[INFO] crate derive_more 0.13.0 is already in cache
[INFO] extracting crate derive_more 0.13.0 into work/ex/clippy-test-run/sources/stable/reg/derive_more/0.13.0
[INFO] extracting crate derive_more 0.13.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/derive_more/0.13.0
[INFO] validating manifest of derive_more-0.13.0 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 derive_more-0.13.0 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 derive_more-0.13.0
[INFO] finished frobbing derive_more-0.13.0
[INFO] frobbed toml for derive_more-0.13.0 written to work/ex/clippy-test-run/sources/stable/reg/derive_more/0.13.0/Cargo.toml
[INFO] started frobbing derive_more-0.13.0
[INFO] finished frobbing derive_more-0.13.0
[INFO] frobbed toml for derive_more-0.13.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/derive_more/0.13.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 derive_more-0.13.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/derive_more/0.13.0:/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] 7b68c70568fc09825f258e5f24e1df8b2def3b628eb9a36e860c682d1debfc31
[INFO] running `"docker" "start" "-a" "7b68c70568fc09825f258e5f24e1df8b2def3b628eb9a36e860c682d1debfc31"`
[INFO] [stderr]     Checking syn v0.15.26
[INFO] [stderr]     Checking derive_more v0.13.0 (/opt/crater/workdir)
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/display.rs:151:12
[INFO] [stderr]     |
[INFO] [stderr] 151 |         if fields.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `fields.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]    --> src/display.rs:211:63
[INFO] [stderr]     |
[INFO] [stderr] 211 |                   let meta = self.find_meta(&self.input.attrs)?.ok_or(Error::new(
[INFO] [stderr]     |  _______________________________________________________________^
[INFO] [stderr] 212 | |                     self.input.span(),
[INFO] [stderr] 213 | |                     "Can not automatically infer format for unions",
[INFO] [stderr] 214 | |                 ))?;
[INFO] [stderr]     | |__________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 211 |                 let meta = self.find_meta(&self.input.attrs)?.ok_or_else(|| Error::new(
[INFO] [stderr] 212 |                     self.input.span(),
[INFO] [stderr] 213 |                     "Can not automatically infer format for unions",
[INFO] [stderr] 214 |                 ))?;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/display.rs:151:12
[INFO] [stderr]     |
[INFO] [stderr] 151 |         if fields.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `fields.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]    --> src/display.rs:211:63
[INFO] [stderr]     |
[INFO] [stderr] 211 |                   let meta = self.find_meta(&self.input.attrs)?.ok_or(Error::new(
[INFO] [stderr]     |  _______________________________________________________________^
[INFO] [stderr] 212 | |                     self.input.span(),
[INFO] [stderr] 213 | |                     "Can not automatically infer format for unions",
[INFO] [stderr] 214 | |                 ))?;
[INFO] [stderr]     | |__________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 211 |                 let meta = self.find_meta(&self.input.attrs)?.ok_or_else(|| Error::new(
[INFO] [stderr] 212 |                     self.input.span(),
[INFO] [stderr] 213 |                     "Can not automatically infer format for unions",
[INFO] [stderr] 214 |                 ))?;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.70s
[INFO] running `"docker" "inspect" "7b68c70568fc09825f258e5f24e1df8b2def3b628eb9a36e860c682d1debfc31"`
[INFO] running `"docker" "rm" "-f" "7b68c70568fc09825f258e5f24e1df8b2def3b628eb9a36e860c682d1debfc31"`
[INFO] [stdout] 7b68c70568fc09825f258e5f24e1df8b2def3b628eb9a36e860c682d1debfc31