[INFO] fetching crate vec-collections 0.1.1...
[INFO] checking vec-collections-0.1.1 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate vec-collections 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate vec-collections 0.1.1 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate vec-collections 0.1.1
[INFO] finished tweaking crates.io crate vec-collections 0.1.1
[INFO] tweaked toml for crates.io crate vec-collections 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate vec-collections 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] 35392140438d5d32eb6437ecb394082dad048b8da7b2f664df6a7f3cef9b3440
[INFO] running `"docker" "start" "-a" "35392140438d5d32eb6437ecb394082dad048b8da7b2f664df6a7f3cef9b3440"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking testdrop v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking alga v0.9.2
[INFO] [stderr]     Checking quickcheck v0.8.5
[INFO] [stderr]     Checking vec-collections v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `alga::general::ClosedAdd`
[INFO] [stderr]  --> src/total_vec_seq.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use alga::general::ClosedAdd;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AddAssign`, `Add`
[INFO] [stderr]   --> src/total_vec_seq.rs:15:16
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::ops::{Add, AddAssign};
[INFO] [stderr]    |                ^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `alga::general::AdditiveSemigroup`
[INFO] [stderr]  --> src/vec_seq.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use alga::general::AdditiveSemigroup;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `target_slice`
[INFO] [stderr]   --> src/flip_buffer/mod.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn target_slice(&self) -> &[T] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push`
[INFO] [stderr]   --> src/flip_buffer/mod.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn push(&mut self, value: T, gap: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop_front`
[INFO] [stderr]    --> src/flip_buffer/mod.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn pop_front(&mut self) -> Option<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `into_total`
[INFO] [stderr]   --> src/vec_seq.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn into_total(self, default: T) -> TotalVecSeq<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `OuterJoinWithOp`
[INFO] [stderr]   --> src/vec_map.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 | struct OuterJoinWithOp<F>(F);
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `InPlacePairMergeState`
[INFO] [stderr]   --> src/vec_map.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | type InPlacePairMergeState<'a, K, A, B> = UnsafeInPlaceMergeState<(K, A), (K, B)>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `into_sorted_vec`
[INFO] [stderr]    --> src/vec_map.rs:227:5
[INFO] [stderr]     |
[INFO] [stderr] 227 |     pub(crate) fn into_sorted_vec(self) -> Vec<(K, V)> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reduce`
[INFO] [stderr]  --> src/sonic_reducer.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn reduce<T, I: IntoIterator<Item = T>, F: Fn(&mut T, T)>(iter: I, op: F) -> Option<T> {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SonicReducer`
[INFO] [stderr]   --> src/sonic_reducer.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct SonicReducer<T, F> {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `zero_and_get`
[INFO] [stderr]   --> src/sonic_reducer.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn zero_and_get<T>(a: &mut Option<T>) -> Option<T> {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `adsorb`
[INFO] [stderr]   --> src/sonic_reducer.rs:29:4
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn adsorb<T, F: Fn(&mut T, T)>(op: &F, a: &mut Option<T>, b: Option<T>) -> Option<T> {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reserve`
[INFO] [stderr]   --> src/sonic_reducer.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn reserve(&mut self, index: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reduce_to`
[INFO] [stderr]   --> src/sonic_reducer.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     fn reduce_to(&mut self, level: usize, value: Option<T>) -> Option<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/sonic_reducer.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn add(&mut self, value: Option<T>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `result`
[INFO] [stderr]   --> src/sonic_reducer.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn result(&mut self) -> Option<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[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 `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `alga::general::ClosedAdd`
[INFO] [stderr]  --> src/total_vec_seq.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use alga::general::ClosedAdd;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AddAssign`, `Add`
[INFO] [stderr]   --> src/total_vec_seq.rs:15:16
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::ops::{Add, AddAssign};
[INFO] [stderr]    |                ^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `alga::general::AdditiveSemigroup`
[INFO] [stderr]  --> src/vec_seq.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use alga::general::AdditiveSemigroup;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::test_macros::*`
[INFO] [stderr]    --> src/range_set.rs:483:9
[INFO] [stderr]     |
[INFO] [stderr] 483 |     use crate::test_macros::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::BTreeSet`
[INFO] [stderr]    --> src/range_set.rs:485:9
[INFO] [stderr]     |
[INFO] [stderr] 485 |     use std::collections::BTreeSet;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/vec_map.rs:380:46
[INFO] [stderr]     |
[INFO] [stderr] 380 |             let actual = a.inner_join(&b, |a,b| a.clone());
[INFO] [stderr]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]    --> src/range_set.rs:547:13
[INFO] [stderr]     |
[INFO] [stderr] 547 |         let r: Test = x.bitor(&y);
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `target_slice`
[INFO] [stderr]   --> src/flip_buffer/mod.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn target_slice(&self) -> &[T] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `OuterJoinWithOp`
[INFO] [stderr]   --> src/vec_map.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 | struct OuterJoinWithOp<F>(F);
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `InPlacePairMergeState`
[INFO] [stderr]   --> src/vec_map.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | type InPlacePairMergeState<'a, K, A, B> = UnsafeInPlaceMergeState<(K, A), (K, B)>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `into_sorted_vec`
[INFO] [stderr]    --> src/vec_map.rs:227:5
[INFO] [stderr]     |
[INFO] [stderr] 227 |     pub(crate) fn into_sorted_vec(self) -> Vec<(K, V)> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Elem`
[INFO] [stderr]    --> src/range_set.rs:488:5
[INFO] [stderr]     |
[INFO] [stderr] 488 |     type Elem = i32;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Ref`
[INFO] [stderr]    --> src/range_set.rs:489:5
[INFO] [stderr]     |
[INFO] [stderr] 489 |     type Ref = (Vec<Range<Elem>>, bool);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `union_contains`
[INFO] [stderr]    --> src/range_set.rs:492:8
[INFO] [stderr]     |
[INFO] [stderr] 492 |     fn union_contains(x: &Ref, elem: &Elem) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `intersection_contains`
[INFO] [stderr]    --> src/range_set.rs:497:8
[INFO] [stderr]     |
[INFO] [stderr] 497 |     fn intersection_contains(x: &Ref, elem: &Elem) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sample`
[INFO] [stderr]    --> src/range_set.rs:502:8
[INFO] [stderr]     |
[INFO] [stderr] 502 |     fn sample(x: &Ref) -> Vec<Elem> {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `to_test`
[INFO] [stderr]    --> src/range_set.rs:517:8
[INFO] [stderr]     |
[INFO] [stderr] 517 |     fn to_test(r: &Ref) -> Test {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.74s
[INFO] running `"docker" "inspect" "35392140438d5d32eb6437ecb394082dad048b8da7b2f664df6a7f3cef9b3440"`
[INFO] running `"docker" "rm" "-f" "35392140438d5d32eb6437ecb394082dad048b8da7b2f664df6a7f3cef9b3440"`
[INFO] [stdout] 35392140438d5d32eb6437ecb394082dad048b8da7b2f664df6a7f3cef9b3440