[INFO] fetching crate filter_ast 0.2.0...
[INFO] checking filter_ast-0.2.0 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate filter_ast 0.2.0 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate filter_ast 0.2.0 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "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-27/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bdcb1482bbb5ff7b210826522259c33abaff802fe7b01d481f4953785822eae
[INFO] running `Command { std: "docker" "start" "-a" "7bdcb1482bbb5ff7b210826522259c33abaff802fe7b01d481f4953785822eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bdcb1482bbb5ff7b210826522259c33abaff802fe7b01d481f4953785822eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bdcb1482bbb5ff7b210826522259c33abaff802fe7b01d481f4953785822eae", kill_on_drop: false }`
[INFO] [stdout] 7bdcb1482bbb5ff7b210826522259c33abaff802fe7b01d481f4953785822eae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a9a61f68e24280439252b53de08d44ff487d12679d1bf0d3acf62fb75ede9f9
[INFO] running `Command { std: "docker" "start" "-a" "0a9a61f68e24280439252b53de08d44ff487d12679d1bf0d3acf62fb75ede9f9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 2.03s
[INFO] running `Command { std: "docker" "inspect" "0a9a61f68e24280439252b53de08d44ff487d12679d1bf0d3acf62fb75ede9f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a9a61f68e24280439252b53de08d44ff487d12679d1bf0d3acf62fb75ede9f9", kill_on_drop: false }`
[INFO] [stdout] 0a9a61f68e24280439252b53de08d44ff487d12679d1bf0d3acf62fb75ede9f9