[INFO] updating cached repository psas/av4-fc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/psas/av4-fc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/psas/av4-fc" "work/ex/clippy-test-run/sources/stable/gh/psas/av4-fc"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/psas/av4-fc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/psas/av4-fc" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/psas/av4-fc"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/psas/av4-fc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b7596aa4dfe8604b9aceb4dab5d1bf46544ac562
[INFO] sha for GitHub repo psas/av4-fc: b7596aa4dfe8604b9aceb4dab5d1bf46544ac562
[INFO] validating manifest of psas/av4-fc 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 psas/av4-fc 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 psas/av4-fc
[INFO] finished frobbing psas/av4-fc
[INFO] frobbed toml for psas/av4-fc written to work/ex/clippy-test-run/sources/stable/gh/psas/av4-fc/Cargo.toml
[INFO] started frobbing psas/av4-fc
[INFO] finished frobbing psas/av4-fc
[INFO] frobbed toml for psas/av4-fc written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/psas/av4-fc/Cargo.toml
[INFO] crate psas/av4-fc 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 psas/av4-fc against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/psas/av4-fc:/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] 2e64ad0c7a7a08654b933c8ff2166c787b6d7f52dd1e43ae433edeb5b69cec33
[INFO] running `"docker" "start" "-a" "2e64ad0c7a7a08654b933c8ff2166c787b6d7f52dd1e43ae433edeb5b69cec33"`
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]     Checking nix v0.6.0
[INFO] [stderr]    Compiling tempdir v0.3.5
[INFO] [stderr]    Compiling skeptic v0.5.0
[INFO] [stderr]    Compiling i2cdev v0.3.1
[INFO] [stderr]     Checking mpu9150 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:84:17
[INFO] [stderr]    |
[INFO] [stderr] 84 |         accel: [(try!(rdr.read_i16::<BigEndian>()) as f32) / 16384.0,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 84 |         accel: [f32::from(match $ expr {
[INFO] [stderr] 85 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 86 | :: Err ( err ) => {
[INFO] [stderr] 87 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 88 | $ crate :: convert :: From :: from ( err ) ) } }) / 16384.0,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:85:17
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 (try!(rdr.read_i16::<BigEndian>()) as f32) / 16384.0,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 f32::from(match $ expr {
[INFO] [stderr] 86 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 87 | :: Err ( err ) => {
[INFO] [stderr] 88 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 89 | $ crate :: convert :: From :: from ( err ) ) } }) / 16384.0,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:86:17
[INFO] [stderr]    |
[INFO] [stderr] 86 |                 (try!(rdr.read_i16::<BigEndian>()) as f32) / 16384.0],
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 86 |                 f32::from(match $ expr {
[INFO] [stderr] 87 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 88 | :: Err ( err ) => {
[INFO] [stderr] 89 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 90 | $ crate :: convert :: From :: from ( err ) ) } }) / 16384.0],
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:87:15
[INFO] [stderr]    |
[INFO] [stderr] 87 |         temp: (try!(rdr.read_i16::<BigEndian>()) as f32) / 340.0 + 35.0,
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 87 |         temp: f32::from(match $ expr {
[INFO] [stderr] 88 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 89 | :: Err ( err ) => {
[INFO] [stderr] 90 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 91 | $ crate :: convert :: From :: from ( err ) ) } }) / 340.0 + 35.0,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:88:16
[INFO] [stderr]    |
[INFO] [stderr] 88 |         gyro: [(try!(rdr.read_i16::<BigEndian>()) as f32) / 131.0,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 88 |         gyro: [f32::from(match $ expr {
[INFO] [stderr] 89 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 90 | :: Err ( err ) => {
[INFO] [stderr] 91 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 92 | $ crate :: convert :: From :: from ( err ) ) } }) / 131.0,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:89:16
[INFO] [stderr]    |
[INFO] [stderr] 89 |                (try!(rdr.read_i16::<BigEndian>()) as f32) / 131.0,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 89 |                f32::from(match $ expr {
[INFO] [stderr] 90 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 91 | :: Err ( err ) => {
[INFO] [stderr] 92 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 93 | $ crate :: convert :: From :: from ( err ) ) } }) / 131.0,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:90:16
[INFO] [stderr]    |
[INFO] [stderr] 90 |                (try!(rdr.read_i16::<BigEndian>()) as f32) / 131.0],
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 90 |                f32::from(match $ expr {
[INFO] [stderr] 91 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 92 | :: Err ( err ) => {
[INFO] [stderr] 93 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 94 | $ crate :: convert :: From :: from ( err ) ) } }) / 131.0],
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/main.rs:97:10
[INFO] [stderr]    |
[INFO] [stderr] 97 |           .expect(&format!("Usage: {} /dev/i2c-?",
[INFO] [stderr]    |  __________^
[INFO] [stderr] 98 | |                          env::args().nth(0).unwrap_or("program".into())));
[INFO] [stderr]    | |_________________________________________________________________________^ help: try this: `unwrap_or_else(|| panic!("Usage: {} /dev/i2c-?", env::args().nth(0).unwrap_or("program".into())))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/main.rs:98:45
[INFO] [stderr]    |
[INFO] [stderr] 98 |                          env::args().nth(0).unwrap_or("program".into())));
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "program".into())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/main.rs:99:51
[INFO] [stderr]    |
[INFO] [stderr] 99 |     let mut bus = LinuxI2CDevice::new(&dev, 0x68).expect(&format!("opening {} failed", &dev));
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("opening {} failed", &dev))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:84:17
[INFO] [stderr]    |
[INFO] [stderr] 84 |         accel: [(try!(rdr.read_i16::<BigEndian>()) as f32) / 16384.0,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 84 |         accel: [f32::from(match $ expr {
[INFO] [stderr] 85 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 86 | :: Err ( err ) => {
[INFO] [stderr] 87 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 88 | $ crate :: convert :: From :: from ( err ) ) } }) / 16384.0,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:85:17
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 (try!(rdr.read_i16::<BigEndian>()) as f32) / 16384.0,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 f32::from(match $ expr {
[INFO] [stderr] 86 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 87 | :: Err ( err ) => {
[INFO] [stderr] 88 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 89 | $ crate :: convert :: From :: from ( err ) ) } }) / 16384.0,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:86:17
[INFO] [stderr]    |
[INFO] [stderr] 86 |                 (try!(rdr.read_i16::<BigEndian>()) as f32) / 16384.0],
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 86 |                 f32::from(match $ expr {
[INFO] [stderr] 87 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 88 | :: Err ( err ) => {
[INFO] [stderr] 89 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 90 | $ crate :: convert :: From :: from ( err ) ) } }) / 16384.0],
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:87:15
[INFO] [stderr]    |
[INFO] [stderr] 87 |         temp: (try!(rdr.read_i16::<BigEndian>()) as f32) / 340.0 + 35.0,
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 87 |         temp: f32::from(match $ expr {
[INFO] [stderr] 88 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 89 | :: Err ( err ) => {
[INFO] [stderr] 90 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 91 | $ crate :: convert :: From :: from ( err ) ) } }) / 340.0 + 35.0,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:88:16
[INFO] [stderr]    |
[INFO] [stderr] 88 |         gyro: [(try!(rdr.read_i16::<BigEndian>()) as f32) / 131.0,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 88 |         gyro: [f32::from(match $ expr {
[INFO] [stderr] 89 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 90 | :: Err ( err ) => {
[INFO] [stderr] 91 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 92 | $ crate :: convert :: From :: from ( err ) ) } }) / 131.0,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:89:16
[INFO] [stderr]    |
[INFO] [stderr] 89 |                (try!(rdr.read_i16::<BigEndian>()) as f32) / 131.0,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 89 |                f32::from(match $ expr {
[INFO] [stderr] 90 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 91 | :: Err ( err ) => {
[INFO] [stderr] 92 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 93 | $ crate :: convert :: From :: from ( err ) ) } }) / 131.0,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to f32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:90:16
[INFO] [stderr]    |
[INFO] [stderr] 90 |                (try!(rdr.read_i16::<BigEndian>()) as f32) / 131.0],
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 90 |                f32::from(match $ expr {
[INFO] [stderr] 91 | $ crate :: result :: Result :: Ok ( val ) => val , $ crate :: result :: Result
[INFO] [stderr] 92 | :: Err ( err ) => {
[INFO] [stderr] 93 | return $ crate :: result :: Result :: Err (
[INFO] [stderr] 94 | $ crate :: convert :: From :: from ( err ) ) } }) / 131.0],
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/main.rs:97:10
[INFO] [stderr]    |
[INFO] [stderr] 97 |           .expect(&format!("Usage: {} /dev/i2c-?",
[INFO] [stderr]    |  __________^
[INFO] [stderr] 98 | |                          env::args().nth(0).unwrap_or("program".into())));
[INFO] [stderr]    | |_________________________________________________________________________^ help: try this: `unwrap_or_else(|| panic!("Usage: {} /dev/i2c-?", env::args().nth(0).unwrap_or("program".into())))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/main.rs:98:45
[INFO] [stderr]    |
[INFO] [stderr] 98 |                          env::args().nth(0).unwrap_or("program".into())));
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "program".into())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/main.rs:99:51
[INFO] [stderr]    |
[INFO] [stderr] 99 |     let mut bus = LinuxI2CDevice::new(&dev, 0x68).expect(&format!("opening {} failed", &dev));
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("opening {} failed", &dev))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.76s
[INFO] running `"docker" "inspect" "2e64ad0c7a7a08654b933c8ff2166c787b6d7f52dd1e43ae433edeb5b69cec33"`
[INFO] running `"docker" "rm" "-f" "2e64ad0c7a7a08654b933c8ff2166c787b6d7f52dd1e43ae433edeb5b69cec33"`
[INFO] [stdout] 2e64ad0c7a7a08654b933c8ff2166c787b6d7f52dd1e43ae433edeb5b69cec33