Dec 05 06:53:50.340 INFO checking serde_roundtrip-0.1.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 06:53:50.340 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 06:53:50.714 INFO [stdout] a0148434542a96a3f12d64f80c6ead14472d52f5d53a6e3895819319974eedad
Dec 05 06:53:50.717 INFO running `"docker" "start" "-a" "a0148434542a96a3f12d64f80c6ead14472d52f5d53a6e3895819319974eedad"`
Dec 05 06:53:52.594 INFO [stderr] usermod: no changes
Dec 05 06:53:52.716 INFO [stderr]     Checking serde_roundtrip v0.1.0 (/source)
Dec 05 06:53:52.716 INFO [stderr]    Compiling syn v0.11.11
Dec 05 06:53:58.215 INFO [stderr]    Compiling serde_codegen_internals v0.14.2
Dec 05 06:53:58.217 INFO [stderr]    Compiling serde_roundtrip_derive v0.1.2
Dec 05 06:54:01.403 INFO [stderr]    Compiling serde_derive v0.9.15
Dec 05 06:54:09.629 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.00s
Dec 05 06:54:09.631 INFO [stderr] su: No module specific data is present
Dec 05 06:54:09.899 INFO running `"docker" "inspect" "a0148434542a96a3f12d64f80c6ead14472d52f5d53a6e3895819319974eedad"`
Dec 05 06:54:09.991 INFO running `"docker" "rm" "-f" "a0148434542a96a3f12d64f80c6ead14472d52f5d53a6e3895819319974eedad"`
Dec 05 06:54:10.091 INFO [stdout] a0148434542a96a3f12d64f80c6ead14472d52f5d53a6e3895819319974eedad