[INFO] fetching crate ffi-support 0.4.2...
[INFO] checking ffi-support-0.4.2 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate ffi-support 0.4.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ffi-support 0.4.2 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ffi-support 0.4.2
[INFO] finished tweaking crates.io crate ffi-support 0.4.2
[INFO] tweaked toml for crates.io crate ffi-support 0.4.2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 810bf6c606ac8cb66c8a3d4f1072c090671859250a75136037471617b9469fd7
[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" "810bf6c606ac8cb66c8a3d4f1072c090671859250a75136037471617b9469fd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "810bf6c606ac8cb66c8a3d4f1072c090671859250a75136037471617b9469fd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "810bf6c606ac8cb66c8a3d4f1072c090671859250a75136037471617b9469fd7", kill_on_drop: false }`
[INFO] [stdout] 810bf6c606ac8cb66c8a3d4f1072c090671859250a75136037471617b9469fd7
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38720bf05b93f5463aaa7198de5108c81c90f872ee5594f085c7be05abb5f044
[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" "38720bf05b93f5463aaa7198de5108c81c90f872ee5594f085c7be05abb5f044", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking ffi-support v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `!: into_ffi::IntoFfi` is not satisfied
[INFO] [stdout]     --> src/handle_map.rs:1207:17
[INFO] [stdout]      |
[INFO] [stdout] 1207 |             map.call_with_output(&mut e, h, |_thing| {
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^ the trait `into_ffi::IntoFfi` is not implemented for `!`
[INFO] [stdout]      |
[INFO] [stdout]      = note: the trait is implemented for `()`. Possibly this error has been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information). Consider whether you meant to use the type `()` here instead.
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ffi-support`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "38720bf05b93f5463aaa7198de5108c81c90f872ee5594f085c7be05abb5f044", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38720bf05b93f5463aaa7198de5108c81c90f872ee5594f085c7be05abb5f044", kill_on_drop: false }`
[INFO] [stdout] 38720bf05b93f5463aaa7198de5108c81c90f872ee5594f085c7be05abb5f044