[INFO] fetching crate args-to-json 1.0.0...
[INFO] checking args-to-json-1.0.0 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate args-to-json 1.0.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate args-to-json 1.0.0 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate args-to-json 1.0.0
[INFO] finished tweaking crates.io crate args-to-json 1.0.0
[INFO] tweaked toml for crates.io crate args-to-json 1.0.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate args-to-json 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d678d2ed4b36237ae275772113a9443151642c7ac07d247a5250bb0cbbfaba2
[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" "2d678d2ed4b36237ae275772113a9443151642c7ac07d247a5250bb0cbbfaba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d678d2ed4b36237ae275772113a9443151642c7ac07d247a5250bb0cbbfaba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d678d2ed4b36237ae275772113a9443151642c7ac07d247a5250bb0cbbfaba2", kill_on_drop: false }`
[INFO] [stdout] 2d678d2ed4b36237ae275772113a9443151642c7ac07d247a5250bb0cbbfaba2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6dcc569e2953b32182f001c4bea2bf44097fa189a9c8eafd66bd93b1a169794e
[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" "6dcc569e2953b32182f001c4bea2bf44097fa189a9c8eafd66bd93b1a169794e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking args-to-json v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.48s
[INFO] running `Command { std: "docker" "inspect" "6dcc569e2953b32182f001c4bea2bf44097fa189a9c8eafd66bd93b1a169794e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dcc569e2953b32182f001c4bea2bf44097fa189a9c8eafd66bd93b1a169794e", kill_on_drop: false }`
[INFO] [stdout] 6dcc569e2953b32182f001c4bea2bf44097fa189a9c8eafd66bd93b1a169794e