[INFO] cloning repository https://github.com/Ethan-Arrowood/project-euler-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ethan-Arrowood/project-euler-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthan-Arrowood%2Fproject-euler-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthan-Arrowood%2Fproject-euler-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fae2e706f76be1c41486c2e9f69d653fbfc61c5e
[INFO] checking Ethan-Arrowood/project-euler-rust against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthan-Arrowood%2Fproject-euler-rust" "/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/Ethan-Arrowood/project-euler-rust on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Ethan-Arrowood/project-euler-rust
[INFO] finished tweaking git repo https://github.com/Ethan-Arrowood/project-euler-rust
[INFO] tweaked toml for git repo https://github.com/Ethan-Arrowood/project-euler-rust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Ethan-Arrowood/project-euler-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "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" "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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b05ae9c5abda3b1ef0bb97fee87829dd6e0aabdd644b8e1a485f70529b5cf2b9
[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" "b05ae9c5abda3b1ef0bb97fee87829dd6e0aabdd644b8e1a485f70529b5cf2b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b05ae9c5abda3b1ef0bb97fee87829dd6e0aabdd644b8e1a485f70529b5cf2b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b05ae9c5abda3b1ef0bb97fee87829dd6e0aabdd644b8e1a485f70529b5cf2b9", kill_on_drop: false }`
[INFO] [stdout] b05ae9c5abda3b1ef0bb97fee87829dd6e0aabdd644b8e1a485f70529b5cf2b9
[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" "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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 687ea71eaff298d0b28bb0d0a08968c11a7320baee0fef29e8d2a7ccb567e68b
[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" "687ea71eaff298d0b28bb0d0a08968c11a7320baee0fef29e8d2a7ccb567e68b", kill_on_drop: false }`
[INFO] [stderr]     Checking largest_palindrome_product v0.1.0 (/opt/rustwide/workdir/largest_palindrome_product)
[INFO] [stderr]     Checking even_fib_nums v0.1.0 (/opt/rustwide/workdir/even_fib_nums)
[INFO] [stderr]     Checking mult_3_and_5 v0.1.0 (/opt/rustwide/workdir/mult_3_and_5)
[INFO] [stderr]     Checking largest_prime_factor v0.1.0 (/opt/rustwide/workdir/largest_prime_factor)
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]  --> even_fib_nums/src/main.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut a = 1;
[INFO] [stdout]   |             ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]  --> even_fib_nums/src/main.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut a = 1;
[INFO] [stdout]   |             ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `Command { std: "docker" "inspect" "687ea71eaff298d0b28bb0d0a08968c11a7320baee0fef29e8d2a7ccb567e68b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "687ea71eaff298d0b28bb0d0a08968c11a7320baee0fef29e8d2a7ccb567e68b", kill_on_drop: false }`
[INFO] [stdout] 687ea71eaff298d0b28bb0d0a08968c11a7320baee0fef29e8d2a7ccb567e68b