Dec 13 17:45:35.196 INFO testing hasanhaja/rust_book_workthrough against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 17:45:35.196 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 13 17:45:35.693 INFO [stdout] 298bc9a9b52398b61b5ab0be86eab6caa61b7f26c8042ba3414df42af056a60d
Dec 13 17:45:35.695 INFO running `"docker" "start" "-a" "298bc9a9b52398b61b5ab0be86eab6caa61b7f26c8042ba3414df42af056a60d"`
Dec 13 17:45:37.014 INFO [stderr] usermod: no changes
Dec 13 17:45:37.111 INFO [stderr]    Compiling rust_book_workthrough v0.1.0 (/source)
Dec 13 17:45:37.595 INFO [stderr] warning: unused variable: `item`
Dec 13 17:45:37.595 INFO [stderr]   --> src/generics.rs:68:17
Dec 13 17:45:37.595 INFO [stderr]    |
Dec 13 17:45:37.595 INFO [stderr] 68 | fn notify_mult1(item: impl Summary + Display) { // Placeholder
Dec 13 17:45:37.595 INFO [stderr]    |                 ^^^^ help: consider using `_item` instead
Dec 13 17:45:37.595 INFO [stderr]    |
Dec 13 17:45:37.599 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 17:45:37.599 INFO [stderr] 
Dec 13 17:45:37.599 INFO [stderr] warning: unused variable: `item`
Dec 13 17:45:37.599 INFO [stderr]   --> src/generics.rs:71:39
Dec 13 17:45:37.599 INFO [stderr]    |
Dec 13 17:45:37.599 INFO [stderr] 71 | fn notify_mult2<T: Summary + Display>(item: T) {
Dec 13 17:45:37.599 INFO [stderr]    |                                       ^^^^ help: consider using `_item` instead
Dec 13 17:45:37.599 INFO [stderr] 
Dec 13 17:45:37.599 INFO [stderr] warning: unused variable: `t`
Dec 13 17:45:37.599 INFO [stderr]   --> src/generics.rs:75:51
Dec 13 17:45:37.599 INFO [stderr]    |
Dec 13 17:45:37.599 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 13 17:45:37.599 INFO [stderr]    |                                                   ^ help: consider using `_t` instead
Dec 13 17:45:37.599 INFO [stderr] 
Dec 13 17:45:37.599 INFO [stderr] warning: unused variable: `u`
Dec 13 17:45:37.599 INFO [stderr]   --> src/generics.rs:75:57
Dec 13 17:45:37.599 INFO [stderr]    |
Dec 13 17:45:37.599 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 13 17:45:37.599 INFO [stderr]    |                                                         ^ help: consider using `_u` instead
Dec 13 17:45:37.599 INFO [stderr] 
Dec 13 17:45:37.599 INFO [stderr] warning: unused variable: `t`
Dec 13 17:45:37.599 INFO [stderr]   --> src/generics.rs:80:19
Dec 13 17:45:37.599 INFO [stderr]    |
Dec 13 17:45:37.599 INFO [stderr] 80 | fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 13 17:45:37.599 INFO [stderr]    |                   ^ help: consider using `_t` instead
Dec 13 17:45:37.599 INFO [stderr] 
Dec 13 17:45:37.599 INFO [stderr] warning: unused variable: `u`
Dec 13 17:45:37.599 INFO [stderr]   --> src/generics.rs:80:25
Dec 13 17:45:37.599 INFO [stderr]    |
Dec 13 17:45:37.599 INFO [stderr] 80 | fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 13 17:45:37.599 INFO [stderr]    |                         ^ help: consider using `_u` instead
Dec 13 17:45:37.599 INFO [stderr] 
Dec 13 17:45:37.615 INFO [stderr] warning: field is never used: `y`
Dec 13 17:45:37.615 INFO [stderr]   --> src/generics.rs:37:5
Dec 13 17:45:37.615 INFO [stderr]    |
Dec 13 17:45:37.615 INFO [stderr] 37 |     y: T,
Dec 13 17:45:37.615 INFO [stderr]    |     ^^^^
Dec 13 17:45:37.615 INFO [stderr]    |
Dec 13 17:45:37.615 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 13 17:45:37.615 INFO [stderr] 
Dec 13 17:45:37.615 INFO [stderr] warning: method is never used: `distance_from_origin`
Dec 13 17:45:37.615 INFO [stderr]   --> src/generics.rs:53:5
Dec 13 17:45:37.615 INFO [stderr]    |
Dec 13 17:45:37.615 INFO [stderr] 53 |     pub fn distance_from_origin(&self) -> f32 {
Dec 13 17:45:37.615 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:37.615 INFO [stderr] 
Dec 13 17:45:37.615 INFO [stderr] warning: function is never used: `notify_mult1`
Dec 13 17:45:37.615 INFO [stderr]   --> src/generics.rs:68:1
Dec 13 17:45:37.615 INFO [stderr]    |
Dec 13 17:45:37.615 INFO [stderr] 68 | fn notify_mult1(item: impl Summary + Display) { // Placeholder
Dec 13 17:45:37.615 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:37.616 INFO [stderr] 
Dec 13 17:45:37.616 INFO [stderr] warning: function is never used: `notify_mult2`
Dec 13 17:45:37.616 INFO [stderr]   --> src/generics.rs:71:1
Dec 13 17:45:37.616 INFO [stderr]    |
Dec 13 17:45:37.616 INFO [stderr] 71 | fn notify_mult2<T: Summary + Display>(item: T) {
Dec 13 17:45:37.616 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:37.616 INFO [stderr] 
Dec 13 17:45:37.616 INFO [stderr] warning: function is never used: `some_fn1`
Dec 13 17:45:37.616 INFO [stderr]   --> src/generics.rs:75:1
Dec 13 17:45:37.616 INFO [stderr]    |
Dec 13 17:45:37.616 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 13 17:45:37.616 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:37.616 INFO [stderr] 
Dec 13 17:45:37.616 INFO [stderr] warning: function is never used: `some_fn2`
Dec 13 17:45:37.616 INFO [stderr]   --> src/generics.rs:80:1
Dec 13 17:45:37.616 INFO [stderr]    |
Dec 13 17:45:37.616 INFO [stderr] 80 | / fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 13 17:45:37.616 INFO [stderr] 81 | |     where T: Display + Clone,
Dec 13 17:45:37.616 INFO [stderr] 82 | |           U: Clone + Debug
Dec 13 17:45:37.616 INFO [stderr] 83 | | {
Dec 13 17:45:37.616 INFO [stderr] 84 | |     // Placeholder
Dec 13 17:45:37.616 INFO [stderr] 85 | |     0
Dec 13 17:45:37.616 INFO [stderr] 86 | | }
Dec 13 17:45:37.616 INFO [stderr]    | |_^
Dec 13 17:45:37.616 INFO [stderr] 
Dec 13 17:45:37.616 INFO [stderr] warning: struct is never constructed: `NewsArticle`
Dec 13 17:45:37.616 INFO [stderr]    --> src/generics.rs:104:1
Dec 13 17:45:37.616 INFO [stderr]     |
Dec 13 17:45:37.616 INFO [stderr] 104 | pub struct NewsArticle {
Dec 13 17:45:37.616 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:37.616 INFO [stderr] 
Dec 13 17:45:38.211 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
Dec 13 17:45:38.211 INFO [stderr] su: No module specific data is present
Dec 13 17:45:39.096 INFO running `"docker" "inspect" "298bc9a9b52398b61b5ab0be86eab6caa61b7f26c8042ba3414df42af056a60d"`
Dec 13 17:45:39.417 INFO running `"docker" "rm" "-f" "298bc9a9b52398b61b5ab0be86eab6caa61b7f26c8042ba3414df42af056a60d"`
Dec 13 17:45:39.779 INFO [stdout] 298bc9a9b52398b61b5ab0be86eab6caa61b7f26c8042ba3414df42af056a60d
Dec 13 17:45:39.787 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 13 17:45:40.465 INFO [stdout] 0aff19280d87f809a621d7ab50eb0ba15b238548a28a484c35dde0666e78a9bb
Dec 13 17:45:40.467 INFO running `"docker" "start" "-a" "0aff19280d87f809a621d7ab50eb0ba15b238548a28a484c35dde0666e78a9bb"`
Dec 13 17:45:42.207 INFO [stderr] usermod: no changes
Dec 13 17:45:42.291 INFO [stderr]    Compiling rust_book_workthrough v0.1.0 (/source)
Dec 13 17:45:42.915 INFO [stderr] warning: unused variable: `item`
Dec 13 17:45:42.915 INFO [stderr]   --> src/generics.rs:68:17
Dec 13 17:45:42.915 INFO [stderr]    |
Dec 13 17:45:42.915 INFO [stderr] 68 | fn notify_mult1(item: impl Summary + Display) { // Placeholder
Dec 13 17:45:42.915 INFO [stderr]    |                 ^^^^ help: consider using `_item` instead
Dec 13 17:45:42.915 INFO [stderr]    |
Dec 13 17:45:42.915 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 17:45:42.915 INFO [stderr] 
Dec 13 17:45:42.915 INFO [stderr] warning: unused variable: `item`
Dec 13 17:45:42.915 INFO [stderr]   --> src/generics.rs:71:39
Dec 13 17:45:42.915 INFO [stderr]    |
Dec 13 17:45:42.915 INFO [stderr] 71 | fn notify_mult2<T: Summary + Display>(item: T) {
Dec 13 17:45:42.915 INFO [stderr]    |                                       ^^^^ help: consider using `_item` instead
Dec 13 17:45:42.915 INFO [stderr] 
Dec 13 17:45:42.915 INFO [stderr] warning: unused variable: `t`
Dec 13 17:45:42.915 INFO [stderr]   --> src/generics.rs:75:51
Dec 13 17:45:42.915 INFO [stderr]    |
Dec 13 17:45:42.915 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 13 17:45:42.915 INFO [stderr]    |                                                   ^ help: consider using `_t` instead
Dec 13 17:45:42.915 INFO [stderr] 
Dec 13 17:45:42.915 INFO [stderr] warning: unused variable: `u`
Dec 13 17:45:42.915 INFO [stderr]   --> src/generics.rs:75:57
Dec 13 17:45:42.915 INFO [stderr]    |
Dec 13 17:45:42.915 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 13 17:45:42.915 INFO [stderr]    |                                                         ^ help: consider using `_u` instead
Dec 13 17:45:42.915 INFO [stderr] 
Dec 13 17:45:42.915 INFO [stderr] warning: unused variable: `t`
Dec 13 17:45:42.915 INFO [stderr]   --> src/generics.rs:80:19
Dec 13 17:45:42.915 INFO [stderr]    |
Dec 13 17:45:42.915 INFO [stderr] 80 | fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 13 17:45:42.915 INFO [stderr]    |                   ^ help: consider using `_t` instead
Dec 13 17:45:42.915 INFO [stderr] 
Dec 13 17:45:42.915 INFO [stderr] warning: unused variable: `u`
Dec 13 17:45:42.915 INFO [stderr]   --> src/generics.rs:80:25
Dec 13 17:45:42.915 INFO [stderr]    |
Dec 13 17:45:42.915 INFO [stderr] 80 | fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 13 17:45:42.915 INFO [stderr]    |                         ^ help: consider using `_u` instead
Dec 13 17:45:42.915 INFO [stderr] 
Dec 13 17:45:42.935 INFO [stderr] warning: field is never used: `y`
Dec 13 17:45:42.935 INFO [stderr]   --> src/generics.rs:37:5
Dec 13 17:45:42.935 INFO [stderr]    |
Dec 13 17:45:42.935 INFO [stderr] 37 |     y: T,
Dec 13 17:45:42.935 INFO [stderr]    |     ^^^^
Dec 13 17:45:42.935 INFO [stderr]    |
Dec 13 17:45:42.935 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 13 17:45:42.935 INFO [stderr] 
Dec 13 17:45:42.935 INFO [stderr] warning: method is never used: `distance_from_origin`
Dec 13 17:45:42.935 INFO [stderr]   --> src/generics.rs:53:5
Dec 13 17:45:42.935 INFO [stderr]    |
Dec 13 17:45:42.935 INFO [stderr] 53 |     pub fn distance_from_origin(&self) -> f32 {
Dec 13 17:45:42.935 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:42.935 INFO [stderr] 
Dec 13 17:45:42.935 INFO [stderr] warning: function is never used: `notify_mult1`
Dec 13 17:45:42.935 INFO [stderr]   --> src/generics.rs:68:1
Dec 13 17:45:42.935 INFO [stderr]    |
Dec 13 17:45:42.935 INFO [stderr] 68 | fn notify_mult1(item: impl Summary + Display) { // Placeholder
Dec 13 17:45:42.935 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:42.935 INFO [stderr] 
Dec 13 17:45:42.935 INFO [stderr] warning: function is never used: `notify_mult2`
Dec 13 17:45:42.935 INFO [stderr]   --> src/generics.rs:71:1
Dec 13 17:45:42.935 INFO [stderr]    |
Dec 13 17:45:42.935 INFO [stderr] 71 | fn notify_mult2<T: Summary + Display>(item: T) {
Dec 13 17:45:42.935 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:42.935 INFO [stderr] 
Dec 13 17:45:42.935 INFO [stderr] warning: function is never used: `some_fn1`
Dec 13 17:45:42.935 INFO [stderr]   --> src/generics.rs:75:1
Dec 13 17:45:42.935 INFO [stderr]    |
Dec 13 17:45:42.935 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 13 17:45:42.935 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:42.935 INFO [stderr] 
Dec 13 17:45:42.935 INFO [stderr] warning: function is never used: `some_fn2`
Dec 13 17:45:42.935 INFO [stderr]   --> src/generics.rs:80:1
Dec 13 17:45:42.935 INFO [stderr]    |
Dec 13 17:45:42.935 INFO [stderr] 80 | / fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 13 17:45:42.935 INFO [stderr] 81 | |     where T: Display + Clone,
Dec 13 17:45:42.935 INFO [stderr] 82 | |           U: Clone + Debug
Dec 13 17:45:42.935 INFO [stderr] 83 | | {
Dec 13 17:45:42.935 INFO [stderr] 84 | |     // Placeholder
Dec 13 17:45:42.935 INFO [stderr] 85 | |     0
Dec 13 17:45:42.935 INFO [stderr] 86 | | }
Dec 13 17:45:42.935 INFO [stderr]    | |_^
Dec 13 17:45:42.935 INFO [stderr] 
Dec 13 17:45:42.935 INFO [stderr] warning: struct is never constructed: `NewsArticle`
Dec 13 17:45:42.935 INFO [stderr]    --> src/generics.rs:104:1
Dec 13 17:45:42.935 INFO [stderr]     |
Dec 13 17:45:42.935 INFO [stderr] 104 | pub struct NewsArticle {
Dec 13 17:45:42.935 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:42.935 INFO [stderr] 
Dec 13 17:45:43.436 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
Dec 13 17:45:43.439 INFO [stderr] su: No module specific data is present
Dec 13 17:45:44.292 INFO running `"docker" "inspect" "0aff19280d87f809a621d7ab50eb0ba15b238548a28a484c35dde0666e78a9bb"`
Dec 13 17:45:44.611 INFO running `"docker" "rm" "-f" "0aff19280d87f809a621d7ab50eb0ba15b238548a28a484c35dde0666e78a9bb"`
Dec 13 17:45:44.871 INFO [stdout] 0aff19280d87f809a621d7ab50eb0ba15b238548a28a484c35dde0666e78a9bb
Dec 13 17:45:44.876 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-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 13 17:45:45.275 INFO [stdout] 56e974aea03c87731bb8b037c7f0e1aebaaaf0fdcf80d856e1dc03f1c2778c94
Dec 13 17:45:45.277 INFO running `"docker" "start" "-a" "56e974aea03c87731bb8b037c7f0e1aebaaaf0fdcf80d856e1dc03f1c2778c94"`
Dec 13 17:45:46.451 INFO [stderr] usermod: no changes
Dec 13 17:45:46.539 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Dec 13 17:45:46.543 INFO [stderr]      Running /target/debug/deps/rust_book_workthrough-b1a0a7097c21249d
Dec 13 17:45:46.547 INFO [stdout] 
Dec 13 17:45:46.547 INFO [stdout] running 0 tests
Dec 13 17:45:46.547 INFO [stdout] 
Dec 13 17:45:46.547 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 17:45:46.547 INFO [stdout] 
Dec 13 17:45:46.559 INFO [stderr] su: No module specific data is present
Dec 13 17:45:47.239 INFO running `"docker" "inspect" "56e974aea03c87731bb8b037c7f0e1aebaaaf0fdcf80d856e1dc03f1c2778c94"`
Dec 13 17:45:47.635 INFO running `"docker" "rm" "-f" "56e974aea03c87731bb8b037c7f0e1aebaaaf0fdcf80d856e1dc03f1c2778c94"`
Dec 13 17:45:47.939 INFO [stdout] 56e974aea03c87731bb8b037c7f0e1aebaaaf0fdcf80d856e1dc03f1c2778c94