[INFO] fetching crate filter_ast 0.2.0...
[INFO] checking filter_ast-0.2.0 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate filter_ast 0.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate filter_ast 0.2.0 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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-1/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" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba161a4a182bce8f05bed647040a130f91beab64d1af5a52725e5e4a6fdd526c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ba161a4a182bce8f05bed647040a130f91beab64d1af5a52725e5e4a6fdd526c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba161a4a182bce8f05bed647040a130f91beab64d1af5a52725e5e4a6fdd526c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba161a4a182bce8f05bed647040a130f91beab64d1af5a52725e5e4a6fdd526c", kill_on_drop: false }`
[INFO] [stdout] ba161a4a182bce8f05bed647040a130f91beab64d1af5a52725e5e4a6fdd526c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c96958a02af1fb133bfcb637846cdd980b5ae033ba85e05d2a8f214b6ed44c4e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c96958a02af1fb133bfcb637846cdd980b5ae033ba85e05d2a8f214b6ed44c4e", 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 0.82s
[INFO] running `Command { std: "docker" "inspect" "c96958a02af1fb133bfcb637846cdd980b5ae033ba85e05d2a8f214b6ed44c4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c96958a02af1fb133bfcb637846cdd980b5ae033ba85e05d2a8f214b6ed44c4e", kill_on_drop: false }`
[INFO] [stdout] c96958a02af1fb133bfcb637846cdd980b5ae033ba85e05d2a8f214b6ed44c4e