[INFO] fetching crate art_rust_lib 0.1.1...
[INFO] checking art_rust_lib-0.1.1 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate art_rust_lib 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate art_rust_lib 0.1.1
[INFO] finished tweaking crates.io crate art_rust_lib 0.1.1
[INFO] tweaked toml for crates.io crate art_rust_lib 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate art_rust_lib 0.1.1 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate art_rust_lib 0.1.1 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8a1c83d1515173e38074653ec1cc3c6f5f7707815f465b7059da66fe04bec7f
[INFO] running `Command { std: "docker" "start" "-a" "f8a1c83d1515173e38074653ec1cc3c6f5f7707815f465b7059da66fe04bec7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8a1c83d1515173e38074653ec1cc3c6f5f7707815f465b7059da66fe04bec7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8a1c83d1515173e38074653ec1cc3c6f5f7707815f465b7059da66fe04bec7f", kill_on_drop: false }`
[INFO] [stdout] f8a1c83d1515173e38074653ec1cc3c6f5f7707815f465b7059da66fe04bec7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05be842b1e57abda68ff42e976ab1d06a0f78a18257e209c4ea9ea13eae88ebd
[INFO] running `Command { std: "docker" "start" "-a" "05be842b1e57abda68ff42e976ab1d06a0f78a18257e209c4ea9ea13eae88ebd", kill_on_drop: false }`
[INFO] [stderr]     Checking art_rust_lib v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> PrimaryColor {
[INFO] [stdout]    |              ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib.rs:17:32
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> PrimaryColor {
[INFO] [stdout]    |                                ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> PrimaryColor {
[INFO] [stdout]    |              ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib.rs:17:32
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> PrimaryColor {
[INFO] [stdout]    |                                ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let result = mix(color, PrimaryColor::Red);
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let result = mix(color, PrimaryColor::Red);
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "05be842b1e57abda68ff42e976ab1d06a0f78a18257e209c4ea9ea13eae88ebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05be842b1e57abda68ff42e976ab1d06a0f78a18257e209c4ea9ea13eae88ebd", kill_on_drop: false }`
[INFO] [stdout] 05be842b1e57abda68ff42e976ab1d06a0f78a18257e209c4ea9ea13eae88ebd