[INFO] updating cached repository Freaky/unprivileged
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Freaky/unprivileged
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Freaky/unprivileged" "work/ex/beta-1.38-1/sources/1.37.0/gh/Freaky/unprivileged"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Freaky/unprivileged'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Freaky/unprivileged" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Freaky/unprivileged"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Freaky/unprivileged'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 84e32115fc1cd8279d5268454c347e2427be350c
[INFO] sha for GitHub repo Freaky/unprivileged: 84e32115fc1cd8279d5268454c347e2427be350c
[INFO] validating manifest of Freaky/unprivileged 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 Freaky/unprivileged 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 Freaky/unprivileged
[INFO] finished frobbing Freaky/unprivileged
[INFO] frobbed toml for Freaky/unprivileged written to work/ex/beta-1.38-1/sources/1.37.0/gh/Freaky/unprivileged/Cargo.toml
[INFO] started frobbing Freaky/unprivileged
[INFO] finished frobbing Freaky/unprivileged
[INFO] frobbed toml for Freaky/unprivileged written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Freaky/unprivileged/Cargo.toml
[INFO] crate Freaky/unprivileged 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Freaky/unprivileged against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Freaky/unprivileged:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] bfe289cd53717a8b576040c4816288d71fc056d6c411165e08f433f8dd95bab9
[INFO] running `"docker" "start" "-a" "bfe289cd53717a8b576040c4816288d71fc056d6c411165e08f433f8dd95bab9"`
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling derive_builder v0.7.2
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling errno v0.2.4
[INFO] [stderr]    Compiling darling_core v0.9.0
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]    Compiling darling v0.9.0
[INFO] [stderr]    Compiling derive_builder_core v0.5.0
[INFO] [stderr]    Compiling unprivileged v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/platform/unix/user.rs:127:37
[INFO] [stderr]     |
[INFO] [stderr] 127 |         if unsafe { libc::setgroups(ids.gids.len() as i32, ids.gids.as_ptr()) != 0 } {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^ expected usize, found i32
[INFO] [stderr] help: you can convert an `i32` to `usize` and panic if the converted value wouldn't fit
[INFO] [stderr]     |
[INFO] [stderr] 127 |         if unsafe { libc::setgroups((ids.gids.len() as i32).try_into().unwrap(), ids.gids.as_ptr()) != 0 } {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `unprivileged`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "bfe289cd53717a8b576040c4816288d71fc056d6c411165e08f433f8dd95bab9"`
[INFO] running `"docker" "rm" "-f" "bfe289cd53717a8b576040c4816288d71fc056d6c411165e08f433f8dd95bab9"`
[INFO] [stdout] bfe289cd53717a8b576040c4816288d71fc056d6c411165e08f433f8dd95bab9