Oct 13 16:09:49.567 INFO checking derive_type_level_lib-0.0.21 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 16:09:49.567 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-1/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-1/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 13 16:09:49.960 INFO blam! 80f232a762453b51b304e520f8753fa665fd3591cce1c3e33a5352153b1fc101
Oct 13 16:09:49.962 INFO running `"docker" "start" "-a" "80f232a762453b51b304e520f8753fa665fd3591cce1c3e33a5352153b1fc101"`
Oct 13 16:09:50.627 INFO kablam! usermod: no changes
Oct 13 16:09:50.718 INFO kablam!    Compiling core_extensions v0.1.4
Oct 13 16:09:50.718 INFO kablam!    Compiling derive_type_level_lib v0.0.21 (/source)
Oct 13 16:09:50.731 INFO kablam!     Checking syn v0.14.9
Oct 13 16:10:13.968 INFO kablam! warning: struct is never constructed: `FilteredAttrs`
Oct 13 16:10:13.968 INFO kablam!   --> src/attribute_errors/mod.rs:24:1
Oct 13 16:10:13.968 INFO kablam!    |
Oct 13 16:10:13.968 INFO kablam! 24 | pub struct FilteredAttrs<'a,F>{
Oct 13 16:10:13.968 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 16:10:13.968 INFO kablam!    |
Oct 13 16:10:13.968 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 13 16:10:13.968 INFO kablam! 
Oct 13 16:10:13.968 INFO kablam! warning: method is never used: `with_filter`
Oct 13 16:10:13.968 INFO kablam!   --> src/attribute_errors/mod.rs:37:5
Oct 13 16:10:13.968 INFO kablam!    |
Oct 13 16:10:13.968 INFO kablam! 37 | /     pub fn with_filter<F>(&'a self,filter:F)->FilteredAttrs<'a,F>
Oct 13 16:10:13.968 INFO kablam! 38 | |     where 
Oct 13 16:10:13.968 INFO kablam! 39 | |         F:Fn(&str)->bool
Oct 13 16:10:13.968 INFO kablam! 40 | |     {
Oct 13 16:10:13.968 INFO kablam! ...  |
Oct 13 16:10:13.968 INFO kablam! 44 | |         }
Oct 13 16:10:13.968 INFO kablam! 45 | |     }
Oct 13 16:10:13.968 INFO kablam!    | |_____^
Oct 13 16:10:13.968 INFO kablam! 
Oct 13 16:10:14.512 INFO kablam! warning: struct is never constructed: `FilteredAttrs`
Oct 13 16:10:14.512 INFO kablam!   --> src/attribute_errors/mod.rs:24:1
Oct 13 16:10:14.512 INFO kablam!    |
Oct 13 16:10:14.512 INFO kablam! 24 | pub struct FilteredAttrs<'a,F>{
Oct 13 16:10:14.512 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 16:10:14.512 INFO kablam!    |
Oct 13 16:10:14.512 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 13 16:10:14.512 INFO kablam! 
Oct 13 16:10:14.512 INFO kablam! warning: method is never used: `with_filter`
Oct 13 16:10:14.512 INFO kablam!   --> src/attribute_errors/mod.rs:37:5
Oct 13 16:10:14.512 INFO kablam!    |
Oct 13 16:10:14.512 INFO kablam! 37 | /     pub fn with_filter<F>(&'a self,filter:F)->FilteredAttrs<'a,F>
Oct 13 16:10:14.512 INFO kablam! 38 | |     where 
Oct 13 16:10:14.512 INFO kablam! 39 | |         F:Fn(&str)->bool
Oct 13 16:10:14.512 INFO kablam! 40 | |     {
Oct 13 16:10:14.512 INFO kablam! ...  |
Oct 13 16:10:14.512 INFO kablam! 44 | |         }
Oct 13 16:10:14.512 INFO kablam! 45 | |     }
Oct 13 16:10:14.512 INFO kablam!    | |_____^
Oct 13 16:10:14.512 INFO kablam! 
Oct 13 16:10:14.735 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 24.09s
Oct 13 16:10:14.740 INFO kablam! su: No module specific data is present
Oct 13 16:10:15.080 INFO running `"docker" "rm" "-f" "80f232a762453b51b304e520f8753fa665fd3591cce1c3e33a5352153b1fc101"`
Oct 13 16:10:15.212 INFO blam! 80f232a762453b51b304e520f8753fa665fd3591cce1c3e33a5352153b1fc101