[INFO] crate ipgen 0.0.4 is already in cache
[INFO] extracting crate ipgen 0.0.4 into work/ex/clippy-test-run/sources/stable/reg/ipgen/0.0.4
[INFO] extracting crate ipgen 0.0.4 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/ipgen/0.0.4
[INFO] validating manifest of ipgen-0.0.4 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 ipgen-0.0.4 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 ipgen-0.0.4
[INFO] finished frobbing ipgen-0.0.4
[INFO] frobbed toml for ipgen-0.0.4 written to work/ex/clippy-test-run/sources/stable/reg/ipgen/0.0.4/Cargo.toml
[INFO] started frobbing ipgen-0.0.4
[INFO] finished frobbing ipgen-0.0.4
[INFO] frobbed toml for ipgen-0.0.4 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/ipgen/0.0.4/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 ipgen-0.0.4 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/ipgen/0.0.4:/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] 8f4f4f1591f00241f30da7090e6002c3e489ad3a7a731a7d2b74472c75eb93f0
[INFO] running `"docker" "start" "-a" "8f4f4f1591f00241f30da7090e6002c3e489ad3a7a731a7d2b74472c75eb93f0"`
[INFO] [stderr]     Checking ipnetwork v0.10.0
[INFO] [stderr]     Checking ipgen v0.0.4 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:39:21
[INFO] [stderr]    |
[INFO] [stderr] 39 |                     return ip6(name, net).map(|ip| IpAddr::V6(ip));
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `ip6(name, net).map(|ip| IpAddr::V6(ip))`
[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:41:29
[INFO] [stderr]    |
[INFO] [stderr] 41 |                 Err(msg) => return Err(msg),
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(msg)`
[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:63:51
[INFO] [stderr]    |
[INFO] [stderr] 63 |                                         Ok(ip) => return Ok(IpAddr::V4(ip)),
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(IpAddr::V4(ip))`
[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:65:45
[INFO] [stderr]    |
[INFO] [stderr] 65 | /                                             return Err(format!("generated IPv4 address ({}) has \
[INFO] [stderr] 66 | |                                                                 {}",
[INFO] [stderr] 67 | |                                                                addr,
[INFO] [stderr] 68 | |                                                                msg))
[INFO] [stderr]    | |____________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 65 |                                             Err(format!("generated IPv4 address ({}) has \
[INFO] [stderr] 66 |                                                                 {}",
[INFO] [stderr] 67 |                                                                addr,
[INFO] [stderr] 68 |                                                                msg))
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:72:45
[INFO] [stderr]    |
[INFO] [stderr] 72 |                                 Err(msg) => return Err(msg),
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(msg)`
[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:75:37
[INFO] [stderr]    |
[INFO] [stderr] 75 |                         Err(msg) => return Err(msg),
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(msg)`
[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:78:29
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 Err(msg) => return Err(msg),
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(msg)`
[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:39:21
[INFO] [stderr]    |
[INFO] [stderr] 39 |                     return ip6(name, net).map(|ip| IpAddr::V6(ip));
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `ip6(name, net).map(|ip| IpAddr::V6(ip))`
[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:41:29
[INFO] [stderr]    |
[INFO] [stderr] 41 |                 Err(msg) => return Err(msg),
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(msg)`
[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:63:51
[INFO] [stderr]    |
[INFO] [stderr] 63 |                                         Ok(ip) => return Ok(IpAddr::V4(ip)),
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(IpAddr::V4(ip))`
[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:65:45
[INFO] [stderr]    |
[INFO] [stderr] 65 | /                                             return Err(format!("generated IPv4 address ({}) has \
[INFO] [stderr] 66 | |                                                                 {}",
[INFO] [stderr] 67 | |                                                                addr,
[INFO] [stderr] 68 | |                                                                msg))
[INFO] [stderr]    | |____________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 65 |                                             Err(format!("generated IPv4 address ({}) has \
[INFO] [stderr] 66 |                                                                 {}",
[INFO] [stderr] 67 |                                                                addr,
[INFO] [stderr] 68 |                                                                msg))
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:72:45
[INFO] [stderr]    |
[INFO] [stderr] 72 |                                 Err(msg) => return Err(msg),
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(msg)`
[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:75:37
[INFO] [stderr]    |
[INFO] [stderr] 75 |                         Err(msg) => return Err(msg),
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(msg)`
[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:78:29
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 Err(msg) => return Err(msg),
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(msg)`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/lib.rs:24:53
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let ip_addr = match IpAddr::from_str(cidr.split("/").collect::<Vec<&str>>()[0])
[INFO] [stderr]    |                                                     ^^^ help: try using a char instead: `'/'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib.rs:39:47
[INFO] [stderr]    |
[INFO] [stderr] 39 |                     return ip6(name, net).map(|ip| IpAddr::V6(ip));
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `IpAddr::V6`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/lib.rs:24:53
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let ip_addr = match IpAddr::from_str(cidr.split("/").collect::<Vec<&str>>()[0])
[INFO] [stderr]    |                                                     ^^^ help: try using a char instead: `'/'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/lib.rs:39:47
[INFO] [stderr]    |
[INFO] [stderr] 39 |                     return ip6(name, net).map(|ip| IpAddr::V6(ip));
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `IpAddr::V6`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.06s
[INFO] running `"docker" "inspect" "8f4f4f1591f00241f30da7090e6002c3e489ad3a7a731a7d2b74472c75eb93f0"`
[INFO] running `"docker" "rm" "-f" "8f4f4f1591f00241f30da7090e6002c3e489ad3a7a731a7d2b74472c75eb93f0"`
[INFO] [stdout] 8f4f4f1591f00241f30da7090e6002c3e489ad3a7a731a7d2b74472c75eb93f0