Dec 19 19:47:11.039 INFO checking blt/mmap_comm against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 19:47:11.040 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/blt/mmap_comm:/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 19:47:11.378 INFO [stdout] 7577f7f0c04ae269cf2c0b0fb270e56c37c751b53d8aa2ea09ab74512c591f4d
Dec 19 19:47:11.380 INFO running `"docker" "start" "-a" "7577f7f0c04ae269cf2c0b0fb270e56c37c751b53d8aa2ea09ab74512c591f4d"`
Dec 19 19:47:12.865 INFO [stderr]     Checking quantiles v0.7.0
Dec 19 19:47:12.865 INFO [stderr]     Checking clap v2.29.1
Dec 19 19:47:17.370 INFO [stderr]     Checking mmap_comm v0.1.0 (/opt/crater/workdir)
Dec 19 19:47:17.933 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.16s
Dec 19 19:47:18.590 INFO running `"docker" "inspect" "7577f7f0c04ae269cf2c0b0fb270e56c37c751b53d8aa2ea09ab74512c591f4d"`
Dec 19 19:47:18.709 INFO running `"docker" "rm" "-f" "7577f7f0c04ae269cf2c0b0fb270e56c37c751b53d8aa2ea09ab74512c591f4d"`
Dec 19 19:47:18.863 INFO [stdout] 7577f7f0c04ae269cf2c0b0fb270e56c37c751b53d8aa2ea09ab74512c591f4d