Oct 27 08:25:26.090 INFO checking amitdash291/rust_lifetimes against try#19f01b935b91481fd445b16b533d2f87661bf12e for pr-55192-2
Oct 27 08:25:26.091 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192-2/worker-5/try#19f01b935b91481fd445b16b533d2f87661bf12e:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-5/pr-55192-2/try#19f01b935b91481fd445b16b533d2f87661bf12e:/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 +19f01b935b91481fd445b16b533d2f87661bf12e-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"`
Oct 27 08:25:26.559 INFO blam! 13d9b2233b85458a9caeb864109034ee1a8b40ed884b56ad038253132a2e41a3
Oct 27 08:25:26.562 INFO running `"docker" "start" "-a" "13d9b2233b85458a9caeb864109034ee1a8b40ed884b56ad038253132a2e41a3"`
Oct 27 08:25:27.802 INFO kablam! usermod: no changes
Oct 27 08:25:27.863 INFO kablam!     Checking lifetime_demo v0.1.0 (/source)
Oct 27 08:25:28.615 INFO kablam! warning: variable `result_ref` is assigned to, but never used
Oct 27 08:25:28.615 INFO kablam!  --> src/main.rs:4:9
Oct 27 08:25:28.615 INFO kablam!   |
Oct 27 08:25:28.615 INFO kablam! 4 |     let result_ref;
Oct 27 08:25:28.615 INFO kablam!   |         ^^^^^^^^^^
Oct 27 08:25:28.615 INFO kablam!   |
Oct 27 08:25:28.615 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 27 08:25:28.615 INFO kablam!   = note: consider using `_result_ref` instead
Oct 27 08:25:28.615 INFO kablam! 
Oct 27 08:25:28.615 INFO kablam! warning: value assigned to `result_ref` is never read
Oct 27 08:25:28.615 INFO kablam!  --> src/main.rs:6:5
Oct 27 08:25:28.615 INFO kablam!   |
Oct 27 08:25:28.615 INFO kablam! 6 |     result_ref = which_is_greater(&a, &b)
Oct 27 08:25:28.615 INFO kablam!   |     ^^^^^^^^^^
Oct 27 08:25:28.615 INFO kablam!   |
Oct 27 08:25:28.615 INFO kablam!   = note: #[warn(unused_assignments)] on by default
Oct 27 08:25:28.615 INFO kablam! 
Oct 27 08:25:28.615 INFO kablam! warning: unused variable: `a`
Oct 27 08:25:28.615 INFO kablam!   --> src/main.rs:25:29
Oct 27 08:25:28.615 INFO kablam!    |
Oct 27 08:25:28.615 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Oct 27 08:25:28.615 INFO kablam!    |                             ^ help: consider using `_a` instead
Oct 27 08:25:28.615 INFO kablam! 
Oct 27 08:25:28.615 INFO kablam! warning: unused variable: `b`
Oct 27 08:25:28.615 INFO kablam!   --> src/main.rs:25:41
Oct 27 08:25:28.615 INFO kablam!    |
Oct 27 08:25:28.615 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Oct 27 08:25:28.615 INFO kablam!    |                                         ^ help: consider using `_b` instead
Oct 27 08:25:28.615 INFO kablam! 
Oct 27 08:25:28.615 INFO kablam! warning: unused variable: `vec1`
Oct 27 08:25:28.615 INFO kablam!   --> src/main.rs:37:13
Oct 27 08:25:28.615 INFO kablam!    |
Oct 27 08:25:28.615 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Oct 27 08:25:28.615 INFO kablam!    |             ^^^^ help: consider using `_vec1` instead
Oct 27 08:25:28.615 INFO kablam! 
Oct 27 08:25:28.615 INFO kablam! warning: variable does not need to be mutable
Oct 27 08:25:28.615 INFO kablam!   --> src/main.rs:37:9
Oct 27 08:25:28.615 INFO kablam!    |
Oct 27 08:25:28.615 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Oct 27 08:25:28.615 INFO kablam!    |         ----^^^^
Oct 27 08:25:28.615 INFO kablam!    |         |
Oct 27 08:25:28.615 INFO kablam!    |         help: remove this `mut`
Oct 27 08:25:28.615 INFO kablam!    |
Oct 27 08:25:28.616 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 27 08:25:28.616 INFO kablam! 
Oct 27 08:25:28.616 INFO kablam! warning: function is never used: `test_mut_ref`
Oct 27 08:25:28.616 INFO kablam!   --> src/main.rs:34:1
Oct 27 08:25:28.616 INFO kablam!    |
Oct 27 08:25:28.616 INFO kablam! 34 | fn test_mut_ref() {
Oct 27 08:25:28.616 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Oct 27 08:25:28.616 INFO kablam!    |
Oct 27 08:25:28.616 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 27 08:25:28.616 INFO kablam! 
Oct 27 08:25:28.616 INFO kablam! warning: function is never used: `copy_vec`
Oct 27 08:25:28.616 INFO kablam!   --> src/main.rs:40:1
Oct 27 08:25:28.616 INFO kablam!    |
Oct 27 08:25:28.616 INFO kablam! 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Oct 27 08:25:28.616 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:28.616 INFO kablam! 
Oct 27 08:25:28.777 INFO kablam! warning: variable `result_ref` is assigned to, but never used
Oct 27 08:25:28.777 INFO kablam!  --> src/main.rs:4:9
Oct 27 08:25:28.777 INFO kablam!   |
Oct 27 08:25:28.777 INFO kablam! 4 |     let result_ref;
Oct 27 08:25:28.777 INFO kablam!   |         ^^^^^^^^^^
Oct 27 08:25:28.777 INFO kablam!   |
Oct 27 08:25:28.777 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 27 08:25:28.777 INFO kablam!   = note: consider using `_result_ref` instead
Oct 27 08:25:28.777 INFO kablam! 
Oct 27 08:25:28.777 INFO kablam! warning: value assigned to `result_ref` is never read
Oct 27 08:25:28.777 INFO kablam!  --> src/main.rs:6:5
Oct 27 08:25:28.777 INFO kablam!   |
Oct 27 08:25:28.777 INFO kablam! 6 |     result_ref = which_is_greater(&a, &b)
Oct 27 08:25:28.777 INFO kablam!   |     ^^^^^^^^^^
Oct 27 08:25:28.777 INFO kablam!   |
Oct 27 08:25:28.777 INFO kablam!   = note: #[warn(unused_assignments)] on by default
Oct 27 08:25:28.777 INFO kablam! 
Oct 27 08:25:28.777 INFO kablam! warning: unused variable: `a`
Oct 27 08:25:28.777 INFO kablam!   --> src/main.rs:25:29
Oct 27 08:25:28.777 INFO kablam!    |
Oct 27 08:25:28.777 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Oct 27 08:25:28.777 INFO kablam!    |                             ^ help: consider using `_a` instead
Oct 27 08:25:28.777 INFO kablam! 
Oct 27 08:25:28.777 INFO kablam! warning: unused variable: `b`
Oct 27 08:25:28.777 INFO kablam!   --> src/main.rs:25:41
Oct 27 08:25:28.777 INFO kablam!    |
Oct 27 08:25:28.777 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Oct 27 08:25:28.777 INFO kablam!    |                                         ^ help: consider using `_b` instead
Oct 27 08:25:28.777 INFO kablam! 
Oct 27 08:25:28.777 INFO kablam! warning: unused variable: `vec1`
Oct 27 08:25:28.777 INFO kablam!   --> src/main.rs:37:13
Oct 27 08:25:28.782 INFO kablam!    |
Oct 27 08:25:28.782 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Oct 27 08:25:28.782 INFO kablam!    |             ^^^^ help: consider using `_vec1` instead
Oct 27 08:25:28.782 INFO kablam! 
Oct 27 08:25:28.782 INFO kablam! warning: variable does not need to be mutable
Oct 27 08:25:28.782 INFO kablam!   --> src/main.rs:37:9
Oct 27 08:25:28.782 INFO kablam!    |
Oct 27 08:25:28.782 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Oct 27 08:25:28.782 INFO kablam!    |         ----^^^^
Oct 27 08:25:28.782 INFO kablam!    |         |
Oct 27 08:25:28.782 INFO kablam!    |         help: remove this `mut`
Oct 27 08:25:28.782 INFO kablam!    |
Oct 27 08:25:28.782 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 27 08:25:28.782 INFO kablam! 
Oct 27 08:25:28.784 INFO kablam! warning: function is never used: `test_mut_ref`
Oct 27 08:25:28.784 INFO kablam!   --> src/main.rs:34:1
Oct 27 08:25:28.784 INFO kablam!    |
Oct 27 08:25:28.784 INFO kablam! 34 | fn test_mut_ref() {
Oct 27 08:25:28.784 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Oct 27 08:25:28.784 INFO kablam!    |
Oct 27 08:25:28.784 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 27 08:25:28.784 INFO kablam! 
Oct 27 08:25:28.784 INFO kablam! warning: function is never used: `copy_vec`
Oct 27 08:25:28.784 INFO kablam!   --> src/main.rs:40:1
Oct 27 08:25:28.784 INFO kablam!    |
Oct 27 08:25:28.784 INFO kablam! 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Oct 27 08:25:28.784 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 27 08:25:28.784 INFO kablam! 
Oct 27 08:25:28.843 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
Oct 27 08:25:28.843 INFO kablam! su: No module specific data is present
Oct 27 08:25:29.794 INFO running `"docker" "rm" "-f" "13d9b2233b85458a9caeb864109034ee1a8b40ed884b56ad038253132a2e41a3"`
Oct 27 08:25:30.023 INFO blam! 13d9b2233b85458a9caeb864109034ee1a8b40ed884b56ad038253132a2e41a3