[INFO] fetching crate serde_as 0.0.1...
[INFO] checking serde_as-0.0.1 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate serde_as 0.0.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate serde_as 0.0.1 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_as 0.0.1
[INFO] finished tweaking crates.io crate serde_as 0.0.1
[INFO] tweaked toml for crates.io crate serde_as 0.0.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate serde_as 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8f53d556f1bc820edcd3a94dcb4e4d27031282bc095d3c4045cddafd1b56669
[INFO] running `Command { std: "docker" "start" "-a" "f8f53d556f1bc820edcd3a94dcb4e4d27031282bc095d3c4045cddafd1b56669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8f53d556f1bc820edcd3a94dcb4e4d27031282bc095d3c4045cddafd1b56669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8f53d556f1bc820edcd3a94dcb4e4d27031282bc095d3c4045cddafd1b56669", kill_on_drop: false }`
[INFO] [stdout] f8f53d556f1bc820edcd3a94dcb4e4d27031282bc095d3c4045cddafd1b56669
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff2aa369a71ad6c7256b2bcf36006b0a078481da2e3ee2f97ba9982ae591a083
[INFO] running `Command { std: "docker" "start" "-a" "ff2aa369a71ad6c7256b2bcf36006b0a078481da2e3ee2f97ba9982ae591a083", kill_on_drop: false }`
[INFO] [stderr]     Checking serde_as v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "ff2aa369a71ad6c7256b2bcf36006b0a078481da2e3ee2f97ba9982ae591a083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff2aa369a71ad6c7256b2bcf36006b0a078481da2e3ee2f97ba9982ae591a083", kill_on_drop: false }`
[INFO] [stdout] ff2aa369a71ad6c7256b2bcf36006b0a078481da2e3ee2f97ba9982ae591a083