Nov 09 10:00:59.569 INFO checking kyren/luster against master#653da4fd006c97625247acd7e076d0782cdc149b for pr-55632
Nov 09 10:00:59.569 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55632/worker-4/master#653da4fd006c97625247acd7e076d0782cdc149b:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55632/master#653da4fd006c97625247acd7e076d0782cdc149b:/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 +653da4fd006c97625247acd7e076d0782cdc149b-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 09 10:00:59.931 INFO blam! 0227d289ca13bd1a554371845468bd89cc4fb87236adb1038a50657adbd92c58
Nov 09 10:00:59.933 INFO running `"docker" "start" "-a" "0227d289ca13bd1a554371845468bd89cc4fb87236adb1038a50657adbd92c58"`
Nov 09 10:01:01.890 INFO kablam! usermod: no changes
Nov 09 10:01:02.087 INFO kablam!     Checking proc-macro2 v0.3.8
Nov 09 10:01:02.087 INFO kablam!    Compiling syn v0.13.11
Nov 09 10:01:04.784 INFO kablam!     Checking quote v0.5.2
Nov 09 10:01:24.187 INFO kablam!    Compiling synstructure v0.8.1
Nov 09 10:01:29.635 INFO kablam!    Compiling gc-arena-derive v0.1.0 (/source/gc-arena/gc-arena-derive)
Nov 09 10:01:34.547 INFO kablam!     Checking gc-arena v0.1.0 (/source/gc-arena)
Nov 09 10:01:36.204 INFO kablam!     Checking luster v0.1.0 (/source)
Nov 09 10:01:43.923 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 09 10:01:43.923 INFO kablam!   --> tests/suite.rs:26:17
Nov 09 10:01:43.923 INFO kablam!    |
Nov 09 10:01:43.923 INFO kablam! 26 |                 writeln!(stdout, "parsing file {:?}", path);
Nov 09 10:01:43.924 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 10:01:43.924 INFO kablam!    |
Nov 09 10:01:43.924 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 09 10:01:43.924 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 09 10:01:43.924 INFO kablam!    = 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 09 10:01:43.924 INFO kablam! 
Nov 09 10:01:43.925 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 09 10:01:43.925 INFO kablam!   --> tests/suite.rs:28:21
Nov 09 10:01:43.925 INFO kablam!    |
Nov 09 10:01:43.925 INFO kablam! 28 |                     writeln!(stdout, "error encountered: {:?}", err);
Nov 09 10:01:43.925 INFO kablam!    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 10:01:43.925 INFO kablam!    |
Nov 09 10:01:43.926 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 09 10:01:43.926 INFO kablam!    = 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 09 10:01:43.926 INFO kablam! 
Nov 09 10:01:43.926 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 09 10:01:43.926 INFO kablam!   --> tests/suite.rs:33:13
Nov 09 10:01:43.926 INFO kablam!    |
Nov 09 10:01:43.926 INFO kablam! 33 |             writeln!(stdout, "skipping file {:?}", path);
Nov 09 10:01:43.927 INFO kablam!    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 10:01:43.927 INFO kablam!    |
Nov 09 10:01:43.927 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 09 10:01:43.927 INFO kablam!    = 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 09 10:01:43.927 INFO kablam! 
Nov 09 10:01:44.800 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 42.88s
Nov 09 10:01:44.818 INFO kablam! su: No module specific data is present
Nov 09 10:01:45.883 INFO running `"docker" "rm" "-f" "0227d289ca13bd1a554371845468bd89cc4fb87236adb1038a50657adbd92c58"`
Nov 09 10:01:46.159 INFO blam! 0227d289ca13bd1a554371845468bd89cc4fb87236adb1038a50657adbd92c58