[INFO] updating cached repository hasanhaja/rust_book_workthrough [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/hasanhaja/rust_book_workthrough [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/hasanhaja/rust_book_workthrough" "work/ex/clippy-test-run/sources/stable/gh/hasanhaja/rust_book_workthrough"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/hasanhaja/rust_book_workthrough'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/hasanhaja/rust_book_workthrough" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/hasanhaja/rust_book_workthrough"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/hasanhaja/rust_book_workthrough'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] aad7dc5b9f2beaeeebde3869d510ed9992517039 [INFO] sha for GitHub repo hasanhaja/rust_book_workthrough: aad7dc5b9f2beaeeebde3869d510ed9992517039 [INFO] validating manifest of hasanhaja/rust_book_workthrough 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 hasanhaja/rust_book_workthrough 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 hasanhaja/rust_book_workthrough [INFO] finished frobbing hasanhaja/rust_book_workthrough [INFO] frobbed toml for hasanhaja/rust_book_workthrough written to work/ex/clippy-test-run/sources/stable/gh/hasanhaja/rust_book_workthrough/Cargo.toml [INFO] started frobbing hasanhaja/rust_book_workthrough [INFO] finished frobbing hasanhaja/rust_book_workthrough [INFO] frobbed toml for hasanhaja/rust_book_workthrough written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/hasanhaja/rust_book_workthrough/Cargo.toml [INFO] crate hasanhaja/rust_book_workthrough 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 hasanhaja/rust_book_workthrough 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/hasanhaja/rust_book_workthrough:/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] ce573d1ddfb294fc8b81770b2cf7be5c0252d389e4cc81bfaad4345b30c87d9d [INFO] running `"docker" "start" "-a" "ce573d1ddfb294fc8b81770b2cf7be5c0252d389e4cc81bfaad4345b30c87d9d"` [INFO] [stderr] Checking rust_book_workthrough v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused variable: `item` [INFO] [stderr] --> src/generics/mod.rs:70:17 [INFO] [stderr] | [INFO] [stderr] 70 | fn notify_mult1(item: impl Summary + Display) { // Placeholder [INFO] [stderr] | ^^^^ help: consider using `_item` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `item` [INFO] [stderr] --> src/generics/mod.rs:73:39 [INFO] [stderr] | [INFO] [stderr] 73 | fn notify_mult2(item: T) { [INFO] [stderr] | ^^^^ help: consider using `_item` instead [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/generics/mod.rs:77:51 [INFO] [stderr] | [INFO] [stderr] 77 | fn some_fn1(t: T, u: U) -> i32 { [INFO] [stderr] | ^ help: consider using `_t` instead [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/generics/mod.rs:77:57 [INFO] [stderr] | [INFO] [stderr] 77 | fn some_fn1(t: T, u: U) -> i32 { [INFO] [stderr] | ^ help: consider using `_u` instead [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/generics/mod.rs:82:19 [INFO] [stderr] | [INFO] [stderr] 82 | fn some_fn2(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: consider using `_t` instead [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/generics/mod.rs:82:25 [INFO] [stderr] | [INFO] [stderr] 82 | fn some_fn2(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: consider using `_u` instead [INFO] [stderr] [INFO] [stderr] warning: field is never used: `y` [INFO] [stderr] --> src/generics/mod.rs:39:5 [INFO] [stderr] | [INFO] [stderr] 39 | y: T, [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `distance_from_origin` [INFO] [stderr] --> src/generics/mod.rs:55:5 [INFO] [stderr] | [INFO] [stderr] 55 | pub fn distance_from_origin(&self) -> f32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `notify_mult1` [INFO] [stderr] --> src/generics/mod.rs:70:1 [INFO] [stderr] | [INFO] [stderr] 70 | fn notify_mult1(item: impl Summary + Display) { // Placeholder [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `notify_mult2` [INFO] [stderr] --> src/generics/mod.rs:73:1 [INFO] [stderr] | [INFO] [stderr] 73 | fn notify_mult2(item: T) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `some_fn1` [INFO] [stderr] --> src/generics/mod.rs:77:1 [INFO] [stderr] | [INFO] [stderr] 77 | fn some_fn1(t: T, u: U) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `some_fn2` [INFO] [stderr] --> src/generics/mod.rs:82:1 [INFO] [stderr] | [INFO] [stderr] 82 | / fn some_fn2(t: T, u: U) -> i32 [INFO] [stderr] 83 | | where T: Display + Clone, [INFO] [stderr] 84 | | U: Clone + Debug [INFO] [stderr] 85 | | { [INFO] [stderr] 86 | | // Placeholder [INFO] [stderr] 87 | | 0 [INFO] [stderr] 88 | | } [INFO] [stderr] | |_^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `NewsArticle` [INFO] [stderr] --> src/generics/mod.rs:106:1 [INFO] [stderr] | [INFO] [stderr] 106 | pub struct NewsArticle { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: useless use of `format!` [INFO] [stderr] --> src/generics/mod.rs:120:9 [INFO] [stderr] | [INFO] [stderr] 120 | format!("{}", self.author) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `self.author.to_string()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::useless_format)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused variable: `item` [INFO] [stderr] --> src/generics/mod.rs:70:17 [INFO] [stderr] | [INFO] [stderr] 70 | fn notify_mult1(item: impl Summary + Display) { // Placeholder [INFO] [stderr] | ^^^^ help: consider using `_item` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `item` [INFO] [stderr] --> src/generics/mod.rs:73:39 [INFO] [stderr] | [INFO] [stderr] 73 | fn notify_mult2(item: T) { [INFO] [stderr] | ^^^^ help: consider using `_item` instead [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/generics/mod.rs:77:51 [INFO] [stderr] | [INFO] [stderr] 77 | fn some_fn1(t: T, u: U) -> i32 { [INFO] [stderr] | ^ help: consider using `_t` instead [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/generics/mod.rs:77:57 [INFO] [stderr] | [INFO] [stderr] 77 | fn some_fn1(t: T, u: U) -> i32 { [INFO] [stderr] | ^ help: consider using `_u` instead [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/generics/mod.rs:82:19 [INFO] [stderr] | [INFO] [stderr] 82 | fn some_fn2(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: consider using `_t` instead [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/generics/mod.rs:82:25 [INFO] [stderr] | [INFO] [stderr] 82 | fn some_fn2(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: consider using `_u` instead [INFO] [stderr] [INFO] [stderr] warning: field is never used: `y` [INFO] [stderr] --> src/generics/mod.rs:39:5 [INFO] [stderr] | [INFO] [stderr] 39 | y: T, [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `distance_from_origin` [INFO] [stderr] --> src/generics/mod.rs:55:5 [INFO] [stderr] | [INFO] [stderr] 55 | pub fn distance_from_origin(&self) -> f32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `notify_mult1` [INFO] [stderr] --> src/generics/mod.rs:70:1 [INFO] [stderr] | [INFO] [stderr] 70 | fn notify_mult1(item: impl Summary + Display) { // Placeholder [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `notify_mult2` [INFO] [stderr] --> src/generics/mod.rs:73:1 [INFO] [stderr] | [INFO] [stderr] 73 | fn notify_mult2(item: T) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `some_fn1` [INFO] [stderr] --> src/generics/mod.rs:77:1 [INFO] [stderr] | [INFO] [stderr] 77 | fn some_fn1(t: T, u: U) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `some_fn2` [INFO] [stderr] --> src/generics/mod.rs:82:1 [INFO] [stderr] | [INFO] [stderr] 82 | / fn some_fn2(t: T, u: U) -> i32 [INFO] [stderr] 83 | | where T: Display + Clone, [INFO] [stderr] 84 | | U: Clone + Debug [INFO] [stderr] 85 | | { [INFO] [stderr] 86 | | // Placeholder [INFO] [stderr] 87 | | 0 [INFO] [stderr] 88 | | } [INFO] [stderr] | |_^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `NewsArticle` [INFO] [stderr] --> src/generics/mod.rs:106:1 [INFO] [stderr] | [INFO] [stderr] 106 | pub struct NewsArticle { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: useless use of `format!` [INFO] [stderr] --> src/generics/mod.rs:120:9 [INFO] [stderr] | [INFO] [stderr] 120 | format!("{}", self.author) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `self.author.to_string()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::useless_format)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.72s [INFO] running `"docker" "inspect" "ce573d1ddfb294fc8b81770b2cf7be5c0252d389e4cc81bfaad4345b30c87d9d"` [INFO] running `"docker" "rm" "-f" "ce573d1ddfb294fc8b81770b2cf7be5c0252d389e4cc81bfaad4345b30c87d9d"` [INFO] [stdout] ce573d1ddfb294fc8b81770b2cf7be5c0252d389e4cc81bfaad4345b30c87d9d