[INFO] cloning repository https://github.com/spbots/euler-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/spbots/euler-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspbots%2Feuler-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspbots%2Feuler-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9a0896613dacec4a508471d4e8e6cae82c04da66
[INFO] testing spbots/euler-rs against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspbots%2Feuler-rs" "/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/spbots/euler-rs on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/spbots/euler-rs
[INFO] finished tweaking git repo https://github.com/spbots/euler-rs
[INFO] tweaked toml for git repo https://github.com/spbots/euler-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/spbots/euler-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b44d33033bc691963a4ed02cc56ec201b34526edb3b16b323c1f842ec44a93fc
[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" "b44d33033bc691963a4ed02cc56ec201b34526edb3b16b323c1f842ec44a93fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b44d33033bc691963a4ed02cc56ec201b34526edb3b16b323c1f842ec44a93fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b44d33033bc691963a4ed02cc56ec201b34526edb3b16b323c1f842ec44a93fc", kill_on_drop: false }`
[INFO] [stdout] b44d33033bc691963a4ed02cc56ec201b34526edb3b16b323c1f842ec44a93fc
[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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 842c1bd6502bf5f4ed4e10028e9539999f01403814240e8e371d4a332e4e47e1
[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" "842c1bd6502bf5f4ed4e10028e9539999f01403814240e8e371d4a332e4e47e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `prime_factorization`
[INFO] [stdout]   --> src/euler/wheel_factorization.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn prime_factorization(n: u64) -> Vec<u64> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `divisors_for_number`
[INFO] [stdout]   --> src/euler/e012.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn divisors_for_number(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_triangle_number_with_n_divisors`
[INFO] [stdout]   --> src/euler/e012.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn first_triangle_number_with_n_divisors(n: u64) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.28s
[INFO] running `Command { std: "docker" "inspect" "842c1bd6502bf5f4ed4e10028e9539999f01403814240e8e371d4a332e4e47e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "842c1bd6502bf5f4ed4e10028e9539999f01403814240e8e371d4a332e4e47e1", kill_on_drop: false }`
[INFO] [stdout] 842c1bd6502bf5f4ed4e10028e9539999f01403814240e8e371d4a332e4e47e1
[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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a2a69c8e2966798504d91a4b9ecfedbf11b4fbb623e5d6f64279a7dac253303
[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" "3a2a69c8e2966798504d91a4b9ecfedbf11b4fbb623e5d6f64279a7dac253303", kill_on_drop: false }`
[INFO] [stderr]    Compiling euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.21s
[INFO] running `Command { std: "docker" "inspect" "3a2a69c8e2966798504d91a4b9ecfedbf11b4fbb623e5d6f64279a7dac253303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a2a69c8e2966798504d91a4b9ecfedbf11b4fbb623e5d6f64279a7dac253303", kill_on_drop: false }`
[INFO] [stdout] 3a2a69c8e2966798504d91a4b9ecfedbf11b4fbb623e5d6f64279a7dac253303
[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" "+1.49.0" "test" "--frozen", 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] 5a9c213af1cea917c6c106515fabe1622091c4df9d37f892285338f6a1b8deb9
[INFO] running `Command { std: "docker" "start" "-a" "5a9c213af1cea917c6c106515fabe1622091c4df9d37f892285338f6a1b8deb9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.78s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/euler-89ce74e54ea87c34
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test euler::e002::euler_002 ... ok
[INFO] [stdout] test euler::bit_vector::dummy_test ... ok
[INFO] [stdout] test euler::e001::euler_001 ... ok
[INFO] [stdout] test euler::e005::euler_005 ... ok
[INFO] [stdout] test euler::e006::euler_006 ... ok
[INFO] [stdout] test euler::e011::euler_011 ... ok
[INFO] [stdout] test euler::e012::euler_012 ... ok
[INFO] [stdout] test euler::e008::euler_008 ... ok
[INFO] [stdout] test euler::e019::euler_019 ... ok
[INFO] [stdout] test euler::e031::euler_031 ... ok
[INFO] [stdout] test euler::wheel_factorization::test_build_wheel ... ok
[INFO] [stdout] test euler::prime_utils::primes_below_100 ... ok
[INFO] [stdout] test euler::e036::euler_036 ... ok
[INFO] [stdout] test euler::e017::euler_017 ... ok
[INFO] [stdout] test euler::e024::euler_024 ... ok
[INFO] [stdout] test euler::wheel_factorization::test_full_factorization ... ok
[INFO] [stdout] test euler::e015::euler_015 ... ok
[INFO] [stdout] test euler::e003::euler_003 ... ok
[INFO] [stdout] test euler::e009::euler_009 ... ok
[INFO] [stdout] test euler::e004::euler_004 ... ok
[INFO] [stdout] test euler::e013::euler_013 ... ok
[INFO] [stdout] test euler::wheel_factorization::test ... ok
[INFO] [stdout] test euler::e007::euler_007 ... ok
[INFO] [stdout] test euler::e035::euler_035 ... ok
[INFO] [stdout] test euler::e010::euler_010 ... ok
[INFO] [stdout] test euler::e014::euler_014 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5a9c213af1cea917c6c106515fabe1622091c4df9d37f892285338f6a1b8deb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a9c213af1cea917c6c106515fabe1622091c4df9d37f892285338f6a1b8deb9", kill_on_drop: false }`
[INFO] [stdout] 5a9c213af1cea917c6c106515fabe1622091c4df9d37f892285338f6a1b8deb9