[INFO] updating cached repository qingxiang-jia/learn-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/qingxiang-jia/learn-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/qingxiang-jia/learn-rust" "work/ex/clippy-test-run/sources/stable/gh/qingxiang-jia/learn-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/qingxiang-jia/learn-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/qingxiang-jia/learn-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/qingxiang-jia/learn-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/qingxiang-jia/learn-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7a5d82ab7d8a21c1f2d7f96fda45dd273c842694
[INFO] sha for GitHub repo qingxiang-jia/learn-rust: 7a5d82ab7d8a21c1f2d7f96fda45dd273c842694
[INFO] validating manifest of qingxiang-jia/learn-rust 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 qingxiang-jia/learn-rust 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 qingxiang-jia/learn-rust
[INFO] finished frobbing qingxiang-jia/learn-rust
[INFO] frobbed toml for qingxiang-jia/learn-rust written to work/ex/clippy-test-run/sources/stable/gh/qingxiang-jia/learn-rust/Cargo.toml
[INFO] started frobbing qingxiang-jia/learn-rust
[INFO] finished frobbing qingxiang-jia/learn-rust
[INFO] frobbed toml for qingxiang-jia/learn-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/qingxiang-jia/learn-rust/Cargo.toml
[INFO] crate qingxiang-jia/learn-rust has a lockfile. skipping
[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 qingxiang-jia/learn-rust 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/gh/qingxiang-jia/learn-rust:/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] a1c7a162f55d300d8ba76de53cf21354960dce955b7845acb8d067eff9a48f8d
[INFO] running `"docker" "start" "-a" "a1c7a162f55d300d8ba76de53cf21354960dce955b7845acb8d067eff9a48f8d"`
[INFO] [stderr]     Checking learn_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/udp_lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | /     return match send_result {
[INFO] [stderr] 12 | |         Ok(v) => v,
[INFO] [stderr] 13 | |         Err(_e) => 0,
[INFO] [stderr] 14 | |     };
[INFO] [stderr]    | |______^
[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] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 11 |     match send_result {
[INFO] [stderr] 12 |         Ok(v) => v,
[INFO] [stderr] 13 |         Err(_e) => 0,
[INFO] [stderr] 14 |     }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/udp_lib.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     return match recv_result {
[INFO] [stderr] 26 | |         Ok(_v) => {
[INFO] [stderr] 27 | |             let str_recv = match str::from_utf8(&buf[..]) {
[INFO] [stderr] 28 | |                 Ok(_vv) => String::from(_vv),
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         Err(_e) => String::from(""),
[INFO] [stderr] 34 | |     };
[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] 25 |     match recv_result {
[INFO] [stderr] 26 |         Ok(_v) => {
[INFO] [stderr] 27 |             let str_recv = match str::from_utf8(&buf[..]) {
[INFO] [stderr] 28 |                 Ok(_vv) => String::from(_vv),
[INFO] [stderr] 29 |                 Err(_ee) => String::from(""),
[INFO] [stderr] 30 |             };
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/udp_lib.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |             String::from(str_recv)
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `str_recv`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/udp_lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | /     return match send_result {
[INFO] [stderr] 12 | |         Ok(v) => v,
[INFO] [stderr] 13 | |         Err(_e) => 0,
[INFO] [stderr] 14 | |     };
[INFO] [stderr]    | |______^
[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] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 11 |     match send_result {
[INFO] [stderr] 12 |         Ok(v) => v,
[INFO] [stderr] 13 |         Err(_e) => 0,
[INFO] [stderr] 14 |     }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/udp_lib.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     return match recv_result {
[INFO] [stderr] 26 | |         Ok(_v) => {
[INFO] [stderr] 27 | |             let str_recv = match str::from_utf8(&buf[..]) {
[INFO] [stderr] 28 | |                 Ok(_vv) => String::from(_vv),
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         Err(_e) => String::from(""),
[INFO] [stderr] 34 | |     };
[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] 25 |     match recv_result {
[INFO] [stderr] 26 |         Ok(_v) => {
[INFO] [stderr] 27 |             let str_recv = match str::from_utf8(&buf[..]) {
[INFO] [stderr] 28 |                 Ok(_vv) => String::from(_vv),
[INFO] [stderr] 29 |                 Err(_ee) => String::from(""),
[INFO] [stderr] 30 |             };
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/udp_lib.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |             String::from(str_recv)
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `str_recv`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.81s
[INFO] running `"docker" "inspect" "a1c7a162f55d300d8ba76de53cf21354960dce955b7845acb8d067eff9a48f8d"`
[INFO] running `"docker" "rm" "-f" "a1c7a162f55d300d8ba76de53cf21354960dce955b7845acb8d067eff9a48f8d"`
[INFO] [stdout] a1c7a162f55d300d8ba76de53cf21354960dce955b7845acb8d067eff9a48f8d