[INFO] fetching crate k-cache 0.1.1...
[INFO] checking k-cache-0.1.1 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate k-cache 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate k-cache 0.1.1 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate k-cache 0.1.1
[INFO] finished tweaking crates.io crate k-cache 0.1.1
[INFO] tweaked toml for crates.io crate k-cache 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding windows-sys v0.42.0 (latest: v0.59.0)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.42.2 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.42.2 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_i686_gnu v0.42.2 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_i686_msvc v0.42.2 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.42.2 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.42.2 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.42.2 (latest: v0.52.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic-wait v1.1.0
[INFO] [stderr]   Downloaded readme-rustdocifier v0.1.1
[INFO] [stderr]   Downloaded k-lock v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c39ee531a027a9e7bef24cc9e11d57d21a06a385d811f20b8f98cf72e41b3576
[INFO] running `Command { std: "docker" "start" "-a" "c39ee531a027a9e7bef24cc9e11d57d21a06a385d811f20b8f98cf72e41b3576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c39ee531a027a9e7bef24cc9e11d57d21a06a385d811f20b8f98cf72e41b3576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c39ee531a027a9e7bef24cc9e11d57d21a06a385d811f20b8f98cf72e41b3576", kill_on_drop: false }`
[INFO] [stdout] c39ee531a027a9e7bef24cc9e11d57d21a06a385d811f20b8f98cf72e41b3576
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd5bf5e7bb22f5bf51a529cf78365a888a2578a7fc19a908416bf4fb8c814a92
[INFO] running `Command { std: "docker" "start" "-a" "dd5bf5e7bb22f5bf51a529cf78365a888a2578a7fc19a908416bf4fb8c814a92", kill_on_drop: false }`
[INFO] [stderr]    Compiling readme-rustdocifier v0.1.1
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling k-lock v0.2.5
[INFO] [stderr]     Checking atomic-wait v1.1.0
[INFO] [stderr]     Checking k-cache v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "dd5bf5e7bb22f5bf51a529cf78365a888a2578a7fc19a908416bf4fb8c814a92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd5bf5e7bb22f5bf51a529cf78365a888a2578a7fc19a908416bf4fb8c814a92", kill_on_drop: false }`
[INFO] [stdout] dd5bf5e7bb22f5bf51a529cf78365a888a2578a7fc19a908416bf4fb8c814a92