[INFO] fetching crate fake-art 0.1.1...
[INFO] checking fake-art-0.1.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate fake-art 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate fake-art 0.1.1
[INFO] finished tweaking crates.io crate fake-art 0.1.1
[INFO] tweaked toml for crates.io crate fake-art 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fake-art 0.1.1 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 fake-art 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4584905756a0a137a81de35f70322230801175b1b622505016585eb1f349b7fc
[INFO] running `Command { std: "docker" "start" "-a" "4584905756a0a137a81de35f70322230801175b1b622505016585eb1f349b7fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4584905756a0a137a81de35f70322230801175b1b622505016585eb1f349b7fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4584905756a0a137a81de35f70322230801175b1b622505016585eb1f349b7fc", kill_on_drop: false }`
[INFO] [stdout] 4584905756a0a137a81de35f70322230801175b1b622505016585eb1f349b7fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 3b6f0741c2e100286a6e37b6728e110aa5e929cb4d517321522ff77c18e7ec8d
[INFO] running `Command { std: "docker" "start" "-a" "3b6f0741c2e100286a6e37b6728e110aa5e929cb4d517321522ff77c18e7ec8d", kill_on_drop: false }`
[INFO] [stderr]     Checking fake-art v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `primary_color`
[INFO] [stdout]   --> src/lib.rs:27:16
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn mix(primary_color: PrimaryColor, secondary_color: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_primary_color`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `secondary_color`
[INFO] [stdout]   --> src/lib.rs:27:45
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn mix(primary_color: PrimaryColor, secondary_color: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_secondary_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `primary_color`
[INFO] [stdout]   --> src/lib.rs:27:16
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn mix(primary_color: PrimaryColor, secondary_color: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_primary_color`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `secondary_color`
[INFO] [stdout]   --> src/lib.rs:27:45
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn mix(primary_color: PrimaryColor, secondary_color: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_secondary_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mix_yellow`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mix_yellow = mix(red, yellow);
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mix_yellow`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mix_yellow`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mix_yellow = mix(red, yellow);
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mix_yellow`
[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 0.30s
[INFO] running `Command { std: "docker" "inspect" "3b6f0741c2e100286a6e37b6728e110aa5e929cb4d517321522ff77c18e7ec8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b6f0741c2e100286a6e37b6728e110aa5e929cb4d517321522ff77c18e7ec8d", kill_on_drop: false }`
[INFO] [stdout] 3b6f0741c2e100286a6e37b6728e110aa5e929cb4d517321522ff77c18e7ec8d