Nov 28 02:00:36.909 INFO checking kyren/luster against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 02:00:36.909 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-7/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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"`
Nov 28 02:00:37.131 INFO [stdout] f424867c76496653cf12bfddd0bbf1edde8d29d50d62ed860c8951a38b2c0771
Nov 28 02:00:37.133 INFO running `"docker" "start" "-a" "f424867c76496653cf12bfddd0bbf1edde8d29d50d62ed860c8951a38b2c0771"`
Nov 28 02:00:37.720 INFO [stderr] usermod: no changes
Nov 28 02:00:37.856 INFO [stderr]     Checking proc-macro2 v0.3.8
Nov 28 02:00:37.872 INFO [stderr]    Compiling syn v0.13.11
Nov 28 02:00:41.604 INFO [stderr]     Checking quote v0.5.2
Nov 28 02:00:57.640 INFO [stderr]    Compiling synstructure v0.8.1
Nov 28 02:01:01.757 INFO [stderr]     Checking gc-arena-derive v0.1.0 (/source/gc-arena/gc-arena-derive)
Nov 28 02:01:07.828 INFO [stderr]     Checking gc-arena v0.1.0 (/source/gc-arena)
Nov 28 02:01:08.757 INFO [stderr]     Checking luster v0.1.0 (/source)
Nov 28 02:01:16.304 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 02:01:16.304 INFO [stderr]   --> tests/suite.rs:26:17
Nov 28 02:01:16.304 INFO [stderr]    |
Nov 28 02:01:16.304 INFO [stderr] 26 |                 writeln!(stdout, "parsing file {:?}", path);
Nov 28 02:01:16.304 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 02:01:16.304 INFO [stderr]    |
Nov 28 02:01:16.304 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 28 02:01:16.304 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 02:01:16.304 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 02:01:16.304 INFO [stderr] 
Nov 28 02:01:16.304 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 02:01:16.304 INFO [stderr]   --> tests/suite.rs:28:21
Nov 28 02:01:16.304 INFO [stderr]    |
Nov 28 02:01:16.304 INFO [stderr] 28 |                     writeln!(stdout, "error encountered: {:?}", err);
Nov 28 02:01:16.304 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 02:01:16.304 INFO [stderr]    |
Nov 28 02:01:16.304 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 02:01:16.304 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 02:01:16.304 INFO [stderr] 
Nov 28 02:01:16.304 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 02:01:16.304 INFO [stderr]   --> tests/suite.rs:33:13
Nov 28 02:01:16.304 INFO [stderr]    |
Nov 28 02:01:16.304 INFO [stderr] 33 |             writeln!(stdout, "skipping file {:?}", path);
Nov 28 02:01:16.304 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 02:01:16.304 INFO [stderr]    |
Nov 28 02:01:16.304 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 02:01:16.312 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 28 02:01:16.312 INFO [stderr] 
Nov 28 02:01:16.496 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.73s
Nov 28 02:01:16.496 INFO [stderr] su: No module specific data is present
Nov 28 02:01:17.412 INFO running `"docker" "inspect" "f424867c76496653cf12bfddd0bbf1edde8d29d50d62ed860c8951a38b2c0771"`
Nov 28 02:01:17.737 INFO running `"docker" "rm" "-f" "f424867c76496653cf12bfddd0bbf1edde8d29d50d62ed860c8951a38b2c0771"`
Nov 28 02:01:18.017 INFO [stdout] f424867c76496653cf12bfddd0bbf1edde8d29d50d62ed860c8951a38b2c0771