[INFO] updating cached repository https://github.com/PhilipDaniels/projecteuler
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 32960482901579f6c3af5ba18865db39eb6c62b9
[INFO] checking PhilipDaniels/projecteuler against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhilipDaniels%2Fprojecteuler" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PhilipDaniels/projecteuler on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[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 work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/PhilipDaniels/projecteuler already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d19f99ae2ce60a120a77acd7b994ca14d99e934241b0ff250a241b2148d52c7c
[INFO] running `"docker" "start" "-a" "d19f99ae2ce60a120a77acd7b994ca14d99e934241b0ff250a241b2148d52c7c"`
[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] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/calc.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let mut x = n;
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/calc.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let mut exponent = 1;
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/p011_to_p020.rs:379:13
[INFO] [stderr]     |
[INFO] [stderr] 379 |         let mut d = column_sum;
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/calc.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let mut x = n;
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/calc.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let mut exponent = 1;
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/p011_to_p020.rs:379:13
[INFO] [stderr]     |
[INFO] [stderr] 379 |         let mut d = column_sum;
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.92s
[INFO] running `"docker" "inspect" "d19f99ae2ce60a120a77acd7b994ca14d99e934241b0ff250a241b2148d52c7c"`
[INFO] running `"docker" "rm" "-f" "d19f99ae2ce60a120a77acd7b994ca14d99e934241b0ff250a241b2148d52c7c"`
[INFO] [stdout] d19f99ae2ce60a120a77acd7b994ca14d99e934241b0ff250a241b2148d52c7c