Dec 13 17:45:32.958 INFO testing hasanhaja/rust_book_workthrough against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 13 17:45:32.958 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 17:45:33.569 INFO [stdout] c40b8a8ea71d8368c6e3cad6a863795d00d5edb10351cb11f9f7630d01a85f60
Dec 13 17:45:33.571 INFO running `"docker" "start" "-a" "c40b8a8ea71d8368c6e3cad6a863795d00d5edb10351cb11f9f7630d01a85f60"`
Dec 13 17:45:35.235 INFO [stderr] usermod: no changes
Dec 13 17:45:35.343 INFO [stderr]    Compiling rust_book_workthrough v0.1.0 (/source)
Dec 13 17:45:35.857 INFO [stderr] warning: unused variable: `item`
Dec 13 17:45:35.857 INFO [stderr]   --> src/generics.rs:68:17
Dec 13 17:45:35.858 INFO [stderr]    |
Dec 13 17:45:35.858 INFO [stderr] 68 | fn notify_mult1(item: impl Summary + Display) { // Placeholder
Dec 13 17:45:35.858 INFO [stderr]    |                 ^^^^ help: consider using `_item` instead
Dec 13 17:45:35.858 INFO [stderr]    |
Dec 13 17:45:35.859 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 17:45:35.859 INFO [stderr] 
Dec 13 17:45:35.859 INFO [stderr] warning: unused variable: `item`
Dec 13 17:45:35.859 INFO [stderr]   --> src/generics.rs:71:39
Dec 13 17:45:35.859 INFO [stderr]    |
Dec 13 17:45:35.859 INFO [stderr] 71 | fn notify_mult2<T: Summary + Display>(item: T) {
Dec 13 17:45:35.859 INFO [stderr]    |                                       ^^^^ help: consider using `_item` instead
Dec 13 17:45:35.859 INFO [stderr] 
Dec 13 17:45:35.859 INFO [stderr] warning: unused variable: `t`
Dec 13 17:45:35.859 INFO [stderr]   --> src/generics.rs:75:51
Dec 13 17:45:35.859 INFO [stderr]    |
Dec 13 17:45:35.859 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 13 17:45:35.859 INFO [stderr]    |                                                   ^ help: consider using `_t` instead
Dec 13 17:45:35.859 INFO [stderr] 
Dec 13 17:45:35.859 INFO [stderr] warning: unused variable: `u`
Dec 13 17:45:35.859 INFO [stderr]   --> src/generics.rs:75:57
Dec 13 17:45:35.859 INFO [stderr]    |
Dec 13 17:45:35.859 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 13 17:45:35.859 INFO [stderr]    |                                                         ^ help: consider using `_u` instead
Dec 13 17:45:35.859 INFO [stderr] 
Dec 13 17:45:35.859 INFO [stderr] warning: unused variable: `t`
Dec 13 17:45:35.859 INFO [stderr]   --> src/generics.rs:80:19
Dec 13 17:45:35.859 INFO [stderr]    |
Dec 13 17:45:35.859 INFO [stderr] 80 | fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 13 17:45:35.859 INFO [stderr]    |                   ^ help: consider using `_t` instead
Dec 13 17:45:35.859 INFO [stderr] 
Dec 13 17:45:35.859 INFO [stderr] warning: unused variable: `u`
Dec 13 17:45:35.859 INFO [stderr]   --> src/generics.rs:80:25
Dec 13 17:45:35.859 INFO [stderr]    |
Dec 13 17:45:35.859 INFO [stderr] 80 | fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 13 17:45:35.859 INFO [stderr]    |                         ^ help: consider using `_u` instead
Dec 13 17:45:35.859 INFO [stderr] 
Dec 13 17:45:35.880 INFO [stderr] warning: field is never used: `y`
Dec 13 17:45:35.880 INFO [stderr]   --> src/generics.rs:37:5
Dec 13 17:45:35.880 INFO [stderr]    |
Dec 13 17:45:35.881 INFO [stderr] 37 |     y: T,
Dec 13 17:45:35.881 INFO [stderr]    |     ^^^^
Dec 13 17:45:35.881 INFO [stderr]    |
Dec 13 17:45:35.882 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 13 17:45:35.882 INFO [stderr] 
Dec 13 17:45:35.882 INFO [stderr] warning: method is never used: `distance_from_origin`
Dec 13 17:45:35.882 INFO [stderr]   --> src/generics.rs:53:5
Dec 13 17:45:35.882 INFO [stderr]    |
Dec 13 17:45:35.882 INFO [stderr] 53 |     pub fn distance_from_origin(&self) -> f32 {
Dec 13 17:45:35.882 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:35.882 INFO [stderr] 
Dec 13 17:45:35.882 INFO [stderr] warning: function is never used: `notify_mult1`
Dec 13 17:45:35.882 INFO [stderr]   --> src/generics.rs:68:1
Dec 13 17:45:35.882 INFO [stderr]    |
Dec 13 17:45:35.882 INFO [stderr] 68 | fn notify_mult1(item: impl Summary + Display) { // Placeholder
Dec 13 17:45:35.882 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:35.882 INFO [stderr] 
Dec 13 17:45:35.882 INFO [stderr] warning: function is never used: `notify_mult2`
Dec 13 17:45:35.882 INFO [stderr]   --> src/generics.rs:71:1
Dec 13 17:45:35.882 INFO [stderr]    |
Dec 13 17:45:35.882 INFO [stderr] 71 | fn notify_mult2<T: Summary + Display>(item: T) {
Dec 13 17:45:35.882 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:35.882 INFO [stderr] 
Dec 13 17:45:35.882 INFO [stderr] warning: function is never used: `some_fn1`
Dec 13 17:45:35.882 INFO [stderr]   --> src/generics.rs:75:1
Dec 13 17:45:35.882 INFO [stderr]    |
Dec 13 17:45:35.882 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 13 17:45:35.882 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:35.882 INFO [stderr] 
Dec 13 17:45:35.882 INFO [stderr] warning: function is never used: `some_fn2`
Dec 13 17:45:35.882 INFO [stderr]   --> src/generics.rs:80:1
Dec 13 17:45:35.882 INFO [stderr]    |
Dec 13 17:45:35.882 INFO [stderr] 80 | / fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 13 17:45:35.882 INFO [stderr] 81 | |     where T: Display + Clone,
Dec 13 17:45:35.882 INFO [stderr] 82 | |           U: Clone + Debug
Dec 13 17:45:35.882 INFO [stderr] 83 | | {
Dec 13 17:45:35.882 INFO [stderr] 84 | |     // Placeholder
Dec 13 17:45:35.882 INFO [stderr] 85 | |     0
Dec 13 17:45:35.882 INFO [stderr] 86 | | }
Dec 13 17:45:35.882 INFO [stderr]    | |_^
Dec 13 17:45:35.882 INFO [stderr] 
Dec 13 17:45:35.882 INFO [stderr] warning: struct is never constructed: `NewsArticle`
Dec 13 17:45:35.882 INFO [stderr]    --> src/generics.rs:104:1
Dec 13 17:45:35.882 INFO [stderr]     |
Dec 13 17:45:35.882 INFO [stderr] 104 | pub struct NewsArticle {
Dec 13 17:45:35.882 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:35.882 INFO [stderr] 
Dec 13 17:45:36.527 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
Dec 13 17:45:36.527 INFO [stderr] su: No module specific data is present
Dec 13 17:45:37.474 INFO running `"docker" "inspect" "c40b8a8ea71d8368c6e3cad6a863795d00d5edb10351cb11f9f7630d01a85f60"`
Dec 13 17:45:37.843 INFO running `"docker" "rm" "-f" "c40b8a8ea71d8368c6e3cad6a863795d00d5edb10351cb11f9f7630d01a85f60"`
Dec 13 17:45:38.091 INFO [stdout] c40b8a8ea71d8368c6e3cad6a863795d00d5edb10351cb11f9f7630d01a85f60
Dec 13 17:45:38.096 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 17:45:38.549 INFO [stdout] 4f944b61feebc4c485f2aa730cd0f46e0026f97ebe61811cd74cbb7a7020eb51
Dec 13 17:45:38.552 INFO running `"docker" "start" "-a" "4f944b61feebc4c485f2aa730cd0f46e0026f97ebe61811cd74cbb7a7020eb51"`
Dec 13 17:45:40.327 INFO [stderr] usermod: no changes
Dec 13 17:45:40.431 INFO [stderr]    Compiling rust_book_workthrough v0.1.0 (/source)
Dec 13 17:45:40.882 INFO [stderr] warning: unused variable: `item`
Dec 13 17:45:40.882 INFO [stderr]   --> src/generics.rs:68:17
Dec 13 17:45:40.882 INFO [stderr]    |
Dec 13 17:45:40.882 INFO [stderr] 68 | fn notify_mult1(item: impl Summary + Display) { // Placeholder
Dec 13 17:45:40.882 INFO [stderr]    |                 ^^^^ help: consider using `_item` instead
Dec 13 17:45:40.882 INFO [stderr]    |
Dec 13 17:45:40.882 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 17:45:40.882 INFO [stderr] 
Dec 13 17:45:40.882 INFO [stderr] warning: unused variable: `item`
Dec 13 17:45:40.882 INFO [stderr]   --> src/generics.rs:71:39
Dec 13 17:45:40.882 INFO [stderr]    |
Dec 13 17:45:40.882 INFO [stderr] 71 | fn notify_mult2<T: Summary + Display>(item: T) {
Dec 13 17:45:40.882 INFO [stderr]    |                                       ^^^^ help: consider using `_item` instead
Dec 13 17:45:40.882 INFO [stderr] 
Dec 13 17:45:40.882 INFO [stderr] warning: unused variable: `t`
Dec 13 17:45:40.882 INFO [stderr]   --> src/generics.rs:75:51
Dec 13 17:45:40.882 INFO [stderr]    |
Dec 13 17:45:40.882 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 13 17:45:40.882 INFO [stderr]    |                                                   ^ help: consider using `_t` instead
Dec 13 17:45:40.882 INFO [stderr] 
Dec 13 17:45:40.882 INFO [stderr] warning: unused variable: `u`
Dec 13 17:45:40.882 INFO [stderr]   --> src/generics.rs:75:57
Dec 13 17:45:40.882 INFO [stderr]    |
Dec 13 17:45:40.882 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 13 17:45:40.882 INFO [stderr]    |                                                         ^ help: consider using `_u` instead
Dec 13 17:45:40.882 INFO [stderr] 
Dec 13 17:45:40.882 INFO [stderr] warning: unused variable: `t`
Dec 13 17:45:40.882 INFO [stderr]   --> src/generics.rs:80:19
Dec 13 17:45:40.882 INFO [stderr]    |
Dec 13 17:45:40.882 INFO [stderr] 80 | fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 13 17:45:40.882 INFO [stderr]    |                   ^ help: consider using `_t` instead
Dec 13 17:45:40.882 INFO [stderr] 
Dec 13 17:45:40.882 INFO [stderr] warning: unused variable: `u`
Dec 13 17:45:40.882 INFO [stderr]   --> src/generics.rs:80:25
Dec 13 17:45:40.882 INFO [stderr]    |
Dec 13 17:45:40.882 INFO [stderr] 80 | fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 13 17:45:40.882 INFO [stderr]    |                         ^ help: consider using `_u` instead
Dec 13 17:45:40.882 INFO [stderr] 
Dec 13 17:45:40.906 INFO [stderr] warning: field is never used: `y`
Dec 13 17:45:40.906 INFO [stderr]   --> src/generics.rs:37:5
Dec 13 17:45:40.906 INFO [stderr]    |
Dec 13 17:45:40.906 INFO [stderr] 37 |     y: T,
Dec 13 17:45:40.906 INFO [stderr]    |     ^^^^
Dec 13 17:45:40.906 INFO [stderr]    |
Dec 13 17:45:40.906 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 13 17:45:40.906 INFO [stderr] 
Dec 13 17:45:40.907 INFO [stderr] warning: method is never used: `distance_from_origin`
Dec 13 17:45:40.907 INFO [stderr]   --> src/generics.rs:53:5
Dec 13 17:45:40.907 INFO [stderr]    |
Dec 13 17:45:40.907 INFO [stderr] 53 |     pub fn distance_from_origin(&self) -> f32 {
Dec 13 17:45:40.907 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:40.907 INFO [stderr] 
Dec 13 17:45:40.907 INFO [stderr] warning: function is never used: `notify_mult1`
Dec 13 17:45:40.907 INFO [stderr]   --> src/generics.rs:68:1
Dec 13 17:45:40.907 INFO [stderr]    |
Dec 13 17:45:40.907 INFO [stderr] 68 | fn notify_mult1(item: impl Summary + Display) { // Placeholder
Dec 13 17:45:40.907 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:40.907 INFO [stderr] 
Dec 13 17:45:40.907 INFO [stderr] warning: function is never used: `notify_mult2`
Dec 13 17:45:40.907 INFO [stderr]   --> src/generics.rs:71:1
Dec 13 17:45:40.907 INFO [stderr]    |
Dec 13 17:45:40.907 INFO [stderr] 71 | fn notify_mult2<T: Summary + Display>(item: T) {
Dec 13 17:45:40.907 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:40.907 INFO [stderr] 
Dec 13 17:45:40.907 INFO [stderr] warning: function is never used: `some_fn1`
Dec 13 17:45:40.907 INFO [stderr]   --> src/generics.rs:75:1
Dec 13 17:45:40.907 INFO [stderr]    |
Dec 13 17:45:40.907 INFO [stderr] 75 | fn some_fn1<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {
Dec 13 17:45:40.907 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:40.907 INFO [stderr] 
Dec 13 17:45:40.907 INFO [stderr] warning: function is never used: `some_fn2`
Dec 13 17:45:40.907 INFO [stderr]   --> src/generics.rs:80:1
Dec 13 17:45:40.907 INFO [stderr]    |
Dec 13 17:45:40.907 INFO [stderr] 80 | / fn some_fn2<T, U>(t: T, u: U) -> i32
Dec 13 17:45:40.907 INFO [stderr] 81 | |     where T: Display + Clone,
Dec 13 17:45:40.907 INFO [stderr] 82 | |           U: Clone + Debug
Dec 13 17:45:40.907 INFO [stderr] 83 | | {
Dec 13 17:45:40.907 INFO [stderr] 84 | |     // Placeholder
Dec 13 17:45:40.907 INFO [stderr] 85 | |     0
Dec 13 17:45:40.907 INFO [stderr] 86 | | }
Dec 13 17:45:40.907 INFO [stderr]    | |_^
Dec 13 17:45:40.907 INFO [stderr] 
Dec 13 17:45:40.907 INFO [stderr] warning: struct is never constructed: `NewsArticle`
Dec 13 17:45:40.907 INFO [stderr]    --> src/generics.rs:104:1
Dec 13 17:45:40.907 INFO [stderr]     |
Dec 13 17:45:40.907 INFO [stderr] 104 | pub struct NewsArticle {
Dec 13 17:45:40.907 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Dec 13 17:45:40.907 INFO [stderr] 
Dec 13 17:45:41.235 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
Dec 13 17:45:41.235 INFO [stderr] su: No module specific data is present
Dec 13 17:45:42.472 INFO running `"docker" "inspect" "4f944b61feebc4c485f2aa730cd0f46e0026f97ebe61811cd74cbb7a7020eb51"`
Dec 13 17:45:42.781 INFO running `"docker" "rm" "-f" "4f944b61feebc4c485f2aa730cd0f46e0026f97ebe61811cd74cbb7a7020eb51"`
Dec 13 17:45:43.051 INFO [stdout] 4f944b61feebc4c485f2aa730cd0f46e0026f97ebe61811cd74cbb7a7020eb51
Dec 13 17:45:43.059 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 17:45:43.520 INFO [stdout] cb209b6b8c83518c5402f4153f8aa32b00941b595b2fc5f451ab9d774a00973e
Dec 13 17:45:43.522 INFO running `"docker" "start" "-a" "cb209b6b8c83518c5402f4153f8aa32b00941b595b2fc5f451ab9d774a00973e"`
Dec 13 17:45:44.551 INFO [stderr] usermod: no changes
Dec 13 17:45:44.612 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
Dec 13 17:45:44.614 INFO [stderr]      Running /target/debug/deps/rust_book_workthrough-c3a11cb50409efe4
Dec 13 17:45:44.622 INFO [stdout] 
Dec 13 17:45:44.622 INFO [stdout] running 0 tests
Dec 13 17:45:44.622 INFO [stdout] 
Dec 13 17:45:44.622 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 17:45:44.622 INFO [stdout] 
Dec 13 17:45:44.628 INFO [stderr] su: No module specific data is present
Dec 13 17:45:45.687 INFO running `"docker" "inspect" "cb209b6b8c83518c5402f4153f8aa32b00941b595b2fc5f451ab9d774a00973e"`
Dec 13 17:45:45.995 INFO running `"docker" "rm" "-f" "cb209b6b8c83518c5402f4153f8aa32b00941b595b2fc5f451ab9d774a00973e"`
Dec 13 17:45:46.227 INFO [stdout] cb209b6b8c83518c5402f4153f8aa32b00941b595b2fc5f451ab9d774a00973e