[INFO] fetching crate graph-based-image-segmentation 0.2.1...
[INFO] checking graph-based-image-segmentation-0.2.1 against master#3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777 for pr-132289
[INFO] extracting crate graph-based-image-segmentation 0.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate graph-based-image-segmentation 0.2.1 on toolchain 3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate graph-based-image-segmentation 0.2.1
[INFO] finished tweaking crates.io crate graph-based-image-segmentation 0.2.1
[INFO] tweaked toml for crates.io crate graph-based-image-segmentation 0.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 82 packages to latest compatible versions
[INFO] [stderr]       Adding opencv v0.82.1 (available: v0.93.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded opencv-binding-generator v0.66.0
[INFO] [stderr]   Downloaded opencv v0.82.1
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e84ba685ec891e27c1f4816090a52c5e27fd793b74e4fc8ba3a5f32a5a1fe21e
[INFO] running `Command { std: "docker" "start" "-a" "e84ba685ec891e27c1f4816090a52c5e27fd793b74e4fc8ba3a5f32a5a1fe21e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e84ba685ec891e27c1f4816090a52c5e27fd793b74e4fc8ba3a5f32a5a1fe21e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e84ba685ec891e27c1f4816090a52c5e27fd793b74e4fc8ba3a5f32a5a1fe21e", kill_on_drop: false }`
[INFO] [stdout] e84ba685ec891e27c1f4816090a52c5e27fd793b74e4fc8ba3a5f32a5a1fe21e
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9feb531419b2ca3c7fd0e2f8defc4624e7c7681ab7a24d59f45e315332a1722
[INFO] running `Command { std: "docker" "start" "-a" "e9feb531419b2ca3c7fd0e2f8defc4624e7c7681ab7a24d59f45e315332a1722", kill_on_drop: false }`
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[INFO] [stderr]     Checking graph-based-image-segmentation v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/graph/image_graph.rs:209:13
[INFO] [stdout]     |
[INFO] [stdout] 209 |         let mut nodes = vec![Default::default(); n];
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/graph/image_graph.rs:210:13
[INFO] [stdout]     |
[INFO] [stdout] 210 |         let mut colors = vec![Default::default(); n];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]   --> src/graph/image_graph.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl ImageGraph {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn reset(&mut self, n: usize) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/graph/image_graph.rs:209:13
[INFO] [stdout]     |
[INFO] [stdout] 209 |         let mut nodes = vec![Default::default(); n];
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/graph/image_graph.rs:210:13
[INFO] [stdout]     |
[INFO] [stdout] 210 |         let mut colors = vec![Default::default(); n];
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]   --> src/graph/image_graph.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl ImageGraph {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn reset(&mut self, n: usize) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read `benches/../../data/tree.jpg`: No such file or directory (os error 2)
[INFO] [stdout]   --> benches/performance.rs:17:32
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let tree = Mat::from_slice(include_bytes!("../../data/tree.jpg")).unwrap();
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `include_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `graph-based-image-segmentation` (bench "performance") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e9feb531419b2ca3c7fd0e2f8defc4624e7c7681ab7a24d59f45e315332a1722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9feb531419b2ca3c7fd0e2f8defc4624e7c7681ab7a24d59f45e315332a1722", kill_on_drop: false }`
[INFO] [stdout] e9feb531419b2ca3c7fd0e2f8defc4624e7c7681ab7a24d59f45e315332a1722
