[INFO] fetching crate checkerboard 0.1.0...
[INFO] testing checkerboard-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate checkerboard 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate checkerboard 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate checkerboard 0.1.0
[INFO] finished tweaking crates.io crate checkerboard 0.1.0
[INFO] tweaked toml for crates.io crate checkerboard 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cpp_build v0.5.6
[INFO] [stderr]   Downloaded cpp_macros v0.5.6
[INFO] [stderr]   Downloaded cpp v0.5.6
[INFO] [stderr]   Downloaded cpp_common v0.5.6
[INFO] [stderr]   Downloaded imageproc v0.18.0
[INFO] [stderr]   Downloaded opencv v0.17.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d434a7d4a724a10030a05a87c3410d65eedb677e22ae8b095c1edd067b69577
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0d434a7d4a724a10030a05a87c3410d65eedb677e22ae8b095c1edd067b69577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d434a7d4a724a10030a05a87c3410d65eedb677e22ae8b095c1edd067b69577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d434a7d4a724a10030a05a87c3410d65eedb677e22ae8b095c1edd067b69577", kill_on_drop: false }`
[INFO] [stdout] 0d434a7d4a724a10030a05a87c3410d65eedb677e22ae8b095c1edd067b69577
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efb68bc7fa944239382d74287a24a0bdad3718d245b318aaa9c32eb70ae80130
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "efb68bc7fa944239382d74287a24a0bdad3718d245b318aaa9c32eb70ae80130", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling if_rust_version v1.0.0
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling conv v0.3.3
[INFO] [stderr]    Compiling inflate v0.4.5
[INFO] [stderr]    Compiling deflate v0.7.20
[INFO] [stderr]    Compiling gif v0.10.3
[INFO] [stderr]    Compiling png v0.15.3
[INFO] [stderr]    Compiling once_cell v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling rusttype v0.8.3
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling alga v0.9.3
[INFO] [stderr]    Compiling rusttype v0.7.9
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling nalgebra v0.18.1
[INFO] [stderr]    Compiling cpp_common v0.5.6
[INFO] [stderr]    Compiling cpp_build v0.5.6
[INFO] [stderr]    Compiling tiff v0.2.2
[INFO] [stderr]    Compiling tiff v0.3.1
[INFO] [stderr]    Compiling image v0.21.3
[INFO] [stderr]    Compiling image v0.22.5
[INFO] [stderr]    Compiling cpp_macros v0.5.6
[INFO] [stderr]    Compiling opencv v0.17.3
[INFO] [stderr]    Compiling imageproc v0.18.0
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/imageproc-0.18.0/src/hog.rs:440:33
[INFO] [stdout]     |
[INFO] [stdout] 440 |             let intensity = u8::clamp(hist[bucket]);
[INFO] [stdout]     |                                 ^^^^^ multiple `clamp` found
[INFO] [stdout]     |
[INFO] [stdout]     = note: candidate #1 is defined in an impl of the trait `Ord` for the type `u8`
[INFO] [stdout] note: candidate #2 is defined in the trait `Clamp`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/imageproc-0.18.0/src/definitions.rs:68:5
[INFO] [stdout]     |
[INFO] [stdout] 68  |     fn clamp(x: T) -> Self;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 440 |             let intensity = Ord::clamp(hist[bucket]);
[INFO] [stdout]     |                             ~~~~~
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 440 |             let intensity = Clamp::clamp(hist[bucket]);
[INFO] [stdout]     |                             ~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/imageproc-0.18.0/src/hog.rs:444:33
[INFO] [stdout]     |
[INFO] [stdout] 444 |             let intensity = u8::clamp(hist[bucket]);
[INFO] [stdout]     |                                 ^^^^^ multiple `clamp` found
[INFO] [stdout]     |
[INFO] [stdout]     = note: candidate #1 is defined in an impl of the trait `Ord` for the type `u8`
[INFO] [stdout] note: candidate #2 is defined in the trait `Clamp`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/imageproc-0.18.0/src/definitions.rs:68:5
[INFO] [stdout]     |
[INFO] [stdout] 68  |     fn clamp(x: T) -> Self;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 444 |             let intensity = Ord::clamp(hist[bucket]);
[INFO] [stdout]     |                             ~~~~~
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 444 |             let intensity = Clamp::clamp(hist[bucket]);
[INFO] [stdout]     |                             ~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `imageproc` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "efb68bc7fa944239382d74287a24a0bdad3718d245b318aaa9c32eb70ae80130", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efb68bc7fa944239382d74287a24a0bdad3718d245b318aaa9c32eb70ae80130", kill_on_drop: false }`
[INFO] [stdout] efb68bc7fa944239382d74287a24a0bdad3718d245b318aaa9c32eb70ae80130