[INFO] updating cached repository daveallie/rust_watcher
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/daveallie/rust_watcher
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/daveallie/rust_watcher" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/daveallie/rust_watcher"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/daveallie/rust_watcher'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/daveallie/rust_watcher" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/daveallie/rust_watcher"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/daveallie/rust_watcher'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 586fa61a590b8dfbb97fa1261a3fc4272bb62106
[INFO] sha for GitHub repo daveallie/rust_watcher: 586fa61a590b8dfbb97fa1261a3fc4272bb62106
[INFO] validating manifest of daveallie/rust_watcher on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of daveallie/rust_watcher on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing daveallie/rust_watcher
[INFO] finished frobbing daveallie/rust_watcher
[INFO] frobbed toml for daveallie/rust_watcher written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/daveallie/rust_watcher/Cargo.toml
[INFO] started frobbing daveallie/rust_watcher
[INFO] finished frobbing daveallie/rust_watcher
[INFO] frobbed toml for daveallie/rust_watcher written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/daveallie/rust_watcher/Cargo.toml
[INFO] crate daveallie/rust_watcher already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/daveallie/rust_watcher/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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "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" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking daveallie/rust_watcher against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-4/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/daveallie/rust_watcher:/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=forbid" "-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" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6e7c450834dfc8ead6739f402f508da8a8f9f7e48eba4053880e19649325557f
[INFO] running `"docker" "start" "-a" "6e7c450834dfc8ead6739f402f508da8a8f9f7e48eba4053880e19649325557f"`
[INFO] [stderr]    Compiling ruby-sys v0.2.20
[INFO] [stderr]     Checking ruru v0.8.1
[INFO] [stderr] error[E0133]: use of extern static is unsafe and requires unsafe function or block
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/ruru-0.8.1/src/class/class.rs:136:53
[INFO] [stderr]     |
[INFO] [stderr] 136 |         Self::from(binding_util::get_constant(name, rb_cObject))
[INFO] [stderr]     |                                                     ^^^^^^^^^^ use of extern static
[INFO] [stderr]     |
[INFO] [stderr]     = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
[INFO] [stderr] 
[INFO] [stderr] error[E0133]: use of extern static is unsafe and requires unsafe function or block
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/ruru-0.8.1/src/class/class.rs:391:21
[INFO] [stderr]     |
[INFO] [stderr] 391 |             None => rb_cObject,
[INFO] [stderr]     |                     ^^^^^^^^^^ use of extern static
[INFO] [stderr]     |
[INFO] [stderr]     = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0133`.
[INFO] [stderr] error: Could not compile `ruru`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6e7c450834dfc8ead6739f402f508da8a8f9f7e48eba4053880e19649325557f"`
[INFO] running `"docker" "rm" "-f" "6e7c450834dfc8ead6739f402f508da8a8f9f7e48eba4053880e19649325557f"`
[INFO] [stdout] 6e7c450834dfc8ead6739f402f508da8a8f9f7e48eba4053880e19649325557f