Oct 13 12:31:31.013 INFO checking linux_l6470-0.1.0 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 12:31:31.013 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-2/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-2/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 12:31:31.234 INFO blam! dbf8934675c199dee10b423271962182ed9fcac49c91ef41af725c81439ef8af
Oct 13 12:31:31.235 INFO running `"docker" "start" "-a" "dbf8934675c199dee10b423271962182ed9fcac49c91ef41af725c81439ef8af"`
Oct 13 12:31:31.789 INFO kablam! usermod: no changes
Oct 13 12:31:31.853 INFO kablam!     Checking nix v0.6.0
Oct 13 12:31:31.853 INFO kablam!     Checking sysfs_gpio v0.5.3
Oct 13 12:31:35.244 INFO kablam!     Checking spidev v0.3.0
Oct 13 12:31:36.340 INFO kablam!     Checking linux_l6470 v0.1.0 (/source)
Oct 13 12:31:37.572 INFO kablam! warning: unused variable: `tick_ns`
Oct 13 12:31:37.572 INFO kablam!   --> src/lib.rs:71:13
Oct 13 12:31:37.572 INFO kablam!    |
Oct 13 12:31:37.572 INFO kablam! 71 |         let tick_ns = 250;
Oct 13 12:31:37.572 INFO kablam!    |             ^^^^^^^ help: consider using `_tick_ns` instead
Oct 13 12:31:37.572 INFO kablam!    |
Oct 13 12:31:37.572 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 13 12:31:37.572 INFO kablam! 
Oct 13 12:31:37.621 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 12:31:37.621 INFO kablam!    --> src/lib.rs:178:9
Oct 13 12:31:37.621 INFO kablam!     |
Oct 13 12:31:37.621 INFO kablam! 178 |         self.transfer(&buf[0..self.daisy_chain as usize]);
Oct 13 12:31:37.621 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 12:31:37.621 INFO kablam!     |
Oct 13 12:31:37.621 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Oct 13 12:31:37.621 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 12:31:37.621 INFO kablam! 
Oct 13 12:31:37.732 INFO kablam! warning: unused variable: `tick_ns`
Oct 13 12:31:37.732 INFO kablam!   --> src/lib.rs:71:13
Oct 13 12:31:37.732 INFO kablam!    |
Oct 13 12:31:37.732 INFO kablam! 71 |         let tick_ns = 250;
Oct 13 12:31:37.732 INFO kablam!    |             ^^^^^^^ help: consider using `_tick_ns` instead
Oct 13 12:31:37.733 INFO kablam!    |
Oct 13 12:31:37.733 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 13 12:31:37.733 INFO kablam! 
Oct 13 12:31:37.775 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 12:31:37.775 INFO kablam!    --> src/lib.rs:178:9
Oct 13 12:31:37.775 INFO kablam!     |
Oct 13 12:31:37.775 INFO kablam! 178 |         self.transfer(&buf[0..self.daisy_chain as usize]);
Oct 13 12:31:37.775 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 12:31:37.775 INFO kablam!     |
Oct 13 12:31:37.775 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Oct 13 12:31:37.775 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 12:31:37.775 INFO kablam! 
Oct 13 12:31:37.798 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.99s
Oct 13 12:31:37.802 INFO kablam! su: No module specific data is present
Oct 13 12:31:38.048 INFO running `"docker" "rm" "-f" "dbf8934675c199dee10b423271962182ed9fcac49c91ef41af725c81439ef8af"`
Oct 13 12:31:38.176 INFO blam! dbf8934675c199dee10b423271962182ed9fcac49c91ef41af725c81439ef8af