[INFO] fetching crate field_names 0.1.1...
[INFO] checking field_names-0.1.1 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate field_names 0.1.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate field_names 0.1.1 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate field_names 0.1.1
[INFO] finished tweaking crates.io crate field_names 0.1.1
[INFO] tweaked toml for crates.io crate field_names 0.1.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate field_names 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded darling_core v0.12.0
[INFO] [stderr]   Downloaded darling_macro v0.12.0
[INFO] [stderr]   Downloaded darling v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc6dd1ce460efcc50c4a3af1f970bcdde8cc39c99f9093e79aa66d3be4787d37
[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" "dc6dd1ce460efcc50c4a3af1f970bcdde8cc39c99f9093e79aa66d3be4787d37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc6dd1ce460efcc50c4a3af1f970bcdde8cc39c99f9093e79aa66d3be4787d37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc6dd1ce460efcc50c4a3af1f970bcdde8cc39c99f9093e79aa66d3be4787d37", kill_on_drop: false }`
[INFO] [stdout] dc6dd1ce460efcc50c4a3af1f970bcdde8cc39c99f9093e79aa66d3be4787d37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 457a5410779adb7fcae48665235f06174b5f338972f56cf99787bb81e82ee71c
[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" "457a5410779adb7fcae48665235f06174b5f338972f56cf99787bb81e82ee71c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]    Compiling darling_core v0.12.0
[INFO] [stderr]    Compiling darling_macro v0.12.0
[INFO] [stderr]     Checking darling v0.12.0
[INFO] [stderr]    Compiling field_names v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.23s
[INFO] running `Command { std: "docker" "inspect" "457a5410779adb7fcae48665235f06174b5f338972f56cf99787bb81e82ee71c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "457a5410779adb7fcae48665235f06174b5f338972f56cf99787bb81e82ee71c", kill_on_drop: false }`
[INFO] [stdout] 457a5410779adb7fcae48665235f06174b5f338972f56cf99787bb81e82ee71c