Dec 18 08:03:31.948 INFO checking DaRavenox/Rust against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 08:03:31.948 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/DaRavenox/Rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 08:03:32.968 INFO [stdout] 767a8cc0ee4be0a956864e8c5bad235cdc1eb907c87e6e2d839a5bbfdf0c66dd
Dec 18 08:03:32.976 INFO running `"docker" "start" "-a" "767a8cc0ee4be0a956864e8c5bad235cdc1eb907c87e6e2d839a5bbfdf0c66dd"`
Dec 18 08:03:33.602 INFO [stderr]     Checking hello_rust v0.0.1 (/opt/crater/workdir)
Dec 18 08:03:33.896 INFO [stderr] warning: unused variable: `y`
Dec 18 08:03:33.896 INFO [stderr]  --> src/main.rs:3:12
Dec 18 08:03:33.896 INFO [stderr]   |
Dec 18 08:03:33.896 INFO [stderr] 3 |       let mut y: i32 = 12; // mutable, this value CAN be changed;
Dec 18 08:03:33.896 INFO [stderr]   |               ^ help: consider using `_y` instead
Dec 18 08:03:33.897 INFO [stderr]   |
Dec 18 08:03:33.897 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 18 08:03:33.897 INFO [stderr] 
Dec 18 08:03:33.897 INFO [stderr] warning: unused variable: `z`
Dec 18 08:03:33.897 INFO [stderr]  --> src/main.rs:4:8
Dec 18 08:03:33.897 INFO [stderr]   |
Dec 18 08:03:33.897 INFO [stderr] 4 |       let z:i32; //We initialize a variable;
Dec 18 08:03:33.897 INFO [stderr]   |           ^ help: consider using `_z` instead
Dec 18 08:03:33.897 INFO [stderr] 
Dec 18 08:03:33.897 INFO [stderr] warning: unused variable: `y`
Dec 18 08:03:33.897 INFO [stderr]   --> src/main.rs:66:27
Dec 18 08:03:33.897 INFO [stderr]    |
Dec 18 08:03:33.897 INFO [stderr] 66 | fn math_with_args(x: i32, y: i32, z: i32) -> i32 {
Dec 18 08:03:33.897 INFO [stderr]    |                           ^ help: consider using `_y` instead
Dec 18 08:03:33.897 INFO [stderr] 
Dec 18 08:03:33.897 INFO [stderr] warning: unused variable: `z`
Dec 18 08:03:33.897 INFO [stderr]   --> src/main.rs:66:35
Dec 18 08:03:33.897 INFO [stderr]    |
Dec 18 08:03:33.897 INFO [stderr] 66 | fn math_with_args(x: i32, y: i32, z: i32) -> i32 {
Dec 18 08:03:33.897 INFO [stderr]    |                                   ^ help: consider using `_z` instead
Dec 18 08:03:33.897 INFO [stderr] 
Dec 18 08:03:33.897 INFO [stderr] warning: unused variable: `x`
Dec 18 08:03:33.897 INFO [stderr]   --> src/main.rs:78:13
Dec 18 08:03:33.897 INFO [stderr]    |
Dec 18 08:03:33.897 INFO [stderr] 78 | fn diverges(x: i32) -> !{
Dec 18 08:03:33.897 INFO [stderr]    |             ^ help: consider using `_x` instead
Dec 18 08:03:33.897 INFO [stderr] 
Dec 18 08:03:33.908 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:03:33.908 INFO [stderr]  --> src/main.rs:3:8
Dec 18 08:03:33.908 INFO [stderr]   |
Dec 18 08:03:33.908 INFO [stderr] 3 |       let mut y: i32 = 12; // mutable, this value CAN be changed;
Dec 18 08:03:33.908 INFO [stderr]   |           ----^
Dec 18 08:03:33.908 INFO [stderr]   |           |
Dec 18 08:03:33.908 INFO [stderr]   |           help: remove this `mut`
Dec 18 08:03:33.908 INFO [stderr]   |
Dec 18 08:03:33.908 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 18 08:03:33.908 INFO [stderr] 
Dec 18 08:03:33.908 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:03:33.908 INFO [stderr]   --> src/main.rs:18:9
Dec 18 08:03:33.908 INFO [stderr]    |
Dec 18 08:03:33.908 INFO [stderr] 18 |           let mut x = 7;
Dec 18 08:03:33.908 INFO [stderr]    |               ----^
Dec 18 08:03:33.908 INFO [stderr]    |               |
Dec 18 08:03:33.908 INFO [stderr]    |               help: remove this `mut`
Dec 18 08:03:33.908 INFO [stderr] 
Dec 18 08:03:33.919 INFO [stderr] warning: unused variable: `y`
Dec 18 08:03:33.919 INFO [stderr]  --> src/main.rs:3:12
Dec 18 08:03:33.919 INFO [stderr]   |
Dec 18 08:03:33.919 INFO [stderr] 3 |       let mut y: i32 = 12; // mutable, this value CAN be changed;
Dec 18 08:03:33.919 INFO [stderr]   |               ^ help: consider using `_y` instead
Dec 18 08:03:33.919 INFO [stderr]   |
Dec 18 08:03:33.919 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 18 08:03:33.919 INFO [stderr] 
Dec 18 08:03:33.919 INFO [stderr] warning: unused variable: `z`
Dec 18 08:03:33.919 INFO [stderr]  --> src/main.rs:4:8
Dec 18 08:03:33.919 INFO [stderr]   |
Dec 18 08:03:33.919 INFO [stderr] 4 |       let z:i32; //We initialize a variable;
Dec 18 08:03:33.919 INFO [stderr]   |           ^ help: consider using `_z` instead
Dec 18 08:03:33.919 INFO [stderr] 
Dec 18 08:03:33.919 INFO [stderr] warning: unused variable: `y`
Dec 18 08:03:33.919 INFO [stderr]   --> src/main.rs:66:27
Dec 18 08:03:33.919 INFO [stderr]    |
Dec 18 08:03:33.919 INFO [stderr] 66 | fn math_with_args(x: i32, y: i32, z: i32) -> i32 {
Dec 18 08:03:33.919 INFO [stderr]    |                           ^ help: consider using `_y` instead
Dec 18 08:03:33.919 INFO [stderr] 
Dec 18 08:03:33.919 INFO [stderr] warning: unused variable: `z`
Dec 18 08:03:33.919 INFO [stderr]   --> src/main.rs:66:35
Dec 18 08:03:33.919 INFO [stderr]    |
Dec 18 08:03:33.919 INFO [stderr] 66 | fn math_with_args(x: i32, y: i32, z: i32) -> i32 {
Dec 18 08:03:33.919 INFO [stderr]    |                                   ^ help: consider using `_z` instead
Dec 18 08:03:33.919 INFO [stderr] 
Dec 18 08:03:33.919 INFO [stderr] warning: unused variable: `x`
Dec 18 08:03:33.919 INFO [stderr]   --> src/main.rs:78:13
Dec 18 08:03:33.919 INFO [stderr]    |
Dec 18 08:03:33.919 INFO [stderr] 78 | fn diverges(x: i32) -> !{
Dec 18 08:03:33.919 INFO [stderr]    |             ^ help: consider using `_x` instead
Dec 18 08:03:33.920 INFO [stderr] 
Dec 18 08:03:33.923 INFO [stderr] warning: function is never used: `diverges`
Dec 18 08:03:33.923 INFO [stderr]   --> src/main.rs:78:1
Dec 18 08:03:33.923 INFO [stderr]    |
Dec 18 08:03:33.923 INFO [stderr] 78 | fn diverges(x: i32) -> !{
Dec 18 08:03:33.923 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:03:33.923 INFO [stderr]    |
Dec 18 08:03:33.923 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 08:03:33.923 INFO [stderr] 
Dec 18 08:03:33.928 INFO [stderr] warning: function `testBorrow` should have a snake case name such as `test_borrow`
Dec 18 08:03:33.928 INFO [stderr]    --> src/main.rs:229:1
Dec 18 08:03:33.928 INFO [stderr]     |
Dec 18 08:03:33.928 INFO [stderr] 229 | / fn testBorrow(v1: &mut Vec<i32>, v2: &mut Vec<i32>){
Dec 18 08:03:33.928 INFO [stderr] 230 | |     v1[2] = 2;
Dec 18 08:03:33.928 INFO [stderr] 231 | |     v2[2] = 2;
Dec 18 08:03:33.928 INFO [stderr] 232 | | }
Dec 18 08:03:33.928 INFO [stderr]     | |_^
Dec 18 08:03:33.928 INFO [stderr]     |
Dec 18 08:03:33.928 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Dec 18 08:03:33.928 INFO [stderr] 
Dec 18 08:03:33.928 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:03:33.928 INFO [stderr]  --> src/main.rs:3:8
Dec 18 08:03:33.928 INFO [stderr]   |
Dec 18 08:03:33.928 INFO [stderr] 3 |       let mut y: i32 = 12; // mutable, this value CAN be changed;
Dec 18 08:03:33.928 INFO [stderr]   |           ----^
Dec 18 08:03:33.928 INFO [stderr]   |           |
Dec 18 08:03:33.928 INFO [stderr]   |           help: remove this `mut`
Dec 18 08:03:33.928 INFO [stderr]   |
Dec 18 08:03:33.928 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 18 08:03:33.928 INFO [stderr] 
Dec 18 08:03:33.928 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:03:33.928 INFO [stderr]   --> src/main.rs:18:9
Dec 18 08:03:33.928 INFO [stderr]    |
Dec 18 08:03:33.928 INFO [stderr] 18 |           let mut x = 7;
Dec 18 08:03:33.928 INFO [stderr]    |               ----^
Dec 18 08:03:33.928 INFO [stderr]    |               |
Dec 18 08:03:33.928 INFO [stderr]    |               help: remove this `mut`
Dec 18 08:03:33.928 INFO [stderr] 
Dec 18 08:03:33.943 INFO [stderr] warning: function is never used: `diverges`
Dec 18 08:03:33.943 INFO [stderr]   --> src/main.rs:78:1
Dec 18 08:03:33.943 INFO [stderr]    |
Dec 18 08:03:33.943 INFO [stderr] 78 | fn diverges(x: i32) -> !{
Dec 18 08:03:33.943 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:03:33.943 INFO [stderr]    |
Dec 18 08:03:33.943 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 08:03:33.943 INFO [stderr] 
Dec 18 08:03:33.943 INFO [stderr] warning: function `testBorrow` should have a snake case name such as `test_borrow`
Dec 18 08:03:33.943 INFO [stderr]    --> src/main.rs:229:1
Dec 18 08:03:33.943 INFO [stderr]     |
Dec 18 08:03:33.943 INFO [stderr] 229 | / fn testBorrow(v1: &mut Vec<i32>, v2: &mut Vec<i32>){
Dec 18 08:03:33.943 INFO [stderr] 230 | |     v1[2] = 2;
Dec 18 08:03:33.943 INFO [stderr] 231 | |     v2[2] = 2;
Dec 18 08:03:33.943 INFO [stderr] 232 | | }
Dec 18 08:03:33.943 INFO [stderr]     | |_^
Dec 18 08:03:33.943 INFO [stderr]     |
Dec 18 08:03:33.943 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Dec 18 08:03:33.943 INFO [stderr] 
Dec 18 08:03:33.955 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
Dec 18 08:03:34.334 INFO running `"docker" "inspect" "767a8cc0ee4be0a956864e8c5bad235cdc1eb907c87e6e2d839a5bbfdf0c66dd"`
Dec 18 08:03:34.525 INFO running `"docker" "rm" "-f" "767a8cc0ee4be0a956864e8c5bad235cdc1eb907c87e6e2d839a5bbfdf0c66dd"`
Dec 18 08:03:34.715 INFO [stdout] 767a8cc0ee4be0a956864e8c5bad235cdc1eb907c87e6e2d839a5bbfdf0c66dd