[INFO] crate return_if_ok 0.1.0 is already in cache
[INFO] extracting crate return_if_ok 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/return_if_ok/0.1.0
[INFO] extracting crate return_if_ok 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/return_if_ok/0.1.0
[INFO] validating manifest of return_if_ok-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 return_if_ok-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 return_if_ok-0.1.0
[INFO] finished frobbing return_if_ok-0.1.0
[INFO] frobbed toml for return_if_ok-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/return_if_ok/0.1.0/Cargo.toml
[INFO] started frobbing return_if_ok-0.1.0
[INFO] finished frobbing return_if_ok-0.1.0
[INFO] frobbed toml for return_if_ok-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/return_if_ok/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 return_if_ok-0.1.0 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/return_if_ok/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" "-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] bf964c10ea94f4dd6493aaa9bcea0e4164821414356044413b6a5c313feac7d9
[INFO] running `"docker" "start" "-a" "bf964c10ea94f4dd6493aaa9bcea0e4164821414356044413b6a5c313feac7d9"`
[INFO] [stderr]     Checking return_if_ok v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]   --> lib.rs:4:9
[INFO] [stderr]    |
[INFO] [stderr] 4  | /         match $expression {
[INFO] [stderr] 5  | |             ::std::result::Result::Ok(value) => {
[INFO] [stderr] 6  | |                 return ::std::result::Result::Ok(value)
[INFO] [stderr] 7  | |             }
[INFO] [stderr] 8  | |             ::std::result::Result::Err(error) => error
[INFO] [stderr] 9  | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr] ...
[INFO] [stderr] 17 |           Err(return_if_ok!(Ok(4)))
[INFO] [stderr]    |               -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unit_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]    |
[INFO] [stderr] 4  |         ()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]   --> lib.rs:4:9
[INFO] [stderr]    |
[INFO] [stderr] 4  | /         match $expression {
[INFO] [stderr] 5  | |             ::std::result::Result::Ok(value) => {
[INFO] [stderr] 6  | |                 return ::std::result::Result::Ok(value)
[INFO] [stderr] 7  | |             }
[INFO] [stderr] 8  | |             ::std::result::Result::Err(error) => error
[INFO] [stderr] 9  | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr] ...
[INFO] [stderr] 22 |           Err(return_if_ok!(Err(())))
[INFO] [stderr]    |               ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]    |
[INFO] [stderr] 4  |         ()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "bf964c10ea94f4dd6493aaa9bcea0e4164821414356044413b6a5c313feac7d9"`
[INFO] running `"docker" "rm" "-f" "bf964c10ea94f4dd6493aaa9bcea0e4164821414356044413b6a5c313feac7d9"`
[INFO] [stdout] bf964c10ea94f4dd6493aaa9bcea0e4164821414356044413b6a5c313feac7d9