[INFO] cloning repository https://github.com/PhilipDaniels/projecteuler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PhilipDaniels/projecteuler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhilipDaniels%2Fprojecteuler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhilipDaniels%2Fprojecteuler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 32960482901579f6c3af5ba18865db39eb6c62b9
[INFO] checking PhilipDaniels/projecteuler against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhilipDaniels%2Fprojecteuler" "/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/PhilipDaniels/projecteuler on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PhilipDaniels/projecteuler
[INFO] finished tweaking git repo https://github.com/PhilipDaniels/projecteuler
[INFO] tweaked toml for git repo https://github.com/PhilipDaniels/projecteuler written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/PhilipDaniels/projecteuler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] 0873bc26f1d4eca55042228c91d84418c7fc99bb906da270e3ade257f74a6a01
[INFO] running `Command { std: "docker" "start" "-a" "0873bc26f1d4eca55042228c91d84418c7fc99bb906da270e3ade257f74a6a01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0873bc26f1d4eca55042228c91d84418c7fc99bb906da270e3ade257f74a6a01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0873bc26f1d4eca55042228c91d84418c7fc99bb906da270e3ade257f74a6a01", kill_on_drop: false }`
[INFO] [stdout] 0873bc26f1d4eca55042228c91d84418c7fc99bb906da270e3ade257f74a6a01
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 703a417cc8a3362ac2ce14e7454d7d3688844420aeebf82b976337af5521f5b6
[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" "703a417cc8a3362ac2ce14e7454d7d3688844420aeebf82b976337af5521f5b6", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking elapsed v0.1.2
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking projecteuler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/calc.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let mut x = n;
[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/calc.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut exponent = 1;
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/p011_to_p020.rs:379:13
[INFO] [stdout]     |
[INFO] [stdout] 379 |         let mut d = column_sum;
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/calc.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let mut x = n;
[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/calc.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut exponent = 1;
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/p011_to_p020.rs:379:13
[INFO] [stdout]     |
[INFO] [stdout] 379 |         let mut d = column_sum;
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.82s
[INFO] running `Command { std: "docker" "inspect" "703a417cc8a3362ac2ce14e7454d7d3688844420aeebf82b976337af5521f5b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "703a417cc8a3362ac2ce14e7454d7d3688844420aeebf82b976337af5521f5b6", kill_on_drop: false }`
[INFO] [stdout] 703a417cc8a3362ac2ce14e7454d7d3688844420aeebf82b976337af5521f5b6