[INFO] cloning repository https://github.com/lunatic-lang/rust-lib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lunatic-lang/rust-lib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flunatic-lang%2Frust-lib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flunatic-lang%2Frust-lib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c36c46a27ff95bc35a9c0156cbebfabc5599c87
[INFO] checking lunatic-lang/rust-lib against master#2ad5292aea6328113b55968b4322528d48261316 for pr-80243
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flunatic-lang%2Frust-lib" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lunatic-lang/rust-lib on toolchain 2ad5292aea6328113b55968b4322528d48261316
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lunatic-lang/rust-lib
[INFO] finished tweaking git repo https://github.com/lunatic-lang/rust-lib
[INFO] tweaked toml for git repo https://github.com/lunatic-lang/rust-lib written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/lunatic-lang/rust-lib already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf89505eee223ce55fdbb7fad64b096523e2e1121b5d7ede0b02856ec9e81704
[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" "bf89505eee223ce55fdbb7fad64b096523e2e1121b5d7ede0b02856ec9e81704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf89505eee223ce55fdbb7fad64b096523e2e1121b5d7ede0b02856ec9e81704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf89505eee223ce55fdbb7fad64b096523e2e1121b5d7ede0b02856ec9e81704", kill_on_drop: false }`
[INFO] [stdout] bf89505eee223ce55fdbb7fad64b096523e2e1121b5d7ede0b02856ec9e81704
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85f9e004e71c06cbcdeb38b13d46314979c1d9c37be2dcdaf7eb5bebe88c774b
[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" "85f9e004e71c06cbcdeb38b13d46314979c1d9c37be2dcdaf7eb5bebe88c774b", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking lunatic v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` block uses type `[IoSlice]`, which is not FFI-safe
[INFO] [stdout]   --> src/channel.rs:14:49
[INFO] [stdout]    |
[INFO] [stdout] 14 |         pub fn channel_send(channel: i32, data: *const [IoSlice<'_>]);
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[IoSliceMut]`, which is not FFI-safe
[INFO] [stdout]   --> src/channel.rs:16:51
[INFO] [stdout]    |
[INFO] [stdout] 16 |         pub fn channel_receive(channel: i32, buf: *mut [IoSliceMut<'_>]) -> usize;
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[IoSlice]`, which is not FFI-safe
[INFO] [stdout]   --> src/channel.rs:14:49
[INFO] [stdout]    |
[INFO] [stdout] 14 |         pub fn channel_send(channel: i32, data: *const [IoSlice<'_>]);
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[IoSliceMut]`, which is not FFI-safe
[INFO] [stdout]   --> src/channel.rs:16:51
[INFO] [stdout]    |
[INFO] [stdout] 16 |         pub fn channel_receive(channel: i32, buf: *mut [IoSliceMut<'_>]) -> usize;
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.43s
[INFO] running `Command { std: "docker" "inspect" "85f9e004e71c06cbcdeb38b13d46314979c1d9c37be2dcdaf7eb5bebe88c774b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85f9e004e71c06cbcdeb38b13d46314979c1d9c37be2dcdaf7eb5bebe88c774b", kill_on_drop: false }`
[INFO] [stdout] 85f9e004e71c06cbcdeb38b13d46314979c1d9c37be2dcdaf7eb5bebe88c774b