[INFO] cloning repository https://github.com/Paulswith/euler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Paulswith/euler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaulswith%2Feuler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaulswith%2Feuler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 932203a1711d67afc53dfe672ee55e0e7f8b8b31
[INFO] checking Paulswith/euler against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaulswith%2Feuler" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Paulswith/euler on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Paulswith/euler
[INFO] finished tweaking git repo https://github.com/Paulswith/euler
[INFO] tweaked toml for git repo https://github.com/Paulswith/euler written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Paulswith/euler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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] 4430ec7210922e2b45afd05e053b8ad6bccd87c5b397791bc0c379f536b9f852
[INFO] running `Command { std: "docker" "start" "-a" "4430ec7210922e2b45afd05e053b8ad6bccd87c5b397791bc0c379f536b9f852", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4430ec7210922e2b45afd05e053b8ad6bccd87c5b397791bc0c379f536b9f852", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4430ec7210922e2b45afd05e053b8ad6bccd87c5b397791bc0c379f536b9f852", kill_on_drop: false }`
[INFO] [stdout] 4430ec7210922e2b45afd05e053b8ad6bccd87c5b397791bc0c379f536b9f852
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 434c85d2c04049ffc32043b25ef3df98fd812ec80033a7c55510ca2cdc86244c
[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" "434c85d2c04049ffc32043b25ef3df98fd812ec80033a7c55510ca2cdc86244c", kill_on_drop: false }`
[INFO] [stderr]     Checking euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]    --> src/archives_1_50/archives_1_5.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |     use std::cmp::max;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]    --> src/archives_1_50/archives_1_5.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |     use std::cmp::max;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prime_factors`
[INFO] [stdout]    --> src/archives_1_50/archives_1_5.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut prime_factors: Vec<u64> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prime_factors`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prime_factors`
[INFO] [stdout]    --> src/archives_1_50/archives_1_5.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut prime_factors: Vec<u64> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prime_factors`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/archives_1_50/archives_1_5.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut prime_factors: Vec<u64> = vec![];
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/archives_1_50/archives_1_5.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut prime_factors: Vec<u64> = vec![];
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `primes`
[INFO] [stdout]    --> src/archives_1_50/archives_1_5.rs:178:8
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn primes(in_range: 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: `primes`
[INFO] [stdout]    --> src/archives_1_50/archives_1_5.rs:178:8
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn primes(in_range: u64) -> Vec<u64> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "434c85d2c04049ffc32043b25ef3df98fd812ec80033a7c55510ca2cdc86244c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "434c85d2c04049ffc32043b25ef3df98fd812ec80033a7c55510ca2cdc86244c", kill_on_drop: false }`
[INFO] [stdout] 434c85d2c04049ffc32043b25ef3df98fd812ec80033a7c55510ca2cdc86244c