Oct 13 01:18:17.748 INFO checking amitdash291/rust_lifetimes against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 01:18:17.748 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-1/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-1/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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 13 01:18:18.042 INFO blam! ef4ea32272fb23086198a8dc1d14e924d2b5c03235472e0ee300720d3e506ffa
Oct 13 01:18:18.044 INFO running `"docker" "start" "-a" "ef4ea32272fb23086198a8dc1d14e924d2b5c03235472e0ee300720d3e506ffa"`
Oct 13 01:18:19.486 INFO kablam! usermod: no changes
Oct 13 01:18:19.560 INFO kablam!     Checking lifetime_demo v0.1.0 (/source)
Oct 13 01:18:20.297 INFO kablam! warning: variable `result_ref` is assigned to, but never used
Oct 13 01:18:20.297 INFO kablam!  --> src/main.rs:4:9
Oct 13 01:18:20.297 INFO kablam!   |
Oct 13 01:18:20.297 INFO kablam! 4 |     let result_ref;
Oct 13 01:18:20.297 INFO kablam!   |         ^^^^^^^^^^
Oct 13 01:18:20.297 INFO kablam!   |
Oct 13 01:18:20.297 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 13 01:18:20.297 INFO kablam!   = note: consider using `_result_ref` instead
Oct 13 01:18:20.297 INFO kablam! 
Oct 13 01:18:20.297 INFO kablam! warning: value assigned to `result_ref` is never read
Oct 13 01:18:20.297 INFO kablam!  --> src/main.rs:6:5
Oct 13 01:18:20.297 INFO kablam!   |
Oct 13 01:18:20.297 INFO kablam! 6 |     result_ref = which_is_greater(&a, &b)
Oct 13 01:18:20.297 INFO kablam!   |     ^^^^^^^^^^
Oct 13 01:18:20.297 INFO kablam!   |
Oct 13 01:18:20.297 INFO kablam!   = note: #[warn(unused_assignments)] on by default
Oct 13 01:18:20.297 INFO kablam! 
Oct 13 01:18:20.297 INFO kablam! warning: unused variable: `a`
Oct 13 01:18:20.297 INFO kablam!   --> src/main.rs:25:29
Oct 13 01:18:20.297 INFO kablam!    |
Oct 13 01:18:20.297 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Oct 13 01:18:20.297 INFO kablam!    |                             ^ help: consider using `_a` instead
Oct 13 01:18:20.297 INFO kablam! 
Oct 13 01:18:20.297 INFO kablam! warning: unused variable: `b`
Oct 13 01:18:20.297 INFO kablam!   --> src/main.rs:25:41
Oct 13 01:18:20.297 INFO kablam!    |
Oct 13 01:18:20.297 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Oct 13 01:18:20.297 INFO kablam!    |                                         ^ help: consider using `_b` instead
Oct 13 01:18:20.297 INFO kablam! 
Oct 13 01:18:20.297 INFO kablam! warning: unused variable: `vec1`
Oct 13 01:18:20.297 INFO kablam!   --> src/main.rs:37:13
Oct 13 01:18:20.297 INFO kablam!    |
Oct 13 01:18:20.297 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Oct 13 01:18:20.297 INFO kablam!    |             ^^^^ help: consider using `_vec1` instead
Oct 13 01:18:20.297 INFO kablam! 
Oct 13 01:18:20.297 INFO kablam! warning: variable does not need to be mutable
Oct 13 01:18:20.297 INFO kablam!   --> src/main.rs:37:9
Oct 13 01:18:20.297 INFO kablam!    |
Oct 13 01:18:20.297 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Oct 13 01:18:20.297 INFO kablam!    |         ----^^^^
Oct 13 01:18:20.297 INFO kablam!    |         |
Oct 13 01:18:20.297 INFO kablam!    |         help: remove this `mut`
Oct 13 01:18:20.297 INFO kablam!    |
Oct 13 01:18:20.297 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 01:18:20.297 INFO kablam! 
Oct 13 01:18:20.297 INFO kablam! warning: function is never used: `test_mut_ref`
Oct 13 01:18:20.297 INFO kablam!   --> src/main.rs:34:1
Oct 13 01:18:20.297 INFO kablam!    |
Oct 13 01:18:20.297 INFO kablam! 34 | fn test_mut_ref() {
Oct 13 01:18:20.298 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Oct 13 01:18:20.298 INFO kablam!    |
Oct 13 01:18:20.298 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 13 01:18:20.298 INFO kablam! 
Oct 13 01:18:20.298 INFO kablam! warning: function is never used: `copy_vec`
Oct 13 01:18:20.298 INFO kablam!   --> src/main.rs:40:1
Oct 13 01:18:20.298 INFO kablam!    |
Oct 13 01:18:20.298 INFO kablam! 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Oct 13 01:18:20.298 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 01:18:20.298 INFO kablam! 
Oct 13 01:18:20.408 INFO kablam! warning: variable `result_ref` is assigned to, but never used
Oct 13 01:18:20.408 INFO kablam!  --> src/main.rs:4:9
Oct 13 01:18:20.408 INFO kablam!   |
Oct 13 01:18:20.408 INFO kablam! 4 |     let result_ref;
Oct 13 01:18:20.408 INFO kablam!   |         ^^^^^^^^^^
Oct 13 01:18:20.408 INFO kablam!   |
Oct 13 01:18:20.408 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 13 01:18:20.408 INFO kablam!   = note: consider using `_result_ref` instead
Oct 13 01:18:20.408 INFO kablam! 
Oct 13 01:18:20.408 INFO kablam! warning: value assigned to `result_ref` is never read
Oct 13 01:18:20.408 INFO kablam!  --> src/main.rs:6:5
Oct 13 01:18:20.408 INFO kablam!   |
Oct 13 01:18:20.408 INFO kablam! 6 |     result_ref = which_is_greater(&a, &b)
Oct 13 01:18:20.408 INFO kablam!   |     ^^^^^^^^^^
Oct 13 01:18:20.408 INFO kablam!   |
Oct 13 01:18:20.408 INFO kablam!   = note: #[warn(unused_assignments)] on by default
Oct 13 01:18:20.408 INFO kablam! 
Oct 13 01:18:20.408 INFO kablam! warning: unused variable: `a`
Oct 13 01:18:20.408 INFO kablam!   --> src/main.rs:25:29
Oct 13 01:18:20.408 INFO kablam!    |
Oct 13 01:18:20.408 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Oct 13 01:18:20.408 INFO kablam!    |                             ^ help: consider using `_a` instead
Oct 13 01:18:20.408 INFO kablam! 
Oct 13 01:18:20.408 INFO kablam! warning: unused variable: `b`
Oct 13 01:18:20.408 INFO kablam!   --> src/main.rs:25:41
Oct 13 01:18:20.408 INFO kablam!    |
Oct 13 01:18:20.408 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Oct 13 01:18:20.408 INFO kablam!    |                                         ^ help: consider using `_b` instead
Oct 13 01:18:20.408 INFO kablam! 
Oct 13 01:18:20.408 INFO kablam! warning: unused variable: `vec1`
Oct 13 01:18:20.408 INFO kablam!   --> src/main.rs:37:13
Oct 13 01:18:20.408 INFO kablam!    |
Oct 13 01:18:20.408 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Oct 13 01:18:20.408 INFO kablam!    |             ^^^^ help: consider using `_vec1` instead
Oct 13 01:18:20.408 INFO kablam! 
Oct 13 01:18:20.408 INFO kablam! warning: variable does not need to be mutable
Oct 13 01:18:20.408 INFO kablam!   --> src/main.rs:37:9
Oct 13 01:18:20.408 INFO kablam!    |
Oct 13 01:18:20.408 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Oct 13 01:18:20.408 INFO kablam!    |         ----^^^^
Oct 13 01:18:20.408 INFO kablam!    |         |
Oct 13 01:18:20.408 INFO kablam!    |         help: remove this `mut`
Oct 13 01:18:20.408 INFO kablam!    |
Oct 13 01:18:20.408 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 01:18:20.408 INFO kablam! 
Oct 13 01:18:20.409 INFO kablam! warning: function is never used: `test_mut_ref`
Oct 13 01:18:20.409 INFO kablam!   --> src/main.rs:34:1
Oct 13 01:18:20.409 INFO kablam!    |
Oct 13 01:18:20.409 INFO kablam! 34 | fn test_mut_ref() {
Oct 13 01:18:20.409 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Oct 13 01:18:20.409 INFO kablam!    |
Oct 13 01:18:20.409 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 13 01:18:20.409 INFO kablam! 
Oct 13 01:18:20.409 INFO kablam! warning: function is never used: `copy_vec`
Oct 13 01:18:20.409 INFO kablam!   --> src/main.rs:40:1
Oct 13 01:18:20.409 INFO kablam!    |
Oct 13 01:18:20.409 INFO kablam! 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Oct 13 01:18:20.409 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 01:18:20.409 INFO kablam! 
Oct 13 01:18:20.436 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
Oct 13 01:18:20.436 INFO kablam! su: No module specific data is present
Oct 13 01:18:21.212 INFO running `"docker" "rm" "-f" "ef4ea32272fb23086198a8dc1d14e924d2b5c03235472e0ee300720d3e506ffa"`
Oct 13 01:18:21.522 INFO blam! ef4ea32272fb23086198a8dc1d14e924d2b5c03235472e0ee300720d3e506ffa