[INFO] cloning repository https://github.com/wezm/serde-duplicate-field
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wezm/serde-duplicate-field" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwezm%2Fserde-duplicate-field", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwezm%2Fserde-duplicate-field'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6cd23ec38321f71c5dcecceb7c52c1daf82da5c1
[INFO] checking wezm/serde-duplicate-field against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwezm%2Fserde-duplicate-field" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wezm/serde-duplicate-field on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wezm/serde-duplicate-field
[INFO] finished tweaking git repo https://github.com/wezm/serde-duplicate-field
[INFO] tweaked toml for git repo https://github.com/wezm/serde-duplicate-field written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/wezm/serde-duplicate-field already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itoa v0.4.1
[INFO] [stderr]   Downloaded num-traits v0.2.2
[INFO] [stderr]   Downloaded serde_derive_internals v0.22.2
[INFO] [stderr]   Downloaded proc-macro2 v0.2.3
[INFO] [stderr]   Downloaded serde v1.0.36
[INFO] [stderr]   Downloaded quote v0.4.2
[INFO] [stderr]   Downloaded syn v0.12.15
[INFO] [stderr]   Downloaded serde_derive v1.0.36
[INFO] [stderr]   Downloaded serde_json v1.0.13
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d3b83fc9d67805852af9bf37b2d0b05c4438224453af10eca01fd17c9516a2a
[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" "8d3b83fc9d67805852af9bf37b2d0b05c4438224453af10eca01fd17c9516a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d3b83fc9d67805852af9bf37b2d0b05c4438224453af10eca01fd17c9516a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d3b83fc9d67805852af9bf37b2d0b05c4438224453af10eca01fd17c9516a2a", kill_on_drop: false }`
[INFO] [stdout] 8d3b83fc9d67805852af9bf37b2d0b05c4438224453af10eca01fd17c9516a2a
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e65be66b2762a176a7cc7d3e815330730cab36c0969ccfff3c19dbfd881c329
[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" "1e65be66b2762a176a7cc7d3e815330730cab36c0969ccfff3c19dbfd881c329", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking serde v1.0.36
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling serde_derive_internals v0.22.2
[INFO] [stderr]     Checking serde_json v1.0.13
[INFO] [stderr]    Compiling serde_derive v1.0.36
[INFO] [stderr]     Checking serde-duplicate-field v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.34s
[INFO] running `Command { std: "docker" "inspect" "1e65be66b2762a176a7cc7d3e815330730cab36c0969ccfff3c19dbfd881c329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e65be66b2762a176a7cc7d3e815330730cab36c0969ccfff3c19dbfd881c329", kill_on_drop: false }`
[INFO] [stdout] 1e65be66b2762a176a7cc7d3e815330730cab36c0969ccfff3c19dbfd881c329