[INFO] crate json_config 0.1.4 is already in cache
[INFO] checking json_config-0.1.4 against master#e1beee4992ad4b235fc700bf7af1ee86f894ea53 for pr-74130
[INFO] extracting crate json_config 0.1.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate json_config 0.1.4 on toolchain e1beee4992ad4b235fc700bf7af1ee86f894ea53
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json_config 0.1.4
[INFO] finished tweaking crates.io crate json_config 0.1.4
[INFO] tweaked toml for crates.io crate json_config 0.1.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "fetch" "--locked" "--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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a1fb209d6e6be6aae3ca5f549745a5385f3fe03ae0d5a10348614b44f3bbfef
[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" "3a1fb209d6e6be6aae3ca5f549745a5385f3fe03ae0d5a10348614b44f3bbfef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a1fb209d6e6be6aae3ca5f549745a5385f3fe03ae0d5a10348614b44f3bbfef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a1fb209d6e6be6aae3ca5f549745a5385f3fe03ae0d5a10348614b44f3bbfef", kill_on_drop: false }`
[INFO] [stdout] 3a1fb209d6e6be6aae3ca5f549745a5385f3fe03ae0d5a10348614b44f3bbfef
[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" "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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77024ff7b0fe0039b587b1f8f4a3b9d5b8a490aeca8d74b40f4680ae9d72e48f
[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" "77024ff7b0fe0039b587b1f8f4a3b9d5b8a490aeca8d74b40f4680ae9d72e48f", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking serde_json v1.0.56
[INFO] [stderr]     Checking json_config v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.92s
[INFO] running `Command { std: "docker" "inspect" "77024ff7b0fe0039b587b1f8f4a3b9d5b8a490aeca8d74b40f4680ae9d72e48f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77024ff7b0fe0039b587b1f8f4a3b9d5b8a490aeca8d74b40f4680ae9d72e48f", kill_on_drop: false }`
[INFO] [stdout] 77024ff7b0fe0039b587b1f8f4a3b9d5b8a490aeca8d74b40f4680ae9d72e48f