[INFO] crate rust-unify 0.1.0 is already in cache
[INFO] extracting crate rust-unify 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/rust-unify/0.1.0
[INFO] extracting crate rust-unify 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rust-unify/0.1.0
[INFO] validating manifest of rust-unify-0.1.0 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 rust-unify-0.1.0 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 rust-unify-0.1.0
[INFO] finished frobbing rust-unify-0.1.0
[INFO] frobbed toml for rust-unify-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/rust-unify/0.1.0/Cargo.toml
[INFO] started frobbing rust-unify-0.1.0
[INFO] finished frobbing rust-unify-0.1.0
[INFO] frobbed toml for rust-unify-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rust-unify/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 rust-unify-0.1.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/rust-unify/0.1.0:/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] df0fcb7b4547192b386198ef98ba4ab40d314cea04b4e08cd735567ba4d4d63f
[INFO] running `"docker" "start" "-a" "df0fcb7b4547192b386198ef98ba4ab40d314cea04b4e08cd735567ba4d4d63f"`
[INFO] [stderr]     Checking rust-unify v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/robinsons.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 | /         match t {
[INFO] [stderr] 18 | |             &Term::Variable(_) => vec![t],
[INFO] [stderr] 19 | |             &Term::Composite(_, ref terms) => {
[INFO] [stderr] 20 | |                 let mut v = vec![];
[INFO] [stderr] ...  |
[INFO] [stderr] 26 | |             _ => vec![],
[INFO] [stderr] 27 | |         }
[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] 17 |         match *t {
[INFO] [stderr] 18 |             Term::Variable(_) => vec![t],
[INFO] [stderr] 19 |             Term::Composite(_, ref terms) => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/robinsons.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 |             s = subs.get(&s).unwrap()
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^ help: try this: `&subs[&s]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/robinsons.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |             t = subs.get(&t).unwrap()
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^ help: try this: `&subs[&t]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 | /         match self {
[INFO] [stderr] 20 | |             &Term::Variable(ref name) => write!(f, "{}", name),
[INFO] [stderr] 21 | |             &Term::Constant(ref value) => write!(f, "{}", value),
[INFO] [stderr] 22 | |             &Term::Composite(ref name, ref terms) => {
[INFO] [stderr] ...  |
[INFO] [stderr] 26 | |             }
[INFO] [stderr] 27 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[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] 19 |         match *self {
[INFO] [stderr] 20 |             Term::Variable(ref name) => write!(f, "{}", name),
[INFO] [stderr] 21 |             Term::Constant(ref value) => write!(f, "{}", value),
[INFO] [stderr] 22 |             Term::Composite(ref name, ref terms) => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/robinsons.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 | /         match t {
[INFO] [stderr] 18 | |             &Term::Variable(_) => vec![t],
[INFO] [stderr] 19 | |             &Term::Composite(_, ref terms) => {
[INFO] [stderr] 20 | |                 let mut v = vec![];
[INFO] [stderr] ...  |
[INFO] [stderr] 26 | |             _ => vec![],
[INFO] [stderr] 27 | |         }
[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] 17 |         match *t {
[INFO] [stderr] 18 |             Term::Variable(_) => vec![t],
[INFO] [stderr] 19 |             Term::Composite(_, ref terms) => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/robinsons.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 |             s = subs.get(&s).unwrap()
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^ help: try this: `&subs[&s]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/robinsons.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |             t = subs.get(&t).unwrap()
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^ help: try this: `&subs[&t]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 | /         match self {
[INFO] [stderr] 20 | |             &Term::Variable(ref name) => write!(f, "{}", name),
[INFO] [stderr] 21 | |             &Term::Constant(ref value) => write!(f, "{}", value),
[INFO] [stderr] 22 | |             &Term::Composite(ref name, ref terms) => {
[INFO] [stderr] ...  |
[INFO] [stderr] 26 | |             }
[INFO] [stderr] 27 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[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] 19 |         match *self {
[INFO] [stderr] 20 |             Term::Variable(ref name) => write!(f, "{}", name),
[INFO] [stderr] 21 |             Term::Constant(ref value) => write!(f, "{}", value),
[INFO] [stderr] 22 |             Term::Composite(ref name, ref terms) => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "df0fcb7b4547192b386198ef98ba4ab40d314cea04b4e08cd735567ba4d4d63f"`
[INFO] running `"docker" "rm" "-f" "df0fcb7b4547192b386198ef98ba4ab40d314cea04b4e08cd735567ba4d4d63f"`
[INFO] [stdout] df0fcb7b4547192b386198ef98ba4ab40d314cea04b4e08cd735567ba4d4d63f