[INFO] crate serde_json 1.0.51 is already in cache
[INFO] checking serde_json-1.0.51 against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] extracting crate serde_json 1.0.51 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde_json 1.0.51 on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate serde_json 1.0.51
[INFO] finished tweaking crates.io crate serde_json 1.0.51
[INFO] tweaked toml for crates.io crate serde_json 1.0.51 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "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=forbid" "-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" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "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] 6f6f9191fbb2f5a61e41232a409b0dec77470962e936e0058f9c616d10123207
[INFO] running `"docker" "start" "-a" "6f6f9191fbb2f5a61e41232a409b0dec77470962e936e0058f9c616d10123207"`
[INFO] [stderr]    Compiling automod v0.1.2
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_bytes v0.11.3
[INFO] [stderr]     Checking serde_stacker v0.1.1
[INFO] [stderr]     Checking serde_json v1.0.51 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking trybuild v1.0.25
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.44s
[INFO] running `"docker" "inspect" "6f6f9191fbb2f5a61e41232a409b0dec77470962e936e0058f9c616d10123207"`
[INFO] running `"docker" "rm" "-f" "6f6f9191fbb2f5a61e41232a409b0dec77470962e936e0058f9c616d10123207"`
[INFO] [stdout] 6f6f9191fbb2f5a61e41232a409b0dec77470962e936e0058f9c616d10123207