Nov 28 09:34:32.910 INFO checking amitdash291/rust_lifetimes against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 09:34:32.911 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-3/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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 28 09:34:33.384 INFO [stdout] fb7187486e9e6fe552bc00f8156a61f2cba5a0c644defefb216cc325778a91f1
Nov 28 09:34:33.386 INFO running `"docker" "start" "-a" "fb7187486e9e6fe552bc00f8156a61f2cba5a0c644defefb216cc325778a91f1"`
Nov 28 09:34:34.951 INFO [stderr] usermod: no changes
Nov 28 09:34:35.028 INFO [stderr]     Checking lifetime_demo v0.1.0 (/source)
Nov 28 09:34:35.588 INFO [stderr] warning: variable `result_ref` is assigned to, but never used
Nov 28 09:34:35.588 INFO [stderr]  --> src/main.rs:4:9
Nov 28 09:34:35.588 INFO [stderr]   |
Nov 28 09:34:35.588 INFO [stderr] 4 |     let result_ref;
Nov 28 09:34:35.588 INFO [stderr]   |         ^^^^^^^^^^
Nov 28 09:34:35.588 INFO [stderr]   |
Nov 28 09:34:35.588 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 28 09:34:35.588 INFO [stderr]   = note: consider using `_result_ref` instead
Nov 28 09:34:35.588 INFO [stderr] 
Nov 28 09:34:35.588 INFO [stderr] warning: value assigned to `result_ref` is never read
Nov 28 09:34:35.588 INFO [stderr]  --> src/main.rs:6:5
Nov 28 09:34:35.588 INFO [stderr]   |
Nov 28 09:34:35.588 INFO [stderr] 6 |     result_ref = which_is_greater(&a, &b)
Nov 28 09:34:35.588 INFO [stderr]   |     ^^^^^^^^^^
Nov 28 09:34:35.588 INFO [stderr]   |
Nov 28 09:34:35.588 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Nov 28 09:34:35.588 INFO [stderr] 
Nov 28 09:34:35.588 INFO [stderr] warning: unused variable: `a`
Nov 28 09:34:35.588 INFO [stderr]   --> src/main.rs:25:29
Nov 28 09:34:35.588 INFO [stderr]    |
Nov 28 09:34:35.588 INFO [stderr] 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 28 09:34:35.588 INFO [stderr]    |                             ^ help: consider using `_a` instead
Nov 28 09:34:35.589 INFO [stderr] 
Nov 28 09:34:35.589 INFO [stderr] warning: unused variable: `b`
Nov 28 09:34:35.589 INFO [stderr]   --> src/main.rs:25:41
Nov 28 09:34:35.589 INFO [stderr]    |
Nov 28 09:34:35.589 INFO [stderr] 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 28 09:34:35.589 INFO [stderr]    |                                         ^ help: consider using `_b` instead
Nov 28 09:34:35.589 INFO [stderr] 
Nov 28 09:34:35.595 INFO [stderr] warning: unused variable: `vec1`
Nov 28 09:34:35.595 INFO [stderr]   --> src/main.rs:37:13
Nov 28 09:34:35.595 INFO [stderr]    |
Nov 28 09:34:35.595 INFO [stderr] 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 28 09:34:35.595 INFO [stderr]    |             ^^^^ help: consider using `_vec1` instead
Nov 28 09:34:35.595 INFO [stderr] 
Nov 28 09:34:35.595 INFO [stderr] warning: variable does not need to be mutable
Nov 28 09:34:35.595 INFO [stderr]   --> src/main.rs:37:9
Nov 28 09:34:35.595 INFO [stderr]    |
Nov 28 09:34:35.595 INFO [stderr] 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 28 09:34:35.595 INFO [stderr]    |         ----^^^^
Nov 28 09:34:35.595 INFO [stderr]    |         |
Nov 28 09:34:35.595 INFO [stderr]    |         help: remove this `mut`
Nov 28 09:34:35.595 INFO [stderr]    |
Nov 28 09:34:35.595 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 09:34:35.595 INFO [stderr] 
Nov 28 09:34:35.601 INFO [stderr] warning: function is never used: `test_mut_ref`
Nov 28 09:34:35.601 INFO [stderr]   --> src/main.rs:34:1
Nov 28 09:34:35.601 INFO [stderr]    |
Nov 28 09:34:35.601 INFO [stderr] 34 | fn test_mut_ref() {
Nov 28 09:34:35.601 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Nov 28 09:34:35.601 INFO [stderr]    |
Nov 28 09:34:35.601 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 09:34:35.601 INFO [stderr] 
Nov 28 09:34:35.601 INFO [stderr] warning: function is never used: `copy_vec`
Nov 28 09:34:35.601 INFO [stderr]   --> src/main.rs:40:1
Nov 28 09:34:35.601 INFO [stderr]    |
Nov 28 09:34:35.601 INFO [stderr] 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Nov 28 09:34:35.601 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 09:34:35.601 INFO [stderr] 
Nov 28 09:34:35.670 INFO [stderr] warning: variable `result_ref` is assigned to, but never used
Nov 28 09:34:35.670 INFO [stderr]  --> src/main.rs:4:9
Nov 28 09:34:35.670 INFO [stderr]   |
Nov 28 09:34:35.670 INFO [stderr] 4 |     let result_ref;
Nov 28 09:34:35.670 INFO [stderr]   |         ^^^^^^^^^^
Nov 28 09:34:35.670 INFO [stderr]   |
Nov 28 09:34:35.670 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 28 09:34:35.670 INFO [stderr]   = note: consider using `_result_ref` instead
Nov 28 09:34:35.670 INFO [stderr] 
Nov 28 09:34:35.670 INFO [stderr] warning: value assigned to `result_ref` is never read
Nov 28 09:34:35.670 INFO [stderr]  --> src/main.rs:6:5
Nov 28 09:34:35.670 INFO [stderr]   |
Nov 28 09:34:35.670 INFO [stderr] 6 |     result_ref = which_is_greater(&a, &b)
Nov 28 09:34:35.670 INFO [stderr]   |     ^^^^^^^^^^
Nov 28 09:34:35.670 INFO [stderr]   |
Nov 28 09:34:35.670 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Nov 28 09:34:35.670 INFO [stderr] 
Nov 28 09:34:35.670 INFO [stderr] warning: unused variable: `a`
Nov 28 09:34:35.670 INFO [stderr]   --> src/main.rs:25:29
Nov 28 09:34:35.670 INFO [stderr]    |
Nov 28 09:34:35.670 INFO [stderr] 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 28 09:34:35.670 INFO [stderr]    |                             ^ help: consider using `_a` instead
Nov 28 09:34:35.670 INFO [stderr] 
Nov 28 09:34:35.674 INFO [stderr] warning: unused variable: `b`
Nov 28 09:34:35.674 INFO [stderr]   --> src/main.rs:25:41
Nov 28 09:34:35.674 INFO [stderr]    |
Nov 28 09:34:35.675 INFO [stderr] 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 28 09:34:35.675 INFO [stderr]    |                                         ^ help: consider using `_b` instead
Nov 28 09:34:35.675 INFO [stderr] 
Nov 28 09:34:35.675 INFO [stderr] warning: unused variable: `vec1`
Nov 28 09:34:35.675 INFO [stderr]   --> src/main.rs:37:13
Nov 28 09:34:35.676 INFO [stderr]    |
Nov 28 09:34:35.676 INFO [stderr] 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 28 09:34:35.676 INFO [stderr]    |             ^^^^ help: consider using `_vec1` instead
Nov 28 09:34:35.676 INFO [stderr] 
Nov 28 09:34:35.680 INFO [stderr] warning: variable does not need to be mutable
Nov 28 09:34:35.681 INFO [stderr]   --> src/main.rs:37:9
Nov 28 09:34:35.681 INFO [stderr]    |
Nov 28 09:34:35.681 INFO [stderr] 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 28 09:34:35.681 INFO [stderr]    |         ----^^^^
Nov 28 09:34:35.681 INFO [stderr]    |         |
Nov 28 09:34:35.681 INFO [stderr]    |         help: remove this `mut`
Nov 28 09:34:35.682 INFO [stderr]    |
Nov 28 09:34:35.682 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 09:34:35.682 INFO [stderr] 
Nov 28 09:34:35.682 INFO [stderr] warning: function is never used: `test_mut_ref`
Nov 28 09:34:35.682 INFO [stderr]   --> src/main.rs:34:1
Nov 28 09:34:35.682 INFO [stderr]    |
Nov 28 09:34:35.682 INFO [stderr] 34 | fn test_mut_ref() {
Nov 28 09:34:35.683 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Nov 28 09:34:35.683 INFO [stderr]    |
Nov 28 09:34:35.683 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 09:34:35.683 INFO [stderr] 
Nov 28 09:34:35.683 INFO [stderr] warning: function is never used: `copy_vec`
Nov 28 09:34:35.683 INFO [stderr]   --> src/main.rs:40:1
Nov 28 09:34:35.683 INFO [stderr]    |
Nov 28 09:34:35.684 INFO [stderr] 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Nov 28 09:34:35.684 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 09:34:35.684 INFO [stderr] 
Nov 28 09:34:35.715 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
Nov 28 09:34:35.722 INFO [stderr] su: No module specific data is present
Nov 28 09:34:36.946 INFO running `"docker" "inspect" "fb7187486e9e6fe552bc00f8156a61f2cba5a0c644defefb216cc325778a91f1"`
Nov 28 09:34:37.195 INFO running `"docker" "rm" "-f" "fb7187486e9e6fe552bc00f8156a61f2cba5a0c644defefb216cc325778a91f1"`
Nov 28 09:34:37.568 INFO [stdout] fb7187486e9e6fe552bc00f8156a61f2cba5a0c644defefb216cc325778a91f1