[INFO] fetching crate palette 0.7.6...
[INFO] checking palette-0.7.6 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate palette 0.7.6 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate palette 0.7.6 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate palette 0.7.6
[INFO] finished tweaking crates.io crate palette 0.7.6
[INFO] tweaked toml for crates.io crate palette 0.7.6 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate palette 0.7.6 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded topology-traits v0.1.2
[INFO] [stderr]   Downloaded enterpolation v0.2.1
[INFO] [stderr]   Downloaded rand_mt v4.2.2
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f7c982eb7963d3a4ee22b0f295085bf8ea826c0c97d4f4b69c27d0b55e86fe8
[INFO] running `Command { std: "docker" "start" "-a" "4f7c982eb7963d3a4ee22b0f295085bf8ea826c0c97d4f4b69c27d0b55e86fe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f7c982eb7963d3a4ee22b0f295085bf8ea826c0c97d4f4b69c27d0b55e86fe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f7c982eb7963d3a4ee22b0f295085bf8ea826c0c97d4f4b69c27d0b55e86fe8", kill_on_drop: false }`
[INFO] [stdout] 4f7c982eb7963d3a4ee22b0f295085bf8ea826c0c97d4f4b69c27d0b55e86fe8
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e7dc98e7e7b5100cb8d1c1e36ae98157aa45fa9c4f19363c3901a71c5d2cfa5
[INFO] running `Command { std: "docker" "start" "-a" "2e7dc98e7e7b5100cb8d1c1e36ae98157aa45fa9c4f19363c3901a71c5d2cfa5", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling serde v1.0.199
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling by_address v1.2.1
[INFO] [stderr]    Compiling palette v0.7.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking fast-srgb8 v1.0.0
[INFO] [stderr]     Checking bytemuck v1.15.0
[INFO] [stderr]     Checking assert_float_eq v1.1.3
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]    Compiling syn v2.0.60
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]     Checking rand_mt v4.2.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking topology-traits v0.1.2
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking enterpolation v0.2.1
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling serde_derive v1.0.199
[INFO] [stderr]    Compiling phf_macros v0.11.2
[INFO] [stderr]    Compiling palette_derive v0.7.6
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]     Checking serde_json v1.0.116
[INFO] [stderr]     Checking ron v0.8.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.80s
[INFO] running `Command { std: "docker" "inspect" "2e7dc98e7e7b5100cb8d1c1e36ae98157aa45fa9c4f19363c3901a71c5d2cfa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e7dc98e7e7b5100cb8d1c1e36ae98157aa45fa9c4f19363c3901a71c5d2cfa5", kill_on_drop: false }`
[INFO] [stdout] 2e7dc98e7e7b5100cb8d1c1e36ae98157aa45fa9c4f19363c3901a71c5d2cfa5