[INFO] fetching crate unit4 0.1.0...
[INFO] checking unit4-0.1.0 against master#8a65ee08296b36342bf7c3cdc15312ccbc357227 for pr-142704
[INFO] extracting crate unit4 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate unit4 0.1.0 on toolchain 8a65ee08296b36342bf7c3cdc15312ccbc357227
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unit4 0.1.0
[INFO] finished tweaking crates.io crate unit4 0.1.0
[INFO] tweaked toml for crates.io crate unit4 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate unit4 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" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2385594c4746383e7dacebb8bcf43cdf8e484d84317efef00bd25b8c60f433cd
[INFO] running `Command { std: "docker" "start" "-a" "2385594c4746383e7dacebb8bcf43cdf8e484d84317efef00bd25b8c60f433cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2385594c4746383e7dacebb8bcf43cdf8e484d84317efef00bd25b8c60f433cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2385594c4746383e7dacebb8bcf43cdf8e484d84317efef00bd25b8c60f433cd", kill_on_drop: false }`
[INFO] [stdout] 2385594c4746383e7dacebb8bcf43cdf8e484d84317efef00bd25b8c60f433cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 619f977e9cbdbcf7a8fab012073a89be71882aad2f5a49c79e716babfe4a523b
[INFO] running `Command { std: "docker" "start" "-a" "619f977e9cbdbcf7a8fab012073a89be71882aad2f5a49c79e716babfe4a523b", kill_on_drop: false }`
[INFO] [stderr]     Checking unit4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut str = String::from("hello world");
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Square` is never constructed
[INFO] [stdout]   --> src/main.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Square {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `copy_ing`, `get_height`, `set_height`, and `move_to` are never used
[INFO] [stdout]    --> src/main.rs:64:8
[INFO] [stdout]     |
[INFO] [stdout] 62  | impl Square {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] 63  |     //关联函数，没有self型参
[INFO] [stdout] 64  |     fn new(height: u32, width: u32) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79  |     fn copy_ing(s: &Self) -> Self {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89  |     fn get_height(&self) -> u32 {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |     fn set_height(&mut self, height: u32) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn move_to(self) -> Self {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]    --> src/main.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 | struct Color(i32, i32, i32);
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut str = String::from("hello world");
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Square` is never constructed
[INFO] [stdout]   --> src/main.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Square {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `copy_ing`, `get_height`, `set_height`, and `move_to` are never used
[INFO] [stdout]    --> src/main.rs:64:8
[INFO] [stdout]     |
[INFO] [stdout] 62  | impl Square {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] 63  |     //关联函数，没有self型参
[INFO] [stdout] 64  |     fn new(height: u32, width: u32) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79  |     fn copy_ing(s: &Self) -> Self {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89  |     fn get_height(&self) -> u32 {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |     fn set_height(&mut self, height: u32) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn move_to(self) -> Self {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]    --> src/main.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 | struct Color(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" "619f977e9cbdbcf7a8fab012073a89be71882aad2f5a49c79e716babfe4a523b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "619f977e9cbdbcf7a8fab012073a89be71882aad2f5a49c79e716babfe4a523b", kill_on_drop: false }`
[INFO] [stdout] 619f977e9cbdbcf7a8fab012073a89be71882aad2f5a49c79e716babfe4a523b
