ help: convert the identifier to snake case: `b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `A` should have a snake case name [INFO] [stdout] --> src/sudoku.rs:8:10 [INFO] [stdout] | [INFO] [stdout] 8 | fn cross(A: &str, B: &str) -> Vec { [INFO] [stdout] | ^ help: convert the identifier to snake case: `a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `B` should have a snake case name [INFO] [stdout] --> src/sudoku.rs:8:19 [INFO] [stdout] | [INFO] [stdout] 8 | fn cross(A: &str, B: &str) -> Vec { [INFO] [stdout] | ^ help: convert the identifier to snake case: `b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.71s [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "5de09876537648818b5d8b936096e8db1bcb0471176ad90d2bc13e332541cf42", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5de09876537648818b5d8b936096e8db1bcb0471176ad90d2bc13e332541cf42", kill_on_drop: false }` [INFO] [stdout] 5de09876537648818b5d8b936096e8db1bcb0471176ad90d2bc13e332541cf42