[INFO] updating cached repository https://github.com/dominikus1993/rust-project-euler
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/dominikus1993/rust-project-euler
[INFO] [stderr]    a8f7785..8f7b946  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8f7b9463663b793447c1ea595ee35adeab46c14d
[INFO] checking dominikus1993/rust-project-euler against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdominikus1993%2Frust-project-euler" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dominikus1993/rust-project-euler on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dominikus1993/rust-project-euler
[INFO] finished tweaking git repo https://github.com/dominikus1993/rust-project-euler
[INFO] tweaked toml for git repo https://github.com/dominikus1993/rust-project-euler written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/dominikus1993/rust-project-euler already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8babb247de73b5e2c222ccb6251887cb1b2be6a12aa0434bcf1afd37b2eedf97
[INFO] running `"docker" "start" "-a" "8babb247de73b5e2c222ccb6251887cb1b2be6a12aa0434bcf1afd37b2eedf97"`
[INFO] [stderr]     Checking rust-project-euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `rem`
[INFO] [stderr]  --> src/euler2.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 |     fn rem(a: i32, b: i32) -> i32 {
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `produce_fib`
[INFO] [stderr]  --> src/euler2.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn produce_fib() -> Vec<i32> {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/euler2.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn solve() -> i32 {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rem`
[INFO] [stderr]  --> src/euler3.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 |     fn rem(a: i64, b: i64) -> i64 {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_prime`
[INFO] [stderr]  --> src/euler3.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub fn is_prime(num: i64) -> bool {
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/euler3.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn solve (num:i64) -> Option<i64> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_palindrome`
[INFO] [stderr]  --> src/euler4.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 |     pub fn is_palindrome(num: i64) -> bool {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/euler4.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn solve () -> Option<i64> {
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rem`
[INFO] [stderr]  --> src/euler5.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 |     fn rem(a: i32, b: i32) -> i32 {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_divisable_by_all_numbers`
[INFO] [stderr]  --> src/euler5.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub fn is_divisable_by_all_numbers (num: i32, nums: &Vec<i32>) -> bool {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/euler5.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn solve () -> i32 {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/euler6.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 |     pub fn solve () -> i32 {
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `"docker" "inspect" "8babb247de73b5e2c222ccb6251887cb1b2be6a12aa0434bcf1afd37b2eedf97"`
[INFO] running `"docker" "rm" "-f" "8babb247de73b5e2c222ccb6251887cb1b2be6a12aa0434bcf1afd37b2eedf97"`
[INFO] [stdout] 8babb247de73b5e2c222ccb6251887cb1b2be6a12aa0434bcf1afd37b2eedf97