[INFO] cloning repository https://github.com/NewlineCoding/lab_8 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NewlineCoding/lab_8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNewlineCoding%2Flab_8", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNewlineCoding%2Flab_8'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c35ebd348c70b028f74012a205d94718acf3132e [INFO] checking NewlineCoding/lab_8 against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNewlineCoding%2Flab_8" "/workspace/builds/worker-12/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/NewlineCoding/lab_8 on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/NewlineCoding/lab_8 [INFO] finished tweaking git repo https://github.com/NewlineCoding/lab_8 [INFO] tweaked toml for git repo https://github.com/NewlineCoding/lab_8 written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/NewlineCoding/lab_8 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded num_cpus v1.4.0 [INFO] [stderr] Downloaded libc v0.2.22 [INFO] [stderr] Downloaded mersenne_twister v1.1.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 364477e4d74d2ffbbc95b59ead50d3a600bd4f2136f7e162b6dcfc6cc9f1fd1a [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "364477e4d74d2ffbbc95b59ead50d3a600bd4f2136f7e162b6dcfc6cc9f1fd1a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "364477e4d74d2ffbbc95b59ead50d3a600bd4f2136f7e162b6dcfc6cc9f1fd1a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "364477e4d74d2ffbbc95b59ead50d3a600bd4f2136f7e162b6dcfc6cc9f1fd1a", kill_on_drop: false }` [INFO] [stdout] 364477e4d74d2ffbbc95b59ead50d3a600bd4f2136f7e162b6dcfc6cc9f1fd1a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 633130f1cd05e62619642540d745265b2fdcf891d2d0d1f88f327fcb8e748e83 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "633130f1cd05e62619642540d745265b2fdcf891d2d0d1f88f327fcb8e748e83", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.22 [INFO] [stderr] Checking threadpool v1.3.2 [INFO] [stderr] Checking rand v0.3.15 [INFO] [stderr] Checking num_cpus v1.4.0 [INFO] [stderr] Checking mersenne_twister v1.1.0 [INFO] [stderr] Checking lab_8 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `IndependentSample`, `Range` [INFO] [stdout] --> src/main.rs:6:27 [INFO] [stdout] | [INFO] [stdout] 6 | use rand::distributions::{IndependentSample, Range}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashSet` [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use std::collections::HashSet; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `mersenne_twister::MersenneTwister` [INFO] [stdout] --> src/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use mersenne_twister::MersenneTwister; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Rng`, `SeedableRng` [INFO] [stdout] --> src/main.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | use rand::{Rng, SeedableRng}; [INFO] [stdout] | ^^^ ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Duration` [INFO] [stdout] --> src/main.rs:12:17 [INFO] [stdout] | [INFO] [stdout] 12 | use std::time::{Duration, Instant}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `tests_per_core` is never read [INFO] [stdout] --> src/main.rs:85:9 [INFO] [stdout] | [INFO] [stdout] 85 | tests_per_core = n - 2 [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_cpu` [INFO] [stdout] --> src/main.rs:113:9 [INFO] [stdout] | [INFO] [stdout] 113 | let num_cpu = num_cpus::get(); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_cpu` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `tests_per_core` is never read [INFO] [stdout] --> src/main.rs:116:9 [INFO] [stdout] | [INFO] [stdout] 116 | tests_per_core = n - 2 [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:17:19 [INFO] [stdout] | [INFO] [stdout] 17 | fn is_prime_naive(mut n: u64) -> bool { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `IndependentSample`, `Range` [INFO] [stdout] --> src/main.rs:6:27 [INFO] [stdout] | [INFO] [stdout] 6 | use rand::distributions::{IndependentSample, Range}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashSet` [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use std::collections::HashSet; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `mersenne_twister::MersenneTwister` [INFO] [stdout] --> src/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use mersenne_twister::MersenneTwister; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Rng`, `SeedableRng` [INFO] [stdout] --> src/main.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | use rand::{Rng, SeedableRng}; [INFO] [stdout] | ^^^ ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:31:28 [INFO] [stdout] | [INFO] [stdout] 31 | fn modular_exp(mut a: u64, mut b: u64, mut c: u64) -> u64 { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Duration` [INFO] [stdout] --> src/main.rs:12:17 [INFO] [stdout] | [INFO] [stdout] 12 | use std::time::{Duration, Instant}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:31:40 [INFO] [stdout] | [INFO] [stdout] 31 | fn modular_exp(mut a: u64, mut b: u64, mut c: u64) -> u64 { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:52:14 [INFO] [stdout] | [INFO] [stdout] 52 | fn tu_finder(mut n: u64) -> (u64, u64) { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:79:27 [INFO] [stdout] | [INFO] [stdout] 79 | fn is_prime_mr_multi_core(mut n: u64, mut tests_per_core: u64) -> bool { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:82:9 [INFO] [stdout] | [INFO] [stdout] 82 | let mut workers = ThreadPool::new_with_name("worker".into(), num_cpu); [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:91:9 [INFO] [stdout] | [INFO] [stdout] 91 | let mut t: u64 = tu_tuple.0; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:92:9 [INFO] [stdout] | [INFO] [stdout] 92 | let mut u: u64 = tu_tuple.1; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:112:28 [INFO] [stdout] | [INFO] [stdout] 112 | fn is_prime_mr_single_core(mut n: u64, mut tests_per_core: u64) -> bool { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:122:9 [INFO] [stdout] | [INFO] [stdout] 122 | let mut t: u64 = tu_tuple.0; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:123:9 [INFO] [stdout] | [INFO] [stdout] 123 | let mut u: u64 = tu_tuple.1; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `is_prime_naive` [INFO] [stdout] --> src/main.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn is_prime_naive(mut n: u64) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `tests_per_core` is never read [INFO] [stdout] --> src/main.rs:85:9 [INFO] [stdout] | [INFO] [stdout] 85 | tests_per_core = n - 2 [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_cpu` [INFO] [stdout] --> src/main.rs:113:9 [INFO] [stdout] | [INFO] [stdout] 113 | let num_cpu = num_cpus::get(); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_cpu` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `tests_per_core` is never read [INFO] [stdout] --> src/main.rs:116:9 [INFO] [stdout] | [INFO] [stdout] 116 | tests_per_core = n - 2 [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:17:19 [INFO] [stdout] | [INFO] [stdout] 17 | fn is_prime_naive(mut n: u64) -> bool { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:31:28 [INFO] [stdout] | [INFO] [stdout] 31 | fn modular_exp(mut a: u64, mut b: u64, mut c: u64) -> u64 { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:31:40 [INFO] [stdout] | [INFO] [stdout] 31 | fn modular_exp(mut a: u64, mut b: u64, mut c: u64) -> u64 { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:52:14 [INFO] [stdout] | [INFO] [stdout] 52 | fn tu_finder(mut n: u64) -> (u64, u64) { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:79:27 [INFO] [stdout] | [INFO] [stdout] 79 | fn is_prime_mr_multi_core(mut n: u64, mut tests_per_core: u64) -> bool { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:82:9 [INFO] [stdout] | [INFO] [stdout] 82 | let mut workers = ThreadPool::new_with_name("worker".into(), num_cpu); [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:91:9 [INFO] [stdout] | [INFO] [stdout] 91 | let mut t: u64 = tu_tuple.0; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:92:9 [INFO] [stdout] | [INFO] [stdout] 92 | let mut u: u64 = tu_tuple.1; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:112:28 [INFO] [stdout] | [INFO] [stdout] 112 | fn is_prime_mr_single_core(mut n: u64, mut tests_per_core: u64) -> bool { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:122:9 [INFO] [stdout] | [INFO] [stdout] 122 | let mut t: u64 = tu_tuple.0; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:123:9 [INFO] [stdout] | [INFO] [stdout] 123 | let mut u: u64 = tu_tuple.1; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `is_prime_naive` [INFO] [stdout] --> src/main.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn is_prime_naive(mut n: u64) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 20 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 20 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.83s [INFO] running `Command { std: "docker" "inspect" "633130f1cd05e62619642540d745265b2fdcf891d2d0d1f88f327fcb8e748e83", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "633130f1cd05e62619642540d745265b2fdcf891d2d0d1f88f327fcb8e748e83", kill_on_drop: false }` [INFO] [stdout] 633130f1cd05e62619642540d745265b2fdcf891d2d0d1f88f327fcb8e748e83