Oct 21 19:47:49.032 INFO checking amitdash291/rust_lifetimes against master#155510e377ae2a8d8ee0dad1a5f809c9062a5526 for pr-55192
Oct 21 19:47:49.032 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192/worker-1/master#155510e377ae2a8d8ee0dad1a5f809c9062a5526:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-1/pr-55192/master#155510e377ae2a8d8ee0dad1a5f809c9062a5526:/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 +155510e377ae2a8d8ee0dad1a5f809c9062a5526-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 21 19:47:49.430 INFO blam! de472095e884754d4b4bcb4d6f351d1b7f39838f685ea20538b5461527d4a34d
Oct 21 19:47:49.432 INFO running `"docker" "start" "-a" "de472095e884754d4b4bcb4d6f351d1b7f39838f685ea20538b5461527d4a34d"`
Oct 21 19:47:50.441 INFO kablam! usermod: no changes
Oct 21 19:47:50.516 INFO kablam!     Checking lifetime_demo v0.1.0 (/source)
Oct 21 19:47:50.980 INFO kablam! warning: variable `result_ref` is assigned to, but never used
Oct 21 19:47:50.980 INFO kablam!  --> src/main.rs:4:9
Oct 21 19:47:50.980 INFO kablam!   |
Oct 21 19:47:50.980 INFO kablam! 4 |     let result_ref;
Oct 21 19:47:50.980 INFO kablam!   |         ^^^^^^^^^^
Oct 21 19:47:50.980 INFO kablam!   |
Oct 21 19:47:50.980 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 21 19:47:50.980 INFO kablam!   = note: consider using `_result_ref` instead
Oct 21 19:47:50.980 INFO kablam! 
Oct 21 19:47:50.980 INFO kablam! warning: value assigned to `result_ref` is never read
Oct 21 19:47:50.980 INFO kablam!  --> src/main.rs:6:5
Oct 21 19:47:50.980 INFO kablam!   |
Oct 21 19:47:50.980 INFO kablam! 6 |     result_ref = which_is_greater(&a, &b)
Oct 21 19:47:50.980 INFO kablam!   |     ^^^^^^^^^^
Oct 21 19:47:50.980 INFO kablam!   |
Oct 21 19:47:50.980 INFO kablam!   = note: #[warn(unused_assignments)] on by default
Oct 21 19:47:50.980 INFO kablam! 
Oct 21 19:47:50.980 INFO kablam! warning: unused variable: `a`
Oct 21 19:47:50.980 INFO kablam!   --> src/main.rs:25:29
Oct 21 19:47:50.980 INFO kablam!    |
Oct 21 19:47:50.980 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Oct 21 19:47:50.980 INFO kablam!    |                             ^ help: consider using `_a` instead
Oct 21 19:47:50.980 INFO kablam! 
Oct 21 19:47:50.980 INFO kablam! warning: unused variable: `b`
Oct 21 19:47:50.980 INFO kablam!   --> src/main.rs:25:41
Oct 21 19:47:50.980 INFO kablam!    |
Oct 21 19:47:50.980 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Oct 21 19:47:50.980 INFO kablam!    |                                         ^ help: consider using `_b` instead
Oct 21 19:47:50.980 INFO kablam! 
Oct 21 19:47:50.980 INFO kablam! warning: unused variable: `vec1`
Oct 21 19:47:50.980 INFO kablam!   --> src/main.rs:37:13
Oct 21 19:47:50.980 INFO kablam!    |
Oct 21 19:47:50.980 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Oct 21 19:47:50.980 INFO kablam!    |             ^^^^ help: consider using `_vec1` instead
Oct 21 19:47:50.980 INFO kablam! 
Oct 21 19:47:50.980 INFO kablam! warning: variable does not need to be mutable
Oct 21 19:47:50.980 INFO kablam!   --> src/main.rs:37:9
Oct 21 19:47:50.980 INFO kablam!    |
Oct 21 19:47:50.980 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Oct 21 19:47:50.980 INFO kablam!    |         ----^^^^
Oct 21 19:47:50.980 INFO kablam!    |         |
Oct 21 19:47:50.980 INFO kablam!    |         help: remove this `mut`
Oct 21 19:47:50.980 INFO kablam!    |
Oct 21 19:47:50.980 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 21 19:47:50.980 INFO kablam! 
Oct 21 19:47:50.988 INFO kablam! warning: function is never used: `test_mut_ref`
Oct 21 19:47:50.988 INFO kablam!   --> src/main.rs:34:1
Oct 21 19:47:50.988 INFO kablam!    |
Oct 21 19:47:50.988 INFO kablam! 34 | fn test_mut_ref() {
Oct 21 19:47:50.988 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Oct 21 19:47:50.988 INFO kablam!    |
Oct 21 19:47:50.988 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 21 19:47:50.988 INFO kablam! 
Oct 21 19:47:50.988 INFO kablam! warning: function is never used: `copy_vec`
Oct 21 19:47:50.988 INFO kablam!   --> src/main.rs:40:1
Oct 21 19:47:50.988 INFO kablam!    |
Oct 21 19:47:50.988 INFO kablam! 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Oct 21 19:47:50.988 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 21 19:47:50.988 INFO kablam! 
Oct 21 19:47:51.180 INFO kablam! warning: variable `result_ref` is assigned to, but never used
Oct 21 19:47:51.180 INFO kablam!  --> src/main.rs:4:9
Oct 21 19:47:51.180 INFO kablam!   |
Oct 21 19:47:51.180 INFO kablam! 4 |     let result_ref;
Oct 21 19:47:51.180 INFO kablam!   |         ^^^^^^^^^^
Oct 21 19:47:51.180 INFO kablam!   |
Oct 21 19:47:51.180 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 21 19:47:51.180 INFO kablam!   = note: consider using `_result_ref` instead
Oct 21 19:47:51.180 INFO kablam! 
Oct 21 19:47:51.180 INFO kablam! warning: value assigned to `result_ref` is never read
Oct 21 19:47:51.180 INFO kablam!  --> src/main.rs:6:5
Oct 21 19:47:51.180 INFO kablam!   |
Oct 21 19:47:51.180 INFO kablam! 6 |     result_ref = which_is_greater(&a, &b)
Oct 21 19:47:51.180 INFO kablam!   |     ^^^^^^^^^^
Oct 21 19:47:51.180 INFO kablam!   |
Oct 21 19:47:51.180 INFO kablam!   = note: #[warn(unused_assignments)] on by default
Oct 21 19:47:51.180 INFO kablam! 
Oct 21 19:47:51.180 INFO kablam! warning: unused variable: `a`
Oct 21 19:47:51.180 INFO kablam!   --> src/main.rs:25:29
Oct 21 19:47:51.180 INFO kablam!    |
Oct 21 19:47:51.180 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Oct 21 19:47:51.180 INFO kablam!    |                             ^ help: consider using `_a` instead
Oct 21 19:47:51.181 INFO kablam! 
Oct 21 19:47:51.181 INFO kablam! warning: unused variable: `b`
Oct 21 19:47:51.181 INFO kablam!   --> src/main.rs:25:41
Oct 21 19:47:51.181 INFO kablam!    |
Oct 21 19:47:51.181 INFO kablam! 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Oct 21 19:47:51.181 INFO kablam!    |                                         ^ help: consider using `_b` instead
Oct 21 19:47:51.181 INFO kablam! 
Oct 21 19:47:51.181 INFO kablam! warning: unused variable: `vec1`
Oct 21 19:47:51.181 INFO kablam!   --> src/main.rs:37:13
Oct 21 19:47:51.181 INFO kablam!    |
Oct 21 19:47:51.181 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Oct 21 19:47:51.181 INFO kablam!    |             ^^^^ help: consider using `_vec1` instead
Oct 21 19:47:51.181 INFO kablam! 
Oct 21 19:47:51.181 INFO kablam! warning: variable does not need to be mutable
Oct 21 19:47:51.181 INFO kablam!   --> src/main.rs:37:9
Oct 21 19:47:51.181 INFO kablam!    |
Oct 21 19:47:51.181 INFO kablam! 37 |     let mut vec1: Vec<i32> = Vec::new();
Oct 21 19:47:51.181 INFO kablam!    |         ----^^^^
Oct 21 19:47:51.181 INFO kablam!    |         |
Oct 21 19:47:51.181 INFO kablam!    |         help: remove this `mut`
Oct 21 19:47:51.181 INFO kablam!    |
Oct 21 19:47:51.181 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 21 19:47:51.181 INFO kablam! 
Oct 21 19:47:51.181 INFO kablam! warning: function is never used: `test_mut_ref`
Oct 21 19:47:51.181 INFO kablam!   --> src/main.rs:34:1
Oct 21 19:47:51.181 INFO kablam!    |
Oct 21 19:47:51.181 INFO kablam! 34 | fn test_mut_ref() {
Oct 21 19:47:51.181 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Oct 21 19:47:51.181 INFO kablam!    |
Oct 21 19:47:51.181 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 21 19:47:51.181 INFO kablam! 
Oct 21 19:47:51.181 INFO kablam! warning: function is never used: `copy_vec`
Oct 21 19:47:51.181 INFO kablam!   --> src/main.rs:40:1
Oct 21 19:47:51.181 INFO kablam!    |
Oct 21 19:47:51.181 INFO kablam! 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Oct 21 19:47:51.181 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 21 19:47:51.181 INFO kablam! 
Oct 21 19:47:51.202 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
Oct 21 19:47:51.209 INFO kablam! su: No module specific data is present
Oct 21 19:47:51.732 INFO running `"docker" "rm" "-f" "de472095e884754d4b4bcb4d6f351d1b7f39838f685ea20538b5461527d4a34d"`
Oct 21 19:47:51.887 INFO blam! de472095e884754d4b4bcb4d6f351d1b7f39838f685ea20538b5461527d4a34d