[INFO] updating cached repository davidpeklak/rust-algorithms
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/davidpeklak/rust-algorithms
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/davidpeklak/rust-algorithms" "work/ex/pr-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/gh/davidpeklak/rust-algorithms"`
[INFO] [stderr] Cloning into 'work/ex/pr-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/gh/davidpeklak/rust-algorithms'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/davidpeklak/rust-algorithms" "work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/gh/davidpeklak/rust-algorithms"`
[INFO] [stderr] Cloning into 'work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/gh/davidpeklak/rust-algorithms'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 610041d6ef7b0d2a6a918bd7139098b97596d6f8
[INFO] sha for GitHub repo davidpeklak/rust-algorithms: 610041d6ef7b0d2a6a918bd7139098b97596d6f8
[INFO] validating manifest of davidpeklak/rust-algorithms on toolchain master#7840a0b753a065a41999f1fb6028f67d33e3fdd5
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+7840a0b753a065a41999f1fb6028f67d33e3fdd5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of davidpeklak/rust-algorithms on toolchain try#6a9f0b6cc40687e25f9d772e3b10bab335c63853
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+6a9f0b6cc40687e25f9d772e3b10bab335c63853-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing davidpeklak/rust-algorithms
[INFO] finished frobbing davidpeklak/rust-algorithms
[INFO] frobbed toml for davidpeklak/rust-algorithms written to work/ex/pr-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/gh/davidpeklak/rust-algorithms/Cargo.toml
[INFO] started frobbing davidpeklak/rust-algorithms
[INFO] finished frobbing davidpeklak/rust-algorithms
[INFO] frobbed toml for davidpeklak/rust-algorithms written to work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/gh/davidpeklak/rust-algorithms/Cargo.toml
[INFO] crate davidpeklak/rust-algorithms already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+7840a0b753a065a41999f1fb6028f67d33e3fdd5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+6a9f0b6cc40687e25f9d772e3b10bab335c63853-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking davidpeklak/rust-algorithms against try#6a9f0b6cc40687e25f9d772e3b10bab335c63853 for pr-60466
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60466/worker-1/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/gh/davidpeklak/rust-algorithms:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+6a9f0b6cc40687e25f9d772e3b10bab335c63853-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 140600aa4a488f1c0976bc104300d52f6633424377e18a5dfba5d5976bd9136c
[INFO] running `"docker" "start" "-a" "140600aa4a488f1c0976bc104300d52f6633424377e18a5dfba5d5976bd9136c"`
[INFO] [stderr]     Checking stopwatch v0.0.7
[INFO] [stderr]     Checking algorithms v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:29:41
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=Self::Item>>;
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=Self::Item>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     l: &'a LinkedList<Item=T>
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:56:41
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:65:28
[INFO] [stderr]    |
[INFO] [stderr] 65 | impl<T> LinkedList for Box<LinkedList<Item=T>> {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:72:38
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn tail<'a>(&'a self) -> Option<&LinkedList<Item=T>> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:88:41
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:29:41
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=Self::Item>>;
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=Self::Item>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     l: &'a LinkedList<Item=T>
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:56:41
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:65:28
[INFO] [stderr]    |
[INFO] [stderr] 65 | impl<T> LinkedList for Box<LinkedList<Item=T>> {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:72:38
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn tail<'a>(&'a self) -> Option<&LinkedList<Item=T>> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/linked_list.rs:88:41
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn tail<'a>(&'a self) -> Option<&'a LinkedList<Item=T>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib/linked_list.rs:134:34
[INFO] [stderr]     |
[INFO] [stderr] 134 |     fn some_linked_list() -> Box<LinkedList<Item=i32>> {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=i32>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib/linked_list.rs:153:41
[INFO] [stderr]     |
[INFO] [stderr] 153 |     fn prepend_some<'a, L>(l: L) -> Box<LinkedList<Item=i32> + 'a>
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn LinkedList<Item=i32> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]   --> tests/performance_heap_sort.rs:21:37
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn run(&mut self, _size: usize, rng: &mut ThreadRng) {
[INFO] [stderr]    |                                     ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.73s
[INFO] running `"docker" "inspect" "140600aa4a488f1c0976bc104300d52f6633424377e18a5dfba5d5976bd9136c"`
[INFO] running `"docker" "rm" "-f" "140600aa4a488f1c0976bc104300d52f6633424377e18a5dfba5d5976bd9136c"`
[INFO] [stdout] 140600aa4a488f1c0976bc104300d52f6633424377e18a5dfba5d5976bd9136c