[INFO] cloning repository https://github.com/SyedHzf/data_struct
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SyedHzf/data_struct" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSyedHzf%2Fdata_struct", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSyedHzf%2Fdata_struct'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 68561e3294bd74705448b701baa359cae008cd73
[INFO] checking SyedHzf/data_struct against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSyedHzf%2Fdata_struct" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SyedHzf/data_struct on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SyedHzf/data_struct
[INFO] finished tweaking git repo https://github.com/SyedHzf/data_struct
[INFO] tweaked toml for git repo https://github.com/SyedHzf/data_struct written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/SyedHzf/data_struct already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4e222413e3a48bd5ae76ae4e4d4e776c73b5e051069f655f05a08e9bcb5a145
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f4e222413e3a48bd5ae76ae4e4d4e776c73b5e051069f655f05a08e9bcb5a145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4e222413e3a48bd5ae76ae4e4d4e776c73b5e051069f655f05a08e9bcb5a145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4e222413e3a48bd5ae76ae4e4d4e776c73b5e051069f655f05a08e9bcb5a145", kill_on_drop: false }`
[INFO] [stdout] f4e222413e3a48bd5ae76ae4e4d4e776c73b5e051069f655f05a08e9bcb5a145
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59a7515b0f922aa7e24480eda1c0215c70c133fa26bca19210d6c700b6f45a88
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "59a7515b0f922aa7e24480eda1c0215c70c133fa26bca19210d6c700b6f45a88", kill_on_drop: false }`
[INFO] [stderr]     Checking Data_Structures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]  --> src/LinkedList.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     value: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deleteFirst`
[INFO] [stdout]   --> src/LinkedList.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn deleteFirst(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Data_Structures` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `data_structures`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `LinkedList` should have a snake case name
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | mod LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^ help: convert the identifier to snake case: `linked_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inertFirst` should have a snake case name
[INFO] [stdout]   --> src/LinkedList.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn inertFirst(&mut self, value: String) {
[INFO] [stdout]    |            ^^^^^^^^^^ help: convert the identifier to snake case: `inert_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deleteFirst` should have a snake case name
[INFO] [stdout]   --> src/LinkedList.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn deleteFirst(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^ help: convert the identifier to snake case: `delete_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]  --> src/LinkedList.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     value: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deleteFirst`
[INFO] [stdout]   --> src/LinkedList.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn deleteFirst(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Data_Structures` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `data_structures`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `LinkedList` should have a snake case name
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | mod LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^ help: convert the identifier to snake case: `linked_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inertFirst` should have a snake case name
[INFO] [stdout]   --> src/LinkedList.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn inertFirst(&mut self, value: String) {
[INFO] [stdout]    |            ^^^^^^^^^^ help: convert the identifier to snake case: `inert_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deleteFirst` should have a snake case name
[INFO] [stdout]   --> src/LinkedList.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn deleteFirst(&mut self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^ help: convert the identifier to snake case: `delete_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "59a7515b0f922aa7e24480eda1c0215c70c133fa26bca19210d6c700b6f45a88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59a7515b0f922aa7e24480eda1c0215c70c133fa26bca19210d6c700b6f45a88", kill_on_drop: false }`
[INFO] [stdout] 59a7515b0f922aa7e24480eda1c0215c70c133fa26bca19210d6c700b6f45a88