Nov 09 10:00:58.928 INFO checking kyren/luster against try#dc13be39fae8d4c607889b27de374b52586485a3 for pr-55632
Nov 09 10:00:58.929 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55632/worker-1/try#dc13be39fae8d4c607889b27de374b52586485a3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55632/try#dc13be39fae8d4c607889b27de374b52586485a3:/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 +dc13be39fae8d4c607889b27de374b52586485a3-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 10:00:59.299 INFO blam! 0721fdfe0f25340633baf8cf9e07540f25a8e120487d880610c0690e2ebaaf06
Nov 09 10:00:59.301 INFO running `"docker" "start" "-a" "0721fdfe0f25340633baf8cf9e07540f25a8e120487d880610c0690e2ebaaf06"`
Nov 09 10:01:00.946 INFO kablam! usermod: no changes
Nov 09 10:01:01.131 INFO kablam!     Checking proc-macro2 v0.3.8
Nov 09 10:01:01.131 INFO kablam!    Compiling syn v0.13.11
Nov 09 10:01:01.143 INFO kablam!     Checking failure v0.1.1
Nov 09 10:01:06.023 INFO kablam!     Checking quote v0.5.2
Nov 09 10:01:22.200 INFO kablam!    Compiling synstructure v0.8.1
Nov 09 10:01:27.867 INFO kablam!    Compiling gc-arena-derive v0.1.0 (/source/gc-arena/gc-arena-derive)
Nov 09 10:01:32.787 INFO kablam!     Checking gc-arena v0.1.0 (/source/gc-arena)
Nov 09 10:01:34.035 INFO kablam!     Checking luster v0.1.0 (/source)
Nov 09 10:01:42.003 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 09 10:01:42.003 INFO kablam!   --> tests/suite.rs:26:17
Nov 09 10:01:42.003 INFO kablam!    |
Nov 09 10:01:42.003 INFO kablam! 26 |                 writeln!(stdout, "parsing file {:?}", path);
Nov 09 10:01:42.003 INFO kablam!    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 10:01:42.003 INFO kablam!    |
Nov 09 10:01:42.003 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 09 10:01:42.003 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 09 10:01:42.003 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 10:01:42.003 INFO kablam! 
Nov 09 10:01:42.003 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 09 10:01:42.003 INFO kablam!   --> tests/suite.rs:28:21
Nov 09 10:01:42.003 INFO kablam!    |
Nov 09 10:01:42.003 INFO kablam! 28 |                     writeln!(stdout, "error encountered: {:?}", err);
Nov 09 10:01:42.003 INFO kablam!    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 10:01:42.003 INFO kablam!    |
Nov 09 10:01:42.003 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 09 10:01:42.003 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 10:01:42.003 INFO kablam! 
Nov 09 10:01:42.015 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 09 10:01:42.015 INFO kablam!   --> tests/suite.rs:33:13
Nov 09 10:01:42.015 INFO kablam!    |
Nov 09 10:01:42.015 INFO kablam! 33 |             writeln!(stdout, "skipping file {:?}", path);
Nov 09 10:01:42.015 INFO kablam!    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 10:01:42.015 INFO kablam!    |
Nov 09 10:01:42.015 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 09 10:01:42.015 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 10:01:42.015 INFO kablam! 
Nov 09 10:01:42.435 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 41.46s
Nov 09 10:01:42.471 INFO kablam! su: No module specific data is present
Nov 09 10:01:43.849 INFO running `"docker" "rm" "-f" "0721fdfe0f25340633baf8cf9e07540f25a8e120487d880610c0690e2ebaaf06"`
Nov 09 10:01:44.108 INFO blam! 0721fdfe0f25340633baf8cf9e07540f25a8e120487d880610c0690e2ebaaf06