[INFO] updating cached repository CasperGN/RustChain
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/CasperGN/RustChain
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/CasperGN/RustChain" "work/ex/clippy-test-run/sources/stable/gh/CasperGN/RustChain"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/CasperGN/RustChain'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CasperGN/RustChain" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/CasperGN/RustChain"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/CasperGN/RustChain'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d022d207eaf81e0b039170230b4c8d4363217bd2
[INFO] sha for GitHub repo CasperGN/RustChain: d022d207eaf81e0b039170230b4c8d4363217bd2
[INFO] validating manifest of CasperGN/RustChain 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 CasperGN/RustChain 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 CasperGN/RustChain
[INFO] finished frobbing CasperGN/RustChain
[INFO] frobbed toml for CasperGN/RustChain written to work/ex/clippy-test-run/sources/stable/gh/CasperGN/RustChain/Cargo.toml
[INFO] started frobbing CasperGN/RustChain
[INFO] finished frobbing CasperGN/RustChain
[INFO] frobbed toml for CasperGN/RustChain written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/CasperGN/RustChain/Cargo.toml
[INFO] crate CasperGN/RustChain 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 CasperGN/RustChain against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/CasperGN/RustChain:/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] 90b5192ebb4e3e5bb93630cd1c4bdf4d404aebe155048af6d94f14a97e9a7c68
[INFO] running `"docker" "start" "-a" "90b5192ebb4e3e5bb93630cd1c4bdf4d404aebe155048af6d94f14a97e9a7c68"`
[INFO] [stderr]     Checking digest v0.7.2
[INFO] [stderr]     Checking sha2 v0.7.0
[INFO] [stderr]     Checking RustChain v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `decode`
[INFO] [stderr]   --> src/main.rs:20:22
[INFO] [stderr]    |
[INFO] [stderr] 20 | use base64::{encode, decode};
[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:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     return "hash";
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `"hash"`
[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: `encVec`
[INFO] [stderr]   --> src/main.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let mut encVec: Vec<u8> = Vec::new();
[INFO] [stderr]    |             ^^^^^^ help: consider using `_encVec` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `newHashedBlock`
[INFO] [stderr]   --> src/main.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |     let newHashedBlock = generateHash(newBlockTup);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: consider using `_newHashedBlock` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let mut encVec: Vec<u8> = Vec::new();
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/main.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     index = index + 1;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^ help: replace it with: `index += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `decode`
[INFO] [stderr]   --> src/main.rs:20:22
[INFO] [stderr]    |
[INFO] [stderr] 20 | use base64::{encode, decode};
[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:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     return "hash";
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `"hash"`
[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: `encVec`
[INFO] [stderr]   --> src/main.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let mut encVec: Vec<u8> = Vec::new();
[INFO] [stderr]    |             ^^^^^^ help: consider using `_encVec` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `newHashedBlock`
[INFO] [stderr]   --> src/main.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |     let newHashedBlock = generateHash(newBlockTup);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: consider using `_newHashedBlock` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let mut encVec: Vec<u8> = Vec::new();
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/main.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     index = index + 1;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^ help: replace it with: `index += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.80s
[INFO] running `"docker" "inspect" "90b5192ebb4e3e5bb93630cd1c4bdf4d404aebe155048af6d94f14a97e9a7c68"`
[INFO] running `"docker" "rm" "-f" "90b5192ebb4e3e5bb93630cd1c4bdf4d404aebe155048af6d94f14a97e9a7c68"`
[INFO] [stdout] 90b5192ebb4e3e5bb93630cd1c4bdf4d404aebe155048af6d94f14a97e9a7c68