Nov 02 18:17:40.299 INFO checking amitdash291/rust_lifetimes against try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7 for pr-55517
Nov 02 18:17:40.299 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55517/worker-3/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55517/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/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 +dc8b02d6f1e93f212fc39844ea688b634b4a03c7-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 02 18:17:40.840 INFO blam! b267854c4ca45ae87e62a649124153fdd3a2e7960b985fe3fee03b07146a0926
Nov 02 18:17:40.847 INFO running `"docker" "start" "-a" "b267854c4ca45ae87e62a649124153fdd3a2e7960b985fe3fee03b07146a0926"`
Nov 02 18:17:41.796 INFO kablam! usermod: no changes
Nov 02 18:17:41.876 INFO kablam!     Checking lifetime_demo v0.1.0 (/source)
Nov 02 18:17:42.476 INFO kablam! warning: variable `result_ref` is assigned to, but never used
Nov 02 18:17:42.476 INFO kablam!  --> src/main.rs:4:9
Nov 02 18:17:42.476 INFO kablam!   |
Nov 02 18:17:42.476 INFO kablam! 4 |     let result_ref;
Nov 02 18:17:42.476 INFO kablam!   |         ^^^^^^^^^^
Nov 02 18:17:42.476 INFO kablam!   |
Nov 02 18:17:42.476 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 02 18:17:42.476 INFO kablam!   = note: consider using `_result_ref` instead
Nov 02 18:17:42.476 INFO kablam! 
Nov 02 18:17:42.476 INFO kablam! warning: value assigned to `result_ref` is never read
Nov 02 18:17:42.476 INFO kablam!  --> src/main.rs:6:5
Nov 02 18:17:42.476 INFO kablam!   |
Nov 02 18:17:42.476 INFO kablam! 6 |     result_ref = which_is_greater(&a, &b)
Nov 02 18:17:42.476 INFO kablam!   |     ^^^^^^^^^^
Nov 02 18:17:42.476 INFO kablam!   |
Nov 02 18:17:42.476 INFO kablam!   = note: #[warn(unused_assignments)] on by default
Nov 02 18:17:42.476 INFO kablam! 
Nov 02 18:17:42.476 INFO kablam! warning: unused variable: `a`
Nov 02 18:17:42.476 INFO kablam!   --> src/main.rs:25:29
Nov 02 18:17:42.476 INFO kablam!    |
Nov 02 18:17:42.476 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 02 18:17:42.476 INFO kablam!    |                             ^ help: consider using `_a` instead
Nov 02 18:17:42.476 INFO kablam! 
Nov 02 18:17:42.476 INFO kablam! warning: unused variable: `b`
Nov 02 18:17:42.476 INFO kablam!   --> src/main.rs:25:41
Nov 02 18:17:42.476 INFO kablam!    |
Nov 02 18:17:42.476 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 02 18:17:42.476 INFO kablam!    |                                         ^ help: consider using `_b` instead
Nov 02 18:17:42.476 INFO kablam! 
Nov 02 18:17:42.476 INFO kablam! warning: unused variable: `vec1`
Nov 02 18:17:42.476 INFO kablam!   --> src/main.rs:37:13
Nov 02 18:17:42.476 INFO kablam!    |
Nov 02 18:17:42.476 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 02 18:17:42.476 INFO kablam!    |             ^^^^ help: consider using `_vec1` instead
Nov 02 18:17:42.476 INFO kablam! 
Nov 02 18:17:42.476 INFO kablam! warning: variable does not need to be mutable
Nov 02 18:17:42.476 INFO kablam!   --> src/main.rs:37:9
Nov 02 18:17:42.476 INFO kablam!    |
Nov 02 18:17:42.476 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 02 18:17:42.476 INFO kablam!    |         ----^^^^
Nov 02 18:17:42.476 INFO kablam!    |         |
Nov 02 18:17:42.476 INFO kablam!    |         help: remove this `mut`
Nov 02 18:17:42.476 INFO kablam!    |
Nov 02 18:17:42.477 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 02 18:17:42.477 INFO kablam! 
Nov 02 18:17:42.492 INFO kablam! warning: function is never used: `test_mut_ref`
Nov 02 18:17:42.493 INFO kablam!   --> src/main.rs:34:1
Nov 02 18:17:42.493 INFO kablam!    |
Nov 02 18:17:42.493 INFO kablam! 34 | fn test_mut_ref() {
Nov 02 18:17:42.494 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Nov 02 18:17:42.494 INFO kablam!    |
Nov 02 18:17:42.494 INFO kablam!    = note: #[warn(dead_code)] on by default
Nov 02 18:17:42.494 INFO kablam! 
Nov 02 18:17:42.495 INFO kablam! warning: function is never used: `copy_vec`
Nov 02 18:17:42.495 INFO kablam!   --> src/main.rs:40:1
Nov 02 18:17:42.495 INFO kablam!    |
Nov 02 18:17:42.495 INFO kablam! 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Nov 02 18:17:42.496 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 02 18:17:42.496 INFO kablam! 
Nov 02 18:17:42.593 INFO kablam! warning: variable `result_ref` is assigned to, but never used
Nov 02 18:17:42.593 INFO kablam!  --> src/main.rs:4:9
Nov 02 18:17:42.593 INFO kablam!   |
Nov 02 18:17:42.594 INFO kablam! 4 |     let result_ref;
Nov 02 18:17:42.594 INFO kablam!   |         ^^^^^^^^^^
Nov 02 18:17:42.594 INFO kablam!   |
Nov 02 18:17:42.594 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 02 18:17:42.595 INFO kablam!   = note: consider using `_result_ref` instead
Nov 02 18:17:42.595 INFO kablam! 
Nov 02 18:17:42.595 INFO kablam! warning: value assigned to `result_ref` is never read
Nov 02 18:17:42.596 INFO kablam!  --> src/main.rs:6:5
Nov 02 18:17:42.596 INFO kablam!   |
Nov 02 18:17:42.596 INFO kablam! 6 |     result_ref = which_is_greater(&a, &b)
Nov 02 18:17:42.597 INFO kablam!   |     ^^^^^^^^^^
Nov 02 18:17:42.597 INFO kablam!   |
Nov 02 18:17:42.597 INFO kablam!   = note: #[warn(unused_assignments)] on by default
Nov 02 18:17:42.598 INFO kablam! 
Nov 02 18:17:42.598 INFO kablam! warning: unused variable: `a`
Nov 02 18:17:42.598 INFO kablam!   --> src/main.rs:25:29
Nov 02 18:17:42.598 INFO kablam!    |
Nov 02 18:17:42.599 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 02 18:17:42.599 INFO kablam!    |                             ^ help: consider using `_a` instead
Nov 02 18:17:42.599 INFO kablam! 
Nov 02 18:17:42.600 INFO kablam! warning: unused variable: `b`
Nov 02 18:17:42.600 INFO kablam!   --> src/main.rs:25:41
Nov 02 18:17:42.600 INFO kablam!    |
Nov 02 18:17:42.600 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 02 18:17:42.601 INFO kablam!    |                                         ^ help: consider using `_b` instead
Nov 02 18:17:42.601 INFO kablam! 
Nov 02 18:17:42.601 INFO kablam! warning: unused variable: `vec1`
Nov 02 18:17:42.602 INFO kablam!   --> src/main.rs:37:13
Nov 02 18:17:42.602 INFO kablam!    |
Nov 02 18:17:42.602 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 02 18:17:42.602 INFO kablam!    |             ^^^^ help: consider using `_vec1` instead
Nov 02 18:17:42.603 INFO kablam! 
Nov 02 18:17:42.603 INFO kablam! warning: variable does not need to be mutable
Nov 02 18:17:42.603 INFO kablam!   --> src/main.rs:37:9
Nov 02 18:17:42.603 INFO kablam!    |
Nov 02 18:17:42.604 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 02 18:17:42.604 INFO kablam!    |         ----^^^^
Nov 02 18:17:42.604 INFO kablam!    |         |
Nov 02 18:17:42.605 INFO kablam!    |         help: remove this `mut`
Nov 02 18:17:42.605 INFO kablam!    |
Nov 02 18:17:42.605 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 02 18:17:42.605 INFO kablam! 
Nov 02 18:17:42.606 INFO kablam! warning: function is never used: `test_mut_ref`
Nov 02 18:17:42.606 INFO kablam!   --> src/main.rs:34:1
Nov 02 18:17:42.606 INFO kablam!    |
Nov 02 18:17:42.606 INFO kablam! 34 | fn test_mut_ref() {
Nov 02 18:17:42.607 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Nov 02 18:17:42.607 INFO kablam!    |
Nov 02 18:17:42.607 INFO kablam!    = note: #[warn(dead_code)] on by default
Nov 02 18:17:42.607 INFO kablam! 
Nov 02 18:17:42.607 INFO kablam! warning: function is never used: `copy_vec`
Nov 02 18:17:42.608 INFO kablam!   --> src/main.rs:40:1
Nov 02 18:17:42.608 INFO kablam!    |
Nov 02 18:17:42.608 INFO kablam! 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Nov 02 18:17:42.608 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 02 18:17:42.608 INFO kablam! 
Nov 02 18:17:42.608 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
Nov 02 18:17:42.608 INFO kablam! su: No module specific data is present
Nov 02 18:17:43.228 INFO running `"docker" "rm" "-f" "b267854c4ca45ae87e62a649124153fdd3a2e7960b985fe3fee03b07146a0926"`
Nov 02 18:17:43.564 INFO blam! b267854c4ca45ae87e62a649124153fdd3a2e7960b985fe3fee03b07146a0926