[INFO] fetching crate pandoc_ast 0.8.0...
[INFO] checking pandoc_ast-0.8.0 against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] extracting crate pandoc_ast 0.8.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate pandoc_ast 0.8.0 on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pandoc_ast 0.8.0
[INFO] finished tweaking crates.io crate pandoc_ast 0.8.0
[INFO] tweaked toml for crates.io crate pandoc_ast 0.8.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate pandoc_ast 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ryu v0.2.7
[INFO] [stderr]   Downloaded proc-macro2 v0.4.27
[INFO] [stderr]   Downloaded quote v0.6.11
[INFO] [stderr]   Downloaded serde_derive v1.0.89
[INFO] [stderr]   Downloaded serde_json v1.0.39
[INFO] [stderr]   Downloaded syn v0.15.29
[INFO] [stderr]   Downloaded serde v1.0.89
[INFO] [stderr]   Downloaded itoa v0.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e36ec8c3e2335bfe433f29b3284c86ae8c5da4a398e123dfcaf987c0e74d52e9
[INFO] running `Command { std: "docker" "start" "-a" "e36ec8c3e2335bfe433f29b3284c86ae8c5da4a398e123dfcaf987c0e74d52e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e36ec8c3e2335bfe433f29b3284c86ae8c5da4a398e123dfcaf987c0e74d52e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e36ec8c3e2335bfe433f29b3284c86ae8c5da4a398e123dfcaf987c0e74d52e9", kill_on_drop: false }`
[INFO] [stdout] e36ec8c3e2335bfe433f29b3284c86ae8c5da4a398e123dfcaf987c0e74d52e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d0ad4e8355bf3d583908d7df8ccb71b2a4bf6e7f5918315100097cb5297921f
[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" "1d0ad4e8355bf3d583908d7df8ccb71b2a4bf6e7f5918315100097cb5297921f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking pandoc_ast v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.78s
[INFO] running `Command { std: "docker" "inspect" "1d0ad4e8355bf3d583908d7df8ccb71b2a4bf6e7f5918315100097cb5297921f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d0ad4e8355bf3d583908d7df8ccb71b2a4bf6e7f5918315100097cb5297921f", kill_on_drop: false }`
[INFO] [stdout] 1d0ad4e8355bf3d583908d7df8ccb71b2a4bf6e7f5918315100097cb5297921f