[INFO] cloning repository https://github.com/ianprime0509/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/ianprime0509/euler-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianprime0509%2Feuler-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianprime0509%2Feuler-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30a6ea3e2e929ea2ed054e12283e13a8d878fbf0
[INFO] checking ianprime0509/euler-rs against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianprime0509%2Feuler-rs" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ianprime0509/euler-rs on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ianprime0509/euler-rs
[INFO] finished tweaking git repo https://github.com/ianprime0509/euler-rs
[INFO] tweaked toml for git repo https://github.com/ianprime0509/euler-rs written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/ianprime0509/euler-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", 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] 03a935fbfb442a63fcfa18ab20aa4602c826cc27058a72970780a5ce4c972da5
[INFO] running `Command { std: "docker" "start" "-a" "03a935fbfb442a63fcfa18ab20aa4602c826cc27058a72970780a5ce4c972da5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03a935fbfb442a63fcfa18ab20aa4602c826cc27058a72970780a5ce4c972da5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03a935fbfb442a63fcfa18ab20aa4602c826cc27058a72970780a5ce4c972da5", kill_on_drop: false }`
[INFO] [stdout] 03a935fbfb442a63fcfa18ab20aa4602c826cc27058a72970780a5ce4c972da5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--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] 531d49e216bd380432227bfd3d03e3318fd2e5cb45abe2b91412bbcf73a8094e
[INFO] running `Command { std: "docker" "start" "-a" "531d49e216bd380432227bfd3d03e3318fd2e5cb45abe2b91412bbcf73a8094e", 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] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking rustc-serialize v0.3.20
[INFO] [stderr]     Checking either v1.0.2
[INFO] [stderr]     Checking bit-vec v0.4.3
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking itertools v0.5.6
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]     Checking num-bigint v0.1.35
[INFO] [stderr]     Checking num-complex v0.1.35
[INFO] [stderr]     Checking num-rational v0.1.35
[INFO] [stderr]     Checking num v0.1.36
[INFO] [stderr]     Checking euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `answer`
[INFO] [stdout]   --> src/solutions/mod.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn answer(&self) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lcm`
[INFO] [stdout]   --> src/math/numeric.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn lcm<T: Integer + Clone>(n: &T, m: &T) -> T {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lcm`
[INFO] [stdout]   --> src/math/numeric.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn lcm<T: Integer + Clone>(n: &T, m: &T) -> T {
[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 19.18s
[INFO] running `Command { std: "docker" "inspect" "531d49e216bd380432227bfd3d03e3318fd2e5cb45abe2b91412bbcf73a8094e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "531d49e216bd380432227bfd3d03e3318fd2e5cb45abe2b91412bbcf73a8094e", kill_on_drop: false }`
[INFO] [stdout] 531d49e216bd380432227bfd3d03e3318fd2e5cb45abe2b91412bbcf73a8094e