[INFO] cloning repository https://github.com/arthrp/project_euler_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arthrp/project_euler_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farthrp%2Fproject_euler_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farthrp%2Fproject_euler_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1596aff91e3e0eb21f53d78d9c2cdfe6a937ae8d
[INFO] testing arthrp/project_euler_rust against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farthrp%2Fproject_euler_rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arthrp/project_euler_rust on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arthrp/project_euler_rust
[INFO] finished tweaking git repo https://github.com/arthrp/project_euler_rust
[INFO] tweaked toml for git repo https://github.com/arthrp/project_euler_rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/arthrp/project_euler_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc2a6070f9772d36e22c26e1ef53d386555f7cbaf6e0f7f5c31b812785ada5a2
[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" "cc2a6070f9772d36e22c26e1ef53d386555f7cbaf6e0f7f5c31b812785ada5a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc2a6070f9772d36e22c26e1ef53d386555f7cbaf6e0f7f5c31b812785ada5a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc2a6070f9772d36e22c26e1ef53d386555f7cbaf6e0f7f5c31b812785ada5a2", kill_on_drop: false }`
[INFO] [stdout] cc2a6070f9772d36e22c26e1ef53d386555f7cbaf6e0f7f5c31b812785ada5a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db123ac0d28fa2ab02b09af1ea64668a2bce07bd5a8bf24cb3ae2541698e89d1
[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" "db123ac0d28fa2ab02b09af1ea64668a2bce07bd5a8bf24cb3ae2541698e89d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling project-euler-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `solve_simple`
[INFO] [stdout]   --> src/euler_three.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn solve_simple(num: i64) -> i64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "db123ac0d28fa2ab02b09af1ea64668a2bce07bd5a8bf24cb3ae2541698e89d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db123ac0d28fa2ab02b09af1ea64668a2bce07bd5a8bf24cb3ae2541698e89d1", kill_on_drop: false }`
[INFO] [stdout] db123ac0d28fa2ab02b09af1ea64668a2bce07bd5a8bf24cb3ae2541698e89d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 69491684b4b104a6ed4e733f8507c7453a96dad70348ecb12475acdeeefadc56
[INFO] running `Command { std: "docker" "start" "-a" "69491684b4b104a6ed4e733f8507c7453a96dad70348ecb12475acdeeefadc56", kill_on_drop: false }`
[INFO] [stderr]    Compiling project-euler-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `solve_simple`
[INFO] [stdout]   --> src/euler_three.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn solve_simple(num: i64) -> i64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_simple`
[INFO] [stdout]   --> src/euler_three.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn solve_simple(num: i64) -> i64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `Command { std: "docker" "inspect" "69491684b4b104a6ed4e733f8507c7453a96dad70348ecb12475acdeeefadc56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69491684b4b104a6ed4e733f8507c7453a96dad70348ecb12475acdeeefadc56", kill_on_drop: false }`
[INFO] [stdout] 69491684b4b104a6ed4e733f8507c7453a96dad70348ecb12475acdeeefadc56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 99ffeaffb90e47101c969896a0bd79982c3bf192e669794538ad48fee9583419
[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" "99ffeaffb90e47101c969896a0bd79982c3bf192e669794538ad48fee9583419", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `solve_simple`
[INFO] [stderr]   --> src/euler_three.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn solve_simple(num: i64) -> i64 {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve_simple`
[INFO] [stderr]   --> src/euler_three.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn solve_simple(num: i64) -> i64 {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/project_euler_rust-56c70ae19cafc9f2
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/euler_one_tests-0f0b26cfe4e33ec5
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/euler_three_tests-49119f9e41b6b6a1
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test euler_one_solved_correctly ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test euler_three_simple_solved_correctly ... ignored
[INFO] [stdout] test is_prime_works ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/euler_two_tests-735097adcfb9fbb2
[INFO] [stdout] test euler_three_solved_correctly ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test euler_two_recursive_solved_correctly ... ok
[INFO] [stdout] test euler_two_solved_correctly ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "99ffeaffb90e47101c969896a0bd79982c3bf192e669794538ad48fee9583419", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99ffeaffb90e47101c969896a0bd79982c3bf192e669794538ad48fee9583419", kill_on_drop: false }`
[INFO] [stdout] 99ffeaffb90e47101c969896a0bd79982c3bf192e669794538ad48fee9583419