[INFO] fetching crate serde-json-core 0.4.0...
[INFO] checking serde-json-core-0.4.0 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate serde-json-core 0.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde-json-core 0.4.0 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] removed /workspace/builds/worker-4/source/rust-toolchain
[INFO] started tweaking crates.io crate serde-json-core 0.4.0
[INFO] finished tweaking crates.io crate serde-json-core 0.4.0
[INFO] tweaked toml for crates.io crate serde-json-core 0.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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] 0067b312c50284176a718abdfa5f1c61d2410eaa950a419f2973b1683254d44d
[INFO] running `Command { std: "docker" "start" "-a" "0067b312c50284176a718abdfa5f1c61d2410eaa950a419f2973b1683254d44d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0067b312c50284176a718abdfa5f1c61d2410eaa950a419f2973b1683254d44d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0067b312c50284176a718abdfa5f1c61d2410eaa950a419f2973b1683254d44d", kill_on_drop: false }`
[INFO] [stdout] 0067b312c50284176a718abdfa5f1c61d2410eaa950a419f2973b1683254d44d
[INFO] running `Command { std: "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" "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] 9d95c1d359b4827c46d8f8852fe35b034e81952cf888b9733ffbeca31f4628ea
[INFO] running `Command { std: "docker" "start" "-a" "9d95c1d359b4827c46d8f8852fe35b034e81952cf888b9733ffbeca31f4628ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling heapless v0.7.3
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking serde-json-core v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.49s
[INFO] running `Command { std: "docker" "inspect" "9d95c1d359b4827c46d8f8852fe35b034e81952cf888b9733ffbeca31f4628ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d95c1d359b4827c46d8f8852fe35b034e81952cf888b9733ffbeca31f4628ea", kill_on_drop: false }`
[INFO] [stdout] 9d95c1d359b4827c46d8f8852fe35b034e81952cf888b9733ffbeca31f4628ea