Dec 19 10:27:34.677 INFO checking rail44/kntn against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 10:27:34.677 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/rail44/kntn:/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 10:27:35.086 INFO [stdout] 52d91ed2a21c50afe874b556ade5c535df4255cf4c18bdbbf463ae333afc97f0
Dec 19 10:27:35.096 INFO running `"docker" "start" "-a" "52d91ed2a21c50afe874b556ade5c535df4255cf4c18bdbbf463ae333afc97f0"`
Dec 19 10:27:36.584 INFO [stderr]     Checking rand v0.4.1
Dec 19 10:27:36.584 INFO [stderr]     Checking serde_json v1.0.8
Dec 19 10:27:36.584 INFO [stderr]     Checking regex v0.2.3
Dec 19 10:27:40.253 INFO [stderr]     Checking handlebars v0.30.0-beta.4
Dec 19 10:27:42.321 INFO [stderr]     Checking kntn v0.2.0 (/opt/crater/workdir)
Dec 19 10:27:42.669 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.24s
Dec 19 10:27:43.146 INFO running `"docker" "inspect" "52d91ed2a21c50afe874b556ade5c535df4255cf4c18bdbbf463ae333afc97f0"`
Dec 19 10:27:43.366 INFO running `"docker" "rm" "-f" "52d91ed2a21c50afe874b556ade5c535df4255cf4c18bdbbf463ae333afc97f0"`
Dec 19 10:27:43.592 INFO [stdout] 52d91ed2a21c50afe874b556ade5c535df4255cf4c18bdbbf463ae333afc97f0