[INFO] crate tinyset 0.3.5 is already in cache
[INFO] extracting crate tinyset 0.3.5 into work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/tinyset/0.3.5
[INFO] extracting crate tinyset 0.3.5 into work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/tinyset/0.3.5
[INFO] validating manifest of tinyset-0.3.5 on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tinyset-0.3.5 on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tinyset-0.3.5
[INFO] finished frobbing tinyset-0.3.5
[INFO] frobbed toml for tinyset-0.3.5 written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/tinyset/0.3.5/Cargo.toml
[INFO] started frobbing tinyset-0.3.5
[INFO] finished frobbing tinyset-0.3.5
[INFO] frobbed toml for tinyset-0.3.5 written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/tinyset/0.3.5/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tinyset-0.3.5 against master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-4/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/tinyset/0.3.5:/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" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4b555bceb8408e707294341c97284c38788c35dde576dfaab1dcb6aefb9abe9f
[INFO] running `"docker" "start" "-a" "4b555bceb8408e707294341c97284c38788c35dde576dfaab1dcb6aefb9abe9f"`
[INFO] [stderr]     Checking tinyset v0.3.5 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/set.rs:71:44
[INFO] [stderr]    |
[INFO] [stderr] 71 |         Set { inner: SS::Small(0, unsafe { std::mem::uninitialized() }) }
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1102:56
[INFO] [stderr]      |
[INFO] [stderr] 1102 |                                                unsafe {std::mem::uninitialized()}))
[INFO] [stderr]      |                                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1105:63
[INFO] [stderr]      |
[INFO] [stderr] 1105 |                                                       unsafe {std::mem::uninitialized()});
[INFO] [stderr]      |                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1131:56
[INFO] [stderr]      |
[INFO] [stderr] 1131 |                                                unsafe {std::mem::uninitialized()}))
[INFO] [stderr]      |                                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1134:63
[INFO] [stderr]      |
[INFO] [stderr] 1134 |                                                       unsafe {std::mem::uninitialized()});
[INFO] [stderr]      |                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1160:56
[INFO] [stderr]      |
[INFO] [stderr] 1160 |                                                unsafe {std::mem::uninitialized()}))
[INFO] [stderr]      |                                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1163:63
[INFO] [stderr]      |
[INFO] [stderr] 1163 |                                                       unsafe {std::mem::uninitialized()});
[INFO] [stderr]      |                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1189:56
[INFO] [stderr]      |
[INFO] [stderr] 1189 |                                                unsafe {std::mem::uninitialized()}))
[INFO] [stderr]      |                                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1192:63
[INFO] [stderr]      |
[INFO] [stderr] 1192 |                                                       unsafe {std::mem::uninitialized()});
[INFO] [stderr]      |                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1219:71
[INFO] [stderr]      |
[INFO] [stderr] 1219 |                                                               unsafe {std::mem::uninitialized()}));
[INFO] [stderr]      |                                                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1247:71
[INFO] [stderr]      |
[INFO] [stderr] 1247 |                                                               unsafe {std::mem::uninitialized()}));
[INFO] [stderr]      |                                                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1275:71
[INFO] [stderr]      |
[INFO] [stderr] 1275 |                                                               unsafe {std::mem::uninitialized()}));
[INFO] [stderr]      |                                                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1303:71
[INFO] [stderr]      |
[INFO] [stderr] 1303 |                                                               unsafe {std::mem::uninitialized()}));
[INFO] [stderr]      |                                                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1333:71
[INFO] [stderr]      |
[INFO] [stderr] 1333 |                                                               unsafe {std::mem::uninitialized()}));
[INFO] [stderr]      |                                                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:3993:45
[INFO] [stderr]      |
[INFO] [stderr] 3993 |             v.push(ManuallyDrop::new(unsafe{std::mem::uninitialized()}));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:4005:45
[INFO] [stderr]      |
[INFO] [stderr] 4005 |             v.push(ManuallyDrop::new(unsafe{std::mem::uninitialized()}));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:4031:74
[INFO] [stderr]      |
[INFO] [stderr] 4031 |                                                 ManuallyDrop::new(unsafe{std::mem::uninitialized()}));
[INFO] [stderr]      |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/set.rs:71:44
[INFO] [stderr]    |
[INFO] [stderr] 71 |         Set { inner: SS::Small(0, unsafe { std::mem::uninitialized() }) }
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1102:56
[INFO] [stderr]      |
[INFO] [stderr] 1102 |                                                unsafe {std::mem::uninitialized()}))
[INFO] [stderr]      |                                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1105:63
[INFO] [stderr]      |
[INFO] [stderr] 1105 |                                                       unsafe {std::mem::uninitialized()});
[INFO] [stderr]      |                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1131:56
[INFO] [stderr]      |
[INFO] [stderr] 1131 |                                                unsafe {std::mem::uninitialized()}))
[INFO] [stderr]      |                                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1134:63
[INFO] [stderr]      |
[INFO] [stderr] 1134 |                                                       unsafe {std::mem::uninitialized()});
[INFO] [stderr]      |                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1160:56
[INFO] [stderr]      |
[INFO] [stderr] 1160 |                                                unsafe {std::mem::uninitialized()}))
[INFO] [stderr]      |                                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1163:63
[INFO] [stderr]      |
[INFO] [stderr] 1163 |                                                       unsafe {std::mem::uninitialized()});
[INFO] [stderr]      |                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1189:56
[INFO] [stderr]      |
[INFO] [stderr] 1189 |                                                unsafe {std::mem::uninitialized()}))
[INFO] [stderr]      |                                                        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1192:63
[INFO] [stderr]      |
[INFO] [stderr] 1192 |                                                       unsafe {std::mem::uninitialized()});
[INFO] [stderr]      |                                                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1219:71
[INFO] [stderr]      |
[INFO] [stderr] 1219 |                                                               unsafe {std::mem::uninitialized()}));
[INFO] [stderr]      |                                                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1247:71
[INFO] [stderr]      |
[INFO] [stderr] 1247 |                                                               unsafe {std::mem::uninitialized()}));
[INFO] [stderr]      |                                                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1275:71
[INFO] [stderr]      |
[INFO] [stderr] 1275 |                                                               unsafe {std::mem::uninitialized()}));
[INFO] [stderr]      |                                                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1303:71
[INFO] [stderr]      |
[INFO] [stderr] 1303 |                                                               unsafe {std::mem::uninitialized()}));
[INFO] [stderr]      |                                                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:1333:71
[INFO] [stderr]      |
[INFO] [stderr] 1333 |                                                               unsafe {std::mem::uninitialized()}));
[INFO] [stderr]      |                                                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:3993:45
[INFO] [stderr]      |
[INFO] [stderr] 3993 |             v.push(ManuallyDrop::new(unsafe{std::mem::uninitialized()}));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:4005:45
[INFO] [stderr]      |
[INFO] [stderr] 4005 |             v.push(ManuallyDrop::new(unsafe{std::mem::uninitialized()}));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]     --> src/u64set.rs:4031:74
[INFO] [stderr]      |
[INFO] [stderr] 4031 |                                                 ManuallyDrop::new(unsafe{std::mem::uninitialized()}));
[INFO] [stderr]      |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/u64set.rs:334:29
[INFO] [stderr]     |
[INFO] [stderr] 334 |                         let mut v = &mut v[..vlen-1];
[INFO] [stderr]     |                             ----^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/u64set.rs:572:25
[INFO] [stderr]     |
[INFO] [stderr] 572 |                     let mut v = &mut v[..vlen-1];
[INFO] [stderr]     |                         ----^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/u64set.rs:731:21
[INFO] [stderr]     |
[INFO] [stderr] 731 |                 let mut keys = &mut keys[..vlen-1];
[INFO] [stderr]     |                     ----^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/u64set.rs:856:21
[INFO] [stderr]     |
[INFO] [stderr] 856 |                 let mut v = &v[..vlen-1];
[INFO] [stderr]     |                     ----^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/u64set.rs:1060:21
[INFO] [stderr]      |
[INFO] [stderr] 1060 |                 let mut v = &mut v[..vlen-1];
[INFO] [stderr]      |                     ----^
[INFO] [stderr]      |                     |
[INFO] [stderr]      |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/u64set.rs:1321:21
[INFO] [stderr]      |
[INFO] [stderr] 1321 |                 let mut keys = &mut keys[..vlen-1];
[INFO] [stderr]      |                     ----^^^^
[INFO] [stderr]      |                     |
[INFO] [stderr]      |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert`
[INFO] [stderr]     --> src/u64set.rs:3059:5
[INFO] [stderr]      |
[INFO] [stderr] 3059 |     fn insert(&mut self, k: u64, v: u64) -> Option<u64> {
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/u64set.rs:334:29
[INFO] [stderr]     |
[INFO] [stderr] 334 |                         let mut v = &mut v[..vlen-1];
[INFO] [stderr]     |                             ----^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/u64set.rs:572:25
[INFO] [stderr]     |
[INFO] [stderr] 572 |                     let mut v = &mut v[..vlen-1];
[INFO] [stderr]     |                         ----^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/u64set.rs:731:21
[INFO] [stderr]     |
[INFO] [stderr] 731 |                 let mut keys = &mut keys[..vlen-1];
[INFO] [stderr]     |                     ----^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/u64set.rs:856:21
[INFO] [stderr]     |
[INFO] [stderr] 856 |                 let mut v = &v[..vlen-1];
[INFO] [stderr]     |                     ----^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/u64set.rs:1060:21
[INFO] [stderr]      |
[INFO] [stderr] 1060 |                 let mut v = &mut v[..vlen-1];
[INFO] [stderr]      |                     ----^
[INFO] [stderr]      |                     |
[INFO] [stderr]      |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/u64set.rs:1321:21
[INFO] [stderr]      |
[INFO] [stderr] 1321 |                 let mut keys = &mut keys[..vlen-1];
[INFO] [stderr]      |                     ----^^^^
[INFO] [stderr]      |                     |
[INFO] [stderr]      |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `"docker" "inspect" "4b555bceb8408e707294341c97284c38788c35dde576dfaab1dcb6aefb9abe9f"`
[INFO] running `"docker" "rm" "-f" "4b555bceb8408e707294341c97284c38788c35dde576dfaab1dcb6aefb9abe9f"`
[INFO] [stdout] 4b555bceb8408e707294341c97284c38788c35dde576dfaab1dcb6aefb9abe9f