Dec 12 03:29:55.767 INFO checking CharlesGe129/learn_rust against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 03:29:55.767 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 12 03:29:56.133 INFO [stdout] 52104e9fa6bb2ed4cf59125c8ff8f13801cb556907d7fa5a5da58e8a5eaab0fe
Dec 12 03:29:56.133 INFO running `"docker" "start" "-a" "52104e9fa6bb2ed4cf59125c8ff8f13801cb556907d7fa5a5da58e8a5eaab0fe"`
Dec 12 03:29:57.612 INFO [stderr] usermod: no changes
Dec 12 03:29:57.676 INFO [stderr]     Checking learn_rust v0.1.0 (/source)
Dec 12 03:29:58.353 INFO [stderr] warning: unused variable: `v`
Dec 12 03:29:58.353 INFO [stderr]  --> src/array.rs:6:9
Dec 12 03:29:58.353 INFO [stderr]   |
Dec 12 03:29:58.353 INFO [stderr] 6 |     let v: Vec<i32> = Vec::new();
Dec 12 03:29:58.353 INFO [stderr]   |         ^ help: consider using `_v` instead
Dec 12 03:29:58.353 INFO [stderr]   |
Dec 12 03:29:58.353 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 03:29:58.353 INFO [stderr] 
Dec 12 03:29:58.353 INFO [stderr] warning: unused variable: `v`
Dec 12 03:29:58.353 INFO [stderr]  --> src/array.rs:7:9
Dec 12 03:29:58.353 INFO [stderr]   |
Dec 12 03:29:58.353 INFO [stderr] 7 |     let v: Vec<i32> = vec![];
Dec 12 03:29:58.353 INFO [stderr]   |         ^ help: consider using `_v` instead
Dec 12 03:29:58.353 INFO [stderr] 
Dec 12 03:29:58.353 INFO [stderr] warning: unused variable: `hello`
Dec 12 03:29:58.353 INFO [stderr]  --> src/str.rs:2:9
Dec 12 03:29:58.353 INFO [stderr]   |
Dec 12 03:29:58.353 INFO [stderr] 2 |     let hello = "hello world!";
Dec 12 03:29:58.353 INFO [stderr]   |         ^^^^^ help: consider using `_hello` instead
Dec 12 03:29:58.353 INFO [stderr] 
Dec 12 03:29:58.353 INFO [stderr] warning: unused variable: `hello`
Dec 12 03:29:58.353 INFO [stderr]  --> src/str.rs:4:9
Dec 12 03:29:58.353 INFO [stderr]   |
Dec 12 03:29:58.353 INFO [stderr] 4 |     let hello: &'static str = "hello world!";
Dec 12 03:29:58.353 INFO [stderr]   |         ^^^^^ help: consider using `_hello` instead
Dec 12 03:29:58.353 INFO [stderr] 
Dec 12 03:29:58.353 INFO [stderr] warning: value assigned to `hello` is never read
Dec 12 03:29:58.353 INFO [stderr]  --> src/str.rs:6:13
Dec 12 03:29:58.353 INFO [stderr]   |
Dec 12 03:29:58.353 INFO [stderr] 6 |     let mut hello = String::new();
Dec 12 03:29:58.353 INFO [stderr]   |             ^^^^^
Dec 12 03:29:58.353 INFO [stderr]   |
Dec 12 03:29:58.353 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 12 03:29:58.353 INFO [stderr] 
Dec 12 03:29:58.360 INFO [stderr] warning: unused variable: `point`
Dec 12 03:29:58.360 INFO [stderr]  --> src/struct.rs:9:9
Dec 12 03:29:58.360 INFO [stderr]   |
Dec 12 03:29:58.360 INFO [stderr] 9 |     let point = Point{x: 1, y: 2};
Dec 12 03:29:58.360 INFO [stderr]   |         ^^^^^ help: consider using `_point` instead
Dec 12 03:29:58.360 INFO [stderr] 
Dec 12 03:29:58.360 INFO [stderr] warning: unused variable: `green`
Dec 12 03:29:58.360 INFO [stderr]   --> src/struct.rs:14:20
Dec 12 03:29:58.360 INFO [stderr]    |
Dec 12 03:29:58.360 INFO [stderr] 14 |     let Color(red, green, blue) = android_green;
Dec 12 03:29:58.360 INFO [stderr]    |                    ^^^^^ help: consider using `_green` instead
Dec 12 03:29:58.360 INFO [stderr] 
Dec 12 03:29:58.360 INFO [stderr] warning: unused variable: `blue`
Dec 12 03:29:58.360 INFO [stderr]   --> src/struct.rs:14:27
Dec 12 03:29:58.360 INFO [stderr]    |
Dec 12 03:29:58.360 INFO [stderr] 14 |     let Color(red, green, blue) = android_green;
Dec 12 03:29:58.360 INFO [stderr]    |                           ^^^^ help: consider using `_blue` instead
Dec 12 03:29:58.360 INFO [stderr] 
Dec 12 03:29:58.388 INFO [stderr] warning: variable does not need to be mutable
Dec 12 03:29:58.388 INFO [stderr]  --> src/array.rs:2:9
Dec 12 03:29:58.388 INFO [stderr]   |
Dec 12 03:29:58.388 INFO [stderr] 2 |     let mut array: [i32; 3] = [0; 3];
Dec 12 03:29:58.388 INFO [stderr]   |         ----^^^^^
Dec 12 03:29:58.388 INFO [stderr]   |         |
Dec 12 03:29:58.388 INFO [stderr]   |         help: remove this `mut`
Dec 12 03:29:58.388 INFO [stderr]   |
Dec 12 03:29:58.388 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 12 03:29:58.388 INFO [stderr] 
Dec 12 03:29:58.404 INFO [stderr] warning: field is never used: `x`
Dec 12 03:29:58.408 INFO [stderr]  --> src/struct.rs:5:9
Dec 12 03:29:58.409 INFO [stderr]   |
Dec 12 03:29:58.409 INFO [stderr] 5 |         x: i32,
Dec 12 03:29:58.409 INFO [stderr]   |         ^^^^^^
Dec 12 03:29:58.409 INFO [stderr]   |
Dec 12 03:29:58.409 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 03:29:58.409 INFO [stderr] 
Dec 12 03:29:58.409 INFO [stderr] warning: field is never used: `y`
Dec 12 03:29:58.409 INFO [stderr]  --> src/struct.rs:6:9
Dec 12 03:29:58.409 INFO [stderr]   |
Dec 12 03:29:58.409 INFO [stderr] 6 |         y: i32,
Dec 12 03:29:58.409 INFO [stderr]   |         ^^^^^^
Dec 12 03:29:58.409 INFO [stderr] 
Dec 12 03:29:58.409 INFO [stderr] warning: field is never used: `x`
Dec 12 03:29:58.409 INFO [stderr]   --> src/struct.rs:45:9
Dec 12 03:29:58.409 INFO [stderr]    |
Dec 12 03:29:58.409 INFO [stderr] 45 |         x: i32,
Dec 12 03:29:58.409 INFO [stderr]    |         ^^^^^^
Dec 12 03:29:58.409 INFO [stderr] 
Dec 12 03:29:58.409 INFO [stderr] warning: type `Point_mut` should have a camel case name such as `PointMut`
Dec 12 03:29:58.409 INFO [stderr]   --> src/struct.rs:44:5
Dec 12 03:29:58.409 INFO [stderr]    |
Dec 12 03:29:58.409 INFO [stderr] 44 | /     struct Point_mut {
Dec 12 03:29:58.409 INFO [stderr] 45 | |         x: i32,
Dec 12 03:29:58.409 INFO [stderr] 46 | |         y: Cell<i32>,
Dec 12 03:29:58.409 INFO [stderr] 47 | |     }
Dec 12 03:29:58.409 INFO [stderr]    | |_____^
Dec 12 03:29:58.409 INFO [stderr]    |
Dec 12 03:29:58.409 INFO [stderr]    = note: #[warn(non_camel_case_types)] on by default
Dec 12 03:29:58.409 INFO [stderr] 
Dec 12 03:29:58.673 INFO [stderr] warning: unused variable: `v`
Dec 12 03:29:58.673 INFO [stderr]  --> src/array.rs:6:9
Dec 12 03:29:58.673 INFO [stderr]   |
Dec 12 03:29:58.673 INFO [stderr] 6 |     let v: Vec<i32> = Vec::new();
Dec 12 03:29:58.673 INFO [stderr]   |         ^ help: consider using `_v` instead
Dec 12 03:29:58.673 INFO [stderr]   |
Dec 12 03:29:58.673 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 03:29:58.673 INFO [stderr] 
Dec 12 03:29:58.673 INFO [stderr] warning: unused variable: `v`
Dec 12 03:29:58.674 INFO [stderr]  --> src/array.rs:7:9
Dec 12 03:29:58.674 INFO [stderr]   |
Dec 12 03:29:58.674 INFO [stderr] 7 |     let v: Vec<i32> = vec![];
Dec 12 03:29:58.674 INFO [stderr]   |         ^ help: consider using `_v` instead
Dec 12 03:29:58.674 INFO [stderr] 
Dec 12 03:29:58.674 INFO [stderr] warning: unused variable: `hello`
Dec 12 03:29:58.674 INFO [stderr]  --> src/str.rs:2:9
Dec 12 03:29:58.674 INFO [stderr]   |
Dec 12 03:29:58.674 INFO [stderr] 2 |     let hello = "hello world!";
Dec 12 03:29:58.674 INFO [stderr]   |         ^^^^^ help: consider using `_hello` instead
Dec 12 03:29:58.674 INFO [stderr] 
Dec 12 03:29:58.674 INFO [stderr] warning: unused variable: `hello`
Dec 12 03:29:58.674 INFO [stderr]  --> src/str.rs:4:9
Dec 12 03:29:58.676 INFO [stderr]   |
Dec 12 03:29:58.676 INFO [stderr] 4 |     let hello: &'static str = "hello world!";
Dec 12 03:29:58.676 INFO [stderr]   |         ^^^^^ help: consider using `_hello` instead
Dec 12 03:29:58.676 INFO [stderr] 
Dec 12 03:29:58.676 INFO [stderr] warning: value assigned to `hello` is never read
Dec 12 03:29:58.676 INFO [stderr]  --> src/str.rs:6:13
Dec 12 03:29:58.676 INFO [stderr]   |
Dec 12 03:29:58.676 INFO [stderr] 6 |     let mut hello = String::new();
Dec 12 03:29:58.676 INFO [stderr]   |             ^^^^^
Dec 12 03:29:58.676 INFO [stderr]   |
Dec 12 03:29:58.676 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 12 03:29:58.676 INFO [stderr] 
Dec 12 03:29:58.676 INFO [stderr] warning: unused variable: `point`
Dec 12 03:29:58.676 INFO [stderr]  --> src/struct.rs:9:9
Dec 12 03:29:58.676 INFO [stderr]   |
Dec 12 03:29:58.676 INFO [stderr] 9 |     let point = Point{x: 1, y: 2};
Dec 12 03:29:58.676 INFO [stderr]   |         ^^^^^ help: consider using `_point` instead
Dec 12 03:29:58.676 INFO [stderr] 
Dec 12 03:29:58.676 INFO [stderr] warning: unused variable: `green`
Dec 12 03:29:58.676 INFO [stderr]   --> src/struct.rs:14:20
Dec 12 03:29:58.677 INFO [stderr]    |
Dec 12 03:29:58.677 INFO [stderr] 14 |     let Color(red, green, blue) = android_green;
Dec 12 03:29:58.677 INFO [stderr]    |                    ^^^^^ help: consider using `_green` instead
Dec 12 03:29:58.677 INFO [stderr] 
Dec 12 03:29:58.677 INFO [stderr] warning: unused variable: `blue`
Dec 12 03:29:58.677 INFO [stderr]   --> src/struct.rs:14:27
Dec 12 03:29:58.677 INFO [stderr]    |
Dec 12 03:29:58.677 INFO [stderr] 14 |     let Color(red, green, blue) = android_green;
Dec 12 03:29:58.677 INFO [stderr]    |                           ^^^^ help: consider using `_blue` instead
Dec 12 03:29:58.677 INFO [stderr] 
Dec 12 03:29:58.698 INFO [stderr] warning: variable does not need to be mutable
Dec 12 03:29:58.698 INFO [stderr]  --> src/array.rs:2:9
Dec 12 03:29:58.698 INFO [stderr]   |
Dec 12 03:29:58.698 INFO [stderr] 2 |     let mut array: [i32; 3] = [0; 3];
Dec 12 03:29:58.698 INFO [stderr]   |         ----^^^^^
Dec 12 03:29:58.698 INFO [stderr]   |         |
Dec 12 03:29:58.698 INFO [stderr]   |         help: remove this `mut`
Dec 12 03:29:58.698 INFO [stderr]   |
Dec 12 03:29:58.698 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 12 03:29:58.698 INFO [stderr] 
Dec 12 03:29:58.726 INFO [stderr] warning: field is never used: `x`
Dec 12 03:29:58.726 INFO [stderr]  --> src/struct.rs:5:9
Dec 12 03:29:58.726 INFO [stderr]   |
Dec 12 03:29:58.726 INFO [stderr] 5 |         x: i32,
Dec 12 03:29:58.726 INFO [stderr]   |         ^^^^^^
Dec 12 03:29:58.726 INFO [stderr]   |
Dec 12 03:29:58.726 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 03:29:58.726 INFO [stderr] 
Dec 12 03:29:58.726 INFO [stderr] warning: field is never used: `y`
Dec 12 03:29:58.726 INFO [stderr]  --> src/struct.rs:6:9
Dec 12 03:29:58.726 INFO [stderr]   |
Dec 12 03:29:58.726 INFO [stderr] 6 |         y: i32,
Dec 12 03:29:58.726 INFO [stderr]   |         ^^^^^^
Dec 12 03:29:58.726 INFO [stderr] 
Dec 12 03:29:58.726 INFO [stderr] warning: field is never used: `x`
Dec 12 03:29:58.726 INFO [stderr]   --> src/struct.rs:45:9
Dec 12 03:29:58.726 INFO [stderr]    |
Dec 12 03:29:58.726 INFO [stderr] 45 |         x: i32,
Dec 12 03:29:58.726 INFO [stderr]    |         ^^^^^^
Dec 12 03:29:58.726 INFO [stderr] 
Dec 12 03:29:58.726 INFO [stderr] warning: type `Point_mut` should have a camel case name such as `PointMut`
Dec 12 03:29:58.726 INFO [stderr]   --> src/struct.rs:44:5
Dec 12 03:29:58.727 INFO [stderr]    |
Dec 12 03:29:58.727 INFO [stderr] 44 | /     struct Point_mut {
Dec 12 03:29:58.727 INFO [stderr] 45 | |         x: i32,
Dec 12 03:29:58.727 INFO [stderr] 46 | |         y: Cell<i32>,
Dec 12 03:29:58.727 INFO [stderr] 47 | |     }
Dec 12 03:29:58.727 INFO [stderr]    | |_____^
Dec 12 03:29:58.727 INFO [stderr]    |
Dec 12 03:29:58.727 INFO [stderr]    = note: #[warn(non_camel_case_types)] on by default
Dec 12 03:29:58.727 INFO [stderr] 
Dec 12 03:29:58.760 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
Dec 12 03:29:58.772 INFO [stderr] su: No module specific data is present
Dec 12 03:29:59.554 INFO running `"docker" "inspect" "52104e9fa6bb2ed4cf59125c8ff8f13801cb556907d7fa5a5da58e8a5eaab0fe"`
Dec 12 03:29:59.902 INFO running `"docker" "rm" "-f" "52104e9fa6bb2ed4cf59125c8ff8f13801cb556907d7fa5a5da58e8a5eaab0fe"`
Dec 12 03:30:00.169 INFO [stdout] 52104e9fa6bb2ed4cf59125c8ff8f13801cb556907d7fa5a5da58e8a5eaab0fe