[INFO] fetching crate unsegen_jsonviewer 0.2.0...
[INFO] checking unsegen_jsonviewer-0.2.0 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate unsegen_jsonviewer 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate unsegen_jsonviewer 0.2.0 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unsegen_jsonviewer 0.2.0
[INFO] finished tweaking crates.io crate unsegen_jsonviewer 0.2.0
[INFO] tweaked toml for crates.io crate unsegen_jsonviewer 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--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-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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73639a9437075c78c317de3c21a94e4bbfda0cc45d84e3b0f310ade5c1df8df7
[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" "73639a9437075c78c317de3c21a94e4bbfda0cc45d84e3b0f310ade5c1df8df7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73639a9437075c78c317de3c21a94e4bbfda0cc45d84e3b0f310ade5c1df8df7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73639a9437075c78c317de3c21a94e4bbfda0cc45d84e3b0f310ade5c1df8df7", kill_on_drop: false }`
[INFO] [stdout] 73639a9437075c78c317de3c21a94e4bbfda0cc45d84e3b0f310ade5c1df8df7
[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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2206cc4f8b977d18a86e3fc80e14a554e231cd80a55a9222e970e07649292a4
[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" "c2206cc4f8b977d18a86e3fc80e14a554e231cd80a55a9222e970e07649292a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling ndarray v0.8.4
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking smallvec v0.3.4
[INFO] [stderr]     Checking json v0.11.15
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]     Checking raw_tty v0.1.0
[INFO] [stderr]     Checking unsegen v0.2.5
[INFO] [stderr]     Checking unsegen_jsonviewer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.13s
[INFO] running `Command { std: "docker" "inspect" "c2206cc4f8b977d18a86e3fc80e14a554e231cd80a55a9222e970e07649292a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2206cc4f8b977d18a86e3fc80e14a554e231cd80a55a9222e970e07649292a4", kill_on_drop: false }`
[INFO] [stdout] c2206cc4f8b977d18a86e3fc80e14a554e231cd80a55a9222e970e07649292a4