[INFO] fetching crate ffmpeg-frame-grabber 0.1.0...
[INFO] checking ffmpeg-frame-grabber-0.1.0 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] extracting crate ffmpeg-frame-grabber 0.1.0 into /workspace/builds/worker-2-tc1/source
[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-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ffmpeg-frame-grabber 0.1.0 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded visualizer v0.1.1
[INFO] [stderr]   Downloaded snafu-derive v0.6.10
[INFO] [stderr]   Downloaded weezl v0.1.4
[INFO] [stderr]   Downloaded similar v1.3.0
[INFO] [stderr]   Downloaded gif v0.11.1
[INFO] [stderr]   Downloaded image-visualizer v0.1.1
[INFO] [stderr]   Downloaded syn v1.0.64
[INFO] [stderr]   Downloaded libc v0.2.90
[INFO] [stderr]   Downloaded insta v1.7.1
[INFO] [stderr]   Downloaded snafu v0.6.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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_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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7aaaed260e488b2c3453435434c6a9598609df2d651eb0a4a68a73625e8ded74
[INFO] running `Command { std: "docker" "start" "-a" "7aaaed260e488b2c3453435434c6a9598609df2d651eb0a4a68a73625e8ded74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7aaaed260e488b2c3453435434c6a9598609df2d651eb0a4a68a73625e8ded74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aaaed260e488b2c3453435434c6a9598609df2d651eb0a4a68a73625e8ded74", kill_on_drop: false }`
[INFO] [stdout] 7aaaed260e488b2c3453435434c6a9598609df2d651eb0a4a68a73625e8ded74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebbb3e69e61eb3e6797d260be1db2b7328c0b33aa6058f2518a3316259632b6d
[INFO] running `Command { std: "docker" "start" "-a" "ebbb3e69e61eb3e6797d260be1db2b7328c0b33aa6058f2518a3316259632b6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.90
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking weezl v0.1.4
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking similar v1.3.0
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
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[INFO] [stderr]     Checking terminal_size v0.1.16
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]    Compiling snafu-derive v0.6.10
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking snafu v0.6.10
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking visualizer v0.1.1
[INFO] [stderr]     Checking insta v1.7.1
[INFO] [stderr]     Checking ffmpeg-frame-grabber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking image-visualizer v0.1.1
[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)]` (part of `#[warn(unused)]`) 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: 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)]` (part of `#[warn(unused)]`) 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.17s
[INFO] running `Command { std: "docker" "inspect" "ebbb3e69e61eb3e6797d260be1db2b7328c0b33aa6058f2518a3316259632b6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebbb3e69e61eb3e6797d260be1db2b7328c0b33aa6058f2518a3316259632b6d", kill_on_drop: false }`
[INFO] [stdout] ebbb3e69e61eb3e6797d260be1db2b7328c0b33aa6058f2518a3316259632b6d