[INFO] updating cached repository tlein/rust-cacher
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tlein/rust-cacher
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tlein/rust-cacher" "work/ex/clippy-test-run/sources/stable/gh/tlein/rust-cacher"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/tlein/rust-cacher'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tlein/rust-cacher" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/tlein/rust-cacher"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/tlein/rust-cacher'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 791f313ed169ad11d2800ce83fa9d021e8ddcb83
[INFO] sha for GitHub repo tlein/rust-cacher: 791f313ed169ad11d2800ce83fa9d021e8ddcb83
[INFO] validating manifest of tlein/rust-cacher 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 tlein/rust-cacher 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 tlein/rust-cacher
[INFO] finished frobbing tlein/rust-cacher
[INFO] frobbed toml for tlein/rust-cacher written to work/ex/clippy-test-run/sources/stable/gh/tlein/rust-cacher/Cargo.toml
[INFO] started frobbing tlein/rust-cacher
[INFO] finished frobbing tlein/rust-cacher
[INFO] frobbed toml for tlein/rust-cacher written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/tlein/rust-cacher/Cargo.toml
[INFO] crate tlein/rust-cacher 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 tlein/rust-cacher against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/tlein/rust-cacher:/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] 0d5b0ec9c19d2ee646ace726f84451226eee953d550757a46f29037fcc7db2dd
[INFO] running `"docker" "start" "-a" "0d5b0ec9c19d2ee646ace726f84451226eee953d550757a46f29037fcc7db2dd"`
[INFO] [stderr]     Checking cacher v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/lib.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |             entry
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/lib.rs:28:25
[INFO] [stderr]    |
[INFO] [stderr] 28 |             let entry = self.values.entry(arg).or_insert_with(|| result);
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/lib.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |             entry
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/lib.rs:28:25
[INFO] [stderr]    |
[INFO] [stderr] 28 |             let entry = self.values.entry(arg).or_insert_with(|| result);
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/lib.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             self.values.get(&arg).unwrap()
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&self.values[&arg]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/lib.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             self.values.get(&arg).unwrap()
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&self.values[&arg]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `"docker" "inspect" "0d5b0ec9c19d2ee646ace726f84451226eee953d550757a46f29037fcc7db2dd"`
[INFO] running `"docker" "rm" "-f" "0d5b0ec9c19d2ee646ace726f84451226eee953d550757a46f29037fcc7db2dd"`
[INFO] [stdout] 0d5b0ec9c19d2ee646ace726f84451226eee953d550757a46f29037fcc7db2dd