[INFO] fetching crate ffmpeg-frame-grabber 0.1.0...
[INFO] checking ffmpeg-frame-grabber-0.1.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate ffmpeg-frame-grabber 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate ffmpeg-frame-grabber 0.1.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ffmpeg-frame-grabber 0.1.0
[INFO] finished tweaking crates.io crate ffmpeg-frame-grabber 0.1.0
[INFO] tweaked toml for crates.io crate ffmpeg-frame-grabber 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate ffmpeg-frame-grabber 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] 524bd9f04964cbd620a9f1683b85d75bc45fe103d16fdd2a53d435aaee7de349
[INFO] running `Command { std: "docker" "start" "-a" "524bd9f04964cbd620a9f1683b85d75bc45fe103d16fdd2a53d435aaee7de349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "524bd9f04964cbd620a9f1683b85d75bc45fe103d16fdd2a53d435aaee7de349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "524bd9f04964cbd620a9f1683b85d75bc45fe103d16fdd2a53d435aaee7de349", kill_on_drop: false }`
[INFO] [stdout] 524bd9f04964cbd620a9f1683b85d75bc45fe103d16fdd2a53d435aaee7de349
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad8c1376ba49a5c0a7b6f59fb9112630d3de2a3ef57f89576991f145a4688376
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[INFO] [stdout] warning: fields `codec_name`, `codec_type`, and `r_frame_rate` are never read
[INFO] [stdout]    --> src/ffprobe.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 137 | struct FFProbeStreamInfo {
[INFO] [stdout]     |        ----------------- fields in this struct
[INFO] [stdout] 138 |     codec_name: String,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 139 |     codec_type: String,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 145 |     r_frame_rate: f64,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FFProbeStreamInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tags` is never read
[INFO] [stdout]    --> src/ffprobe.rs:156:5
[INFO] [stdout]     |
[INFO] [stdout] 153 | struct FFProbeFormat {
[INFO] [stdout]     |        ------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 156 |     tags: HashMap<String, String>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FFProbeFormat` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `codec_name`, `codec_type`, and `r_frame_rate` are never read
[INFO] [stdout]    --> src/ffprobe.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 137 | struct FFProbeStreamInfo {
[INFO] [stdout]     |        ----------------- fields in this struct
[INFO] [stdout] 138 |     codec_name: String,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 139 |     codec_type: String,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 145 |     r_frame_rate: f64,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FFProbeStreamInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tags` is never read
[INFO] [stdout]    --> src/ffprobe.rs:156:5
[INFO] [stdout]     |
[INFO] [stdout] 153 | struct FFProbeFormat {
[INFO] [stdout]     |        ------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 156 |     tags: HashMap<String, String>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FFProbeFormat` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.57s
[INFO] running `Command { std: "docker" "inspect" "ad8c1376ba49a5c0a7b6f59fb9112630d3de2a3ef57f89576991f145a4688376", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad8c1376ba49a5c0a7b6f59fb9112630d3de2a3ef57f89576991f145a4688376", kill_on_drop: false }`
[INFO] [stdout] ad8c1376ba49a5c0a7b6f59fb9112630d3de2a3ef57f89576991f145a4688376