Dec 11 17:35:01.855 INFO checking hasanhaja/rust_book_workthrough against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 17:35:01.855 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 17:35:02.338 INFO [stdout] b3757ac8555283a494819e00ff36d58138afd466400556a8c79a0a7bb4b24c83
Dec 11 17:35:02.344 INFO running `"docker" "start" "-a" "b3757ac8555283a494819e00ff36d58138afd466400556a8c79a0a7bb4b24c83"`
Dec 11 17:35:03.932 INFO [stderr] usermod: no changes
Dec 11 17:35:04.052 INFO [stderr]     Checking rust_book_workthrough v0.1.0 (/source)
Dec 11 17:35:04.668 INFO [stderr] warning: unused variable: `item`
Dec 11 17:35:04.668 INFO [stderr]   --> src/generics.rs:68:17
Dec 11 17:35:04.668 INFO [stderr]    |
Dec 11 17:35:04.668 INFO [stderr] 68 | fn notify_mult1(item: impl Summary + Display) { // Placeholder
Dec 11 17:35:04.668 INFO [stderr]    |                 ^^^^ help: consider using `_item` instead
Dec 11 17:35:04.668 INFO [stderr]    |
Dec 11 17:35:04.668 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 17:35:04.668 INFO [stderr] 
Dec 11 17:35:04.668 INFO [stderr] warning: unused variable: `item`
Dec 11 17:35:04.668 INFO [stderr]   --> src/generics.rs:71:39
Dec 11 17:35:04.668 INFO [stderr]    |
Dec 11 17:35:04.668 INFO [stderr] 71 | fn notify_mult2<T: Summary + Display>(item: T) {
Dec 11 17:35:04.668 INFO [stderr]    |                                       ^^^^ help: consider using `_item` instead
Dec 11 17:35:04.668 INFO [stderr] 
Dec 11 17:35:04.668 INFO [stderr] warning: unused variable: `t`
Dec 11 17:35:04.669 INFO [stderr]   --> src/generics.rs:75:51
Dec 11 17:35:04.669 INFO [stderr]    |
Dec 11 17:35:04.669 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 11 17:35:04.669 INFO [stderr]    |                                                   ^ help: consider using `_t` instead
Dec 11 17:35:04.669 INFO [stderr] 
Dec 11 17:35:04.669 INFO [stderr] warning: unused variable: `u`
Dec 11 17:35:04.669 INFO [stderr]   --> src/generics.rs:75:57
Dec 11 17:35:04.669 INFO [stderr]    |
Dec 11 17:35:04.669 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 11 17:35:04.669 INFO [stderr]    |                                                         ^ help: consider using `_u` instead
Dec 11 17:35:04.669 INFO [stderr] 
Dec 11 17:35:04.669 INFO [stderr] warning: unused variable: `t`
Dec 11 17:35:04.669 INFO [stderr]   --> src/generics.rs:80:19
Dec 11 17:35:04.669 INFO [stderr]    |
Dec 11 17:35:04.669 INFO [stderr] 80 | fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 11 17:35:04.669 INFO [stderr]    |                   ^ help: consider using `_t` instead
Dec 11 17:35:04.669 INFO [stderr] 
Dec 11 17:35:04.669 INFO [stderr] warning: unused variable: `u`
Dec 11 17:35:04.669 INFO [stderr]   --> src/generics.rs:80:25
Dec 11 17:35:04.669 INFO [stderr]    |
Dec 11 17:35:04.669 INFO [stderr] 80 | fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 11 17:35:04.669 INFO [stderr]    |                         ^ help: consider using `_u` instead
Dec 11 17:35:04.669 INFO [stderr] 
Dec 11 17:35:04.706 INFO [stderr] warning: field is never used: `y`
Dec 11 17:35:04.706 INFO [stderr]   --> src/generics.rs:37:5
Dec 11 17:35:04.706 INFO [stderr]    |
Dec 11 17:35:04.706 INFO [stderr] 37 |     y: T,
Dec 11 17:35:04.706 INFO [stderr]    |     ^^^^
Dec 11 17:35:04.706 INFO [stderr]    |
Dec 11 17:35:04.706 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 17:35:04.706 INFO [stderr] 
Dec 11 17:35:04.706 INFO [stderr] warning: method is never used: `distance_from_origin`
Dec 11 17:35:04.707 INFO [stderr]   --> src/generics.rs:53:5
Dec 11 17:35:04.707 INFO [stderr]    |
Dec 11 17:35:04.707 INFO [stderr] 53 |     pub fn distance_from_origin(&self) -> f32 {
Dec 11 17:35:04.707 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 17:35:04.707 INFO [stderr] 
Dec 11 17:35:04.707 INFO [stderr] warning: function is never used: `notify_mult1`
Dec 11 17:35:04.707 INFO [stderr]   --> src/generics.rs:68:1
Dec 11 17:35:04.707 INFO [stderr]    |
Dec 11 17:35:04.707 INFO [stderr] 68 | fn notify_mult1(item: impl Summary + Display) { // Placeholder
Dec 11 17:35:04.707 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 17:35:04.707 INFO [stderr] 
Dec 11 17:35:04.707 INFO [stderr] warning: function is never used: `notify_mult2`
Dec 11 17:35:04.707 INFO [stderr]   --> src/generics.rs:71:1
Dec 11 17:35:04.707 INFO [stderr]    |
Dec 11 17:35:04.707 INFO [stderr] 71 | fn notify_mult2<T: Summary + Display>(item: T) {
Dec 11 17:35:04.707 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 17:35:04.707 INFO [stderr] 
Dec 11 17:35:04.707 INFO [stderr] warning: function is never used: `some_fn1`
Dec 11 17:35:04.707 INFO [stderr]   --> src/generics.rs:75:1
Dec 11 17:35:04.707 INFO [stderr]    |
Dec 11 17:35:04.707 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 11 17:35:04.707 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 17:35:04.707 INFO [stderr] 
Dec 11 17:35:04.707 INFO [stderr] warning: function is never used: `some_fn2`
Dec 11 17:35:04.707 INFO [stderr]   --> src/generics.rs:80:1
Dec 11 17:35:04.707 INFO [stderr]    |
Dec 11 17:35:04.707 INFO [stderr] 80 | / fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 11 17:35:04.707 INFO [stderr] 81 | |     where T: Display + Clone,
Dec 11 17:35:04.707 INFO [stderr] 82 | |           U: Clone + Debug
Dec 11 17:35:04.707 INFO [stderr] 83 | | {
Dec 11 17:35:04.707 INFO [stderr] 84 | |     // Placeholder
Dec 11 17:35:04.707 INFO [stderr] 85 | |     0
Dec 11 17:35:04.707 INFO [stderr] 86 | | }
Dec 11 17:35:04.707 INFO [stderr]    | |_^
Dec 11 17:35:04.707 INFO [stderr] 
Dec 11 17:35:04.707 INFO [stderr] warning: struct is never constructed: `NewsArticle`
Dec 11 17:35:04.707 INFO [stderr]    --> src/generics.rs:104:1
Dec 11 17:35:04.707 INFO [stderr]     |
Dec 11 17:35:04.707 INFO [stderr] 104 | pub struct NewsArticle {
Dec 11 17:35:04.707 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Dec 11 17:35:04.707 INFO [stderr] 
Dec 11 17:35:04.840 INFO [stderr] warning: unused variable: `item`
Dec 11 17:35:04.840 INFO [stderr]   --> src/generics.rs:68:17
Dec 11 17:35:04.840 INFO [stderr]    |
Dec 11 17:35:04.840 INFO [stderr] 68 | fn notify_mult1(item: impl Summary + Display) { // Placeholder
Dec 11 17:35:04.840 INFO [stderr]    |                 ^^^^ help: consider using `_item` instead
Dec 11 17:35:04.840 INFO [stderr]    |
Dec 11 17:35:04.840 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 17:35:04.840 INFO [stderr] 
Dec 11 17:35:04.840 INFO [stderr] warning: unused variable: `item`
Dec 11 17:35:04.840 INFO [stderr]   --> src/generics.rs:71:39
Dec 11 17:35:04.840 INFO [stderr]    |
Dec 11 17:35:04.840 INFO [stderr] 71 | fn notify_mult2<T: Summary + Display>(item: T) {
Dec 11 17:35:04.840 INFO [stderr]    |                                       ^^^^ help: consider using `_item` instead
Dec 11 17:35:04.840 INFO [stderr] 
Dec 11 17:35:04.840 INFO [stderr] warning: unused variable: `t`
Dec 11 17:35:04.840 INFO [stderr]   --> src/generics.rs:75:51
Dec 11 17:35:04.840 INFO [stderr]    |
Dec 11 17:35:04.840 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 11 17:35:04.840 INFO [stderr]    |                                                   ^ help: consider using `_t` instead
Dec 11 17:35:04.841 INFO [stderr] 
Dec 11 17:35:04.841 INFO [stderr] warning: unused variable: `u`
Dec 11 17:35:04.841 INFO [stderr]   --> src/generics.rs:75:57
Dec 11 17:35:04.841 INFO [stderr]    |
Dec 11 17:35:04.841 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 11 17:35:04.841 INFO [stderr]    |                                                         ^ help: consider using `_u` instead
Dec 11 17:35:04.841 INFO [stderr] 
Dec 11 17:35:04.841 INFO [stderr] warning: unused variable: `t`
Dec 11 17:35:04.841 INFO [stderr]   --> src/generics.rs:80:19
Dec 11 17:35:04.841 INFO [stderr]    |
Dec 11 17:35:04.841 INFO [stderr] 80 | fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 11 17:35:04.841 INFO [stderr]    |                   ^ help: consider using `_t` instead
Dec 11 17:35:04.841 INFO [stderr] 
Dec 11 17:35:04.841 INFO [stderr] warning: unused variable: `u`
Dec 11 17:35:04.841 INFO [stderr]   --> src/generics.rs:80:25
Dec 11 17:35:04.841 INFO [stderr]    |
Dec 11 17:35:04.841 INFO [stderr] 80 | fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 11 17:35:04.841 INFO [stderr]    |                         ^ help: consider using `_u` instead
Dec 11 17:35:04.841 INFO [stderr] 
Dec 11 17:35:04.856 INFO [stderr] warning: field is never used: `y`
Dec 11 17:35:04.856 INFO [stderr]   --> src/generics.rs:37:5
Dec 11 17:35:04.856 INFO [stderr]    |
Dec 11 17:35:04.856 INFO [stderr] 37 |     y: T,
Dec 11 17:35:04.856 INFO [stderr]    |     ^^^^
Dec 11 17:35:04.856 INFO [stderr]    |
Dec 11 17:35:04.856 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 17:35:04.856 INFO [stderr] 
Dec 11 17:35:04.856 INFO [stderr] warning: method is never used: `distance_from_origin`
Dec 11 17:35:04.856 INFO [stderr]   --> src/generics.rs:53:5
Dec 11 17:35:04.856 INFO [stderr]    |
Dec 11 17:35:04.856 INFO [stderr] 53 |     pub fn distance_from_origin(&self) -> f32 {
Dec 11 17:35:04.856 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 17:35:04.856 INFO [stderr] 
Dec 11 17:35:04.856 INFO [stderr] warning: function is never used: `notify_mult1`
Dec 11 17:35:04.856 INFO [stderr]   --> src/generics.rs:68:1
Dec 11 17:35:04.856 INFO [stderr]    |
Dec 11 17:35:04.856 INFO [stderr] 68 | fn notify_mult1(item: impl Summary + Display) { // Placeholder
Dec 11 17:35:04.856 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 17:35:04.857 INFO [stderr] 
Dec 11 17:35:04.857 INFO [stderr] warning: function is never used: `notify_mult2`
Dec 11 17:35:04.857 INFO [stderr]   --> src/generics.rs:71:1
Dec 11 17:35:04.857 INFO [stderr]    |
Dec 11 17:35:04.857 INFO [stderr] 71 | fn notify_mult2<T: Summary + Display>(item: T) {
Dec 11 17:35:04.857 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 17:35:04.857 INFO [stderr] 
Dec 11 17:35:04.857 INFO [stderr] warning: function is never used: `some_fn1`
Dec 11 17:35:04.857 INFO [stderr]   --> src/generics.rs:75:1
Dec 11 17:35:04.857 INFO [stderr]    |
Dec 11 17:35:04.857 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 11 17:35:04.857 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 17:35:04.857 INFO [stderr] 
Dec 11 17:35:04.857 INFO [stderr] warning: function is never used: `some_fn2`
Dec 11 17:35:04.857 INFO [stderr]   --> src/generics.rs:80:1
Dec 11 17:35:04.857 INFO [stderr]    |
Dec 11 17:35:04.857 INFO [stderr] 80 | / fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 11 17:35:04.868 INFO [stderr] 81 | |     where T: Display + Clone,
Dec 11 17:35:04.868 INFO [stderr] 82 | |           U: Clone + Debug
Dec 11 17:35:04.868 INFO [stderr] 83 | | {
Dec 11 17:35:04.868 INFO [stderr] 84 | |     // Placeholder
Dec 11 17:35:04.868 INFO [stderr] 85 | |     0
Dec 11 17:35:04.868 INFO [stderr] 86 | | }
Dec 11 17:35:04.868 INFO [stderr]    | |_^
Dec 11 17:35:04.868 INFO [stderr] 
Dec 11 17:35:04.868 INFO [stderr] warning: struct is never constructed: `NewsArticle`
Dec 11 17:35:04.868 INFO [stderr]    --> src/generics.rs:104:1
Dec 11 17:35:04.868 INFO [stderr]     |
Dec 11 17:35:04.868 INFO [stderr] 104 | pub struct NewsArticle {
Dec 11 17:35:04.868 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Dec 11 17:35:04.868 INFO [stderr] 
Dec 11 17:35:04.884 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
Dec 11 17:35:04.884 INFO [stderr] su: No module specific data is present
Dec 11 17:35:06.072 INFO running `"docker" "inspect" "b3757ac8555283a494819e00ff36d58138afd466400556a8c79a0a7bb4b24c83"`
Dec 11 17:35:06.348 INFO running `"docker" "rm" "-f" "b3757ac8555283a494819e00ff36d58138afd466400556a8c79a0a7bb4b24c83"`
Dec 11 17:35:06.684 INFO [stdout] b3757ac8555283a494819e00ff36d58138afd466400556a8c79a0a7bb4b24c83