[INFO] fetching crate fastnbt 0.18.0...
[INFO] checking fastnbt-0.18.0 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate fastnbt 0.18.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate fastnbt 0.18.0 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fastnbt 0.18.0
[INFO] finished tweaking crates.io crate fastnbt 0.18.0
[INFO] tweaked toml for crates.io crate fastnbt 0.18.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate fastnbt 0.18.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c28acb8d250493bed3212faf1161822e180b29d92f9dfdb941b48005058f5c15
[INFO] running `Command { std: "docker" "start" "-a" "c28acb8d250493bed3212faf1161822e180b29d92f9dfdb941b48005058f5c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c28acb8d250493bed3212faf1161822e180b29d92f9dfdb941b48005058f5c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c28acb8d250493bed3212faf1161822e180b29d92f9dfdb941b48005058f5c15", kill_on_drop: false }`
[INFO] [stdout] c28acb8d250493bed3212faf1161822e180b29d92f9dfdb941b48005058f5c15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0b24e3cb83137b6d0c3d8765f69d0e63e06a55c34cf83cedcd63ad15514b0b8
[INFO] running `Command { std: "docker" "start" "-a" "f0b24e3cb83137b6d0c3d8765f69d0e63e06a55c34cf83cedcd63ad15514b0b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking fastnbt v0.18.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `sections`
[INFO] [stdout]    --> src/test/minecraft_chunk.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         pub sections: Option<Vec<Section<'a>>>,
[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 21.56s
[INFO] running `Command { std: "docker" "inspect" "f0b24e3cb83137b6d0c3d8765f69d0e63e06a55c34cf83cedcd63ad15514b0b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0b24e3cb83137b6d0c3d8765f69d0e63e06a55c34cf83cedcd63ad15514b0b8", kill_on_drop: false }`
[INFO] [stdout] f0b24e3cb83137b6d0c3d8765f69d0e63e06a55c34cf83cedcd63ad15514b0b8