[INFO] updating cached repository PhilipDaniels/projecteuler
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PhilipDaniels/projecteuler
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PhilipDaniels/projecteuler" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/PhilipDaniels/projecteuler"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/PhilipDaniels/projecteuler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PhilipDaniels/projecteuler" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/PhilipDaniels/projecteuler"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/PhilipDaniels/projecteuler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 32960482901579f6c3af5ba18865db39eb6c62b9
[INFO] sha for GitHub repo PhilipDaniels/projecteuler: 32960482901579f6c3af5ba18865db39eb6c62b9
[INFO] validating manifest of PhilipDaniels/projecteuler on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of PhilipDaniels/projecteuler on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing PhilipDaniels/projecteuler
[INFO] finished frobbing PhilipDaniels/projecteuler
[INFO] frobbed toml for PhilipDaniels/projecteuler written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/PhilipDaniels/projecteuler/Cargo.toml
[INFO] started frobbing PhilipDaniels/projecteuler
[INFO] finished frobbing PhilipDaniels/projecteuler
[INFO] frobbed toml for PhilipDaniels/projecteuler written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/PhilipDaniels/projecteuler/Cargo.toml
[INFO] crate PhilipDaniels/projecteuler already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking PhilipDaniels/projecteuler against master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-6/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/PhilipDaniels/projecteuler:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4fc54ee1abe81af0d9e806aee808a8c87587ffd530ecec10a45868d9fa8aaade
[INFO] running `"docker" "start" "-a" "4fc54ee1abe81af0d9e806aee808a8c87587ffd530ecec10a45868d9fa8aaade"`
[INFO] [stderr]     Checking projecteuler v0.1.0 (/opt/crater/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 1.00s
[INFO] running `"docker" "inspect" "4fc54ee1abe81af0d9e806aee808a8c87587ffd530ecec10a45868d9fa8aaade"`
[INFO] running `"docker" "rm" "-f" "4fc54ee1abe81af0d9e806aee808a8c87587ffd530ecec10a45868d9fa8aaade"`
[INFO] [stdout] 4fc54ee1abe81af0d9e806aee808a8c87587ffd530ecec10a45868d9fa8aaade