[INFO] crate groups 0.1.1 is already in cache
[INFO] extracting crate groups 0.1.1 into work/ex/clippy-test-run/sources/stable/reg/groups/0.1.1
[INFO] extracting crate groups 0.1.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/groups/0.1.1
[INFO] validating manifest of groups-0.1.1 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 groups-0.1.1 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 groups-0.1.1
[INFO] finished frobbing groups-0.1.1
[INFO] frobbed toml for groups-0.1.1 written to work/ex/clippy-test-run/sources/stable/reg/groups/0.1.1/Cargo.toml
[INFO] started frobbing groups-0.1.1
[INFO] finished frobbing groups-0.1.1
[INFO] frobbed toml for groups-0.1.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/groups/0.1.1/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 groups-0.1.1 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/groups/0.1.1:/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] abb3b948195531594fabb0aacf0bad2160bc3d2a2e955e580167bb723abedea6
[INFO] running `"docker" "start" "-a" "abb3b948195531594fabb0aacf0bad2160bc3d2a2e955e580167bb723abedea6"`
[INFO] [stderr]     Checking groups v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     return Some(group);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some(group)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     return groups;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `groups`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     return None;
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:99:5
[INFO] [stderr]    |
[INFO] [stderr] 99 |     return None;
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:104:5
[INFO] [stderr]     |
[INFO] [stderr] 104 |     return read_group();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `read_group()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:134:26
[INFO] [stderr]     |
[INFO] [stderr] 134 |     if list.is_empty() { return None; }
[INFO] [stderr]     |                          ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:135:12
[INFO] [stderr]     |
[INFO] [stderr] 135 |     else { return Some(list); }
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some(list)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/lib.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 | /         if gid.is_some() {
[INFO] [stderr] 123 | |             if group.gid == gid.unwrap() && group.name != user_name {
[INFO] [stderr] 124 | |                 list.push(group.clone());
[INFO] [stderr] 125 | |             }
[INFO] [stderr] 126 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 122 |         if gid.is_some() && group.gid == gid.unwrap() && group.name != user_name {
[INFO] [stderr] 123 |     list.push(group.clone());
[INFO] [stderr] 124 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     return Some(group);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some(group)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     return groups;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `groups`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     return None;
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:99:5
[INFO] [stderr]    |
[INFO] [stderr] 99 |     return None;
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:104:5
[INFO] [stderr]     |
[INFO] [stderr] 104 |     return read_group();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `read_group()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:134:26
[INFO] [stderr]     |
[INFO] [stderr] 134 |     if list.is_empty() { return None; }
[INFO] [stderr]     |                          ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:135:12
[INFO] [stderr]     |
[INFO] [stderr] 135 |     else { return Some(list); }
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some(list)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/lib.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 | /         if gid.is_some() {
[INFO] [stderr] 123 | |             if group.gid == gid.unwrap() && group.name != user_name {
[INFO] [stderr] 124 | |                 list.push(group.clone());
[INFO] [stderr] 125 | |             }
[INFO] [stderr] 126 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 122 |         if gid.is_some() && group.gid == gid.unwrap() && group.name != user_name {
[INFO] [stderr] 123 |     list.push(group.clone());
[INFO] [stderr] 124 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:157:5
[INFO] [stderr]     |
[INFO] [stderr] 157 | /     match get_group_by_name("bin") {
[INFO] [stderr] 158 | |         Some(group) => {
[INFO] [stderr] 159 | |             assert_eq!(group.name, "bin".to_string());
[INFO] [stderr] 160 | |         },
[INFO] [stderr] 161 | |         None => { }
[INFO] [stderr] 162 | |     };
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 157 |     if let Some(group) = get_group_by_name("bin") {
[INFO] [stderr] 158 |     assert_eq!(group.name, "bin".to_string());
[INFO] [stderr] 159 | };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 | /     match get_group_by_gid(1) {
[INFO] [stderr] 168 | |         Some(group) => {
[INFO] [stderr] 169 | |             assert_eq!(group.gid, 1);
[INFO] [stderr] 170 | |         },
[INFO] [stderr] 171 | |         None => { }
[INFO] [stderr] 172 | |     };
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 167 |     if let Some(group) = get_group_by_gid(1) {
[INFO] [stderr] 168 |     assert_eq!(group.gid, 1);
[INFO] [stderr] 169 | };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:181:5
[INFO] [stderr]     |
[INFO] [stderr] 181 | /     match get_group_list(&user, None) {
[INFO] [stderr] 182 | |         Some(list) => {
[INFO] [stderr] 183 | |             for item in list { println!("{:?}", item); }
[INFO] [stderr] 184 | |         },
[INFO] [stderr] 185 | |         None => { }
[INFO] [stderr] 186 | |     };
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 181 |     if let Some(list) = get_group_list(&user, None) {
[INFO] [stderr] 182 |     for item in list { println!("{:?}", item); }
[INFO] [stderr] 183 | };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `"docker" "inspect" "abb3b948195531594fabb0aacf0bad2160bc3d2a2e955e580167bb723abedea6"`
[INFO] running `"docker" "rm" "-f" "abb3b948195531594fabb0aacf0bad2160bc3d2a2e955e580167bb723abedea6"`
[INFO] [stdout] abb3b948195531594fabb0aacf0bad2160bc3d2a2e955e580167bb723abedea6