Nov 01 08:46:09.213 INFO checking amitdash291/rust_lifetimes against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 08:46:09.213 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-4/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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"`
Nov 01 08:46:09.928 INFO blam! d2261b349715f2147128dd5db68f90c025a35dd7a6dea6f898961e2f2b1d25ee
Nov 01 08:46:09.936 INFO running `"docker" "start" "-a" "d2261b349715f2147128dd5db68f90c025a35dd7a6dea6f898961e2f2b1d25ee"`
Nov 01 08:46:10.781 INFO kablam! usermod: no changes
Nov 01 08:46:10.849 INFO kablam!     Checking lifetime_demo v0.1.0 (/source)
Nov 01 08:46:11.216 INFO kablam! warning: variable `result_ref` is assigned to, but never used
Nov 01 08:46:11.217 INFO kablam!  --> src/main.rs:4:9
Nov 01 08:46:11.217 INFO kablam!   |
Nov 01 08:46:11.217 INFO kablam! 4 |     let result_ref;
Nov 01 08:46:11.218 INFO kablam!   |         ^^^^^^^^^^
Nov 01 08:46:11.218 INFO kablam!   |
Nov 01 08:46:11.218 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 01 08:46:11.218 INFO kablam!   = note: consider using `_result_ref` instead
Nov 01 08:46:11.218 INFO kablam! 
Nov 01 08:46:11.218 INFO kablam! warning: value assigned to `result_ref` is never read
Nov 01 08:46:11.219 INFO kablam!  --> src/main.rs:6:5
Nov 01 08:46:11.219 INFO kablam!   |
Nov 01 08:46:11.219 INFO kablam! 6 |     result_ref = which_is_greater(&a, &b)
Nov 01 08:46:11.219 INFO kablam!   |     ^^^^^^^^^^
Nov 01 08:46:11.219 INFO kablam!   |
Nov 01 08:46:11.219 INFO kablam!   = note: #[warn(unused_assignments)] on by default
Nov 01 08:46:11.220 INFO kablam! 
Nov 01 08:46:11.220 INFO kablam! warning: unused variable: `a`
Nov 01 08:46:11.220 INFO kablam!   --> src/main.rs:25:29
Nov 01 08:46:11.220 INFO kablam!    |
Nov 01 08:46:11.220 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 01 08:46:11.220 INFO kablam!    |                             ^ help: consider using `_a` instead
Nov 01 08:46:11.221 INFO kablam! 
Nov 01 08:46:11.221 INFO kablam! warning: unused variable: `b`
Nov 01 08:46:11.221 INFO kablam!   --> src/main.rs:25:41
Nov 01 08:46:11.221 INFO kablam!    |
Nov 01 08:46:11.222 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 01 08:46:11.222 INFO kablam!    |                                         ^ help: consider using `_b` instead
Nov 01 08:46:11.222 INFO kablam! 
Nov 01 08:46:11.222 INFO kablam! warning: unused variable: `vec1`
Nov 01 08:46:11.222 INFO kablam!   --> src/main.rs:37:13
Nov 01 08:46:11.222 INFO kablam!    |
Nov 01 08:46:11.224 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 01 08:46:11.224 INFO kablam!    |             ^^^^ help: consider using `_vec1` instead
Nov 01 08:46:11.224 INFO kablam! 
Nov 01 08:46:11.224 INFO kablam! warning: variable does not need to be mutable
Nov 01 08:46:11.224 INFO kablam!   --> src/main.rs:37:9
Nov 01 08:46:11.224 INFO kablam!    |
Nov 01 08:46:11.224 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 01 08:46:11.224 INFO kablam!    |         ----^^^^
Nov 01 08:46:11.224 INFO kablam!    |         |
Nov 01 08:46:11.224 INFO kablam!    |         help: remove this `mut`
Nov 01 08:46:11.224 INFO kablam!    |
Nov 01 08:46:11.224 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 08:46:11.224 INFO kablam! 
Nov 01 08:46:11.224 INFO kablam! warning: function is never used: `test_mut_ref`
Nov 01 08:46:11.224 INFO kablam!   --> src/main.rs:34:1
Nov 01 08:46:11.224 INFO kablam!    |
Nov 01 08:46:11.224 INFO kablam! 34 | fn test_mut_ref() {
Nov 01 08:46:11.224 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Nov 01 08:46:11.224 INFO kablam!    |
Nov 01 08:46:11.224 INFO kablam!    = note: #[warn(dead_code)] on by default
Nov 01 08:46:11.224 INFO kablam! 
Nov 01 08:46:11.224 INFO kablam! warning: function is never used: `copy_vec`
Nov 01 08:46:11.224 INFO kablam!   --> src/main.rs:40:1
Nov 01 08:46:11.224 INFO kablam!    |
Nov 01 08:46:11.224 INFO kablam! 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Nov 01 08:46:11.224 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 08:46:11.224 INFO kablam! 
Nov 01 08:46:11.383 INFO kablam! warning: variable `result_ref` is assigned to, but never used
Nov 01 08:46:11.383 INFO kablam!  --> src/main.rs:4:9
Nov 01 08:46:11.383 INFO kablam!   |
Nov 01 08:46:11.383 INFO kablam! 4 |     let result_ref;
Nov 01 08:46:11.383 INFO kablam!   |         ^^^^^^^^^^
Nov 01 08:46:11.383 INFO kablam!   |
Nov 01 08:46:11.383 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 01 08:46:11.383 INFO kablam!   = note: consider using `_result_ref` instead
Nov 01 08:46:11.383 INFO kablam! 
Nov 01 08:46:11.383 INFO kablam! warning: value assigned to `result_ref` is never read
Nov 01 08:46:11.383 INFO kablam!  --> src/main.rs:6:5
Nov 01 08:46:11.383 INFO kablam!   |
Nov 01 08:46:11.383 INFO kablam! 6 |     result_ref = which_is_greater(&a, &b)
Nov 01 08:46:11.384 INFO kablam!   |     ^^^^^^^^^^
Nov 01 08:46:11.384 INFO kablam!   |
Nov 01 08:46:11.384 INFO kablam!   = note: #[warn(unused_assignments)] on by default
Nov 01 08:46:11.384 INFO kablam! 
Nov 01 08:46:11.384 INFO kablam! warning: unused variable: `a`
Nov 01 08:46:11.384 INFO kablam!   --> src/main.rs:25:29
Nov 01 08:46:11.384 INFO kablam!    |
Nov 01 08:46:11.384 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 01 08:46:11.384 INFO kablam!    |                             ^ help: consider using `_a` instead
Nov 01 08:46:11.384 INFO kablam! 
Nov 01 08:46:11.384 INFO kablam! warning: unused variable: `b`
Nov 01 08:46:11.384 INFO kablam!   --> src/main.rs:25:41
Nov 01 08:46:11.384 INFO kablam!    |
Nov 01 08:46:11.384 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 01 08:46:11.384 INFO kablam!    |                                         ^ help: consider using `_b` instead
Nov 01 08:46:11.384 INFO kablam! 
Nov 01 08:46:11.384 INFO kablam! warning: unused variable: `vec1`
Nov 01 08:46:11.384 INFO kablam!   --> src/main.rs:37:13
Nov 01 08:46:11.384 INFO kablam!    |
Nov 01 08:46:11.384 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 01 08:46:11.384 INFO kablam!    |             ^^^^ help: consider using `_vec1` instead
Nov 01 08:46:11.384 INFO kablam! 
Nov 01 08:46:11.389 INFO kablam! warning: variable does not need to be mutable
Nov 01 08:46:11.389 INFO kablam!   --> src/main.rs:37:9
Nov 01 08:46:11.389 INFO kablam!    |
Nov 01 08:46:11.389 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 01 08:46:11.389 INFO kablam!    |         ----^^^^
Nov 01 08:46:11.389 INFO kablam!    |         |
Nov 01 08:46:11.389 INFO kablam!    |         help: remove this `mut`
Nov 01 08:46:11.389 INFO kablam!    |
Nov 01 08:46:11.389 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 08:46:11.389 INFO kablam! 
Nov 01 08:46:11.389 INFO kablam! warning: function is never used: `test_mut_ref`
Nov 01 08:46:11.389 INFO kablam!   --> src/main.rs:34:1
Nov 01 08:46:11.389 INFO kablam!    |
Nov 01 08:46:11.389 INFO kablam! 34 | fn test_mut_ref() {
Nov 01 08:46:11.389 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Nov 01 08:46:11.389 INFO kablam!    |
Nov 01 08:46:11.389 INFO kablam!    = note: #[warn(dead_code)] on by default
Nov 01 08:46:11.389 INFO kablam! 
Nov 01 08:46:11.389 INFO kablam! warning: function is never used: `copy_vec`
Nov 01 08:46:11.389 INFO kablam!   --> src/main.rs:40:1
Nov 01 08:46:11.389 INFO kablam!    |
Nov 01 08:46:11.389 INFO kablam! 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Nov 01 08:46:11.389 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 08:46:11.389 INFO kablam! 
Nov 01 08:46:11.405 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
Nov 01 08:46:11.410 INFO kablam! su: No module specific data is present
Nov 01 08:46:11.776 INFO running `"docker" "rm" "-f" "d2261b349715f2147128dd5db68f90c025a35dd7a6dea6f898961e2f2b1d25ee"`
Nov 01 08:46:12.017 INFO blam! d2261b349715f2147128dd5db68f90c025a35dd7a6dea6f898961e2f2b1d25ee