[INFO] fetching crate unit6 0.1.0...
[INFO] checking unit6-0.1.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate unit6 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate unit6 0.1.0
[INFO] finished tweaking crates.io crate unit6 0.1.0
[INFO] tweaked toml for crates.io crate unit6 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unit6 0.1.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate unit6 0.1.0 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4664e8476b4281888045fe601ed233b8793ae26b32144aed32d44476b5edde49
[INFO] running `Command { std: "docker" "start" "-a" "4664e8476b4281888045fe601ed233b8793ae26b32144aed32d44476b5edde49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4664e8476b4281888045fe601ed233b8793ae26b32144aed32d44476b5edde49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4664e8476b4281888045fe601ed233b8793ae26b32144aed32d44476b5edde49", kill_on_drop: false }`
[INFO] [stdout] 4664e8476b4281888045fe601ed233b8793ae26b32144aed32d44476b5edde49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f821dd18a791449cb5cc199fb13b7afc304fe2c1665e3aab617ba7991d533186
[INFO] running `Command { std: "docker" "start" "-a" "f821dd18a791449cb5cc199fb13b7afc304fe2c1665e3aab617ba7991d533186", kill_on_drop: false }`
[INFO] [stderr]     Checking unit6 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Ipv4` is never constructed
[INFO] [stdout]   --> src/main.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Ipv4 {}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ipv6` is never constructed
[INFO] [stdout]   --> src/main.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Ipv6 {}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddressKind` is never used
[INFO] [stdout]   --> src/main.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum IpAddressKind {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]   --> src/main.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl IpAddressKind {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] 36 |     fn to_string(&self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | enum Message {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 45 |     //没有任何关联数据
[INFO] [stdout] 46 |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 47 |     //匿名结构体
[INFO] [stdout] 48 |     Move { x: i32, y: i32 },
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     ChangeColor(i32, i32, i32),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ipv4` is never constructed
[INFO] [stdout]   --> src/main.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Ipv4 {}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ipv6` is never constructed
[INFO] [stdout]   --> src/main.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Ipv6 {}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddressKind` is never used
[INFO] [stdout]   --> src/main.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum IpAddressKind {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]   --> src/main.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl IpAddressKind {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] 36 |     fn to_string(&self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | enum Message {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 45 |     //没有任何关联数据
[INFO] [stdout] 46 |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 47 |     //匿名结构体
[INFO] [stdout] 48 |     Move { x: i32, y: i32 },
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     ChangeColor(i32, i32, i32),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "f821dd18a791449cb5cc199fb13b7afc304fe2c1665e3aab617ba7991d533186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f821dd18a791449cb5cc199fb13b7afc304fe2c1665e3aab617ba7991d533186", kill_on_drop: false }`
[INFO] [stdout] f821dd18a791449cb5cc199fb13b7afc304fe2c1665e3aab617ba7991d533186