[INFO] updating cached repository barrelll/cl
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/barrelll/cl
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/barrelll/cl" "work/ex/clippy-test-run/sources/stable/gh/barrelll/cl"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/barrelll/cl'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/barrelll/cl" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/barrelll/cl"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/barrelll/cl'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2575eea9a81b5258f7ebe8483d7a4d89fd7889eb
[INFO] sha for GitHub repo barrelll/cl: 2575eea9a81b5258f7ebe8483d7a4d89fd7889eb
[INFO] validating manifest of barrelll/cl 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 barrelll/cl 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 barrelll/cl
[INFO] finished frobbing barrelll/cl
[INFO] frobbed toml for barrelll/cl written to work/ex/clippy-test-run/sources/stable/gh/barrelll/cl/Cargo.toml
[INFO] started frobbing barrelll/cl
[INFO] finished frobbing barrelll/cl
[INFO] frobbed toml for barrelll/cl written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/barrelll/cl/Cargo.toml
[INFO] crate barrelll/cl 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 barrelll/cl 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/gh/barrelll/cl:/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] 8062da4141eeb49723ef8f78c41d27eaa8f118feba35d3a4ebcb243864ccf261
[INFO] running `"docker" "start" "-a" "8062da4141eeb49723ef8f78c41d27eaa8f118feba35d3a4ebcb243864ccf261"`
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking shared_library v0.1.6
[INFO] [stderr]     Checking num-complex v0.1.40
[INFO] [stderr]     Checking url v1.5.1
[INFO] [stderr]     Checking winit v0.5.11
[INFO] [stderr]     Checking ash v0.15.8
[INFO] [stderr]     Checking num-bigint v0.1.40
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking hyper v0.10.12
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]     Checking num v0.1.39
[INFO] [stderr]     Checking hyper-native-tls v0.2.4
[INFO] [stderr]     Checking learner v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let output = data.learn(2, &mut layers); // this one is Bob.
[INFO] [stderr]   |         ^^^^^^ help: consider using `_output` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `i` is used as a loop counter. Consider using `for (i, item) in &layers.i.enumerate()` or similar iterators
[INFO] [stderr]   --> src/testing.rs:89:21
[INFO] [stderr]    |
[INFO] [stderr] 89 |         for node in &layers.i {
[INFO] [stderr]    |                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `n` is used as a loop counter. Consider using `for (n, item) in node.enumerate()` or similar iterators
[INFO] [stderr]   --> src/testing.rs:94:27
[INFO] [stderr]    |
[INFO] [stderr] 94 |             for weight in node {
[INFO] [stderr]    |                           ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let output = data.learn(2, &mut layers); // this one is Bob.
[INFO] [stderr]   |         ^^^^^^ help: consider using `_output` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `i` is used as a loop counter. Consider using `for (i, item) in &layers.i.enumerate()` or similar iterators
[INFO] [stderr]   --> src/testing.rs:89:21
[INFO] [stderr]    |
[INFO] [stderr] 89 |         for node in &layers.i {
[INFO] [stderr]    |                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `n` is used as a loop counter. Consider using `for (n, item) in node.enumerate()` or similar iterators
[INFO] [stderr]   --> src/testing.rs:94:27
[INFO] [stderr]    |
[INFO] [stderr] 94 |             for weight in node {
[INFO] [stderr]    |                           ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.15s
[INFO] running `"docker" "inspect" "8062da4141eeb49723ef8f78c41d27eaa8f118feba35d3a4ebcb243864ccf261"`
[INFO] running `"docker" "rm" "-f" "8062da4141eeb49723ef8f78c41d27eaa8f118feba35d3a4ebcb243864ccf261"`
[INFO] [stdout] 8062da4141eeb49723ef8f78c41d27eaa8f118feba35d3a4ebcb243864ccf261