[INFO] cloning repository https://github.com/eyalron33/rust_p2p_experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eyalron33/rust_p2p_experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feyalron33%2Frust_p2p_experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feyalron33%2Frust_p2p_experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2631568f1bc4b0044d4d449925c2d1368fcb8323
[INFO] checking eyalron33/rust_p2p_experiments against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feyalron33%2Frust_p2p_experiments" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eyalron33/rust_p2p_experiments on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/eyalron33/rust_p2p_experiments
[INFO] finished tweaking git repo https://github.com/eyalron33/rust_p2p_experiments
[INFO] tweaked toml for git repo https://github.com/eyalron33/rust_p2p_experiments written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/eyalron33/rust_p2p_experiments already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/zetok/tox/`
[INFO] [stderr]     Updating git repository `https://github.com/carllerche/mio`
[INFO] [stderr]     Updating git repository `https://github.com/carllerche/nix-rust`
[INFO] [stderr]     Updating git repository `https://github.com/carllerche/slab`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pkg-config v0.3.8
[INFO] [stderr]   Downloaded bytes v0.3.0
[INFO] [stderr]   Downloaded libsodium-sys v0.0.12
[INFO] [stderr]   Downloaded serde v0.7.15
[INFO] [stderr]   Downloaded sodiumoxide v0.0.12
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 258d11f2ba9b1d56a558d8c99e11ac1dfc9abf3e9d16a6b5b78cd4ca2cd74b38
[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" "258d11f2ba9b1d56a558d8c99e11ac1dfc9abf3e9d16a6b5b78cd4ca2cd74b38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "258d11f2ba9b1d56a558d8c99e11ac1dfc9abf3e9d16a6b5b78cd4ca2cd74b38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "258d11f2ba9b1d56a558d8c99e11ac1dfc9abf3e9d16a6b5b78cd4ca2cd74b38", kill_on_drop: false }`
[INFO] [stdout] 258d11f2ba9b1d56a558d8c99e11ac1dfc9abf3e9d16a6b5b78cd4ca2cd74b38
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b85b345b8418512fcfa34280bc7cb103816c7dbaf646d23cb4e3d170e63746b6
[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" "b85b345b8418512fcfa34280bc7cb103816c7dbaf646d23cb4e3d170e63746b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking libc v0.2.19
[INFO] [stderr]    Compiling pkg-config v0.3.8
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking bitflags v0.3.3
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]     Checking slab v0.2.0 (https://github.com/carllerche/slab?rev=5476efcafb#5476efca)
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking nix v0.5.0-pre (https://github.com/carllerche/nix-rust?rev=c4257f8a76#c4257f8a)
[INFO] [stderr]    Compiling libsodium-sys v0.0.12
[INFO] [stderr]     Checking miow v0.1.5
[INFO] [stdout] error[E0591]: can't transmute zero-sized type
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/nix-rust-d606302ceff0dca5/c4257f8/src/sched.rs:190:20
[INFO] [stdout]     |
[INFO] [stdout] 190 |         ffi::clone(mem::transmute(callback), ptr as *mut c_void, flags, &mut cb)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: source type: for<'r> extern "C" fn(*mut Box<(dyn FnMut() -> isize + 'r)>) -> i32 {callback}
[INFO] [stdout]     = note: target type: *const for<'r> extern "C" fn(*const Box<(dyn FnMut() -> isize + 'r)>) -> i32
[INFO] [stdout]     = help: cast with `as` to a pointer 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 E0591`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nix`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b85b345b8418512fcfa34280bc7cb103816c7dbaf646d23cb4e3d170e63746b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b85b345b8418512fcfa34280bc7cb103816c7dbaf646d23cb4e3d170e63746b6", kill_on_drop: false }`
[INFO] [stdout] b85b345b8418512fcfa34280bc7cb103816c7dbaf646d23cb4e3d170e63746b6