[INFO] fetching crate serde-json-core 0.2.0...
[INFO] checking serde-json-core-0.2.0 against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] extracting crate serde-json-core 0.2.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate serde-json-core 0.2.0 on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-json-core 0.2.0
[INFO] finished tweaking crates.io crate serde-json-core 0.2.0
[INFO] tweaked toml for crates.io crate serde-json-core 0.2.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3fe385142ad7895c74de9a99b12aa21cf4c8dd85369824f984e9dcd0ba846318
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3fe385142ad7895c74de9a99b12aa21cf4c8dd85369824f984e9dcd0ba846318", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fe385142ad7895c74de9a99b12aa21cf4c8dd85369824f984e9dcd0ba846318", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fe385142ad7895c74de9a99b12aa21cf4c8dd85369824f984e9dcd0ba846318", kill_on_drop: false }`
[INFO] [stdout] 3fe385142ad7895c74de9a99b12aa21cf4c8dd85369824f984e9dcd0ba846318
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "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] f38dfbb19c40db121adabd7ed1f76fe0f01baf1bcf98ef39ff7450b357692cd7
[INFO] running `Command { std: "docker" "start" "-a" "f38dfbb19c40db121adabd7ed1f76fe0f01baf1bcf98ef39ff7450b357692cd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]     Checking heapless v0.5.6
[INFO] [stderr]     Checking serde-json-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.41s
[INFO] running `Command { std: "docker" "inspect" "f38dfbb19c40db121adabd7ed1f76fe0f01baf1bcf98ef39ff7450b357692cd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f38dfbb19c40db121adabd7ed1f76fe0f01baf1bcf98ef39ff7450b357692cd7", kill_on_drop: false }`
[INFO] [stdout] f38dfbb19c40db121adabd7ed1f76fe0f01baf1bcf98ef39ff7450b357692cd7