[INFO] updating cached repository https://github.com/AlainHardy/rust_prime_finder
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1557eb0b1deed2e667b1fa301059705fb036b2de
[INFO] checking AlainHardy/rust_prime_finder against master#e22b61bff0bdd08be7665607cb7be3748c8a35d2 for pr-74627
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlainHardy%2Frust_prime_finder" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlainHardy/rust_prime_finder on toolchain e22b61bff0bdd08be7665607cb7be3748c8a35d2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AlainHardy/rust_prime_finder
[INFO] finished tweaking git repo https://github.com/AlainHardy/rust_prime_finder
[INFO] tweaked toml for git repo https://github.com/AlainHardy/rust_prime_finder written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/AlainHardy/rust_prime_finder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "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] af79d5bb38d56e3267bf526aa31b1195330c78ec084a1e846bd50b32d762d9f7
[INFO] running `Command { std: "docker" "start" "-a" "af79d5bb38d56e3267bf526aa31b1195330c78ec084a1e846bd50b32d762d9f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af79d5bb38d56e3267bf526aa31b1195330c78ec084a1e846bd50b32d762d9f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af79d5bb38d56e3267bf526aa31b1195330c78ec084a1e846bd50b32d762d9f7", kill_on_drop: false }`
[INFO] [stdout] af79d5bb38d56e3267bf526aa31b1195330c78ec084a1e846bd50b32d762d9f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c2714af9eef5c4a38b444b3c366821f331bab6d85737e36a09760842982b7a2
[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" "6c2714af9eef5c4a38b444b3c366821f331bab6d85737e36a09760842982b7a2", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_prime_finder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `compute_for`
[INFO] [stdout]  --> src/prime_finder.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn compute_for(value: u32) -> Vec<u32> {
[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] [stdout] warning: function is never used: `compute_for`
[INFO] [stdout]  --> src/prime_finder.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn compute_for(value: u32) -> Vec<u32> {
[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 0.65s
[INFO] running `Command { std: "docker" "inspect" "6c2714af9eef5c4a38b444b3c366821f331bab6d85737e36a09760842982b7a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c2714af9eef5c4a38b444b3c366821f331bab6d85737e36a09760842982b7a2", kill_on_drop: false }`
[INFO] [stdout] 6c2714af9eef5c4a38b444b3c366821f331bab6d85737e36a09760842982b7a2