[INFO] updating cached repository ldgrp/advent-of-code-2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ldgrp/advent-of-code-2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ldgrp/advent-of-code-2018" "work/ex/clippy-test-run/sources/stable/gh/ldgrp/advent-of-code-2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/ldgrp/advent-of-code-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ldgrp/advent-of-code-2018" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ldgrp/advent-of-code-2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ldgrp/advent-of-code-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 95340203328835faf1967d06c8b67215d10da4a9
[INFO] sha for GitHub repo ldgrp/advent-of-code-2018: 95340203328835faf1967d06c8b67215d10da4a9
[INFO] validating manifest of ldgrp/advent-of-code-2018 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ldgrp/advent-of-code-2018 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ldgrp/advent-of-code-2018
[INFO] finished frobbing ldgrp/advent-of-code-2018
[INFO] frobbed toml for ldgrp/advent-of-code-2018 written to work/ex/clippy-test-run/sources/stable/gh/ldgrp/advent-of-code-2018/Cargo.toml
[INFO] started frobbing ldgrp/advent-of-code-2018
[INFO] finished frobbing ldgrp/advent-of-code-2018
[INFO] frobbed toml for ldgrp/advent-of-code-2018 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ldgrp/advent-of-code-2018/Cargo.toml
[INFO] crate ldgrp/advent-of-code-2018 has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting ldgrp/advent-of-code-2018 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/ldgrp/advent-of-code-2018:/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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 77b22d73fba2ab5887423c869313642e2e5bc6c991e735f4cb1ed8e5c2ed075e
[INFO] running `"docker" "start" "-a" "77b22d73fba2ab5887423c869313642e2e5bc6c991e735f4cb1ed8e5c2ed075e"`
[INFO] [stderr]     Checking aoc2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/day02.rs:47:31
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn find_common_letters(word1: &String, word2: &String) -> String {
[INFO] [stderr]    |                               ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/day02.rs:47:47
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn find_common_letters(word1: &String, word2: &String) -> String {
[INFO] [stderr]    |                                               ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/day02.rs:47:31
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn find_common_letters(word1: &String, word2: &String) -> String {
[INFO] [stderr]    |                               ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/day02.rs:47:47
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn find_common_letters(word1: &String, word2: &String) -> String {
[INFO] [stderr]    |                                               ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "77b22d73fba2ab5887423c869313642e2e5bc6c991e735f4cb1ed8e5c2ed075e"`
[INFO] running `"docker" "rm" "-f" "77b22d73fba2ab5887423c869313642e2e5bc6c991e735f4cb1ed8e5c2ed075e"`
[INFO] [stdout] 77b22d73fba2ab5887423c869313642e2e5bc6c991e735f4cb1ed8e5c2ed075e