[INFO] crate clioptions 0.1.0 is already in cache
[INFO] extracting crate clioptions 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/clioptions/0.1.0
[INFO] extracting crate clioptions 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/clioptions/0.1.0
[INFO] validating manifest of clioptions-0.1.0 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 clioptions-0.1.0 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 clioptions-0.1.0
[INFO] finished frobbing clioptions-0.1.0
[INFO] frobbed toml for clioptions-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/clioptions/0.1.0/Cargo.toml
[INFO] started frobbing clioptions-0.1.0
[INFO] finished frobbing clioptions-0.1.0
[INFO] frobbed toml for clioptions-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/clioptions/0.1.0/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 clioptions-0.1.0 against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/clioptions/0.1.0:/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 -Dclippy::into_iter_on_array" "-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] af9d8ca4696f93ceb79d540d1e44be1c30c7bf125f15d0ac479391454661dc69
[INFO] running `"docker" "start" "-a" "af9d8ca4696f93ceb79d540d1e44be1c30c7bf125f15d0ac479391454661dc69"`
[INFO] [stderr] warning: unused manifest key: lib.crate_lib
[INFO] [stderr]     Checking clioptions 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:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 |        arg
[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:31:18
[INFO] [stderr]    |
[INFO] [stderr] 31 |          let arg = match a {
[INFO] [stderr]    |  __________________^
[INFO] [stderr] 32 | |             Some(a) => a,
[INFO] [stderr] 33 | |             None => String::new()
[INFO] [stderr] 34 | |        };
[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:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         arg
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/lib.rs:41:19
[INFO] [stderr]    |
[INFO] [stderr] 41 |           let arg = match a {
[INFO] [stderr]    |  ___________________^
[INFO] [stderr] 42 | |             Some(a) => a,
[INFO] [stderr] 43 | |             None => self.program.clone()
[INFO] [stderr] 44 | |         };
[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:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 |        arg
[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:31:18
[INFO] [stderr]    |
[INFO] [stderr] 31 |          let arg = match a {
[INFO] [stderr]    |  __________________^
[INFO] [stderr] 32 | |             Some(a) => a,
[INFO] [stderr] 33 | |             None => String::new()
[INFO] [stderr] 34 | |        };
[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:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         arg
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/lib.rs:41:19
[INFO] [stderr]    |
[INFO] [stderr] 41 |           let arg = match a {
[INFO] [stderr]    |  ___________________^
[INFO] [stderr] 42 | |             Some(a) => a,
[INFO] [stderr] 43 | |             None => self.program.clone()
[INFO] [stderr] 44 | |         };
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "af9d8ca4696f93ceb79d540d1e44be1c30c7bf125f15d0ac479391454661dc69"`
[INFO] running `"docker" "rm" "-f" "af9d8ca4696f93ceb79d540d1e44be1c30c7bf125f15d0ac479391454661dc69"`
[INFO] [stdout] af9d8ca4696f93ceb79d540d1e44be1c30c7bf125f15d0ac479391454661dc69