[INFO] fetching crate ruby-sys 0.3.0...
[INFO] checking ruby-sys-0.3.0 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate ruby-sys 0.3.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ruby-sys 0.3.0 on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ruby-sys 0.3.0
[INFO] finished tweaking crates.io crate ruby-sys 0.3.0
[INFO] tweaked toml for crates.io crate ruby-sys 0.3.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bfd91ad64690450121bbe07e5781d318ab5cd92ec04173a472155c84c5a4c65
[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" "7bfd91ad64690450121bbe07e5781d318ab5cd92ec04173a472155c84c5a4c65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bfd91ad64690450121bbe07e5781d318ab5cd92ec04173a472155c84c5a4c65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bfd91ad64690450121bbe07e5781d318ab5cd92ec04173a472155c84c5a4c65", kill_on_drop: false }`
[INFO] [stdout] 7bfd91ad64690450121bbe07e5781d318ab5cd92ec04173a472155c84c5a4c65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1696d910eb14357d2bbd64f27954f0681e834ed3cdd61ce98f73041179f6a9f2
[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" "1696d910eb14357d2bbd64f27954f0681e834ed3cdd61ce98f73041179f6a9f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruby-sys v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: attribute should be applied to a foreign function or static
[INFO] [stdout]   --> src/value.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 |   #[link_name = "ruby_value_type"]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 47 |   #[repr(C)]
[INFO] [stdout] 48 | / pub enum ValueType {
[INFO] [stdout] 49 | |     None = 0x00,
[INFO] [stdout] 50 | |     Object = 0x01,
[INFO] [stdout] 51 | |     Class = 0x02,
[INFO] [stdout] ...  |
[INFO] [stdout] 74 | |     Mask = 0x1f,
[INFO] [stdout] 75 | | }
[INFO] [stdout]    | |_- not a foreign function or static
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a foreign function or static
[INFO] [stdout]   --> src/value.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 |   #[link_name = "ruby_value_type"]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 47 |   #[repr(C)]
[INFO] [stdout] 48 | / pub enum ValueType {
[INFO] [stdout] 49 | |     None = 0x00,
[INFO] [stdout] 50 | |     Object = 0x01,
[INFO] [stdout] 51 | |     Class = 0x02,
[INFO] [stdout] ...  |
[INFO] [stdout] 74 | |     Mask = 0x1f,
[INFO] [stdout] 75 | | }
[INFO] [stdout]    | |_- not a foreign function or static
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "1696d910eb14357d2bbd64f27954f0681e834ed3cdd61ce98f73041179f6a9f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1696d910eb14357d2bbd64f27954f0681e834ed3cdd61ce98f73041179f6a9f2", kill_on_drop: false }`
[INFO] [stdout] 1696d910eb14357d2bbd64f27954f0681e834ed3cdd61ce98f73041179f6a9f2