[INFO] updating cached repository DaRavenox/Rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/DaRavenox/Rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/DaRavenox/Rust" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/DaRavenox/Rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/DaRavenox/Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/DaRavenox/Rust" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/DaRavenox/Rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/DaRavenox/Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b4507fe6801b4b1075b3b7d82f4388b34eae37e3
[INFO] sha for GitHub repo DaRavenox/Rust: b4507fe6801b4b1075b3b7d82f4388b34eae37e3
[INFO] validating manifest of DaRavenox/Rust on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of DaRavenox/Rust on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing DaRavenox/Rust
[INFO] finished frobbing DaRavenox/Rust
[INFO] frobbed toml for DaRavenox/Rust written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/DaRavenox/Rust/Cargo.toml
[INFO] started frobbing DaRavenox/Rust
[INFO] finished frobbing DaRavenox/Rust
[INFO] frobbed toml for DaRavenox/Rust written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/DaRavenox/Rust/Cargo.toml
[INFO] crate DaRavenox/Rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking DaRavenox/Rust against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-0/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/DaRavenox/Rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a37f71925ed19e870fa88c28e99c86e0cbb64adb7e4cc1beebc4dc63a91d893a
[INFO] running `"docker" "start" "-a" "a37f71925ed19e870fa88c28e99c86e0cbb64adb7e4cc1beebc4dc63a91d893a"`
[INFO] [stderr]     Checking hello_rust v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]  --> src/main.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 |       let mut y: i32 = 12; // mutable, this value CAN be changed;
[INFO] [stderr]   |               ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]  --> src/main.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 |       let z:i32; //We initialize a variable;
[INFO] [stderr]   |           ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/main.rs:66:27
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn math_with_args(x: i32, y: i32, z: i32) -> i32 {
[INFO] [stderr]    |                           ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/main.rs:66:35
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn math_with_args(x: i32, y: i32, z: i32) -> i32 {
[INFO] [stderr]    |                                   ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn diverges(x: i32) -> !{
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 |       let mut y: i32 = 12; // mutable, this value CAN be changed;
[INFO] [stderr]   |           ----^
[INFO] [stderr]   |           |
[INFO] [stderr]   |           help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |           let mut x = 7;
[INFO] [stderr]    |               ----^
[INFO] [stderr]    |               |
[INFO] [stderr]    |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `diverges`
[INFO] [stderr]   --> src/main.rs:78:1
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn diverges(x: i32) -> !{
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `testBorrow` should have a snake case name
[INFO] [stderr]    --> src/main.rs:229:4
[INFO] [stderr]     |
[INFO] [stderr] 229 | fn testBorrow(v1: &mut Vec<i32>, v2: &mut Vec<i32>){
[INFO] [stderr]     |    ^^^^^^^^^^ help: convert the identifier to snake case: `test_borrow`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]  --> src/main.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 |       let mut y: i32 = 12; // mutable, this value CAN be changed;
[INFO] [stderr]   |               ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]  --> src/main.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 |       let z:i32; //We initialize a variable;
[INFO] [stderr]   |           ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/main.rs:66:27
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn math_with_args(x: i32, y: i32, z: i32) -> i32 {
[INFO] [stderr]    |                           ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/main.rs:66:35
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn math_with_args(x: i32, y: i32, z: i32) -> i32 {
[INFO] [stderr]    |                                   ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn diverges(x: i32) -> !{
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 |       let mut y: i32 = 12; // mutable, this value CAN be changed;
[INFO] [stderr]   |           ----^
[INFO] [stderr]   |           |
[INFO] [stderr]   |           help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |           let mut x = 7;
[INFO] [stderr]    |               ----^
[INFO] [stderr]    |               |
[INFO] [stderr]    |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `diverges`
[INFO] [stderr]   --> src/main.rs:78:1
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn diverges(x: i32) -> !{
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `testBorrow` should have a snake case name
[INFO] [stderr]    --> src/main.rs:229:4
[INFO] [stderr]     |
[INFO] [stderr] 229 | fn testBorrow(v1: &mut Vec<i32>, v2: &mut Vec<i32>){
[INFO] [stderr]     |    ^^^^^^^^^^ help: convert the identifier to snake case: `test_borrow`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "a37f71925ed19e870fa88c28e99c86e0cbb64adb7e4cc1beebc4dc63a91d893a"`
[INFO] running `"docker" "rm" "-f" "a37f71925ed19e870fa88c28e99c86e0cbb64adb7e4cc1beebc4dc63a91d893a"`
[INFO] [stdout] a37f71925ed19e870fa88c28e99c86e0cbb64adb7e4cc1beebc4dc63a91d893a