[INFO] fetching crate matroska-demuxer 0.2.0...
[INFO] checking matroska-demuxer-0.2.0 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate matroska-demuxer 0.2.0 into /workspace/builds/worker-83/source
[INFO] validating manifest of crates.io crate matroska-demuxer 0.2.0 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate matroska-demuxer 0.2.0
[INFO] finished tweaking crates.io crate matroska-demuxer 0.2.0
[INFO] tweaked toml for crates.io crate matroska-demuxer 0.2.0 written to /workspace/builds/worker-83/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 118e3618148a99f96d834f660687ec593f7b450dabd28e6c4938a10b84d73204
[INFO] running `Command { std: "docker" "start" "-a" "118e3618148a99f96d834f660687ec593f7b450dabd28e6c4938a10b84d73204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "118e3618148a99f96d834f660687ec593f7b450dabd28e6c4938a10b84d73204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "118e3618148a99f96d834f660687ec593f7b450dabd28e6c4938a10b84d73204", kill_on_drop: false }`
[INFO] [stdout] 118e3618148a99f96d834f660687ec593f7b450dabd28e6c4938a10b84d73204
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72145a4e59e932f8bf65621877fc98365da56047b3356762403ed935f02da51a
[INFO] running `Command { std: "docker" "start" "-a" "72145a4e59e932f8bf65621877fc98365da56047b3356762403ed935f02da51a", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking matroska-demuxer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `primary_b_chromaticity_x`
[INFO] [stdout]    --> src/lib.rs:778:5
[INFO] [stdout]     |
[INFO] [stdout] 778 |     primary_b_chromaticity_x: Option<f64>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `primary_b_chromaticity_y`
[INFO] [stdout]    --> src/lib.rs:779:5
[INFO] [stdout]     |
[INFO] [stdout] 779 |     primary_b_chromaticity_y: Option<f64>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `white_point_chromaticity_x`
[INFO] [stdout]    --> src/lib.rs:780:5
[INFO] [stdout]     |
[INFO] [stdout] 780 |     white_point_chromaticity_x: Option<f64>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `white_point_chromaticity_y`
[INFO] [stdout]    --> src/lib.rs:781:5
[INFO] [stdout]     |
[INFO] [stdout] 781 |     white_point_chromaticity_y: Option<f64>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `target_type`
[INFO] [stdout]     --> src/lib.rs:1194:5
[INFO] [stdout]      |
[INFO] [stdout] 1194 |     target_type: Option<String>,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `track`
[INFO] [stdout]     --> src/lib.rs:1337:5
[INFO] [stdout]      |
[INFO] [stdout] 1337 |     track: u64,
[INFO] [stdout]      |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `duration`
[INFO] [stdout]     --> src/lib.rs:1340:5
[INFO] [stdout]      |
[INFO] [stdout] 1340 |     duration: Option<u64>,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `block_number`
[INFO] [stdout]     --> src/lib.rs:1341:5
[INFO] [stdout]      |
[INFO] [stdout] 1341 |     block_number: Option<u64>,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `primary_b_chromaticity_x`
[INFO] [stdout]    --> src/lib.rs:778:5
[INFO] [stdout]     |
[INFO] [stdout] 778 |     primary_b_chromaticity_x: Option<f64>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `primary_b_chromaticity_y`
[INFO] [stdout]    --> src/lib.rs:779:5
[INFO] [stdout]     |
[INFO] [stdout] 779 |     primary_b_chromaticity_y: Option<f64>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `white_point_chromaticity_x`
[INFO] [stdout]    --> src/lib.rs:780:5
[INFO] [stdout]     |
[INFO] [stdout] 780 |     white_point_chromaticity_x: Option<f64>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `white_point_chromaticity_y`
[INFO] [stdout]    --> src/lib.rs:781:5
[INFO] [stdout]     |
[INFO] [stdout] 781 |     white_point_chromaticity_y: Option<f64>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `target_type`
[INFO] [stdout]     --> src/lib.rs:1194:5
[INFO] [stdout]      |
[INFO] [stdout] 1194 |     target_type: Option<String>,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `track`
[INFO] [stdout]     --> src/lib.rs:1337:5
[INFO] [stdout]      |
[INFO] [stdout] 1337 |     track: u64,
[INFO] [stdout]      |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `duration`
[INFO] [stdout]     --> src/lib.rs:1340:5
[INFO] [stdout]      |
[INFO] [stdout] 1340 |     duration: Option<u64>,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `block_number`
[INFO] [stdout]     --> src/lib.rs:1341:5
[INFO] [stdout]      |
[INFO] [stdout] 1341 |     block_number: Option<u64>,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "72145a4e59e932f8bf65621877fc98365da56047b3356762403ed935f02da51a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72145a4e59e932f8bf65621877fc98365da56047b3356762403ed935f02da51a", kill_on_drop: false }`
[INFO] [stdout] 72145a4e59e932f8bf65621877fc98365da56047b3356762403ed935f02da51a