[INFO] updating cached repository arcnmx/encage-runtime
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/arcnmx/encage-runtime
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/arcnmx/encage-runtime" "work/ex/beta-1.38-1/sources/1.37.0/gh/arcnmx/encage-runtime"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/arcnmx/encage-runtime'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/arcnmx/encage-runtime" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/arcnmx/encage-runtime"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/arcnmx/encage-runtime'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d983e6656d6d4de919f16352c36d6aca30d60f4e
[INFO] sha for GitHub repo arcnmx/encage-runtime: d983e6656d6d4de919f16352c36d6aca30d60f4e
[INFO] validating manifest of arcnmx/encage-runtime on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of arcnmx/encage-runtime on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing arcnmx/encage-runtime
[INFO] finished frobbing arcnmx/encage-runtime
[INFO] frobbed toml for arcnmx/encage-runtime written to work/ex/beta-1.38-1/sources/1.37.0/gh/arcnmx/encage-runtime/Cargo.toml
[INFO] started frobbing arcnmx/encage-runtime
[INFO] finished frobbing arcnmx/encage-runtime
[INFO] frobbed toml for arcnmx/encage-runtime written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/arcnmx/encage-runtime/Cargo.toml
[INFO] crate arcnmx/encage-runtime already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/arcnmx/encage-runtime/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/arcnmx/nix-rust`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/arcnmx/nix-rust`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing arcnmx/encage-runtime against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/arcnmx/encage-runtime:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 717917107c268868c0b5eb02851b1ad04fa8ece40b73f453b2046582568dc235
[INFO] running `"docker" "start" "-a" "717917107c268868c0b5eb02851b1ad04fa8ece40b73f453b2046582568dc235"`
[INFO] [stderr]    Compiling void v0.0.5
[INFO] [stderr]    Compiling nix v0.5.0-pre (https://github.com/arcnmx/nix-rust?branch=refactor#4719bed2)
[INFO] [stderr] error[E0591]: can't transmute zero-sized type
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/nix-rust-8d37db6708c485ac/4719bed/src/sched.rs:168:20
[INFO] [stderr]     |
[INFO] [stderr] 168 |         ffi::clone(mem::transmute(callback), ptr as *mut c_void, flags, &mut cb)
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: source type: for<'r> extern "C" fn(*mut std::boxed::Box<(dyn std::ops::FnMut() -> isize + 'r)>) -> i32 {sched::clone::callback}
[INFO] [stderr]     = note: target type: *const for<'r> extern "C" fn(*const std::boxed::Box<(dyn std::ops::FnMut() -> isize + 'r)>) -> i32
[INFO] [stderr]     = help: cast with `as` to a pointer instead
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0591`.
[INFO] [stderr] error: Could not compile `nix`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "717917107c268868c0b5eb02851b1ad04fa8ece40b73f453b2046582568dc235"`
[INFO] running `"docker" "rm" "-f" "717917107c268868c0b5eb02851b1ad04fa8ece40b73f453b2046582568dc235"`
[INFO] [stdout] 717917107c268868c0b5eb02851b1ad04fa8ece40b73f453b2046582568dc235