[INFO] cloning repository https://github.com/Hfalcon13/my-immutable-collections
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Hfalcon13/my-immutable-collections" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHfalcon13%2Fmy-immutable-collections", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHfalcon13%2Fmy-immutable-collections'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 29f23db6daca069aed930b75d95700d337b23f11
[INFO] checking Hfalcon13/my-immutable-collections against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHfalcon13%2Fmy-immutable-collections" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Hfalcon13/my-immutable-collections on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Hfalcon13/my-immutable-collections
[INFO] finished tweaking git repo https://github.com/Hfalcon13/my-immutable-collections
[INFO] tweaked toml for git repo https://github.com/Hfalcon13/my-immutable-collections written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Hfalcon13/my-immutable-collections already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20e6fab07053cac11814b8fbcda63fd3f35cdfa7ea0bfb4a045e5d8ac287245a
[INFO] running `Command { std: "docker" "start" "-a" "20e6fab07053cac11814b8fbcda63fd3f35cdfa7ea0bfb4a045e5d8ac287245a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20e6fab07053cac11814b8fbcda63fd3f35cdfa7ea0bfb4a045e5d8ac287245a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20e6fab07053cac11814b8fbcda63fd3f35cdfa7ea0bfb4a045e5d8ac287245a", kill_on_drop: false }`
[INFO] [stdout] 20e6fab07053cac11814b8fbcda63fd3f35cdfa7ea0bfb4a045e5d8ac287245a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de97f6fb09a133c6d341a7ec802cefba76b377d71f4b71b0d50f3e64b7cdd7f8
[INFO] running `Command { std: "docker" "start" "-a" "de97f6fb09a133c6d341a7ec802cefba76b377d71f4b71b0d50f3e64b7cdd7f8", kill_on_drop: false }`
[INFO] [stderr]     Checking collections v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Thili` and `Sofi` are never constructed
[INFO] [stdout]  --> src/traversion_options.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum TraversionOptions {
[INFO] [stdout]   |          ----------------- variants in this enum
[INFO] [stdout] 5 |     Thili,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     Tohi,
[INFO] [stdout] 7 |     Sofi
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TraversionOptions` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Thili` and `Sofi` are never constructed
[INFO] [stdout]  --> src/traversion_options.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum TraversionOptions {
[INFO] [stdout]   |          ----------------- variants in this enum
[INFO] [stdout] 5 |     Thili,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     Tohi,
[INFO] [stdout] 7 |     Sofi
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TraversionOptions` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/list.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Node<T>
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has a derived impl for the trait `Default`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/list.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Node<T>
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has a derived impl for the trait `Default`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `insert` are never used
[INFO] [stdout]   --> src/list.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T> Node<T>
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 11 | {
[INFO] [stdout] 12 |     pub fn new(val: T) -> Node<T>
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn insert(self, val: T) -> Node<T>
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `contains` is never used
[INFO] [stdout]   --> src/list.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl<T: PartialEq> Node<T>
[INFO] [stdout]    | -------------------------- method in this implementation
[INFO] [stdout] 30 | {
[INFO] [stdout] 31 |     pub fn contains(self, val: T) -> bool
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `insert` are never used
[INFO] [stdout]   --> src/list.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T> Node<T>
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 11 | {
[INFO] [stdout] 12 |     pub fn new(val: T) -> Node<T>
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn insert(self, val: T) -> Node<T>
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `contains` is never used
[INFO] [stdout]   --> src/list.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl<T: PartialEq> Node<T>
[INFO] [stdout]    | -------------------------- method in this implementation
[INFO] [stdout] 30 | {
[INFO] [stdout] 31 |     pub fn contains(self, val: T) -> bool
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "de97f6fb09a133c6d341a7ec802cefba76b377d71f4b71b0d50f3e64b7cdd7f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de97f6fb09a133c6d341a7ec802cefba76b377d71f4b71b0d50f3e64b7cdd7f8", kill_on_drop: false }`
[INFO] [stdout] de97f6fb09a133c6d341a7ec802cefba76b377d71f4b71b0d50f3e64b7cdd7f8