[INFO] fetching crate palette_extract 0.1.0...
[INFO] checking palette_extract-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate palette_extract 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate palette_extract 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate palette_extract 0.1.0
[INFO] finished tweaking crates.io crate palette_extract 0.1.0
[INFO] tweaked toml for crates.io crate palette_extract 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate palette_extract 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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 lebe v0.5.1
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.79
[INFO] [stderr]   Downloaded nanorand v0.6.1
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.79
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.79
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.7
[INFO] [stderr]   Downloaded bytemuck v1.8.0
[INFO] [stderr]   Downloaded bumpalo v3.9.1
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.79
[INFO] [stderr]   Downloaded exr v1.4.1
[INFO] [stderr]   Downloaded jpeg-decoder v0.2.2
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.2
[INFO] [stderr]   Downloaded png v0.17.5
[INFO] [stderr]   Downloaded image v0.24.1
[INFO] [stderr]   Downloaded tiff v0.7.1
[INFO] [stderr]   Downloaded js-sys v0.3.56
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.79
[INFO] [stderr]   Downloaded spin v0.9.2
[INFO] [stderr]   Downloaded flume v0.10.11
[INFO] [stderr]   Downloaded deflate v1.0.0
[INFO] [stderr]   Downloaded miniz_oxide v0.5.1
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.7
[INFO] [stderr]   Downloaded num-rational v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1650d75601cf091f1186cd81a81568cd5138883059e7d594d7938f46e22930a9
[INFO] running `Command { std: "docker" "start" "-a" "1650d75601cf091f1186cd81a81568cd5138883059e7d594d7938f46e22930a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1650d75601cf091f1186cd81a81568cd5138883059e7d594d7938f46e22930a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1650d75601cf091f1186cd81a81568cd5138883059e7d594d7938f46e22930a9", kill_on_drop: false }`
[INFO] [stdout] 1650d75601cf091f1186cd81a81568cd5138883059e7d594d7938f46e22930a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab72e32f677bb244f227c67a7cc1ad67db9edd495b7322a777dbbe0e5316b339
[INFO] running `Command { std: "docker" "start" "-a" "ab72e32f677bb244f227c67a7cc1ad67db9edd495b7322a777dbbe0e5316b339", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking bytemuck v1.8.0
[INFO] [stderr]     Checking palette_extract v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking nanorand v0.6.1
[INFO] [stderr]     Checking tiff v0.7.1
[INFO] [stderr]     Checking jpeg-decoder v0.2.2
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.11
[INFO] [stderr]     Checking exr v1.4.1
[INFO] [stderr]     Checking image v0.24.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.18s
[INFO] running `Command { std: "docker" "inspect" "ab72e32f677bb244f227c67a7cc1ad67db9edd495b7322a777dbbe0e5316b339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab72e32f677bb244f227c67a7cc1ad67db9edd495b7322a777dbbe0e5316b339", kill_on_drop: false }`
[INFO] [stdout] ab72e32f677bb244f227c67a7cc1ad67db9edd495b7322a777dbbe0e5316b339
[INFO] checking palette_extract-0.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate palette_extract 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate palette_extract 0.1.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate palette_extract 0.1.0
[INFO] finished tweaking crates.io crate palette_extract 0.1.0
[INFO] tweaked toml for crates.io crate palette_extract 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate palette_extract 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d7a16098ea40574454e766b6989ba552115d44a1d1a45511368a0fbbcbf512d
[INFO] running `Command { std: "docker" "start" "-a" "5d7a16098ea40574454e766b6989ba552115d44a1d1a45511368a0fbbcbf512d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d7a16098ea40574454e766b6989ba552115d44a1d1a45511368a0fbbcbf512d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d7a16098ea40574454e766b6989ba552115d44a1d1a45511368a0fbbcbf512d", kill_on_drop: false }`
[INFO] [stdout] 5d7a16098ea40574454e766b6989ba552115d44a1d1a45511368a0fbbcbf512d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf5c4d9fb401a9ec9dfee2657a867597b9e47c54ef7981d8bd6b02e1d03a5adb
[INFO] running `Command { std: "docker" "start" "-a" "cf5c4d9fb401a9ec9dfee2657a867597b9e47c54ef7981d8bd6b02e1d03a5adb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking bytemuck v1.8.0
[INFO] [stderr]     Checking palette_extract v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking nanorand v0.6.1
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking tiff v0.7.1
[INFO] [stderr]     Checking jpeg-decoder v0.2.2
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.11
[INFO] [stderr]     Checking exr v1.4.1
[INFO] [stderr]     Checking image v0.24.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.57s
[INFO] running `Command { std: "docker" "inspect" "cf5c4d9fb401a9ec9dfee2657a867597b9e47c54ef7981d8bd6b02e1d03a5adb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf5c4d9fb401a9ec9dfee2657a867597b9e47c54ef7981d8bd6b02e1d03a5adb", kill_on_drop: false }`
[INFO] [stdout] cf5c4d9fb401a9ec9dfee2657a867597b9e47c54ef7981d8bd6b02e1d03a5adb