Dec 02 00:49:08.513 INFO testing amitdash291/rust_lifetimes against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 00:49:08.513 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 00:49:08.997 INFO [stdout] af923a467cdc7c974098fdcbb8f466d19a67fea40bf3ac2ee64f531cc712eb3a
Dec 02 00:49:09.002 INFO running `"docker" "start" "-a" "af923a467cdc7c974098fdcbb8f466d19a67fea40bf3ac2ee64f531cc712eb3a"`
Dec 02 00:49:09.745 INFO [stderr] usermod: no changes
Dec 02 00:49:09.824 INFO [stderr]    Compiling lifetime_demo v0.1.0 (/source)
Dec 02 00:49:10.227 INFO [stderr] warning: variable `result_ref` is assigned to, but never used
Dec 02 00:49:10.227 INFO [stderr]  --> src/main.rs:4:9
Dec 02 00:49:10.227 INFO [stderr]   |
Dec 02 00:49:10.227 INFO [stderr] 4 |     let result_ref;
Dec 02 00:49:10.227 INFO [stderr]   |         ^^^^^^^^^^
Dec 02 00:49:10.227 INFO [stderr]   |
Dec 02 00:49:10.227 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 02 00:49:10.227 INFO [stderr]   = note: consider using `_result_ref` instead
Dec 02 00:49:10.227 INFO [stderr] 
Dec 02 00:49:10.227 INFO [stderr] warning: value assigned to `result_ref` is never read
Dec 02 00:49:10.227 INFO [stderr]  --> src/main.rs:6:5
Dec 02 00:49:10.227 INFO [stderr]   |
Dec 02 00:49:10.227 INFO [stderr] 6 |     result_ref = which_is_greater(&a, &b)
Dec 02 00:49:10.227 INFO [stderr]   |     ^^^^^^^^^^
Dec 02 00:49:10.227 INFO [stderr]   |
Dec 02 00:49:10.227 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 02 00:49:10.227 INFO [stderr] 
Dec 02 00:49:10.227 INFO [stderr] warning: unused variable: `a`
Dec 02 00:49:10.227 INFO [stderr]   --> src/main.rs:25:29
Dec 02 00:49:10.227 INFO [stderr]    |
Dec 02 00:49:10.227 INFO [stderr] 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Dec 02 00:49:10.227 INFO [stderr]    |                             ^ help: consider using `_a` instead
Dec 02 00:49:10.227 INFO [stderr] 
Dec 02 00:49:10.227 INFO [stderr] warning: unused variable: `b`
Dec 02 00:49:10.227 INFO [stderr]   --> src/main.rs:25:41
Dec 02 00:49:10.227 INFO [stderr]    |
Dec 02 00:49:10.227 INFO [stderr] 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Dec 02 00:49:10.227 INFO [stderr]    |                                         ^ help: consider using `_b` instead
Dec 02 00:49:10.227 INFO [stderr] 
Dec 02 00:49:10.227 INFO [stderr] warning: unused variable: `vec1`
Dec 02 00:49:10.227 INFO [stderr]   --> src/main.rs:37:13
Dec 02 00:49:10.227 INFO [stderr]    |
Dec 02 00:49:10.227 INFO [stderr] 37 |     let mut vec1: Vec<i32> = Vec::new();
Dec 02 00:49:10.227 INFO [stderr]    |             ^^^^ help: consider using `_vec1` instead
Dec 02 00:49:10.227 INFO [stderr] 
Dec 02 00:49:10.227 INFO [stderr] warning: variable does not need to be mutable
Dec 02 00:49:10.227 INFO [stderr]   --> src/main.rs:37:9
Dec 02 00:49:10.228 INFO [stderr]    |
Dec 02 00:49:10.228 INFO [stderr] 37 |     let mut vec1: Vec<i32> = Vec::new();
Dec 02 00:49:10.228 INFO [stderr]    |         ----^^^^
Dec 02 00:49:10.228 INFO [stderr]    |         |
Dec 02 00:49:10.228 INFO [stderr]    |         help: remove this `mut`
Dec 02 00:49:10.228 INFO [stderr]    |
Dec 02 00:49:10.228 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 02 00:49:10.228 INFO [stderr] 
Dec 02 00:49:10.228 INFO [stderr] warning: function is never used: `test_mut_ref`
Dec 02 00:49:10.228 INFO [stderr]   --> src/main.rs:34:1
Dec 02 00:49:10.228 INFO [stderr]    |
Dec 02 00:49:10.228 INFO [stderr] 34 | fn test_mut_ref() {
Dec 02 00:49:10.228 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Dec 02 00:49:10.228 INFO [stderr]    |
Dec 02 00:49:10.228 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 02 00:49:10.228 INFO [stderr] 
Dec 02 00:49:10.228 INFO [stderr] warning: function is never used: `copy_vec`
Dec 02 00:49:10.228 INFO [stderr]   --> src/main.rs:40:1
Dec 02 00:49:10.228 INFO [stderr]    |
Dec 02 00:49:10.228 INFO [stderr] 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Dec 02 00:49:10.228 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:49:10.228 INFO [stderr] 
Dec 02 00:49:10.637 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
Dec 02 00:49:10.640 INFO [stderr] su: No module specific data is present
Dec 02 00:49:12.575 INFO running `"docker" "inspect" "af923a467cdc7c974098fdcbb8f466d19a67fea40bf3ac2ee64f531cc712eb3a"`
Dec 02 00:49:12.639 INFO running `"docker" "rm" "-f" "af923a467cdc7c974098fdcbb8f466d19a67fea40bf3ac2ee64f531cc712eb3a"`
Dec 02 00:49:12.781 INFO [stdout] af923a467cdc7c974098fdcbb8f466d19a67fea40bf3ac2ee64f531cc712eb3a
Dec 02 00:49:12.782 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 00:49:13.235 INFO [stdout] 7eaa624f22b79c1a844ab1b5fb2ef3838e70bbfbada7ff2992b9c3131d57eb96
Dec 02 00:49:13.236 INFO running `"docker" "start" "-a" "7eaa624f22b79c1a844ab1b5fb2ef3838e70bbfbada7ff2992b9c3131d57eb96"`
Dec 02 00:49:13.642 INFO [stderr] usermod: no changes
Dec 02 00:49:13.677 INFO [stderr]    Compiling lifetime_demo v0.1.0 (/source)
Dec 02 00:49:13.978 INFO [stderr] warning: variable `result_ref` is assigned to, but never used
Dec 02 00:49:13.978 INFO [stderr]  --> src/main.rs:4:9
Dec 02 00:49:13.978 INFO [stderr]   |
Dec 02 00:49:13.978 INFO [stderr] 4 |     let result_ref;
Dec 02 00:49:13.978 INFO [stderr]   |         ^^^^^^^^^^
Dec 02 00:49:13.978 INFO [stderr]   |
Dec 02 00:49:13.978 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 02 00:49:13.978 INFO [stderr]   = note: consider using `_result_ref` instead
Dec 02 00:49:13.978 INFO [stderr] 
Dec 02 00:49:13.978 INFO [stderr] warning: value assigned to `result_ref` is never read
Dec 02 00:49:13.978 INFO [stderr]  --> src/main.rs:6:5
Dec 02 00:49:13.978 INFO [stderr]   |
Dec 02 00:49:13.978 INFO [stderr] 6 |     result_ref = which_is_greater(&a, &b)
Dec 02 00:49:13.978 INFO [stderr]   |     ^^^^^^^^^^
Dec 02 00:49:13.978 INFO [stderr]   |
Dec 02 00:49:13.978 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 02 00:49:13.978 INFO [stderr] 
Dec 02 00:49:13.978 INFO [stderr] warning: unused variable: `a`
Dec 02 00:49:13.978 INFO [stderr]   --> src/main.rs:25:29
Dec 02 00:49:13.979 INFO [stderr]    |
Dec 02 00:49:13.979 INFO [stderr] 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Dec 02 00:49:13.979 INFO [stderr]    |                             ^ help: consider using `_a` instead
Dec 02 00:49:13.979 INFO [stderr] 
Dec 02 00:49:13.979 INFO [stderr] warning: unused variable: `b`
Dec 02 00:49:13.979 INFO [stderr]   --> src/main.rs:25:41
Dec 02 00:49:13.979 INFO [stderr]    |
Dec 02 00:49:13.979 INFO [stderr] 25 | fn which_is_greater<'a, 'b>(a: &'a i32, b: &'b i32) -> &'b i32 {
Dec 02 00:49:13.979 INFO [stderr]    |                                         ^ help: consider using `_b` instead
Dec 02 00:49:13.979 INFO [stderr] 
Dec 02 00:49:13.979 INFO [stderr] warning: unused variable: `vec1`
Dec 02 00:49:13.979 INFO [stderr]   --> src/main.rs:37:13
Dec 02 00:49:13.979 INFO [stderr]    |
Dec 02 00:49:13.979 INFO [stderr] 37 |     let mut vec1: Vec<i32> = Vec::new();
Dec 02 00:49:13.979 INFO [stderr]    |             ^^^^ help: consider using `_vec1` instead
Dec 02 00:49:13.979 INFO [stderr] 
Dec 02 00:49:13.979 INFO [stderr] warning: variable does not need to be mutable
Dec 02 00:49:13.979 INFO [stderr]   --> src/main.rs:37:9
Dec 02 00:49:13.979 INFO [stderr]    |
Dec 02 00:49:13.979 INFO [stderr] 37 |     let mut vec1: Vec<i32> = Vec::new();
Dec 02 00:49:13.979 INFO [stderr]    |         ----^^^^
Dec 02 00:49:13.979 INFO [stderr]    |         |
Dec 02 00:49:13.979 INFO [stderr]    |         help: remove this `mut`
Dec 02 00:49:13.979 INFO [stderr]    |
Dec 02 00:49:13.979 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 02 00:49:13.979 INFO [stderr] 
Dec 02 00:49:13.981 INFO [stderr] warning: function is never used: `test_mut_ref`
Dec 02 00:49:13.981 INFO [stderr]   --> src/main.rs:34:1
Dec 02 00:49:13.981 INFO [stderr]    |
Dec 02 00:49:13.981 INFO [stderr] 34 | fn test_mut_ref() {
Dec 02 00:49:13.981 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Dec 02 00:49:13.981 INFO [stderr]    |
Dec 02 00:49:13.981 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 02 00:49:13.981 INFO [stderr] 
Dec 02 00:49:13.981 INFO [stderr] warning: function is never used: `copy_vec`
Dec 02 00:49:13.981 INFO [stderr]   --> src/main.rs:40:1
Dec 02 00:49:13.981 INFO [stderr]    |
Dec 02 00:49:13.981 INFO [stderr] 40 | fn copy_vec(from: &Vec<i32>, to: &mut Vec<i32>) {
Dec 02 00:49:13.981 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:49:13.981 INFO [stderr] 
Dec 02 00:49:14.247 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
Dec 02 00:49:14.259 INFO [stderr] su: No module specific data is present
Dec 02 00:49:16.032 INFO running `"docker" "inspect" "7eaa624f22b79c1a844ab1b5fb2ef3838e70bbfbada7ff2992b9c3131d57eb96"`
Dec 02 00:49:16.152 INFO running `"docker" "rm" "-f" "7eaa624f22b79c1a844ab1b5fb2ef3838e70bbfbada7ff2992b9c3131d57eb96"`
Dec 02 00:49:16.261 INFO [stdout] 7eaa624f22b79c1a844ab1b5fb2ef3838e70bbfbada7ff2992b9c3131d57eb96
Dec 02 00:49:16.264 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 00:49:17.417 INFO [stdout] 9fe61dc604b0c1449dc2960caf97a04d6b04117ec1298e874789eba30cec5325
Dec 02 00:49:17.422 INFO running `"docker" "start" "-a" "9fe61dc604b0c1449dc2960caf97a04d6b04117ec1298e874789eba30cec5325"`
Dec 02 00:49:17.836 INFO [stderr] usermod: no changes
Dec 02 00:49:17.871 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 02 00:49:17.872 INFO [stderr]      Running /target/debug/deps/lifetime_demo-e70b8f1a7466cb12
Dec 02 00:49:17.895 INFO [stdout] 
Dec 02 00:49:17.895 INFO [stdout] running 0 tests
Dec 02 00:49:17.895 INFO [stdout] 
Dec 02 00:49:17.895 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 02 00:49:17.895 INFO [stdout] 
Dec 02 00:49:17.897 INFO [stderr] su: No module specific data is present
Dec 02 00:49:22.529 INFO running `"docker" "inspect" "9fe61dc604b0c1449dc2960caf97a04d6b04117ec1298e874789eba30cec5325"`
Dec 02 00:49:22.725 INFO running `"docker" "rm" "-f" "9fe61dc604b0c1449dc2960caf97a04d6b04117ec1298e874789eba30cec5325"`
Dec 02 00:49:23.236 INFO [stdout] 9fe61dc604b0c1449dc2960caf97a04d6b04117ec1298e874789eba30cec5325
