[INFO] updating cached repository https://github.com/rklaehn/rust-nursery
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2d9cabeafe1b0bb90ccbf54d168bc0376e23c658
[INFO] checking rklaehn/rust-nursery against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frklaehn%2Frust-nursery" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rklaehn/rust-nursery on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rklaehn/rust-nursery
[INFO] finished tweaking git repo https://github.com/rklaehn/rust-nursery
[INFO] tweaked toml for git repo https://github.com/rklaehn/rust-nursery written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/rklaehn/rust-nursery already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e60fbe92060487cdb743818e8c73992b8771c7ecb383a28704cdd8f46a14d432
[INFO] running `"docker" "start" "-a" "e60fbe92060487cdb743818e8c73992b8771c7ecb383a28704cdd8f46a14d432"`
[INFO] [stderr]     Checking sorted-iter v0.1.5
[INFO] [stderr]     Checking testdrop v0.1.2
[INFO] [stderr]     Checking num-complex v0.2.3
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking quickcheck v0.8.5
[INFO] [stderr]     Checking alga v0.9.2
[INFO] [stderr]     Checking vec-collections v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `VecSet`
[INFO] [stderr]  --> src/total_vec_set.rs:1:13
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::{VecSet, VecSet2};
[INFO] [stderr]   |             ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `UnsafeSliceMergeState`
[INFO] [stderr]  --> src/vec_set.rs:6:30
[INFO] [stderr]   |
[INFO] [stderr] 6 |     UnsafeInPlaceMergeState, UnsafeSliceMergeState, VecMergeState, SmallVecInPlaceMergeState,
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/flip_buffer/small_vec_builder.rs:177:57
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let v = std::mem::replace(&mut self.v, unsafe { std::mem::uninitialized() });
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `merge`
[INFO] [stderr]   --> src/merge_state.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn merge<O: MergeOperation<A::Item, B::Item, Self>>(a: &mut SmallVec<A>, b: SmallVec<B>, o: O) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `merge`
[INFO] [stderr]    --> src/merge_state.rs:344:5
[INFO] [stderr]     |
[INFO] [stderr] 344 |     pub fn merge<O: MergeOperation<A, B, Self>>(a: &'a [A], b: &'a [B], o: O) -> SmallVec<Arr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `merge`
[INFO] [stderr]    --> src/merge_state.rs:476:5
[INFO] [stderr]     |
[INFO] [stderr] 476 | /     pub fn merge<O: ShortcutMergeOperation<T, T, Self>>(
[INFO] [stderr] 477 | |         v: &mut Vec<T>,
[INFO] [stderr] 478 | |         an: usize,
[INFO] [stderr] 479 | |         bn: usize,
[INFO] [stderr] ...   |
[INFO] [stderr] 504 | |         }
[INFO] [stderr] 505 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dedup`
[INFO] [stderr]   --> src/dedup.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn dedup<T: Eq>(d: &mut [T], keep: Keep) -> usize {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `single`
[INFO] [stderr]   --> src/radix_tree.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     fn single(key: Vec<K>, value: V) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `filter_map_values`
[INFO] [stderr]   --> src/radix_tree.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn filter_map_values<W>(self, f: &impl Fn(V) -> Option<W>) -> Option<TagTree<K, W>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `inner_join_with`
[INFO] [stderr]    --> src/radix_tree.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn inner_join_with(&self, that: &Self, f: &impl Fn(&V, &V) -> Option<V>) -> Option<Self> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `min`
[INFO] [stderr]    --> src/radix_tree.rs:164:5
[INFO] [stderr]     |
[INFO] [stderr] 164 |     fn min(&self, that: &Self) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `max`
[INFO] [stderr]    --> src/radix_tree.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     fn max(&self, that: &Self) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_range_bounds`
[INFO] [stderr]    --> src/range_set.rs:175:5
[INFO] [stderr]     |
[INFO] [stderr] 175 |     fn from_range_bounds<R: RangeBounds<T>>(r: R) -> std::result::Result<Self, ()> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling quickcheck_macros v0.8.0
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `VecSet`
[INFO] [stderr]  --> src/total_vec_set.rs:1:13
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::{VecSet, VecSet2};
[INFO] [stderr]   |             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/flip_buffer/small_vec_builder.rs:177:57
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let v = std::mem::replace(&mut self.v, unsafe { std::mem::uninitialized() });
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `merge`
[INFO] [stderr]   --> src/merge_state.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn merge<O: MergeOperation<A::Item, B::Item, Self>>(a: &mut SmallVec<A>, b: SmallVec<B>, o: O) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `merge`
[INFO] [stderr]    --> src/merge_state.rs:344:5
[INFO] [stderr]     |
[INFO] [stderr] 344 |     pub fn merge<O: MergeOperation<A, B, Self>>(a: &'a [A], b: &'a [B], o: O) -> SmallVec<Arr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_on_failure_unary`
[INFO] [stderr]    --> src/total_vec_set.rs:285:8
[INFO] [stderr]     |
[INFO] [stderr] 285 |     fn print_on_failure_unary<E: Debug, R: Eq + Debug>(x: E, expected: R, actual: R) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dedup`
[INFO] [stderr]   --> src/dedup.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn dedup<T: Eq>(d: &mut [T], keep: Keep) -> usize {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `filter_map_values`
[INFO] [stderr]   --> src/radix_tree.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn filter_map_values<W>(self, f: &impl Fn(V) -> Option<W>) -> Option<TagTree<K, W>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `max`
[INFO] [stderr]    --> src/radix_tree.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     fn max(&self, that: &Self) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.17s
[INFO] running `"docker" "inspect" "e60fbe92060487cdb743818e8c73992b8771c7ecb383a28704cdd8f46a14d432"`
[INFO] running `"docker" "rm" "-f" "e60fbe92060487cdb743818e8c73992b8771c7ecb383a28704cdd8f46a14d432"`
[INFO] [stdout] e60fbe92060487cdb743818e8c73992b8771c7ecb383a28704cdd8f46a14d432