Dec 19 15:38:57.731 INFO checking ipost/rmosaic against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 15:38:57.731 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/ipost/rmosaic:/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 15:38:58.230 INFO [stdout] 340a000e77b5ebed18fe4ce036f7097b01879e078f1239b7eec2d86d41069bba
Dec 19 15:38:58.232 INFO running `"docker" "start" "-a" "340a000e77b5ebed18fe4ce036f7097b01879e078f1239b7eec2d86d41069bba"`
Dec 19 15:38:59.672 INFO [stderr]     Checking serde v1.0.47
Dec 19 15:38:59.680 INFO [stderr]    Compiling serde_derive v1.0.48
Dec 19 15:39:13.115 INFO [stderr]     Checking serde_json v1.0.17
Dec 19 15:39:15.010 INFO [stderr]     Checking rmosaic v0.1.0 (/opt/crater/workdir)
Dec 19 15:39:16.382 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.85s
Dec 19 15:39:17.546 INFO running `"docker" "inspect" "340a000e77b5ebed18fe4ce036f7097b01879e078f1239b7eec2d86d41069bba"`
Dec 19 15:39:17.900 INFO running `"docker" "rm" "-f" "340a000e77b5ebed18fe4ce036f7097b01879e078f1239b7eec2d86d41069bba"`
Dec 19 15:39:18.238 INFO [stdout] 340a000e77b5ebed18fe4ce036f7097b01879e078f1239b7eec2d86d41069bba