[INFO] updating cached repository kvark/ref-image
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kvark/ref-image
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kvark/ref-image" "work/ex/clippy-test-run/sources/stable/gh/kvark/ref-image"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/kvark/ref-image'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kvark/ref-image" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kvark/ref-image"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kvark/ref-image'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d2b4d2347f0fd760676327c4851fadd2b353c5ae
[INFO] sha for GitHub repo kvark/ref-image: d2b4d2347f0fd760676327c4851fadd2b353c5ae
[INFO] validating manifest of kvark/ref-image 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 kvark/ref-image 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 kvark/ref-image
[INFO] finished frobbing kvark/ref-image
[INFO] frobbed toml for kvark/ref-image written to work/ex/clippy-test-run/sources/stable/gh/kvark/ref-image/Cargo.toml
[INFO] started frobbing kvark/ref-image
[INFO] finished frobbing kvark/ref-image
[INFO] frobbed toml for kvark/ref-image written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kvark/ref-image/Cargo.toml
[INFO] crate kvark/ref-image 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 kvark/ref-image against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/kvark/ref-image:/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] 0fbc9419218a22ebf8411bc9e491885ca37c9d1efaaf91a15d186e5b2fc694fa
[INFO] running `"docker" "start" "-a" "0fbc9419218a22ebf8411bc9e491885ca37c9d1efaaf91a15d186e5b2fc694fa"`
[INFO] [stderr]     Checking rayon-core v1.3.0
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking ref_image v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/bin/compare.rs:66:17
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 "REFTEST TEST-UNEXPECTED-FAIL",
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::write_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/bin/compare.rs:68:17
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 "image comparison, max difference",
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/bin/compare.rs:70:17
[INFO] [stderr]    |
[INFO] [stderr] 70 |                 "number of differing pixels",
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/bin/compare.rs:66:17
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 "REFTEST TEST-UNEXPECTED-FAIL",
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::write_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/bin/compare.rs:68:17
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 "image comparison, max difference",
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/bin/compare.rs:70:17
[INFO] [stderr]    |
[INFO] [stderr] 70 |                 "number of differing pixels",
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_literal
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/bin/compare.rs:18:10
[INFO] [stderr]    |
[INFO] [stderr] 18 |         .expect(&format!("Unable to load {}", path));
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Unable to load {}", path))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/bin/compare.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(&format!("Unable to parse {}", path))
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Unable to parse {}", path))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/bin/compare.rs:18:10
[INFO] [stderr]    |
[INFO] [stderr] 18 |         .expect(&format!("Unable to load {}", path));
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Unable to load {}", path))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/bin/compare.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |         .expect(&format!("Unable to parse {}", path))
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Unable to parse {}", path))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.65s
[INFO] running `"docker" "inspect" "0fbc9419218a22ebf8411bc9e491885ca37c9d1efaaf91a15d186e5b2fc694fa"`
[INFO] running `"docker" "rm" "-f" "0fbc9419218a22ebf8411bc9e491885ca37c9d1efaaf91a15d186e5b2fc694fa"`
[INFO] [stdout] 0fbc9419218a22ebf8411bc9e491885ca37c9d1efaaf91a15d186e5b2fc694fa