Dec 18 18:08:45.288 INFO checking bitfields-0.1.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 18:08:45.288 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/bitfields/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 18:08:45.476 INFO [stdout] bfe9a09c2d7949a8d1d874c73a8818b33e323d71bdec9aacb5a623d9d3a0e68e
Dec 18 18:08:45.476 INFO running `"docker" "start" "-a" "bfe9a09c2d7949a8d1d874c73a8818b33e323d71bdec9aacb5a623d9d3a0e68e"`
Dec 18 18:08:45.924 INFO [stderr]     Checking bitfields v0.1.0 (/opt/crater/workdir)
Dec 18 18:08:46.220 INFO [stderr] warning: function is never used: `byte_bit_offset`
Dec 18 18:08:46.220 INFO [stderr]    --> src/lib.rs:107:5
Dec 18 18:08:46.220 INFO [stderr]     |
Dec 18 18:08:46.220 INFO [stderr] 107 |     pub fn byte_bit_offset(idx: usize) -> (usize, usize) {
Dec 18 18:08:46.220 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 18:08:46.220 INFO [stderr]     |
Dec 18 18:08:46.220 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 18:08:46.220 INFO [stderr] 
Dec 18 18:08:46.220 INFO [stderr] warning: function is never used: `test_bit`
Dec 18 18:08:46.220 INFO [stderr]    --> src/lib.rs:115:5
Dec 18 18:08:46.220 INFO [stderr]     |
Dec 18 18:08:46.220 INFO [stderr] 115 |     pub fn test_bit(target: &u8, pos: usize) -> bool {
Dec 18 18:08:46.220 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 18:08:46.220 INFO [stderr] 
Dec 18 18:08:46.220 INFO [stderr] warning: function is never used: `set_bit`
Dec 18 18:08:46.220 INFO [stderr]    --> src/lib.rs:119:5
Dec 18 18:08:46.220 INFO [stderr]     |
Dec 18 18:08:46.220 INFO [stderr] 119 |     pub fn set_bit(target: &mut u8, pos: usize) {
Dec 18 18:08:46.220 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 18:08:46.220 INFO [stderr] 
Dec 18 18:08:46.220 INFO [stderr] warning: function is never used: `unset_bit`
Dec 18 18:08:46.220 INFO [stderr]    --> src/lib.rs:127:5
Dec 18 18:08:46.220 INFO [stderr]     |
Dec 18 18:08:46.220 INFO [stderr] 127 |     pub fn unset_bit(target: &mut u8, pos: usize) {
Dec 18 18:08:46.220 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 18:08:46.220 INFO [stderr] 
Dec 18 18:08:46.220 INFO [stderr] warning: function is never used: `toggle_bit`
Dec 18 18:08:46.220 INFO [stderr]    --> src/lib.rs:131:5
Dec 18 18:08:46.220 INFO [stderr]     |
Dec 18 18:08:46.220 INFO [stderr] 131 |     pub fn toggle_bit(target: &mut u8, pos: usize) {
Dec 18 18:08:46.220 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 18:08:46.220 INFO [stderr] 
Dec 18 18:08:46.440 INFO [stderr] warning: variable does not need to be mutable
Dec 18 18:08:46.440 INFO [stderr]    --> src/lib.rs:396:13
Dec 18 18:08:46.440 INFO [stderr]     |
Dec 18 18:08:46.440 INFO [stderr] 396 |         let mut storage = vec![0u8];
Dec 18 18:08:46.440 INFO [stderr]     |             ----^^^^^^^
Dec 18 18:08:46.440 INFO [stderr]     |             |
Dec 18 18:08:46.440 INFO [stderr]     |             help: remove this `mut`
Dec 18 18:08:46.440 INFO [stderr]     |
Dec 18 18:08:46.440 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 18:08:46.440 INFO [stderr] 
Dec 18 18:08:46.440 INFO [stderr] warning: function is never used: `byte_bit_offset`
Dec 18 18:08:46.440 INFO [stderr]    --> src/lib.rs:107:5
Dec 18 18:08:46.440 INFO [stderr]     |
Dec 18 18:08:46.440 INFO [stderr] 107 |     pub fn byte_bit_offset(idx: usize) -> (usize, usize) {
Dec 18 18:08:46.440 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 18:08:46.440 INFO [stderr]     |
Dec 18 18:08:46.440 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 18:08:46.440 INFO [stderr] 
Dec 18 18:08:46.480 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
Dec 18 18:08:46.934 INFO running `"docker" "inspect" "bfe9a09c2d7949a8d1d874c73a8818b33e323d71bdec9aacb5a623d9d3a0e68e"`
Dec 18 18:08:47.058 INFO running `"docker" "rm" "-f" "bfe9a09c2d7949a8d1d874c73a8818b33e323d71bdec9aacb5a623d9d3a0e68e"`
Dec 18 18:08:47.268 INFO [stdout] bfe9a09c2d7949a8d1d874c73a8818b33e323d71bdec9aacb5a623d9d3a0e68e