[INFO] fetching crate serde_json 1.0.41...
[INFO] checking serde_json-1.0.41 against nightly-2019-10-27 for pr-65897
[INFO] extracting crate serde_json 1.0.41 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde_json 1.0.41 on toolchain nightly-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate serde_json 1.0.41
[INFO] finished tweaking crates.io crate serde_json 1.0.41
[INFO] tweaked toml for crates.io crate serde_json 1.0.41 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8cd2a4a79f26c6417a7ff8c7cc0d805def46be2561d38db0dc67ebfc84133900
[INFO] running `"docker" "start" "-a" "8cd2a4a79f26c6417a7ff8c7cc0d805def46be2561d38db0dc67ebfc84133900"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling psm v0.1.5
[INFO] [stderr]    Compiling stacker v0.1.6
[INFO] [stderr]    Compiling automod v0.1.2
[INFO] [stderr]     Checking serde_bytes v0.11.2
[INFO] [stderr]     Checking serde_json v1.0.41 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_stacker v0.1.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.94s
[INFO] running `"docker" "inspect" "8cd2a4a79f26c6417a7ff8c7cc0d805def46be2561d38db0dc67ebfc84133900"`
[INFO] running `"docker" "rm" "-f" "8cd2a4a79f26c6417a7ff8c7cc0d805def46be2561d38db0dc67ebfc84133900"`
[INFO] [stdout] 8cd2a4a79f26c6417a7ff8c7cc0d805def46be2561d38db0dc67ebfc84133900