[INFO] fetching crate checkerboard 0.1.0...
[INFO] testing checkerboard-0.1.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate checkerboard 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate checkerboard 0.1.0 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5426f1f07639335d0352c1a272c9c7f8e3735271029602ffd5df0f51330df689
[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" "5426f1f07639335d0352c1a272c9c7f8e3735271029602ffd5df0f51330df689", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5426f1f07639335d0352c1a272c9c7f8e3735271029602ffd5df0f51330df689", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5426f1f07639335d0352c1a272c9c7f8e3735271029602ffd5df0f51330df689", kill_on_drop: false }`
[INFO] [stdout] 5426f1f07639335d0352c1a272c9c7f8e3735271029602ffd5df0f51330df689
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5e40cabe1e213c534367320bbfe3c1211f948b7410658ab0bb6220391f596c33
[INFO] running `Command { std: "docker" "start" "-a" "5e40cabe1e213c534367320bbfe3c1211f948b7410658ab0bb6220391f596c33", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling if_rust_version v1.0.0
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling deflate v0.7.20
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling matrixmultiply v0.2.4
[INFO] [stderr]    Compiling conv v0.3.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling crc32fast v1.3.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling png v0.15.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling num_cpus v1.13.0
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[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling once_cell v0.2.4
[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling rusttype v0.8.3
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling alga v0.9.3
[INFO] [stderr]    Compiling rusttype v0.7.9
[INFO] [stderr]    Compiling tiff v0.2.2
[INFO] [stderr]    Compiling tiff v0.3.1
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling nalgebra v0.18.1
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling cpp_common v0.5.6
[INFO] [stderr]    Compiling cpp_build v0.5.6
[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 = <u8 as Ord>::clamp(hist[bucket]);
[INFO] [stdout]     |                             ~~~~~~~~~~~~~
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 440 |             let intensity = <u8 as 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 = <u8 as Ord>::clamp(hist[bucket]);
[INFO] [stdout]     |                             ~~~~~~~~~~~~~
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 444 |             let intensity = <u8 as 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" "5e40cabe1e213c534367320bbfe3c1211f948b7410658ab0bb6220391f596c33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e40cabe1e213c534367320bbfe3c1211f948b7410658ab0bb6220391f596c33", kill_on_drop: false }`
[INFO] [stdout] 5e40cabe1e213c534367320bbfe3c1211f948b7410658ab0bb6220391f596c33