Dec 04 12:00:25.790 INFO checking racer-rust/racer against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 12:00:25.790 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 12:00:26.151 INFO [stdout] 0c6a9cdcc3aa801fe702e2b56ff642005096a2028f9495efb6a8f0da20c7f4a6
Dec 04 12:00:26.156 INFO running `"docker" "start" "-a" "0c6a9cdcc3aa801fe702e2b56ff642005096a2028f9495efb6a8f0da20c7f4a6"`
Dec 04 12:00:27.118 INFO [stderr] usermod: no changes
Dec 04 12:00:27.563 INFO [stderr]    Compiling rustc-rayon-core v0.1.1
Dec 04 12:00:27.575 INFO [stderr]     Checking rustc-ap-graphviz v297.0.0
Dec 04 12:00:27.575 INFO [stderr]     Checking scoped-tls v0.1.2
Dec 04 12:00:27.575 INFO [stderr]    Compiling rustc-ap-rustc_target v297.0.0
Dec 04 12:00:27.579 INFO [stderr]    Compiling rustc-ap-syntax v297.0.0
Dec 04 12:00:27.583 INFO [stderr]     Checking rls-span v0.4.0
Dec 04 12:00:27.583 INFO [stderr]     Checking rand_isaac v0.1.1
Dec 04 12:00:27.587 INFO [stderr]     Checking rustc-hash v1.0.1
Dec 04 12:00:28.471 INFO [stderr]     Checking regex-syntax v0.6.3
Dec 04 12:00:29.173 INFO [stderr]     Checking rustc-ap-rustc_cratesio_shim v297.0.0
Dec 04 12:00:29.225 INFO [stderr]     Checking ena v0.9.3
Dec 04 12:00:29.269 INFO [stderr]     Checking smallvec v0.6.6
Dec 04 12:00:29.985 INFO [stderr]     Checking lock_api v0.1.5
Dec 04 12:00:30.129 INFO [stderr]    Compiling parking_lot_core v0.3.1
Dec 04 12:00:30.268 INFO [stderr]    Compiling serde_derive v1.0.80
Dec 04 12:00:30.431 INFO [stderr]    Compiling derive_more v0.13.0
Dec 04 12:00:32.656 INFO [stderr]     Checking rand v0.6.1
Dec 04 12:00:33.530 INFO [stderr]     Checking rustc-ap-serialize v297.0.0
Dec 04 12:00:33.530 INFO [stderr]     Checking parking_lot_core v0.2.14
Dec 04 12:00:37.215 INFO [stderr]     Checking rustc-rayon v0.1.1
Dec 04 12:00:37.627 INFO [stderr]     Checking parking_lot v0.6.4
Dec 04 12:00:51.347 INFO [stderr]     Checking tempfile v3.0.5
Dec 04 12:00:54.179 INFO [stderr]     Checking regex v1.0.6
Dec 04 12:00:54.923 INFO [stderr]     Checking rustc-ap-rustc_data_structures v297.0.0
Dec 04 12:01:00.887 INFO [stderr]     Checking env_logger v0.6.0
Dec 04 12:01:07.603 INFO [stderr]     Checking rustc-ap-arena v297.0.0
Dec 04 12:01:10.941 INFO [stderr]     Checking rustc-ap-syntax_pos v297.0.0
Dec 04 12:01:12.075 INFO [stderr]     Checking serde v1.0.80
Dec 04 12:01:14.949 INFO [stderr]     Checking rustc-ap-rustc_errors v297.0.0
Dec 04 12:01:27.729 INFO [stderr]     Checking racer-interner v0.1.0 (/source/interner)
Dec 04 12:01:27.729 INFO [stderr]     Checking serde_json v1.0.33
Dec 04 12:01:33.509 INFO [stderr]     Checking racer-cargo-metadata v0.1.1 (/source/metadata)
Dec 04 12:01:44.498 INFO [stderr]     Checking racer v2.1.14 (/source)
Dec 04 12:01:49.310 INFO [stderr]     Checking racer-testutils v0.1.0 (/source/testutils)
Dec 04 12:02:20.786 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 53s
Dec 04 12:02:20.815 INFO [stderr] su: No module specific data is present
Dec 04 12:02:21.959 INFO running `"docker" "inspect" "0c6a9cdcc3aa801fe702e2b56ff642005096a2028f9495efb6a8f0da20c7f4a6"`
Dec 04 12:02:22.287 INFO running `"docker" "rm" "-f" "0c6a9cdcc3aa801fe702e2b56ff642005096a2028f9495efb6a8f0da20c7f4a6"`
Dec 04 12:02:22.639 INFO [stdout] 0c6a9cdcc3aa801fe702e2b56ff642005096a2028f9495efb6a8f0da20c7f4a6