Dec 05 13:51:59.077 INFO checking fibers_transport-0.1.2 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 13:51:59.077 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 13:51:59.375 INFO [stdout] 12b026a18d779a882146f6a1cbd87408b44ea2941852b6ed834ff265eff013e4
Dec 05 13:51:59.379 INFO running `"docker" "start" "-a" "12b026a18d779a882146f6a1cbd87408b44ea2941852b6ed834ff265eff013e4"`
Dec 05 13:52:00.383 INFO [stderr] usermod: no changes
Dec 05 13:52:00.531 INFO [stderr]    Compiling syn v0.15.22
Dec 05 13:52:08.673 INFO [stderr]    Compiling trackable_derive v0.1.1
Dec 05 13:52:10.739 INFO [stderr]     Checking trackable v0.2.20
Dec 05 13:52:11.460 INFO [stderr]     Checking bytecodec v0.4.11
Dec 05 13:52:15.287 INFO [stderr]     Checking fibers_transport v0.1.2 (/source)
Dec 05 13:52:18.623 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.19s
Dec 05 13:52:18.623 INFO [stderr] su: No module specific data is present
Dec 05 13:52:19.539 INFO running `"docker" "inspect" "12b026a18d779a882146f6a1cbd87408b44ea2941852b6ed834ff265eff013e4"`
Dec 05 13:52:19.847 INFO running `"docker" "rm" "-f" "12b026a18d779a882146f6a1cbd87408b44ea2941852b6ed834ff265eff013e4"`
Dec 05 13:52:20.227 INFO [stdout] 12b026a18d779a882146f6a1cbd87408b44ea2941852b6ed834ff265eff013e4