[INFO] updating cached repository markcol/scheme-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/markcol/scheme-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/markcol/scheme-rs" "work/ex/clippy-test-run/sources/stable/gh/markcol/scheme-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/markcol/scheme-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/markcol/scheme-rs" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/markcol/scheme-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/markcol/scheme-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4260fcce0f322bace042c7b50e55c3a2412658eb
[INFO] sha for GitHub repo markcol/scheme-rs: 4260fcce0f322bace042c7b50e55c3a2412658eb
[INFO] validating manifest of markcol/scheme-rs 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 markcol/scheme-rs 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 markcol/scheme-rs
[INFO] finished frobbing markcol/scheme-rs
[INFO] frobbed toml for markcol/scheme-rs written to work/ex/clippy-test-run/sources/stable/gh/markcol/scheme-rs/Cargo.toml
[INFO] started frobbing markcol/scheme-rs
[INFO] finished frobbing markcol/scheme-rs
[INFO] frobbed toml for markcol/scheme-rs written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/markcol/scheme-rs/Cargo.toml
[INFO] crate markcol/scheme-rs 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 markcol/scheme-rs 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/markcol/scheme-rs:/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] 041f1932817fe9a4ed5f75e505b4356dd63d5048f01193441127ab127ef9a991
[INFO] running `"docker" "start" "-a" "041f1932817fe9a4ed5f75e505b4356dd63d5048f01193441127ab127ef9a991"`
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking backtrace-sys v0.1.16
[INFO] [stderr]    Compiling syn v0.12.13
[INFO] [stderr]     Checking backtrace v0.3.5
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]    Compiling structopt-derive v0.2.4
[INFO] [stderr]     Checking structopt v0.2.4
[INFO] [stderr]     Checking scheme-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/repl.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |             return Some(line);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some(line)`
[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: unneeded return statement
[INFO] [stderr]   --> src/repl.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             return None;
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]    |
[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 `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/interpreter.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 | /         if self.values.contains_key(&key) {
[INFO] [stderr] 37 | |             Err(format_err!("Duplicate key: {}", key))
[INFO] [stderr] 38 | |         } else {
[INFO] [stderr] 39 | |             self.values.insert(key, value);
[INFO] [stderr] 40 | |             Ok(())
[INFO] [stderr] 41 | |         }
[INFO] [stderr]    | |_________^ help: consider using: `self.values.entry(key)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/interpreter.rs:59:24
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn get(&self, key: &String) -> Option<Value> {
[INFO] [stderr]    |                        ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/interpreter.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 | /         if self.values.contains_key(&key) {
[INFO] [stderr] 37 | |             Err(format_err!("Duplicate key: {}", key))
[INFO] [stderr] 38 | |         } else {
[INFO] [stderr] 39 | |             self.values.insert(key, value);
[INFO] [stderr] 40 | |             Ok(())
[INFO] [stderr] 41 | |         }
[INFO] [stderr]    | |_________^ help: consider using: `self.values.entry(key)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/interpreter.rs:59:24
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn get(&self, key: &String) -> Option<Value> {
[INFO] [stderr]    |                        ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.33s
[INFO] running `"docker" "inspect" "041f1932817fe9a4ed5f75e505b4356dd63d5048f01193441127ab127ef9a991"`
[INFO] running `"docker" "rm" "-f" "041f1932817fe9a4ed5f75e505b4356dd63d5048f01193441127ab127ef9a991"`
[INFO] [stdout] 041f1932817fe9a4ed5f75e505b4356dd63d5048f01193441127ab127ef9a991