[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 try#a75eafceea413a1b40c0e0769db85e08ec17160b for pr-133925 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichabay05%2Fnqueens" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/michabay05/nqueens on toolchain a75eafceea413a1b40c0e0769db85e08ec17160b [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "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-2-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" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f50663b3b5f43f7d10dc000123b567f088cabb516c94bdf16f3a18cbf2f569a8 [INFO] running `Command { std: "docker" "start" "-a" "f50663b3b5f43f7d10dc000123b567f088cabb516c94bdf16f3a18cbf2f569a8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f50663b3b5f43f7d10dc000123b567f088cabb516c94bdf16f3a18cbf2f569a8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f50663b3b5f43f7d10dc000123b567f088cabb516c94bdf16f3a18cbf2f569a8", kill_on_drop: false }` [INFO] [stdout] f50663b3b5f43f7d10dc000123b567f088cabb516c94bdf16f3a18cbf2f569a8 [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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 80c9443d0c8d3b7f8d4d5201518ef9596c39f103b50cbe11f4c9b1949bca9466 [INFO] running `Command { std: "docker" "start" "-a" "80c9443d0c8d3b7f8d4d5201518ef9596c39f103b50cbe11f4c9b1949bca9466", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.139 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking getrandom v0.2.8 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [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: 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: 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: 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: `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: 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] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.73s [INFO] running `Command { std: "docker" "inspect" "80c9443d0c8d3b7f8d4d5201518ef9596c39f103b50cbe11f4c9b1949bca9466", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "80c9443d0c8d3b7f8d4d5201518ef9596c39f103b50cbe11f4c9b1949bca9466", kill_on_drop: false }` [INFO] [stdout] 80c9443d0c8d3b7f8d4d5201518ef9596c39f103b50cbe11f4c9b1949bca9466