[INFO] fetching crate dprint-plugin-json 0.12.1...
[INFO] checking dprint-plugin-json-0.12.1 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate dprint-plugin-json 0.12.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate dprint-plugin-json 0.12.1 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dprint-plugin-json 0.12.1
[INFO] finished tweaking crates.io crate dprint-plugin-json 0.12.1
[INFO] tweaked toml for crates.io crate dprint-plugin-json 0.12.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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] 43d1c6206f9b51300243076f9ef3833c95bacb1a6ac7e841f68a13f61cb262de
[INFO] running `Command { std: "docker" "start" "-a" "43d1c6206f9b51300243076f9ef3833c95bacb1a6ac7e841f68a13f61cb262de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43d1c6206f9b51300243076f9ef3833c95bacb1a6ac7e841f68a13f61cb262de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43d1c6206f9b51300243076f9ef3833c95bacb1a6ac7e841f68a13f61cb262de", kill_on_drop: false }`
[INFO] [stdout] 43d1c6206f9b51300243076f9ef3833c95bacb1a6ac7e841f68a13f61cb262de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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] 099834912d1fc1ccf1b915c542bfebbe5567d8000e678990f617177a1177cbac
[INFO] running `Command { std: "docker" "start" "-a" "099834912d1fc1ccf1b915c542bfebbe5567d8000e678990f617177a1177cbac", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking bumpalo v3.7.0
[INFO] [stderr]     Checking jsonc-parser v0.17.0
[INFO] [stderr]     Checking similar v0.5.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking object v0.25.3
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking addr2line v0.15.2
[INFO] [stderr]     Checking dprint-development v0.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking which v2.0.1
[INFO] [stderr]     Checking debug-here v0.2.2
[INFO] [stderr]     Checking dprint-core v0.43.0
[INFO] [stderr]     Checking dprint-plugin-json v0.12.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.63s
[INFO] running `Command { std: "docker" "inspect" "099834912d1fc1ccf1b915c542bfebbe5567d8000e678990f617177a1177cbac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "099834912d1fc1ccf1b915c542bfebbe5567d8000e678990f617177a1177cbac", kill_on_drop: false }`
[INFO] [stdout] 099834912d1fc1ccf1b915c542bfebbe5567d8000e678990f617177a1177cbac