[INFO] fetching crate serde_derive 1.0.116...
[INFO] checking serde_derive-1.0.116 against master#a874956d940ecb3ed524b6176a171219ac4787ea for pr-76104
[INFO] extracting crate serde_derive 1.0.116 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate serde_derive 1.0.116 on toolchain a874956d940ecb3ed524b6176a171219ac4787ea
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_derive 1.0.116
[INFO] finished tweaking crates.io crate serde_derive 1.0.116
[INFO] tweaked toml for crates.io crate serde_derive 1.0.116 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1ce05d86f6686bb11b000686a60a12d265f99d404b030d20e4ede0f57815e77d
[INFO] running `Command { std: "docker" "start" "-a" "1ce05d86f6686bb11b000686a60a12d265f99d404b030d20e4ede0f57815e77d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ce05d86f6686bb11b000686a60a12d265f99d404b030d20e4ede0f57815e77d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ce05d86f6686bb11b000686a60a12d265f99d404b030d20e4ede0f57815e77d", kill_on_drop: false }`
[INFO] [stdout] 1ce05d86f6686bb11b000686a60a12d265f99d404b030d20e4ede0f57815e77d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 98195f4a9d011a53b0bf9b8c5a3f54f047b72d31404e7e7c6606a368215681a7
[INFO] running `Command { std: "docker" "start" "-a" "98195f4a9d011a53b0bf9b8c5a3f54f047b72d31404e7e7c6606a368215681a7", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.116 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking proc-macro2 v1.0.21
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking syn v1.0.41
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.98s
[INFO] running `Command { std: "docker" "inspect" "98195f4a9d011a53b0bf9b8c5a3f54f047b72d31404e7e7c6606a368215681a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98195f4a9d011a53b0bf9b8c5a3f54f047b72d31404e7e7c6606a368215681a7", kill_on_drop: false }`
[INFO] [stdout] 98195f4a9d011a53b0bf9b8c5a3f54f047b72d31404e7e7c6606a368215681a7