[INFO] fetching crate marshmallow_macros 0.1.0...
[INFO] checking marshmallow_macros-0.1.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate marshmallow_macros 0.1.0 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate marshmallow_macros 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate marshmallow_macros 0.1.0
[INFO] finished tweaking crates.io crate marshmallow_macros 0.1.0
[INFO] tweaked toml for crates.io crate marshmallow_macros 0.1.0 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d2a9eeb3decbc08e14dfb2aec7a9fc74d64cdd9611bd9fc6b97108b0ef1ffa0
[INFO] running `Command { std: "docker" "start" "-a" "9d2a9eeb3decbc08e14dfb2aec7a9fc74d64cdd9611bd9fc6b97108b0ef1ffa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d2a9eeb3decbc08e14dfb2aec7a9fc74d64cdd9611bd9fc6b97108b0ef1ffa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d2a9eeb3decbc08e14dfb2aec7a9fc74d64cdd9611bd9fc6b97108b0ef1ffa0", kill_on_drop: false }`
[INFO] [stdout] 9d2a9eeb3decbc08e14dfb2aec7a9fc74d64cdd9611bd9fc6b97108b0ef1ffa0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e69f4bbcaec1628e53439dfc798a8cdd7ce313995b0658e1ec146ddf3304cde
[INFO] running `Command { std: "docker" "start" "-a" "1e69f4bbcaec1628e53439dfc798a8cdd7ce313995b0658e1ec146ddf3304cde", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]     Checking quote v1.0.10
[INFO] [stderr]     Checking syn v1.0.80
[INFO] [stderr]     Checking marshmallow_macros v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]  --> src/lib.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn runner(attr: TokenStream, item: TokenStream) -> TokenStream {
[INFO] [stdout]   |               ^^^^ help: if this is intentional, prefix it with an underscore: `_attr`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]  --> src/lib.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn runner(attr: TokenStream, item: TokenStream) -> TokenStream {
[INFO] [stdout]   |               ^^^^ help: if this is intentional, prefix it with an underscore: `_attr`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.53s
[INFO] running `Command { std: "docker" "inspect" "1e69f4bbcaec1628e53439dfc798a8cdd7ce313995b0658e1ec146ddf3304cde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e69f4bbcaec1628e53439dfc798a8cdd7ce313995b0658e1ec146ddf3304cde", kill_on_drop: false }`
[INFO] [stdout] 1e69f4bbcaec1628e53439dfc798a8cdd7ce313995b0658e1ec146ddf3304cde
