Dec 11 12:28:37.462 INFO checking numberMumbler/Attic against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 12:28:37.462 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 12:28:37.892 INFO [stdout] a5854beb7d2e10d5ebddf93983e45e30a5758db52386e7f2e5db0370852cb6d3
Dec 11 12:28:37.894 INFO running `"docker" "start" "-a" "a5854beb7d2e10d5ebddf93983e45e30a5758db52386e7f2e5db0370852cb6d3"`
Dec 11 12:28:39.113 INFO [stderr] usermod: no changes
Dec 11 12:28:39.384 INFO [stderr]     Checking serde v1.0.51
Dec 11 12:28:39.384 INFO [stderr]     Checking rust-crypto v0.2.36
Dec 11 12:28:39.386 INFO [stderr]    Compiling serde_derive v1.0.51
Dec 11 12:28:59.161 INFO [stderr]     Checking serde_json v1.0.17
Dec 11 12:29:04.235 INFO [stderr]     Checking attic-core-lib v0.1.0 (/source/core-lib)
Dec 11 12:29:05.464 INFO [stderr]     Checking attic v0.1.0 (/source)
Dec 11 12:29:09.848 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.70s
Dec 11 12:29:09.872 INFO [stderr] su: No module specific data is present
Dec 11 12:29:10.917 INFO running `"docker" "inspect" "a5854beb7d2e10d5ebddf93983e45e30a5758db52386e7f2e5db0370852cb6d3"`
Dec 11 12:29:11.334 INFO running `"docker" "rm" "-f" "a5854beb7d2e10d5ebddf93983e45e30a5758db52386e7f2e5db0370852cb6d3"`
Dec 11 12:29:11.624 INFO [stdout] a5854beb7d2e10d5ebddf93983e45e30a5758db52386e7f2e5db0370852cb6d3