[INFO] fetching crate cffi-impl 0.1.6...
[INFO] checking cffi-impl-0.1.6 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate cffi-impl 0.1.6 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate cffi-impl 0.1.6 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cffi-impl 0.1.6
[INFO] finished tweaking crates.io crate cffi-impl 0.1.6
[INFO] tweaked toml for crates.io crate cffi-impl 0.1.6 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20b86149c7a9e370151d1a340a1e64a8a14900372e6d61e7ff6060cef3c95f52
[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" "20b86149c7a9e370151d1a340a1e64a8a14900372e6d61e7ff6060cef3c95f52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20b86149c7a9e370151d1a340a1e64a8a14900372e6d61e7ff6060cef3c95f52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20b86149c7a9e370151d1a340a1e64a8a14900372e6d61e7ff6060cef3c95f52", kill_on_drop: false }`
[INFO] [stdout] 20b86149c7a9e370151d1a340a1e64a8a14900372e6d61e7ff6060cef3c95f52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec4a1ef1d2a81562b93ec340603f69f75d3612661f6f467b55ccd7ccf8adcc64
[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" "ec4a1ef1d2a81562b93ec340603f69f75d3612661f6f467b55ccd7ccf8adcc64", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]     Checking strsim v0.9.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking heck v0.3.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking phf_shared v0.7.24
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking darling_core v0.10.2
[INFO] [stderr]    Compiling cffi-impl v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking darling v0.10.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.04s
[INFO] running `Command { std: "docker" "inspect" "ec4a1ef1d2a81562b93ec340603f69f75d3612661f6f467b55ccd7ccf8adcc64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec4a1ef1d2a81562b93ec340603f69f75d3612661f6f467b55ccd7ccf8adcc64", kill_on_drop: false }`
[INFO] [stdout] ec4a1ef1d2a81562b93ec340603f69f75d3612661f6f467b55ccd7ccf8adcc64