[INFO] fetching crate serde-diff 0.3.1...
[INFO] checking serde-diff-0.3.1 against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] extracting crate serde-diff 0.3.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate serde-diff 0.3.1 on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-diff 0.3.1
[INFO] finished tweaking crates.io crate serde-diff 0.3.1
[INFO] tweaked toml for crates.io crate serde-diff 0.3.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate serde-diff 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde-diff-derive v0.3.1
[INFO] [stderr]   Downloaded rmp-serde v0.14.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "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] 3edbd9249d3e2a92e9f5fe907a3773f1f1a7f453cbd0c63649165bcad356e784
[INFO] running `Command { std: "docker" "start" "-a" "3edbd9249d3e2a92e9f5fe907a3773f1f1a7f453cbd0c63649165bcad356e784", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3edbd9249d3e2a92e9f5fe907a3773f1f1a7f453cbd0c63649165bcad356e784", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3edbd9249d3e2a92e9f5fe907a3773f1f1a7f453cbd0c63649165bcad356e784", kill_on_drop: false }`
[INFO] [stdout] 3edbd9249d3e2a92e9f5fe907a3773f1f1a7f453cbd0c63649165bcad356e784
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 614919032bcac1cf155b1db21e50b422505a98e8f2367d7a2e25948f0ae28cb4
[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" "614919032bcac1cf155b1db21e50b422505a98e8f2367d7a2e25948f0ae28cb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking rmp v0.8.9
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling serde-diff-derive v0.3.1
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking rmp-serde v0.14.3
[INFO] [stderr]     Checking serde-diff v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.09s
[INFO] running `Command { std: "docker" "inspect" "614919032bcac1cf155b1db21e50b422505a98e8f2367d7a2e25948f0ae28cb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "614919032bcac1cf155b1db21e50b422505a98e8f2367d7a2e25948f0ae28cb4", kill_on_drop: false }`
[INFO] [stdout] 614919032bcac1cf155b1db21e50b422505a98e8f2367d7a2e25948f0ae28cb4