[INFO] cloning repository https://github.com/michabay05/nqueens [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/michabay05/nqueens" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichabay05%2Fnqueens", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichabay05%2Fnqueens'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a0d970704503fc129a76f91189a13e6c3a47e31f [INFO] checking michabay05/nqueens against master#d97bb195bf7b84815622b235cb51171c1b8f7e51 for pr-117905 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichabay05%2Fnqueens" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/michabay05/nqueens on toolchain d97bb195bf7b84815622b235cb51171c1b8f7e51 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d97bb195bf7b84815622b235cb51171c1b8f7e51" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/michabay05/nqueens [INFO] finished tweaking git repo https://github.com/michabay05/nqueens [INFO] tweaked toml for git repo https://github.com/michabay05/nqueens written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/michabay05/nqueens 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" "+d97bb195bf7b84815622b235cb51171c1b8f7e51" "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 michabay05/nqueens against try#1930f260edd7e614aa013a0665aa5cfd0ada0501 for pr-117905 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichabay05%2Fnqueens" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/michabay05/nqueens on toolchain 1930f260edd7e614aa013a0665aa5cfd0ada0501 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/michabay05/nqueens [INFO] finished tweaking git repo https://github.com/michabay05/nqueens [INFO] tweaked toml for git repo https://github.com/michabay05/nqueens written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/michabay05/nqueens 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" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "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 michabay05/nqueens against try#1930f260edd7e614aa013a0665aa5cfd0ada0501 for pr-117905 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichabay05%2Fnqueens" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/michabay05/nqueens on toolchain 1930f260edd7e614aa013a0665aa5cfd0ada0501 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/michabay05/nqueens [INFO] finished tweaking git repo https://github.com/michabay05/nqueens [INFO] tweaked toml for git repo https://github.com/michabay05/nqueens written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/michabay05/nqueens 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" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a562684af7857d248696bb726ee5c42f3b5759289fa01ee1674ad2cbf3162ef9 [INFO] running `Command { std: "docker" "start" "-a" "a562684af7857d248696bb726ee5c42f3b5759289fa01ee1674ad2cbf3162ef9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a562684af7857d248696bb726ee5c42f3b5759289fa01ee1674ad2cbf3162ef9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a562684af7857d248696bb726ee5c42f3b5759289fa01ee1674ad2cbf3162ef9", kill_on_drop: false }` [INFO] [stdout] a562684af7857d248696bb726ee5c42f3b5759289fa01ee1674ad2cbf3162ef9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0dde5107288c2c8b304c37a55f536bfdf5481377707534c3e19dbc78aa2f9cc4 [INFO] running `Command { std: "docker" "start" "-a" "0dde5107288c2c8b304c37a55f536bfdf5481377707534c3e19dbc78aa2f9cc4", kill_on_drop: false }` [INFO] [stderr] Checking nqueens v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `r` is never read [INFO] [stdout] --> src/attack.rs:44:13 [INFO] [stdout] | [INFO] [stdout] 44 | let mut r: i8 = start_row; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `c` is never read [INFO] [stdout] --> src/attack.rs:45:13 [INFO] [stdout] | [INFO] [stdout] 45 | let mut c: i8 = start_col; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `r` is never read [INFO] [stdout] --> src/attack.rs:101:13 [INFO] [stdout] | [INFO] [stdout] 101 | let mut r: i8 = start_row; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `c` is never read [INFO] [stdout] --> src/attack.rs:102:13 [INFO] [stdout] | [INFO] [stdout] 102 | let mut c: i8 = start_col; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `r` is never read [INFO] [stdout] --> src/attack.rs:44:13 [INFO] [stdout] | [INFO] [stdout] 44 | let mut r: i8 = start_row; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `c` is never read [INFO] [stdout] --> src/attack.rs:45:13 [INFO] [stdout] | [INFO] [stdout] 45 | let mut c: i8 = start_col; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `r` is never read [INFO] [stdout] --> src/attack.rs:101:13 [INFO] [stdout] | [INFO] [stdout] 101 | let mut r: i8 = start_row; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `c` is never read [INFO] [stdout] --> src/attack.rs:102:13 [INFO] [stdout] | [INFO] [stdout] 102 | let mut c: i8 = start_col; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/population.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | for i in 0..POPULATION_COUNT { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/population.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | for i in 0..POPULATION_COUNT { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `el` [INFO] [stdout] --> src/population.rs:198:17 [INFO] [stdout] | [INFO] [stdout] 198 | for (i, el) in self.elements.iter().enumerate() { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_el` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `el` [INFO] [stdout] --> src/population.rs:198:17 [INFO] [stdout] | [INFO] [stdout] 198 | for (i, el) in self.elements.iter().enumerate() { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_el` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `randomized_new` and `print_genes` are never used [INFO] [stdout] --> src/dna.rs:25:12 [INFO] [stdout] | [INFO] [stdout] 14 | impl DNA { [INFO] [stdout] | -------- associated items in this implementation [INFO] [stdout] ... [INFO] [stdout] 25 | pub fn randomized_new() -> Self { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 70 | pub fn print_genes(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `randomized_new` and `print_genes` are never used [INFO] [stdout] --> src/dna.rs:25:12 [INFO] [stdout] | [INFO] [stdout] 14 | impl DNA { [INFO] [stdout] | -------- associated items in this implementation [INFO] [stdout] ... [INFO] [stdout] 25 | pub fn randomized_new() -> Self { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 70 | pub fn print_genes(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `mutate_rate` is never read [INFO] [stdout] --> src/population.rs:15:5 [INFO] [stdout] | [INFO] [stdout] 9 | pub struct Population { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 15 | mutate_rate: f32, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `print_mating_pool`, `print_mating_pool_count`, `print_elements`, and `print_fitness` are never used [INFO] [stdout] --> src/population.rs:191:12 [INFO] [stdout] | [INFO] [stdout] 31 | impl Population { [INFO] [stdout] | --------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 191 | pub fn print_mating_pool(&self) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 196 | pub fn print_mating_pool_count(&self) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 208 | pub fn print_elements(&self) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 214 | pub fn print_fitness(&self) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `mutate_rate` is never read [INFO] [stdout] --> src/population.rs:15:5 [INFO] [stdout] | [INFO] [stdout] 9 | pub struct Population { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 15 | mutate_rate: f32, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `print_mating_pool`, `print_mating_pool_count`, `print_elements`, and `print_fitness` are never used [INFO] [stdout] --> src/population.rs:191:12 [INFO] [stdout] | [INFO] [stdout] 31 | impl Population { [INFO] [stdout] | --------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 191 | pub fn print_mating_pool(&self) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 196 | pub fn print_mating_pool_count(&self) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 208 | pub fn print_elements(&self) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 214 | pub fn print_fitness(&self) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.12s [INFO] running `Command { std: "docker" "inspect" "0dde5107288c2c8b304c37a55f536bfdf5481377707534c3e19dbc78aa2f9cc4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0dde5107288c2c8b304c37a55f536bfdf5481377707534c3e19dbc78aa2f9cc4", kill_on_drop: false }` [INFO] [stdout] 0dde5107288c2c8b304c37a55f536bfdf5481377707534c3e19dbc78aa2f9cc4