[INFO] crate signal-hook 0.1.6 is already in cache
[INFO] extracting crate signal-hook 0.1.6 into work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/reg/signal-hook/0.1.6
[INFO] extracting crate signal-hook 0.1.6 into work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/reg/signal-hook/0.1.6
[INFO] validating manifest of signal-hook-0.1.6 on toolchain master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of signal-hook-0.1.6 on toolchain try#bad365140e1e8233b42b21af70a407f14ce5fec5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing signal-hook-0.1.6
[INFO] finished frobbing signal-hook-0.1.6
[INFO] frobbed toml for signal-hook-0.1.6 written to work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/reg/signal-hook/0.1.6/Cargo.toml
[INFO] started frobbing signal-hook-0.1.6
[INFO] finished frobbing signal-hook-0.1.6
[INFO] frobbed toml for signal-hook-0.1.6 written to work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/reg/signal-hook/0.1.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking signal-hook-0.1.6 against try#bad365140e1e8233b42b21af70a407f14ce5fec5 for pr-56896
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56896/worker-0/try#bad365140e1e8233b42b21af70a407f14ce5fec5:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/reg/signal-hook/0.1.6:/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" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c2dfdb65c31b40ae50a6cf2ba87d96a5271198848025c780627194942a1162ee
[INFO] running `"docker" "start" "-a" "c2dfdb65c31b40ae50a6cf2ba87d96a5271198848025c780627194942a1162ee"`
[INFO] [stderr]     Checking arc-swap v0.3.6
[INFO] [stderr] error: expected meta item sequence
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/arc-swap-0.3.6/src/lib.rs:500:5
[INFO] [stderr]     |
[INFO] [stderr] 500 |     #[deprecated = "Use upgrade instead"]
[INFO] [stderr]     |     ^^----------------------------------^
[INFO] [stderr]     |       |
[INFO] [stderr]     |       help: use the `note` key: `deprecated(note = "Use upgrade instead")`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `arc-swap`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c2dfdb65c31b40ae50a6cf2ba87d96a5271198848025c780627194942a1162ee"`
[INFO] running `"docker" "rm" "-f" "c2dfdb65c31b40ae50a6cf2ba87d96a5271198848025c780627194942a1162ee"`
[INFO] [stdout] c2dfdb65c31b40ae50a6cf2ba87d96a5271198848025c780627194942a1162ee