Nov 17 09:30:40.133 INFO testing amitdash291/rust_lifetimes against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 17 09:30:40.139 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-5/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt build --frozen" "-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 17 09:30:40.448 INFO [stdout] 0f5f5df6263a8fc19e8aba6da1472a8a9edb5b3c17f5a878861291f6af6f30a6
Nov 17 09:30:40.459 INFO running `"docker" "start" "-a" "0f5f5df6263a8fc19e8aba6da1472a8a9edb5b3c17f5a878861291f6af6f30a6"`
Nov 17 09:30:41.235 INFO [stderr] usermod: no changes
Nov 17 09:30:41.266 INFO [stderr]    Compiling lifetime_demo v0.1.0 (/source)
Nov 17 09:30:41.540 INFO [stderr] warning: variable `result_ref` is assigned to, but never used
Nov 17 09:30:41.540 INFO [stderr]  --> src/main.rs:4:9
Nov 17 09:30:41.540 INFO [stderr]   |
Nov 17 09:30:41.540 INFO [stderr] 4 |     let result_ref;
Nov 17 09:30:41.540 INFO [stderr]   |         ^^^^^^^^^^
Nov 17 09:30:41.540 INFO [stderr]   |
Nov 17 09:30:41.540 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 17 09:30:41.540 INFO [stderr]   = note: consider using `_result_ref` instead
Nov 17 09:30:41.540 INFO [stderr] 
Nov 17 09:30:41.540 INFO [stderr] warning: value assigned to `result_ref` is never read
Nov 17 09:30:41.540 INFO [stderr]  --> src/main.rs:6:5
Nov 17 09:30:41.540 INFO [stderr]   |
Nov 17 09:30:41.540 INFO [stderr] 6 |     result_ref = which_is_greater(&a, &b)
Nov 17 09:30:41.540 INFO [stderr]   |     ^^^^^^^^^^
Nov 17 09:30:41.540 INFO [stderr]   |
Nov 17 09:30:41.540 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Nov 17 09:30:41.540 INFO [stderr] 
Nov 17 09:30:41.540 INFO [stderr] warning: unused variable: `a`
Nov 17 09:30:41.540 INFO [stderr]   --> src/main.rs:25:29
Nov 17 09:30:41.540 INFO [stderr]    |
Nov 17 09:30:41.540 INFO [stderr] 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 17 09:30:41.540 INFO [stderr]    |                             ^ help: consider using `_a` instead
Nov 17 09:30:41.540 INFO [stderr] 
Nov 17 09:30:41.540 INFO [stderr] warning: unused variable: `b`
Nov 17 09:30:41.540 INFO [stderr]   --> src/main.rs:25:41
Nov 17 09:30:41.540 INFO [stderr]    |
Nov 17 09:30:41.540 INFO [stderr] 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 17 09:30:41.540 INFO [stderr]    |                                         ^ help: consider using `_b` instead
Nov 17 09:30:41.540 INFO [stderr] 
Nov 17 09:30:41.540 INFO [stderr] warning: unused variable: `vec1`
Nov 17 09:30:41.540 INFO [stderr]   --> src/main.rs:37:13
Nov 17 09:30:41.540 INFO [stderr]    |
Nov 17 09:30:41.541 INFO [stderr] 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 17 09:30:41.541 INFO [stderr]    |             ^^^^ help: consider using `_vec1` instead
Nov 17 09:30:41.541 INFO [stderr] 
Nov 17 09:30:41.545 INFO [stderr] warning: variable does not need to be mutable
Nov 17 09:30:41.545 INFO [stderr]   --> src/main.rs:37:9
Nov 17 09:30:41.545 INFO [stderr]    |
Nov 17 09:30:41.545 INFO [stderr] 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 17 09:30:41.545 INFO [stderr]    |         ----^^^^
Nov 17 09:30:41.545 INFO [stderr]    |         |
Nov 17 09:30:41.545 INFO [stderr]    |         help: remove this `mut`
Nov 17 09:30:41.545 INFO [stderr]    |
Nov 17 09:30:41.545 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 17 09:30:41.545 INFO [stderr] 
Nov 17 09:30:41.546 INFO [stderr] warning: function is never used: `test_mut_ref`
Nov 17 09:30:41.546 INFO [stderr]   --> src/main.rs:34:1
Nov 17 09:30:41.546 INFO [stderr]    |
Nov 17 09:30:41.546 INFO [stderr] 34 | fn test_mut_ref() {
Nov 17 09:30:41.546 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Nov 17 09:30:41.546 INFO [stderr]    |
Nov 17 09:30:41.546 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 17 09:30:41.546 INFO [stderr] 
Nov 17 09:30:41.546 INFO [stderr] warning: function is never used: `copy_vec`
Nov 17 09:30:41.546 INFO [stderr]   --> src/main.rs:40:1
Nov 17 09:30:41.546 INFO [stderr]    |
Nov 17 09:30:41.546 INFO [stderr] 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Nov 17 09:30:41.546 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:30:41.546 INFO [stderr] 
Nov 17 09:30:41.771 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
Nov 17 09:30:41.775 INFO [stderr] su: No module specific data is present
Nov 17 09:30:42.116 INFO running `"docker" "inspect" "0f5f5df6263a8fc19e8aba6da1472a8a9edb5b3c17f5a878861291f6af6f30a6"`
Nov 17 09:30:42.338 INFO running `"docker" "rm" "-f" "0f5f5df6263a8fc19e8aba6da1472a8a9edb5b3c17f5a878861291f6af6f30a6"`
Nov 17 09:30:42.608 INFO [stdout] 0f5f5df6263a8fc19e8aba6da1472a8a9edb5b3c17f5a878861291f6af6f30a6
Nov 17 09:30:42.615 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-5/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt test --frozen --no-run" "-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 17 09:30:42.881 INFO [stdout] c024ef21a3d69dfef4008475fcc989f41349fcbe5fde7c8aeb93edf80c8b5578
Nov 17 09:30:42.890 INFO running `"docker" "start" "-a" "c024ef21a3d69dfef4008475fcc989f41349fcbe5fde7c8aeb93edf80c8b5578"`
Nov 17 09:30:43.719 INFO [stderr] usermod: no changes
Nov 17 09:30:43.750 INFO [stderr]    Compiling lifetime_demo v0.1.0 (/source)
Nov 17 09:30:44.156 INFO [stderr] warning: variable `result_ref` is assigned to, but never used
Nov 17 09:30:44.156 INFO [stderr]  --> src/main.rs:4:9
Nov 17 09:30:44.156 INFO [stderr]   |
Nov 17 09:30:44.156 INFO [stderr] 4 |     let result_ref;
Nov 17 09:30:44.156 INFO [stderr]   |         ^^^^^^^^^^
Nov 17 09:30:44.156 INFO [stderr]   |
Nov 17 09:30:44.156 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 17 09:30:44.156 INFO [stderr]   = note: consider using `_result_ref` instead
Nov 17 09:30:44.156 INFO [stderr] 
Nov 17 09:30:44.156 INFO [stderr] warning: value assigned to `result_ref` is never read
Nov 17 09:30:44.156 INFO [stderr]  --> src/main.rs:6:5
Nov 17 09:30:44.156 INFO [stderr]   |
Nov 17 09:30:44.156 INFO [stderr] 6 |     result_ref = which_is_greater(&a, &b)
Nov 17 09:30:44.156 INFO [stderr]   |     ^^^^^^^^^^
Nov 17 09:30:44.156 INFO [stderr]   |
Nov 17 09:30:44.156 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Nov 17 09:30:44.156 INFO [stderr] 
Nov 17 09:30:44.156 INFO [stderr] warning: unused variable: `a`
Nov 17 09:30:44.156 INFO [stderr]   --> src/main.rs:25:29
Nov 17 09:30:44.156 INFO [stderr]    |
Nov 17 09:30:44.156 INFO [stderr] 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 17 09:30:44.156 INFO [stderr]    |                             ^ help: consider using `_a` instead
Nov 17 09:30:44.156 INFO [stderr] 
Nov 17 09:30:44.156 INFO [stderr] warning: unused variable: `b`
Nov 17 09:30:44.156 INFO [stderr]   --> src/main.rs:25:41
Nov 17 09:30:44.156 INFO [stderr]    |
Nov 17 09:30:44.156 INFO [stderr] 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Nov 17 09:30:44.156 INFO [stderr]    |                                         ^ help: consider using `_b` instead
Nov 17 09:30:44.156 INFO [stderr] 
Nov 17 09:30:44.156 INFO [stderr] warning: unused variable: `vec1`
Nov 17 09:30:44.156 INFO [stderr]   --> src/main.rs:37:13
Nov 17 09:30:44.156 INFO [stderr]    |
Nov 17 09:30:44.156 INFO [stderr] 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 17 09:30:44.156 INFO [stderr]    |             ^^^^ help: consider using `_vec1` instead
Nov 17 09:30:44.156 INFO [stderr] 
Nov 17 09:30:44.163 INFO [stderr] warning: variable does not need to be mutable
Nov 17 09:30:44.163 INFO [stderr]   --> src/main.rs:37:9
Nov 17 09:30:44.163 INFO [stderr]    |
Nov 17 09:30:44.163 INFO [stderr] 37 |     let mut vec1: Vec<i32> = Vec::new();
Nov 17 09:30:44.163 INFO [stderr]    |         ----^^^^
Nov 17 09:30:44.163 INFO [stderr]    |         |
Nov 17 09:30:44.163 INFO [stderr]    |         help: remove this `mut`
Nov 17 09:30:44.163 INFO [stderr]    |
Nov 17 09:30:44.163 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 17 09:30:44.163 INFO [stderr] 
Nov 17 09:30:44.163 INFO [stderr] warning: function is never used: `test_mut_ref`
Nov 17 09:30:44.163 INFO [stderr]   --> src/main.rs:34:1
Nov 17 09:30:44.163 INFO [stderr]    |
Nov 17 09:30:44.163 INFO [stderr] 34 | fn test_mut_ref() {
Nov 17 09:30:44.163 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Nov 17 09:30:44.163 INFO [stderr]    |
Nov 17 09:30:44.163 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 17 09:30:44.163 INFO [stderr] 
Nov 17 09:30:44.163 INFO [stderr] warning: function is never used: `copy_vec`
Nov 17 09:30:44.163 INFO [stderr]   --> src/main.rs:40:1
Nov 17 09:30:44.163 INFO [stderr]    |
Nov 17 09:30:44.164 INFO [stderr] 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Nov 17 09:30:44.164 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:30:44.164 INFO [stderr] 
Nov 17 09:30:44.516 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
Nov 17 09:30:44.519 INFO [stderr] su: No module specific data is present
Nov 17 09:30:45.671 INFO running `"docker" "inspect" "c024ef21a3d69dfef4008475fcc989f41349fcbe5fde7c8aeb93edf80c8b5578"`
Nov 17 09:30:45.963 INFO running `"docker" "rm" "-f" "c024ef21a3d69dfef4008475fcc989f41349fcbe5fde7c8aeb93edf80c8b5578"`
Nov 17 09:30:46.315 INFO [stdout] c024ef21a3d69dfef4008475fcc989f41349fcbe5fde7c8aeb93edf80c8b5578
Nov 17 09:30:46.318 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-5/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt test --frozen" "-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 17 09:30:46.727 INFO [stdout] 948fef9a2270d75d72ad3a0bec0e544b9b30b5ffd35ceb6b955c605887ebc028
Nov 17 09:30:46.735 INFO running `"docker" "start" "-a" "948fef9a2270d75d72ad3a0bec0e544b9b30b5ffd35ceb6b955c605887ebc028"`
Nov 17 09:30:47.715 INFO [stderr] usermod: no changes
Nov 17 09:30:47.744 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Nov 17 09:30:47.744 INFO [stderr]      Running /target/debug/deps/lifetime_demo-84299c4b2ed16b2a
Nov 17 09:30:47.748 INFO [stdout] 
Nov 17 09:30:47.748 INFO [stdout] running 0 tests
Nov 17 09:30:47.748 INFO [stdout] 
Nov 17 09:30:47.748 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 09:30:47.748 INFO [stdout] 
Nov 17 09:30:47.753 INFO [stderr] su: No module specific data is present
Nov 17 09:30:48.151 INFO running `"docker" "inspect" "948fef9a2270d75d72ad3a0bec0e544b9b30b5ffd35ceb6b955c605887ebc028"`
Nov 17 09:30:48.344 INFO running `"docker" "rm" "-f" "948fef9a2270d75d72ad3a0bec0e544b9b30b5ffd35ceb6b955c605887ebc028"`
Nov 17 09:30:48.663 INFO [stdout] 948fef9a2270d75d72ad3a0bec0e544b9b30b5ffd35ceb6b955c605887ebc028