[INFO] cloning repository https://github.com/zztkm/opencv-camera-detector
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zztkm/opencv-camera-detector" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzztkm%2Fopencv-camera-detector", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzztkm%2Fopencv-camera-detector'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4e92888ee4b5341f8a30789889eaa71c1dc232f
[INFO] checking zztkm/opencv-camera-detector against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzztkm%2Fopencv-camera-detector" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zztkm/opencv-camera-detector on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zztkm/opencv-camera-detector
[INFO] finished tweaking git repo https://github.com/zztkm/opencv-camera-detector
[INFO] tweaked toml for git repo https://github.com/zztkm/opencv-camera-detector written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/zztkm/opencv-camera-detector 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/l1npengtul/nokhwa.git`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unindent v0.2.3
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f6e354b5be75711f70aa724a029f113cdb708ba2908d2acc195f6951b428a13
[INFO] running `Command { std: "docker" "start" "-a" "0f6e354b5be75711f70aa724a029f113cdb708ba2908d2acc195f6951b428a13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f6e354b5be75711f70aa724a029f113cdb708ba2908d2acc195f6951b428a13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f6e354b5be75711f70aa724a029f113cdb708ba2908d2acc195f6951b428a13", kill_on_drop: false }`
[INFO] [stdout] 0f6e354b5be75711f70aa724a029f113cdb708ba2908d2acc195f6951b428a13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe7bcb5ed1f96835873b61a73d28571dc22c430b00af41287230e79cb319988d
[INFO] running `Command { std: "docker" "start" "-a" "fe7bcb5ed1f96835873b61a73d28571dc22c430b00af41287230e79cb319988d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
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[INFO] [stderr]    Compiling memchr v2.7.1
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[INFO] [stderr]    Compiling linux-raw-sys v0.4.13
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[INFO] [stderr]    Compiling dunce v1.0.4
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[INFO] [stderr]    Compiling libloading v0.8.3
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[INFO] [stderr]    Compiling home v0.5.9
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[INFO] [stderr]     Checking smallvec v1.13.1
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[INFO] [stderr]    Compiling pin-project-internal v1.1.5
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[INFO] [stderr]     Checking nokhwa-core v0.1.2 (https://github.com/l1npengtul/nokhwa.git?branch=0.10#c5a56bd2)
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[INFO] [stderr]     Checking flume v0.10.14
[INFO] [stderr]    Compiling pyo3-macros v0.20.3
[INFO] [stderr]     Checking nokhwa-bindings-windows v0.4.0 (https://github.com/l1npengtul/nokhwa.git?branch=0.10#c5a56bd2)
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[INFO] [stderr]     Checking nokhwa-bindings-linux v0.1.0 (https://github.com/l1npengtul/nokhwa.git?branch=0.10#c5a56bd2)
[INFO] [stderr]     Checking nokhwa v0.10.4 (https://github.com/l1npengtul/nokhwa.git?branch=0.10#c5a56bd2)
[INFO] [stderr]     Checking opencvutil v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use pyo3::{prelude::*, Python};
[INFO] [stdout]   |            ----------  ^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            the item `Python` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Python` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use pyo3::{prelude::*, Python};
[INFO] [stdout]   |            ----------  ^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            the item `Python` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.42s
[INFO] running `Command { std: "docker" "inspect" "fe7bcb5ed1f96835873b61a73d28571dc22c430b00af41287230e79cb319988d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe7bcb5ed1f96835873b61a73d28571dc22c430b00af41287230e79cb319988d", kill_on_drop: false }`
[INFO] [stdout] fe7bcb5ed1f96835873b61a73d28571dc22c430b00af41287230e79cb319988d