Dec 19 17:00:39.894 INFO checking fitzgen/intrusive_splay_tree against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 17:00:39.894 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/fitzgen/intrusive_splay_tree:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 17:00:40.236 INFO [stdout] 5e91706b2cda9914969e3c9feff2382728da17e0cd373bbcf571e1b0bbf00710
Dec 19 17:00:40.242 INFO running `"docker" "start" "-a" "5e91706b2cda9914969e3c9feff2382728da17e0cd373bbcf571e1b0bbf00710"`
Dec 19 17:00:41.296 INFO [stderr]     Checking intrusive_splay_tree v0.1.0 (/opt/crater/workdir)
Dec 19 17:00:41.296 INFO [stderr]     Checking env_logger v0.5.6
Dec 19 17:00:41.978 INFO [stderr]     Checking quickcheck v0.6.2
Dec 19 17:00:44.336 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.11s
Dec 19 17:00:45.411 INFO running `"docker" "inspect" "5e91706b2cda9914969e3c9feff2382728da17e0cd373bbcf571e1b0bbf00710"`
Dec 19 17:00:45.724 INFO running `"docker" "rm" "-f" "5e91706b2cda9914969e3c9feff2382728da17e0cd373bbcf571e1b0bbf00710"`
Dec 19 17:00:45.927 INFO [stdout] 5e91706b2cda9914969e3c9feff2382728da17e0cd373bbcf571e1b0bbf00710