[INFO] fetching crate serde_serializer_quick_unsupported 0.1.1...
[INFO] checking serde_serializer_quick_unsupported-0.1.1 against master#b0f3940c35d565399dccf8c79f38147b40f2724a for pr-103965
[INFO] extracting crate serde_serializer_quick_unsupported 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde_serializer_quick_unsupported 0.1.1 on toolchain b0f3940c35d565399dccf8c79f38147b40f2724a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0f3940c35d565399dccf8c79f38147b40f2724a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_serializer_quick_unsupported 0.1.1
[INFO] finished tweaking crates.io crate serde_serializer_quick_unsupported 0.1.1
[INFO] tweaked toml for crates.io crate serde_serializer_quick_unsupported 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0f3940c35d565399dccf8c79f38147b40f2724a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0f3940c35d565399dccf8c79f38147b40f2724a" "fetch" "--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" "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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+b0f3940c35d565399dccf8c79f38147b40f2724a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 167252b22bd84570fc4bce0c58e75021450bbf9b6bbe0286a93dc9dfbadf9924
[INFO] running `Command { std: "docker" "start" "-a" "167252b22bd84570fc4bce0c58e75021450bbf9b6bbe0286a93dc9dfbadf9924", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "167252b22bd84570fc4bce0c58e75021450bbf9b6bbe0286a93dc9dfbadf9924", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "167252b22bd84570fc4bce0c58e75021450bbf9b6bbe0286a93dc9dfbadf9924", kill_on_drop: false }`
[INFO] [stdout] 167252b22bd84570fc4bce0c58e75021450bbf9b6bbe0286a93dc9dfbadf9924
[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" "RUSTDOCFLAGS=--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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+b0f3940c35d565399dccf8c79f38147b40f2724a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b12958f0270ce72b577013ea041e4ea7d63b5bb476a5ed6aef094817be13f3a2
[INFO] running `Command { std: "docker" "start" "-a" "b12958f0270ce72b577013ea041e4ea7d63b5bb476a5ed6aef094817be13f3a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]     Checking serde_serializer_quick_unsupported v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `Command { std: "docker" "inspect" "b12958f0270ce72b577013ea041e4ea7d63b5bb476a5ed6aef094817be13f3a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b12958f0270ce72b577013ea041e4ea7d63b5bb476a5ed6aef094817be13f3a2", kill_on_drop: false }`
[INFO] [stdout] b12958f0270ce72b577013ea041e4ea7d63b5bb476a5ed6aef094817be13f3a2