[INFO] fetching crate arc-writer 0.2.1-alpha.1...
[INFO] checking arc-writer-0.2.1-alpha.1 against master#040e2f8b9ff2d76fbe2146d6003e297ed4532088 for pr-143619
[INFO] extracting crate arc-writer 0.2.1-alpha.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate arc-writer 0.2.1-alpha.1
[INFO] finished tweaking crates.io crate arc-writer 0.2.1-alpha.1
[INFO] tweaked toml for crates.io crate arc-writer 0.2.1-alpha.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate arc-writer 0.2.1-alpha.1 on toolchain 040e2f8b9ff2d76fbe2146d6003e297ed4532088
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0eb89f8a43c89f677518b4ae372c2b57906bdeda73a2a659bd2bff814b74f03
[INFO] running `Command { std: "docker" "start" "-a" "c0eb89f8a43c89f677518b4ae372c2b57906bdeda73a2a659bd2bff814b74f03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0eb89f8a43c89f677518b4ae372c2b57906bdeda73a2a659bd2bff814b74f03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0eb89f8a43c89f677518b4ae372c2b57906bdeda73a2a659bd2bff814b74f03", kill_on_drop: false }`
[INFO] [stdout] c0eb89f8a43c89f677518b4ae372c2b57906bdeda73a2a659bd2bff814b74f03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d809b8ccec3e61d15279be36d623fdd24c3bb42d8450c626c2f7b48c74dff051
[INFO] running `Command { std: "docker" "start" "-a" "d809b8ccec3e61d15279be36d623fdd24c3bb42d8450c626c2f7b48c74dff051", kill_on_drop: false }`
[INFO] [stderr]     Checking arc-writer v0.2.1-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "d809b8ccec3e61d15279be36d623fdd24c3bb42d8450c626c2f7b48c74dff051", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d809b8ccec3e61d15279be36d623fdd24c3bb42d8450c626c2f7b48c74dff051", kill_on_drop: false }`
[INFO] [stdout] d809b8ccec3e61d15279be36d623fdd24c3bb42d8450c626c2f7b48c74dff051