[INFO] updating cached repository lalaithion/errorcorrection
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lalaithion/errorcorrection
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lalaithion/errorcorrection" "work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/lalaithion/errorcorrection"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/lalaithion/errorcorrection'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lalaithion/errorcorrection" "work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/lalaithion/errorcorrection"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/lalaithion/errorcorrection'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 740c0b708c0158a7c86cfa9fc78375afaf523807
[INFO] sha for GitHub repo lalaithion/errorcorrection: 740c0b708c0158a7c86cfa9fc78375afaf523807
[INFO] validating manifest of lalaithion/errorcorrection on toolchain master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lalaithion/errorcorrection on toolchain try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lalaithion/errorcorrection
[INFO] finished frobbing lalaithion/errorcorrection
[INFO] frobbed toml for lalaithion/errorcorrection written to work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/lalaithion/errorcorrection/Cargo.toml
[INFO] started frobbing lalaithion/errorcorrection
[INFO] finished frobbing lalaithion/errorcorrection
[INFO] frobbed toml for lalaithion/errorcorrection written to work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/lalaithion/errorcorrection/Cargo.toml
[INFO] crate lalaithion/errorcorrection has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking lalaithion/errorcorrection against try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0 for pr-57321
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57321/worker-1/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/lalaithion/errorcorrection:/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" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 69c8b33065ddfda2c5b1650d393f0982cedc67d2c88b94b242fefd253ccfc1db
[INFO] running `"docker" "start" "-a" "69c8b33065ddfda2c5b1650d393f0982cedc67d2c88b94b242fefd253ccfc1db"`
[INFO] [stderr]     Checking eccfile v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/hamming.rs:377:14
[INFO] [stderr]     |
[INFO] [stderr] 377 |         let (i, result) = arrange(&plain, i, 3);
[INFO] [stderr]     |              ^ help: consider using `_i` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `MutBlocks`
[INFO] [stderr]   --> src/bitvec.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | type MutBlocks<'a> = slice::IterMut<'a, u32>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `MatchWords`
[INFO] [stderr]   --> src/bitvec.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | type MatchWords<'a> = Chain<Enumerate<Blocks<'a>>, Skip<Take<Enumerate<Repeat<u32>>>>>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mask_for_bits`
[INFO] [stderr]   --> src/bitvec.rs:69:1
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn mask_for_bits(bits: usize) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `process`
[INFO] [stderr]   --> src/bitvec.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn process<F>(&mut self, other: &BitVec, mut op: F) -> bool where F: FnMut(u32, u32) -> u32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `blocks_mut`
[INFO] [stderr]   --> src/bitvec.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     fn blocks_mut(&mut self) -> MutBlocks {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_fn`
[INFO] [stderr]    --> src/bitvec.rs:225:5
[INFO] [stderr]     |
[INFO] [stderr] 225 |     pub fn from_fn<F>(len: usize, mut f: F) -> BitVec where F: FnMut(usize) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_all`
[INFO] [stderr]    --> src/bitvec.rs:305:5
[INFO] [stderr]     |
[INFO] [stderr] 305 |     pub fn set_all(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `negate`
[INFO] [stderr]    --> src/bitvec.rs:326:5
[INFO] [stderr]     |
[INFO] [stderr] 326 |     pub fn negate(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `union`
[INFO] [stderr]    --> src/bitvec.rs:358:5
[INFO] [stderr]     |
[INFO] [stderr] 358 |     pub fn union(&mut self, other: &BitVec) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `intersect`
[INFO] [stderr]    --> src/bitvec.rs:389:5
[INFO] [stderr]     |
[INFO] [stderr] 389 |     pub fn intersect(&mut self, other: &BitVec) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `difference`
[INFO] [stderr]    --> src/bitvec.rs:427:5
[INFO] [stderr]     |
[INFO] [stderr] 427 |     pub fn difference(&mut self, other: &BitVec) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `all`
[INFO] [stderr]    --> src/bitvec.rs:445:5
[INFO] [stderr]     |
[INFO] [stderr] 445 |     pub fn all(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `append`
[INFO] [stderr]    --> src/bitvec.rs:490:5
[INFO] [stderr]     |
[INFO] [stderr] 490 |     pub fn append(&mut self, other: &mut Self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `split_off`
[INFO] [stderr]    --> src/bitvec.rs:533:5
[INFO] [stderr]     |
[INFO] [stderr] 533 |     pub fn split_off(&mut self, at: usize) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `none`
[INFO] [stderr]    --> src/bitvec.rs:586:5
[INFO] [stderr]     |
[INFO] [stderr] 586 |     pub fn none(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `any`
[INFO] [stderr]    --> src/bitvec.rs:605:5
[INFO] [stderr]     |
[INFO] [stderr] 605 |     pub fn any(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `eq_vec`
[INFO] [stderr]    --> src/bitvec.rs:673:5
[INFO] [stderr]     |
[INFO] [stderr] 673 |     pub fn eq_vec(&self, v: &[bool]) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `truncate`
[INFO] [stderr]    --> src/bitvec.rs:693:5
[INFO] [stderr]     |
[INFO] [stderr] 693 |     pub fn truncate(&mut self, len: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reserve_exact`
[INFO] [stderr]    --> src/bitvec.rs:750:5
[INFO] [stderr]     |
[INFO] [stderr] 750 |     pub fn reserve_exact(&mut self, additional: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `grow`
[INFO] [stderr]    --> src/bitvec.rs:793:5
[INFO] [stderr]     |
[INFO] [stderr] 793 |     pub fn grow(&mut self, n: usize, value: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop`
[INFO] [stderr]    --> src/bitvec.rs:844:5
[INFO] [stderr]     |
[INFO] [stderr] 844 |     pub fn pop(&mut self) -> Option<bool> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]    --> src/bitvec.rs:892:5
[INFO] [stderr]     |
[INFO] [stderr] 892 |     pub fn is_empty(&self) -> bool { self.len() == 0 }
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clear`
[INFO] [stderr]    --> src/bitvec.rs:897:5
[INFO] [stderr]     |
[INFO] [stderr] 897 |     pub fn clear(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `MutBlocks`
[INFO] [stderr]   --> src/bitvec.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | type MutBlocks<'a> = slice::IterMut<'a, u32>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `MatchWords`
[INFO] [stderr]   --> src/bitvec.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | type MatchWords<'a> = Chain<Enumerate<Blocks<'a>>, Skip<Take<Enumerate<Repeat<u32>>>>>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mask_for_bits`
[INFO] [stderr]   --> src/bitvec.rs:69:1
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn mask_for_bits(bits: usize) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `process`
[INFO] [stderr]   --> src/bitvec.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn process<F>(&mut self, other: &BitVec, mut op: F) -> bool where F: FnMut(u32, u32) -> u32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `blocks_mut`
[INFO] [stderr]   --> src/bitvec.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     fn blocks_mut(&mut self) -> MutBlocks {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_fn`
[INFO] [stderr]    --> src/bitvec.rs:225:5
[INFO] [stderr]     |
[INFO] [stderr] 225 |     pub fn from_fn<F>(len: usize, mut f: F) -> BitVec where F: FnMut(usize) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_all`
[INFO] [stderr]    --> src/bitvec.rs:305:5
[INFO] [stderr]     |
[INFO] [stderr] 305 |     pub fn set_all(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `negate`
[INFO] [stderr]    --> src/bitvec.rs:326:5
[INFO] [stderr]     |
[INFO] [stderr] 326 |     pub fn negate(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `union`
[INFO] [stderr]    --> src/bitvec.rs:358:5
[INFO] [stderr]     |
[INFO] [stderr] 358 |     pub fn union(&mut self, other: &BitVec) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `intersect`
[INFO] [stderr]    --> src/bitvec.rs:389:5
[INFO] [stderr]     |
[INFO] [stderr] 389 |     pub fn intersect(&mut self, other: &BitVec) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `difference`
[INFO] [stderr]    --> src/bitvec.rs:427:5
[INFO] [stderr]     |
[INFO] [stderr] 427 |     pub fn difference(&mut self, other: &BitVec) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `all`
[INFO] [stderr]    --> src/bitvec.rs:445:5
[INFO] [stderr]     |
[INFO] [stderr] 445 |     pub fn all(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `append`
[INFO] [stderr]    --> src/bitvec.rs:490:5
[INFO] [stderr]     |
[INFO] [stderr] 490 |     pub fn append(&mut self, other: &mut Self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `split_off`
[INFO] [stderr]    --> src/bitvec.rs:533:5
[INFO] [stderr]     |
[INFO] [stderr] 533 |     pub fn split_off(&mut self, at: usize) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `none`
[INFO] [stderr]    --> src/bitvec.rs:586:5
[INFO] [stderr]     |
[INFO] [stderr] 586 |     pub fn none(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `any`
[INFO] [stderr]    --> src/bitvec.rs:605:5
[INFO] [stderr]     |
[INFO] [stderr] 605 |     pub fn any(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `eq_vec`
[INFO] [stderr]    --> src/bitvec.rs:673:5
[INFO] [stderr]     |
[INFO] [stderr] 673 |     pub fn eq_vec(&self, v: &[bool]) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `truncate`
[INFO] [stderr]    --> src/bitvec.rs:693:5
[INFO] [stderr]     |
[INFO] [stderr] 693 |     pub fn truncate(&mut self, len: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reserve_exact`
[INFO] [stderr]    --> src/bitvec.rs:750:5
[INFO] [stderr]     |
[INFO] [stderr] 750 |     pub fn reserve_exact(&mut self, additional: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `grow`
[INFO] [stderr]    --> src/bitvec.rs:793:5
[INFO] [stderr]     |
[INFO] [stderr] 793 |     pub fn grow(&mut self, n: usize, value: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop`
[INFO] [stderr]    --> src/bitvec.rs:844:5
[INFO] [stderr]     |
[INFO] [stderr] 844 |     pub fn pop(&mut self) -> Option<bool> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]    --> src/bitvec.rs:892:5
[INFO] [stderr]     |
[INFO] [stderr] 892 |     pub fn is_empty(&self) -> bool { self.len() == 0 }
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clear`
[INFO] [stderr]    --> src/bitvec.rs:897:5
[INFO] [stderr]     |
[INFO] [stderr] 897 |     pub fn clear(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `"docker" "inspect" "69c8b33065ddfda2c5b1650d393f0982cedc67d2c88b94b242fefd253ccfc1db"`
[INFO] running `"docker" "rm" "-f" "69c8b33065ddfda2c5b1650d393f0982cedc67d2c88b94b242fefd253ccfc1db"`
[INFO] [stdout] 69c8b33065ddfda2c5b1650d393f0982cedc67d2c88b94b242fefd253ccfc1db