[INFO] updating cached repository siiptuo/lambda
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/siiptuo/lambda
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/siiptuo/lambda" "work/ex/clippy-test-run/sources/stable/gh/siiptuo/lambda"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/siiptuo/lambda'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/siiptuo/lambda" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/siiptuo/lambda"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/siiptuo/lambda'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 91420bdd99be25c1eaa705f71f914cb1799f5585
[INFO] sha for GitHub repo siiptuo/lambda: 91420bdd99be25c1eaa705f71f914cb1799f5585
[INFO] validating manifest of siiptuo/lambda 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 siiptuo/lambda 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 siiptuo/lambda
[INFO] finished frobbing siiptuo/lambda
[INFO] frobbed toml for siiptuo/lambda written to work/ex/clippy-test-run/sources/stable/gh/siiptuo/lambda/Cargo.toml
[INFO] started frobbing siiptuo/lambda
[INFO] finished frobbing siiptuo/lambda
[INFO] frobbed toml for siiptuo/lambda written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/siiptuo/lambda/Cargo.toml
[INFO] crate siiptuo/lambda 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 siiptuo/lambda against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/siiptuo/lambda:/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] 4e84c402d572c6521a23cb9e906e33c1565b808fb8a8656e1f658c4d88988038
[INFO] running `"docker" "start" "-a" "4e84c402d572c6521a23cb9e906e33c1565b808fb8a8656e1f658c4d88988038"`
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking lambda v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/lexer.rs:27:31
[INFO] [stderr]    |
[INFO] [stderr] 27 |                         match self.0.peek().map(|c| *c) {
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `self.0.peek().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/parser.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 | /     match lexer.peek().ok_or("eof".to_string())? {
[INFO] [stderr] 43 | |         // Parse abstraction
[INFO] [stderr] 44 | |         &Token::Lambda => {
[INFO] [stderr] 45 | |             lexer.next().unwrap();
[INFO] [stderr] ...  |
[INFO] [stderr] 56 | |         }
[INFO] [stderr] 57 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 42 |     match *(lexer.peek().ok_or("eof".to_string())?) {
[INFO] [stderr] 43 |         // Parse abstraction
[INFO] [stderr] 44 |         Token::Lambda => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]   --> src/parser.rs:42:24
[INFO] [stderr]    |
[INFO] [stderr] 42 |     match lexer.peek().ok_or("eof".to_string())? {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| "eof".to_string())`
[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: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/substitute.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 |         App(M, N) => free(M).union(&free(N)).map(|x| x.clone()).collect(),
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `free(M).union(&free(N)).cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/lexer.rs:27:31
[INFO] [stderr]    |
[INFO] [stderr] 27 |                         match self.0.peek().map(|c| *c) {
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `self.0.peek().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/parser.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 | /     match lexer.peek().ok_or("eof".to_string())? {
[INFO] [stderr] 43 | |         // Parse abstraction
[INFO] [stderr] 44 | |         &Token::Lambda => {
[INFO] [stderr] 45 | |             lexer.next().unwrap();
[INFO] [stderr] ...  |
[INFO] [stderr] 56 | |         }
[INFO] [stderr] 57 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 42 |     match *(lexer.peek().ok_or("eof".to_string())?) {
[INFO] [stderr] 43 |         // Parse abstraction
[INFO] [stderr] 44 |         Token::Lambda => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]   --> src/parser.rs:42:24
[INFO] [stderr]    |
[INFO] [stderr] 42 |     match lexer.peek().ok_or("eof".to_string())? {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| "eof".to_string())`
[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: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/substitute.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 |         App(M, N) => free(M).union(&free(N)).map(|x| x.clone()).collect(),
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `free(M).union(&free(N)).cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.28s
[INFO] running `"docker" "inspect" "4e84c402d572c6521a23cb9e906e33c1565b808fb8a8656e1f658c4d88988038"`
[INFO] running `"docker" "rm" "-f" "4e84c402d572c6521a23cb9e906e33c1565b808fb8a8656e1f658c4d88988038"`
[INFO] [stdout] 4e84c402d572c6521a23cb9e906e33c1565b808fb8a8656e1f658c4d88988038