[INFO] cloning 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" "clone" "--bare" "https://github.com/AlainHardy/rust_prime_finder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlainHardy%2Frust_prime_finder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlainHardy%2Frust_prime_finder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1557eb0b1deed2e667b1fa301059705fb036b2de
[INFO] checking AlainHardy/rust_prime_finder against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlainHardy%2Frust_prime_finder" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlainHardy/rust_prime_finder on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "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-6/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" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd61d9a325e8e9cf4b12c537ded0f9fd06291cf5e934b33f11f75fd9ae7d451a
[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" "bd61d9a325e8e9cf4b12c537ded0f9fd06291cf5e934b33f11f75fd9ae7d451a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd61d9a325e8e9cf4b12c537ded0f9fd06291cf5e934b33f11f75fd9ae7d451a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd61d9a325e8e9cf4b12c537ded0f9fd06291cf5e934b33f11f75fd9ae7d451a", kill_on_drop: false }`
[INFO] [stdout] bd61d9a325e8e9cf4b12c537ded0f9fd06291cf5e934b33f11f75fd9ae7d451a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "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] bf8d39f4dae4fb02afdc786eb810edc1f3d2b8739edf7c9770f748350bee820c
[INFO] running `Command { std: "docker" "start" "-a" "bf8d39f4dae4fb02afdc786eb810edc1f3d2b8739edf7c9770f748350bee820c", 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 0.38s
[INFO] running `Command { std: "docker" "inspect" "bf8d39f4dae4fb02afdc786eb810edc1f3d2b8739edf7c9770f748350bee820c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf8d39f4dae4fb02afdc786eb810edc1f3d2b8739edf7c9770f748350bee820c", kill_on_drop: false }`
[INFO] [stdout] bf8d39f4dae4fb02afdc786eb810edc1f3d2b8739edf7c9770f748350bee820c