[INFO] cloning repository https://github.com/AugustDev/rust-data-structures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AugustDev/rust-data-structures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAugustDev%2Frust-data-structures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAugustDev%2Frust-data-structures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca742ebd5e08a6d9effe99414eaa01f0cecb1634
[INFO] checking AugustDev/rust-data-structures against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAugustDev%2Frust-data-structures" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AugustDev/rust-data-structures on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AugustDev/rust-data-structures
[INFO] finished tweaking git repo https://github.com/AugustDev/rust-data-structures
[INFO] tweaked toml for git repo https://github.com/AugustDev/rust-data-structures written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/AugustDev/rust-data-structures already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 28c8611a7546552a850efc1506ecec8501c3f15c1b6832655aa376efc06f8acd
[INFO] running `Command { std: "docker" "start" "-a" "28c8611a7546552a850efc1506ecec8501c3f15c1b6832655aa376efc06f8acd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28c8611a7546552a850efc1506ecec8501c3f15c1b6832655aa376efc06f8acd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28c8611a7546552a850efc1506ecec8501c3f15c1b6832655aa376efc06f8acd", kill_on_drop: false }`
[INFO] [stdout] 28c8611a7546552a850efc1506ecec8501c3f15c1b6832655aa376efc06f8acd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0dd2ebde0d723ae6adab4b0a7802c6cce0e1240e5795a2d487cd0c3aef65cbe0
[INFO] running `Command { std: "docker" "start" "-a" "0dd2ebde0d723ae6adab4b0a7802c6cce0e1240e5795a2d487cd0c3aef65cbe0", kill_on_drop: false }`
[INFO] [stderr]     Checking data_structures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/data_structures.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let x = linked_list::LinkedList { val: 10 };
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `testshit`
[INFO] [stdout]  --> src/data_structures.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn testshit() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/data_structures.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let x = linked_list::LinkedList { val: 10 };
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `testshit`
[INFO] [stdout]  --> src/data_structures.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn testshit() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "0dd2ebde0d723ae6adab4b0a7802c6cce0e1240e5795a2d487cd0c3aef65cbe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dd2ebde0d723ae6adab4b0a7802c6cce0e1240e5795a2d487cd0c3aef65cbe0", kill_on_drop: false }`
[INFO] [stdout] 0dd2ebde0d723ae6adab4b0a7802c6cce0e1240e5795a2d487cd0c3aef65cbe0