[INFO] updating cached repository https://github.com/DaRavenox/Rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b4507fe6801b4b1075b3b7d82f4388b34eae37e3
[INFO] checking DaRavenox/Rust against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDaRavenox%2FRust" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DaRavenox/Rust on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/DaRavenox/Rust
[INFO] finished tweaking git repo https://github.com/DaRavenox/Rust
[INFO] tweaked toml for git repo https://github.com/DaRavenox/Rust written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/DaRavenox/Rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 686b4840fddf0e5f54c31d5a40ac796c4fff18ec61401608cfa9ad52d1dd5e59
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "686b4840fddf0e5f54c31d5a40ac796c4fff18ec61401608cfa9ad52d1dd5e59"`
[INFO] [stderr]     Checking hello_rust v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `y`
[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]   |           ^^^^^ help: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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:78:4
[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:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 |       let mut y: i32 = 12; // mutable, this value CAN be changed;
[INFO] [stderr]   |           ^^^^^ help: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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:78:4
[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: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `"docker" "inspect" "686b4840fddf0e5f54c31d5a40ac796c4fff18ec61401608cfa9ad52d1dd5e59"`
[INFO] running `"docker" "rm" "-f" "686b4840fddf0e5f54c31d5a40ac796c4fff18ec61401608cfa9ad52d1dd5e59"`
[INFO] [stdout] 686b4840fddf0e5f54c31d5a40ac796c4fff18ec61401608cfa9ad52d1dd5e59