Dec 04 21:16:37.696 INFO checking caporta/rust_fundamentals against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 21:16:37.696 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 21:16:38.091 INFO [stdout] 347692d5c35d6c224c42a1be8f07b3da98732f3891daab918efd068628ab6e8f
Dec 04 21:16:38.097 INFO running `"docker" "start" "-a" "347692d5c35d6c224c42a1be8f07b3da98732f3891daab918efd068628ab6e8f"`
Dec 04 21:16:39.188 INFO [stderr] usermod: no changes
Dec 04 21:16:39.245 INFO [stderr]     Checking hello_world v0.0.1 (/source)
Dec 04 21:16:39.351 INFO [stderr] warning: unknown lint: `unused_variable`
Dec 04 21:16:39.351 INFO [stderr]  --> src/stack_and_heap.rs:2:9
Dec 04 21:16:39.351 INFO [stderr]   |
Dec 04 21:16:39.351 INFO [stderr] 2 | #[allow(unused_variable)]
Dec 04 21:16:39.351 INFO [stderr]   |         ^^^^^^^^^^^^^^^
Dec 04 21:16:39.351 INFO [stderr]   |
Dec 04 21:16:39.351 INFO [stderr]   = note: #[warn(unknown_lints)] on by default
Dec 04 21:16:39.351 INFO [stderr] 
Dec 04 21:16:39.470 INFO [stderr] warning: unknown lint: `unused_variable`
Dec 04 21:16:39.470 INFO [stderr]  --> src/stack_and_heap.rs:2:9
Dec 04 21:16:39.470 INFO [stderr]   |
Dec 04 21:16:39.470 INFO [stderr] 2 | #[allow(unused_variable)]
Dec 04 21:16:39.470 INFO [stderr]   |         ^^^^^^^^^^^^^^^
Dec 04 21:16:39.470 INFO [stderr]   |
Dec 04 21:16:39.470 INFO [stderr]   = note: #[warn(unknown_lints)] on by default
Dec 04 21:16:39.470 INFO [stderr] 
Dec 04 21:16:40.087 INFO [stderr] warning: unused variable: `x`
Dec 04 21:16:40.087 INFO [stderr]   --> src/stack_and_heap.rs:15:9
Dec 04 21:16:40.087 INFO [stderr]    |
Dec 04 21:16:40.087 INFO [stderr] 15 |     let x = 5; // i32 stored on the stack
Dec 04 21:16:40.087 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 21:16:40.087 INFO [stderr]    |
Dec 04 21:16:40.087 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 21:16:40.087 INFO [stderr] 
Dec 04 21:16:40.087 INFO [stderr] warning: unused variable: `u`
Dec 04 21:16:40.087 INFO [stderr]   --> src/data_structures_2.rs:43:9
Dec 04 21:16:40.087 INFO [stderr]    |
Dec 04 21:16:40.087 INFO [stderr] 43 |     let u:&str = &letters; // d-ref conversions
Dec 04 21:16:40.087 INFO [stderr]    |         ^ help: consider using `_u` instead
Dec 04 21:16:40.087 INFO [stderr] 
Dec 04 21:16:40.087 INFO [stderr] warning: unused variable: `z`
Dec 04 21:16:40.087 INFO [stderr]  --> src/pattern_matching.rs:5:9
Dec 04 21:16:40.087 INFO [stderr]   |
Dec 04 21:16:40.087 INFO [stderr] 5 |         z @ 9...11 => "lots of", //assign range to variable
Dec 04 21:16:40.087 INFO [stderr]   |         ^ help: consider using `_z` instead
Dec 04 21:16:40.087 INFO [stderr] 
Dec 04 21:16:40.087 INFO [stderr] warning: unused variable: `myLine`
Dec 04 21:16:40.087 INFO [stderr]   --> src/generics.rs:17:9
Dec 04 21:16:40.087 INFO [stderr]    |
Dec 04 21:16:40.087 INFO [stderr] 17 |     let myLine = Line { start: a, end: b };
Dec 04 21:16:40.087 INFO [stderr]    |         ^^^^^^ help: consider using `_myLine` instead
Dec 04 21:16:40.087 INFO [stderr] 
Dec 04 21:16:40.183 INFO [stderr] warning: unused variable: `x`
Dec 04 21:16:40.183 INFO [stderr]   --> src/stack_and_heap.rs:15:9
Dec 04 21:16:40.183 INFO [stderr]    |
Dec 04 21:16:40.183 INFO [stderr] 15 |     let x = 5; // i32 stored on the stack
Dec 04 21:16:40.183 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 21:16:40.183 INFO [stderr]    |
Dec 04 21:16:40.183 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 21:16:40.183 INFO [stderr] 
Dec 04 21:16:40.183 INFO [stderr] warning: unused variable: `u`
Dec 04 21:16:40.183 INFO [stderr]   --> src/data_structures_2.rs:43:9
Dec 04 21:16:40.183 INFO [stderr]    |
Dec 04 21:16:40.183 INFO [stderr] 43 |     let u:&str = &letters; // d-ref conversions
Dec 04 21:16:40.183 INFO [stderr]    |         ^ help: consider using `_u` instead
Dec 04 21:16:40.183 INFO [stderr] 
Dec 04 21:16:40.183 INFO [stderr] warning: unused variable: `z`
Dec 04 21:16:40.183 INFO [stderr]  --> src/pattern_matching.rs:5:9
Dec 04 21:16:40.183 INFO [stderr]   |
Dec 04 21:16:40.183 INFO [stderr] 5 |         z @ 9...11 => "lots of", //assign range to variable
Dec 04 21:16:40.183 INFO [stderr]   |         ^ help: consider using `_z` instead
Dec 04 21:16:40.183 INFO [stderr] 
Dec 04 21:16:40.183 INFO [stderr] warning: unused variable: `myLine`
Dec 04 21:16:40.183 INFO [stderr]   --> src/generics.rs:17:9
Dec 04 21:16:40.183 INFO [stderr]    |
Dec 04 21:16:40.183 INFO [stderr] 17 |     let myLine = Line { start: a, end: b };
Dec 04 21:16:40.183 INFO [stderr]    |         ^^^^^^ help: consider using `_myLine` instead
Dec 04 21:16:40.183 INFO [stderr] 
Dec 04 21:16:40.263 INFO [stderr] warning: field is never used: `y`
Dec 04 21:16:40.263 INFO [stderr]  --> src/stack_and_heap.rs:7:5
Dec 04 21:16:40.263 INFO [stderr]   |
Dec 04 21:16:40.263 INFO [stderr] 7 |     y: f64
Dec 04 21:16:40.263 INFO [stderr]   |     ^^^^^^
Dec 04 21:16:40.263 INFO [stderr]   |
Dec 04 21:16:40.263 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 21:16:40.263 INFO [stderr] 
Dec 04 21:16:40.263 INFO [stderr] warning: variant is never constructed: `Red`
Dec 04 21:16:40.263 INFO [stderr]   --> src/data_structures_1.rs:28:5
Dec 04 21:16:40.263 INFO [stderr]    |
Dec 04 21:16:40.263 INFO [stderr] 28 |     Red, // "memberless struct"
Dec 04 21:16:40.263 INFO [stderr]    |     ^^^
Dec 04 21:16:40.263 INFO [stderr] 
Dec 04 21:16:40.263 INFO [stderr] warning: variant is never constructed: `Green`
Dec 04 21:16:40.263 INFO [stderr]   --> src/data_structures_1.rs:29:5
Dec 04 21:16:40.263 INFO [stderr]    |
Dec 04 21:16:40.263 INFO [stderr] 29 |     Green, // "memberless struct"
Dec 04 21:16:40.263 INFO [stderr]    |     ^^^^^
Dec 04 21:16:40.263 INFO [stderr] 
Dec 04 21:16:40.263 INFO [stderr] warning: variant is never constructed: `Blue`
Dec 04 21:16:40.263 INFO [stderr]   --> src/data_structures_1.rs:30:5
Dec 04 21:16:40.263 INFO [stderr]    |
Dec 04 21:16:40.263 INFO [stderr] 30 |     Blue, // etc...
Dec 04 21:16:40.263 INFO [stderr]    |     ^^^^
Dec 04 21:16:40.263 INFO [stderr] 
Dec 04 21:16:40.263 INFO [stderr] warning: variant is never constructed: `RGBColor`
Dec 04 21:16:40.263 INFO [stderr]   --> src/data_structures_1.rs:31:5
Dec 04 21:16:40.263 INFO [stderr]    |
Dec 04 21:16:40.263 INFO [stderr] 31 |     RGBColor(u8, u8, u8), // tuple
Dec 04 21:16:40.263 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 04 21:16:40.263 INFO [stderr] 
Dec 04 21:16:40.263 INFO [stderr] warning: field is never used: `cyan`
Dec 04 21:16:40.263 INFO [stderr]   --> src/data_structures_1.rs:32:15
Dec 04 21:16:40.263 INFO [stderr]    |
Dec 04 21:16:40.263 INFO [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
Dec 04 21:16:40.263 INFO [stderr]    |               ^^^^^^^
Dec 04 21:16:40.263 INFO [stderr] 
Dec 04 21:16:40.263 INFO [stderr] warning: field is never used: `magenta`
Dec 04 21:16:40.263 INFO [stderr]   --> src/data_structures_1.rs:32:24
Dec 04 21:16:40.263 INFO [stderr]    |
Dec 04 21:16:40.263 INFO [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
Dec 04 21:16:40.263 INFO [stderr]    |                        ^^^^^^^^^^
Dec 04 21:16:40.263 INFO [stderr] 
Dec 04 21:16:40.263 INFO [stderr] warning: field is never used: `yellow`
Dec 04 21:16:40.263 INFO [stderr]   --> src/data_structures_1.rs:32:36
Dec 04 21:16:40.263 INFO [stderr]    |
Dec 04 21:16:40.263 INFO [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
Dec 04 21:16:40.263 INFO [stderr]    |                                    ^^^^^^^^^
Dec 04 21:16:40.263 INFO [stderr] 
Dec 04 21:16:40.279 INFO [stderr] warning: field is never used: `start`
Dec 04 21:16:40.279 INFO [stderr]  --> src/generics.rs:7:5
Dec 04 21:16:40.279 INFO [stderr]   |
Dec 04 21:16:40.279 INFO [stderr] 7 |     start: Point<T>,
Dec 04 21:16:40.279 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 04 21:16:40.279 INFO [stderr] 
Dec 04 21:16:40.279 INFO [stderr] warning: field is never used: `end`
Dec 04 21:16:40.279 INFO [stderr]  --> src/generics.rs:8:5
Dec 04 21:16:40.279 INFO [stderr]   |
Dec 04 21:16:40.279 INFO [stderr] 8 |     end: Point<T>,
Dec 04 21:16:40.279 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 04 21:16:40.279 INFO [stderr] 
Dec 04 21:16:40.279 INFO [stderr] warning: variable `myLine` should have a snake case name such as `my_line`
Dec 04 21:16:40.279 INFO [stderr]   --> src/data_structures_1.rs:21:9
Dec 04 21:16:40.279 INFO [stderr]    |
Dec 04 21:16:40.279 INFO [stderr] 21 |     let myLine = Line { start: p, end: p2 };
Dec 04 21:16:40.279 INFO [stderr]    |         ^^^^^^
Dec 04 21:16:40.279 INFO [stderr]    |
Dec 04 21:16:40.279 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 04 21:16:40.279 INFO [stderr] 
Dec 04 21:16:40.279 INFO [stderr] warning: variable `myLine` should have a snake case name such as `my_line`
Dec 04 21:16:40.279 INFO [stderr]   --> src/generics.rs:17:9
Dec 04 21:16:40.279 INFO [stderr]    |
Dec 04 21:16:40.279 INFO [stderr] 17 |     let myLine = Line { start: a, end: b };
Dec 04 21:16:40.279 INFO [stderr]    |         ^^^^^^
Dec 04 21:16:40.279 INFO [stderr] 
Dec 04 21:16:40.327 INFO [stderr] warning: field is never used: `y`
Dec 04 21:16:40.327 INFO [stderr]  --> src/stack_and_heap.rs:7:5
Dec 04 21:16:40.327 INFO [stderr]   |
Dec 04 21:16:40.327 INFO [stderr] 7 |     y: f64
Dec 04 21:16:40.327 INFO [stderr]   |     ^^^^^^
Dec 04 21:16:40.327 INFO [stderr]   |
Dec 04 21:16:40.327 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 21:16:40.327 INFO [stderr] 
Dec 04 21:16:40.327 INFO [stderr] warning: variant is never constructed: `Red`
Dec 04 21:16:40.327 INFO [stderr]   --> src/data_structures_1.rs:28:5
Dec 04 21:16:40.327 INFO [stderr]    |
Dec 04 21:16:40.327 INFO [stderr] 28 |     Red, // "memberless struct"
Dec 04 21:16:40.327 INFO [stderr]    |     ^^^
Dec 04 21:16:40.327 INFO [stderr] 
Dec 04 21:16:40.327 INFO [stderr] warning: variant is never constructed: `Green`
Dec 04 21:16:40.327 INFO [stderr]   --> src/data_structures_1.rs:29:5
Dec 04 21:16:40.327 INFO [stderr]    |
Dec 04 21:16:40.327 INFO [stderr] 29 |     Green, // "memberless struct"
Dec 04 21:16:40.327 INFO [stderr]    |     ^^^^^
Dec 04 21:16:40.327 INFO [stderr] 
Dec 04 21:16:40.327 INFO [stderr] warning: variant is never constructed: `Blue`
Dec 04 21:16:40.327 INFO [stderr]   --> src/data_structures_1.rs:30:5
Dec 04 21:16:40.327 INFO [stderr]    |
Dec 04 21:16:40.327 INFO [stderr] 30 |     Blue, // etc...
Dec 04 21:16:40.327 INFO [stderr]    |     ^^^^
Dec 04 21:16:40.327 INFO [stderr] 
Dec 04 21:16:40.327 INFO [stderr] warning: variant is never constructed: `RGBColor`
Dec 04 21:16:40.327 INFO [stderr]   --> src/data_structures_1.rs:31:5
Dec 04 21:16:40.327 INFO [stderr]    |
Dec 04 21:16:40.327 INFO [stderr] 31 |     RGBColor(u8, u8, u8), // tuple
Dec 04 21:16:40.327 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 04 21:16:40.327 INFO [stderr] 
Dec 04 21:16:40.327 INFO [stderr] warning: field is never used: `cyan`
Dec 04 21:16:40.327 INFO [stderr]   --> src/data_structures_1.rs:32:15
Dec 04 21:16:40.327 INFO [stderr]    |
Dec 04 21:16:40.327 INFO [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
Dec 04 21:16:40.327 INFO [stderr]    |               ^^^^^^^
Dec 04 21:16:40.327 INFO [stderr] 
Dec 04 21:16:40.327 INFO [stderr] warning: field is never used: `magenta`
Dec 04 21:16:40.327 INFO [stderr]   --> src/data_structures_1.rs:32:24
Dec 04 21:16:40.327 INFO [stderr]    |
Dec 04 21:16:40.327 INFO [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
Dec 04 21:16:40.327 INFO [stderr]    |                        ^^^^^^^^^^
Dec 04 21:16:40.327 INFO [stderr] 
Dec 04 21:16:40.327 INFO [stderr] warning: field is never used: `yellow`
Dec 04 21:16:40.327 INFO [stderr]   --> src/data_structures_1.rs:32:36
Dec 04 21:16:40.328 INFO [stderr]    |
Dec 04 21:16:40.328 INFO [stderr] 32 |     CmykColor{cyan:u8, magenta:u8, yellow:u8, black:u8}, // struct
Dec 04 21:16:40.328 INFO [stderr]    |                                    ^^^^^^^^^
Dec 04 21:16:40.328 INFO [stderr] 
Dec 04 21:16:40.328 INFO [stderr] warning: field is never used: `start`
Dec 04 21:16:40.328 INFO [stderr]  --> src/generics.rs:7:5
Dec 04 21:16:40.328 INFO [stderr]   |
Dec 04 21:16:40.328 INFO [stderr] 7 |     start: Point<T>,
Dec 04 21:16:40.328 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 04 21:16:40.328 INFO [stderr] 
Dec 04 21:16:40.328 INFO [stderr] warning: field is never used: `end`
Dec 04 21:16:40.328 INFO [stderr]  --> src/generics.rs:8:5
Dec 04 21:16:40.328 INFO [stderr]   |
Dec 04 21:16:40.328 INFO [stderr] 8 |     end: Point<T>,
Dec 04 21:16:40.328 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 04 21:16:40.328 INFO [stderr] 
Dec 04 21:16:40.328 INFO [stderr] warning: variable `myLine` should have a snake case name such as `my_line`
Dec 04 21:16:40.328 INFO [stderr]   --> src/data_structures_1.rs:21:9
Dec 04 21:16:40.328 INFO [stderr]    |
Dec 04 21:16:40.328 INFO [stderr] 21 |     let myLine = Line { start: p, end: p2 };
Dec 04 21:16:40.328 INFO [stderr]    |         ^^^^^^
Dec 04 21:16:40.328 INFO [stderr]    |
Dec 04 21:16:40.328 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 04 21:16:40.328 INFO [stderr] 
Dec 04 21:16:40.328 INFO [stderr] warning: variable `myLine` should have a snake case name such as `my_line`
Dec 04 21:16:40.328 INFO [stderr]   --> src/generics.rs:17:9
Dec 04 21:16:40.328 INFO [stderr]    |
Dec 04 21:16:40.328 INFO [stderr] 17 |     let myLine = Line { start: a, end: b };
Dec 04 21:16:40.328 INFO [stderr]    |         ^^^^^^
Dec 04 21:16:40.328 INFO [stderr] 
Dec 04 21:16:40.367 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
Dec 04 21:16:40.367 INFO [stderr] su: No module specific data is present
Dec 04 21:16:41.141 INFO running `"docker" "inspect" "347692d5c35d6c224c42a1be8f07b3da98732f3891daab918efd068628ab6e8f"`
Dec 04 21:16:41.445 INFO running `"docker" "rm" "-f" "347692d5c35d6c224c42a1be8f07b3da98732f3891daab918efd068628ab6e8f"`
Dec 04 21:16:41.739 INFO [stdout] 347692d5c35d6c224c42a1be8f07b3da98732f3891daab918efd068628ab6e8f