[INFO] fetching crate filter_ast 0.2.0...
[INFO] checking filter_ast-0.2.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate filter_ast 0.2.0 into /workspace/builds/worker-106/source
[INFO] validating manifest of crates.io crate filter_ast 0.2.0 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 filter_ast 0.2.0
[INFO] finished tweaking crates.io crate filter_ast 0.2.0
[INFO] tweaked toml for crates.io crate filter_ast 0.2.0 written to /workspace/builds/worker-106/source/Cargo.toml
[INFO] crate crates.io crate filter_ast 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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] 1739ccd95f2ff53d6ea0521af0ee2972fcaa6d181b1ad8896333a0f87184b9ab
[INFO] running `Command { std: "docker" "start" "-a" "1739ccd95f2ff53d6ea0521af0ee2972fcaa6d181b1ad8896333a0f87184b9ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1739ccd95f2ff53d6ea0521af0ee2972fcaa6d181b1ad8896333a0f87184b9ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1739ccd95f2ff53d6ea0521af0ee2972fcaa6d181b1ad8896333a0f87184b9ab", kill_on_drop: false }`
[INFO] [stdout] 1739ccd95f2ff53d6ea0521af0ee2972fcaa6d181b1ad8896333a0f87184b9ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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] 4674ee5a0f2a26cda99f0974ffd18baa8fc7decceb6fbe8283b3f79a97868de2
[INFO] running `Command { std: "docker" "start" "-a" "4674ee5a0f2a26cda99f0974ffd18baa8fc7decceb6fbe8283b3f79a97868de2", kill_on_drop: false }`
[INFO] [stderr]     Checking filter_ast v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Tag`
[INFO] [stdout]  --> examples/schema_validation.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Tag,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.09s
[INFO] running `Command { std: "docker" "inspect" "4674ee5a0f2a26cda99f0974ffd18baa8fc7decceb6fbe8283b3f79a97868de2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4674ee5a0f2a26cda99f0974ffd18baa8fc7decceb6fbe8283b3f79a97868de2", kill_on_drop: false }`
[INFO] [stdout] 4674ee5a0f2a26cda99f0974ffd18baa8fc7decceb6fbe8283b3f79a97868de2
