[INFO] updating cached repository n3phtys/multipi
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/n3phtys/multipi
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/n3phtys/multipi" "work/ex/clippy-test-run/sources/stable/gh/n3phtys/multipi"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/n3phtys/multipi'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/n3phtys/multipi" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/n3phtys/multipi"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/n3phtys/multipi'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 13abd95424e38becc3f0d7f62c6bbf52cd4594c4
[INFO] sha for GitHub repo n3phtys/multipi: 13abd95424e38becc3f0d7f62c6bbf52cd4594c4
[INFO] validating manifest of n3phtys/multipi 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 n3phtys/multipi 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 n3phtys/multipi
[INFO] finished frobbing n3phtys/multipi
[INFO] frobbed toml for n3phtys/multipi written to work/ex/clippy-test-run/sources/stable/gh/n3phtys/multipi/Cargo.toml
[INFO] started frobbing n3phtys/multipi
[INFO] finished frobbing n3phtys/multipi
[INFO] frobbed toml for n3phtys/multipi written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/n3phtys/multipi/Cargo.toml
[INFO] crate n3phtys/multipi 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 n3phtys/multipi 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/n3phtys/multipi:/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] 2b7307249daece7eaa603e66912eaf9c8bbe30645a5dc82383f1df98dbd7fdb2
[INFO] running `"docker" "start" "-a" "2b7307249daece7eaa603e66912eaf9c8bbe30645a5dc82383f1df98dbd7fdb2"`
[INFO] [stderr]     Checking serde_json v1.0.22
[INFO] [stderr]     Checking multipi v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]  --> src/main.rs:6:18
[INFO] [stderr]   |
[INFO] [stderr] 6 | use serde_json::{Error, Value};
[INFO] [stderr]   |                  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]  --> src/main.rs:6:18
[INFO] [stderr]   |
[INFO] [stderr] 6 | use serde_json::{Error, Value};
[INFO] [stderr]   |                  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |         return "{'a':2, 'b':'hello world'}".to_string();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `"{'a':2, 'b':'hello world'}".to_string()`
[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: unused variable: `matches`
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let matches = App::new("Multipli")
[INFO] [stderr]    |         ^^^^^^^ help: consider using `_matches` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `json`
[INFO] [stderr]   --> src/main.rs:50:16
[INFO] [stderr]    |
[INFO] [stderr] 50 | pub fn multipi(json: &str) -> Value {
[INFO] [stderr]    |                ^^^^ help: consider using `_json` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let matches = App::new("Multipli")
[INFO] [stderr]    |         ^^^^^^^ help: consider using `_matches` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `json`
[INFO] [stderr]   --> src/main.rs:50:16
[INFO] [stderr]    |
[INFO] [stderr] 50 | pub fn multipi(json: &str) -> Value {
[INFO] [stderr]    |                ^^^^ help: consider using `_json` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.13s
[INFO] running `"docker" "inspect" "2b7307249daece7eaa603e66912eaf9c8bbe30645a5dc82383f1df98dbd7fdb2"`
[INFO] running `"docker" "rm" "-f" "2b7307249daece7eaa603e66912eaf9c8bbe30645a5dc82383f1df98dbd7fdb2"`
[INFO] [stdout] 2b7307249daece7eaa603e66912eaf9c8bbe30645a5dc82383f1df98dbd7fdb2