[INFO] cloning repository https://github.com/soumyadeep589/Linked-List
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/soumyadeep589/Linked-List" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoumyadeep589%2FLinked-List", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoumyadeep589%2FLinked-List'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e880816f62d4efcee23c83e56f67f61d9a83f60
[INFO] checking soumyadeep589/Linked-List against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoumyadeep589%2FLinked-List" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/soumyadeep589/Linked-List on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/soumyadeep589/Linked-List
[INFO] finished tweaking git repo https://github.com/soumyadeep589/Linked-List
[INFO] tweaked toml for git repo https://github.com/soumyadeep589/Linked-List written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/soumyadeep589/Linked-List already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] 07ed85b11f742049514098f8f0ecf38ba37206023baa08e9c0a72c7ba387c2c2
[INFO] running `Command { std: "docker" "start" "-a" "07ed85b11f742049514098f8f0ecf38ba37206023baa08e9c0a72c7ba387c2c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07ed85b11f742049514098f8f0ecf38ba37206023baa08e9c0a72c7ba387c2c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07ed85b11f742049514098f8f0ecf38ba37206023baa08e9c0a72c7ba387c2c2", kill_on_drop: false }`
[INFO] [stdout] 07ed85b11f742049514098f8f0ecf38ba37206023baa08e9c0a72c7ba387c2c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] af6c9e05538c0615e0230496254ac1d2fad308a4c6b66b97721ba3857be5fb39
[INFO] running `Command { std: "docker" "start" "-a" "af6c9e05538c0615e0230496254ac1d2fad308a4c6b66b97721ba3857be5fb39", kill_on_drop: false }`
[INFO] [stderr]     Checking rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: module `linkedList_test` should have a snake case name
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | mod linkedList_test;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `linked_list_test`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/linkedList_test.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         mem::replace(last, Link::More(new_node));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `linkedList_test` should have a snake case name
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | mod linkedList_test;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `linked_list_test`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/linkedList_test.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         mem::replace(last, Link::More(new_node));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "af6c9e05538c0615e0230496254ac1d2fad308a4c6b66b97721ba3857be5fb39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af6c9e05538c0615e0230496254ac1d2fad308a4c6b66b97721ba3857be5fb39", kill_on_drop: false }`
[INFO] [stdout] af6c9e05538c0615e0230496254ac1d2fad308a4c6b66b97721ba3857be5fb39