[INFO] fetching crate userfaultfd-sys 0.3.0...
[INFO] checking userfaultfd-sys-0.3.0 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate userfaultfd-sys 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate userfaultfd-sys 0.3.0 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate userfaultfd-sys 0.3.0
[INFO] finished tweaking crates.io crate userfaultfd-sys 0.3.0
[INFO] tweaked toml for crates.io crate userfaultfd-sys 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3649be8cb5bbf42417a8bdd6a8d3c9199d9451c3da26026ab3689716162b3e1e
[INFO] running `Command { std: "docker" "start" "-a" "3649be8cb5bbf42417a8bdd6a8d3c9199d9451c3da26026ab3689716162b3e1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3649be8cb5bbf42417a8bdd6a8d3c9199d9451c3da26026ab3689716162b3e1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3649be8cb5bbf42417a8bdd6a8d3c9199d9451c3da26026ab3689716162b3e1e", kill_on_drop: false }`
[INFO] [stdout] 3649be8cb5bbf42417a8bdd6a8d3c9199d9451c3da26026ab3689716162b3e1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a90cb1286f4b85498429e3158716d9ce7b903fd1f716c99ea1c33eaa05d9b22
[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" "6a90cb1286f4b85498429e3158716d9ce7b903fd1f716c99ea1c33eaa05d9b22", kill_on_drop: false }`
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling bindgen v0.57.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling clang-sys v1.0.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling userfaultfd-sys v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: attribute should be applied to a function or static
[INFO] [stdout]   --> src/linux4_11.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         #[no_mangle]
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 31 |         static _const_UFFD_API: u64;
[INFO] [stdout]    |         ---------------------------- not a 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 function or static
[INFO] [stdout]   --> src/linux4_11.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         #[no_mangle]
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 33 |         static _const_UFFD_API_FEATURES: u64;
[INFO] [stdout]    |         ------------------------------------- not a function or static
[INFO] [stdout]    |
[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 function or static
[INFO] [stdout]   --> src/linux4_11.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         #[no_mangle]
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 35 |         static _const_UFFD_API_IOCTLS: u64;
[INFO] [stdout]    |         ----------------------------------- not a function or static
[INFO] [stdout]    |
[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 function or static
[INFO] [stdout]   --> src/linux4_11.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         #[no_mangle]
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 37 |         static _const_UFFD_API_RANGE_IOCTLS: u64;
[INFO] [stdout]    |         ----------------------------------------- not a function or static
[INFO] [stdout]    |
[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 function or static
[INFO] [stdout]   --> src/linux4_11.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         #[no_mangle]
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 39 |         static _const_UFFDIO_REGISTER_MODE_MISSING: u64;
[INFO] [stdout]    |         ------------------------------------------------ not a function or static
[INFO] [stdout]    |
[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 function or static
[INFO] [stdout]   --> src/linux4_11.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         #[no_mangle]
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 41 |         static _const_UFFDIO_REGISTER_MODE_WP: u64;
[INFO] [stdout]    |         ------------------------------------------- not a function or static
[INFO] [stdout]    |
[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 function or static
[INFO] [stdout]   --> src/linux4_11.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         #[no_mangle]
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 43 |         static _const_UFFDIO_COPY_MODE_DONTWAKE: u64;
[INFO] [stdout]    |         --------------------------------------------- not a function or static
[INFO] [stdout]    |
[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 function or static
[INFO] [stdout]   --> src/linux4_11.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         #[no_mangle]
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 45 |         static _const_UFFDIO_ZEROPAGE_MODE_DONTWAKE: u64;
[INFO] [stdout]    |         ------------------------------------------------- not a function or static
[INFO] [stdout]    |
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.21s
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6a90cb1286f4b85498429e3158716d9ce7b903fd1f716c99ea1c33eaa05d9b22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a90cb1286f4b85498429e3158716d9ce7b903fd1f716c99ea1c33eaa05d9b22", kill_on_drop: false }`
[INFO] [stdout] 6a90cb1286f4b85498429e3158716d9ce7b903fd1f716c99ea1c33eaa05d9b22