[INFO] updating cached repository Rua/ferret
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Rua/ferret
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Rua/ferret" "work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/Rua/ferret"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/Rua/ferret'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Rua/ferret" "work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/Rua/ferret"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/Rua/ferret'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7547bf6771bbed130331b83d80ff859e965eb712
[INFO] sha for GitHub repo Rua/ferret: 7547bf6771bbed130331b83d80ff859e965eb712
[INFO] validating manifest of Rua/ferret on toolchain master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Rua/ferret on toolchain try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Rua/ferret
[INFO] finished frobbing Rua/ferret
[INFO] frobbed toml for Rua/ferret written to work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/Rua/ferret/Cargo.toml
[INFO] started frobbing Rua/ferret
[INFO] finished frobbing Rua/ferret
[INFO] frobbed toml for Rua/ferret written to work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/Rua/ferret/Cargo.toml
[INFO] crate Rua/ferret has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Rua/ferret against master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104 for pr-57321
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57321/worker-2/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/Rua/ferret:/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" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 05fc972b6b395b3b44b9cccf14c13defe81446f7c3266f26f93d6ac45b8e862c
[INFO] running `"docker" "start" "-a" "05fc972b6b395b3b44b9cccf14c13defe81446f7c3266f26f93d6ac45b8e862c"`
[INFO] [stderr]    Compiling vulkano v0.11.1
[INFO] [stderr]     Checking vk-sys v0.4.0
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]    Compiling cmake v0.1.35
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling sdl2-sys v0.32.1
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking approx v0.3.0
[INFO] [stderr]     Checking num-complex v0.2.0
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]    Compiling shaderc v0.3.12
[INFO] [stderr]     Checking parking_lot v0.4.8
[INFO] [stderr]     Checking alga v0.7.0
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking crossbeam-channel v0.3.2
[INFO] [stderr]     Checking sdl2 v0.32.0
[INFO] [stderr]     Checking crossbeam v0.5.0
[INFO] [stderr] error: Could not compile `syn`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.13.11/src/lib.rs --color never --crate-type lib --emit=dep-info,link -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="proc-macro2"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=4a999f1d17e5f456 -C extra-filename=-4a999f1d17e5f456 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern proc_macro2=/opt/crater/target/debug/deps/libproc_macro2-024e75529607c409.rlib --extern quote=/opt/crater/target/debug/deps/libquote-da35bdd138898d84.rlib --extern unicode_xid=/opt/crater/target/debug/deps/libunicode_xid-f884987af9f0602d.rlib --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[ERROR] error running command: no output for 300 seconds
[INFO] running `"docker" "inspect" "05fc972b6b395b3b44b9cccf14c13defe81446f7c3266f26f93d6ac45b8e862c"`
[INFO] running `"docker" "rm" "-f" "05fc972b6b395b3b44b9cccf14c13defe81446f7c3266f26f93d6ac45b8e862c"`
[INFO] [stdout] 05fc972b6b395b3b44b9cccf14c13defe81446f7c3266f26f93d6ac45b8e862c