[INFO] cloning repository https://github.com/rHermes/rusty-euler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rHermes/rusty-euler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrHermes%2Frusty-euler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrHermes%2Frusty-euler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 07d79658f70957edf02e6eab34749dbee2d46469
[INFO] checking rHermes/rusty-euler against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrHermes%2Frusty-euler" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rHermes/rusty-euler on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rHermes/rusty-euler
[INFO] finished tweaking git repo https://github.com/rHermes/rusty-euler
[INFO] tweaked toml for git repo https://github.com/rHermes/rusty-euler written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/rHermes/rusty-euler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bff4f445a924c6c1d48782807f1ba5aa22e3e8421b46689f0efd20abd684832e
[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" "bff4f445a924c6c1d48782807f1ba5aa22e3e8421b46689f0efd20abd684832e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bff4f445a924c6c1d48782807f1ba5aa22e3e8421b46689f0efd20abd684832e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bff4f445a924c6c1d48782807f1ba5aa22e3e8421b46689f0efd20abd684832e", kill_on_drop: false }`
[INFO] [stdout] bff4f445a924c6c1d48782807f1ba5aa22e3e8421b46689f0efd20abd684832e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a27c97d6a3eecb03f45ecbf7db0c9d6206fade3df0361d9c7bd58a680d62fca
[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" "5a27c97d6a3eecb03f45ecbf7db0c9d6206fade3df0361d9c7bd58a680d62fca", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num-bigint v0.1.40
[INFO] [stderr]     Checking num-complex v0.1.40
[INFO] [stderr]     Checking num-rational v0.1.40
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `primes_below`
[INFO] [stdout]  --> src/primes.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn primes_below(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: `is_prime`
[INFO] [stdout]   --> src/primes.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn is_prime(n: u64, primes: &[u64]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `nth_prime`
[INFO] [stdout]   --> src/primes.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn nth_prime(n: usize) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `primes_below`
[INFO] [stdout]  --> src/primes.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn primes_below(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: `is_prime`
[INFO] [stdout]   --> src/primes.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn is_prime(n: u64, primes: &[u64]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `nth_prime`
[INFO] [stdout]   --> src/primes.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn nth_prime(n: usize) -> 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 9.94s
[INFO] running `Command { std: "docker" "inspect" "5a27c97d6a3eecb03f45ecbf7db0c9d6206fade3df0361d9c7bd58a680d62fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a27c97d6a3eecb03f45ecbf7db0c9d6206fade3df0361d9c7bd58a680d62fca", kill_on_drop: false }`
[INFO] [stdout] 5a27c97d6a3eecb03f45ecbf7db0c9d6206fade3df0361d9c7bd58a680d62fca