[INFO] crate itertools 0.8.1 is already in cache
[INFO] checking itertools-0.8.1 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] extracting crate itertools 0.8.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate itertools 0.8.1 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate itertools 0.8.1
[INFO] finished tweaking crates.io crate itertools 0.8.1
[INFO] tweaked toml for crates.io crate itertools 0.8.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate itertools 0.8.1 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-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" "+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] 3954a10c1916b4a23fa106eab249a40850682a0d9bf1c9a8dafce1fb4231d4aa
[INFO] running `"docker" "start" "-a" "3954a10c1916b4a23fa106eab249a40850682a0d9bf1c9a8dafce1fb4231d4aa"`
[INFO] [stderr]     Checking permutohedron v0.2.4
[INFO] [stderr]     Checking itertools v0.8.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking quickcheck v0.7.2
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/format.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 |             try!(format(fst, &mut |disp: &fmt::Display| disp.fmt(f)));
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/format.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 64 |                     try!(f.write_str(self.sep));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/format.rs:66:17
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 try!(format(elt, &mut |disp: &fmt::Display| disp.fmt(f)));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/format.rs:85:13
[INFO] [stderr]    |
[INFO] [stderr] 85 |             try!(cb(&fst, f));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/format.rs:88:21
[INFO] [stderr]    |
[INFO] [stderr] 88 |                     try!(f.write_str(self.sep));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/format.rs:90:17
[INFO] [stderr]    |
[INFO] [stderr] 90 |                 try!(cb(&elt, f));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:1847:25
[INFO] [stderr]      |
[INFO] [stderr] 1847 |             let mut x = try!(inner0(it, f));
[INFO] [stderr]      |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/format.rs:32:34
[INFO] [stderr]    |
[INFO] [stderr] 32 |           F: FnMut(I::Item, &mut FnMut(&fmt::Display) -> fmt::Result) -> fmt::Result
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&fmt::Display) -> fmt::Result`
[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/format.rs:32:41
[INFO] [stderr]    |
[INFO] [stderr] 32 |           F: FnMut(I::Item, &mut FnMut(&fmt::Display) -> fmt::Result) -> fmt::Result
[INFO] [stderr]    |                                         ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/format.rs:51:34
[INFO] [stderr]    |
[INFO] [stderr] 51 |           F: FnMut(I::Item, &mut FnMut(&fmt::Display) -> fmt::Result) -> fmt::Result
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&fmt::Display) -> fmt::Result`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/format.rs:51:41
[INFO] [stderr]    |
[INFO] [stderr] 51 |           F: FnMut(I::Item, &mut FnMut(&fmt::Display) -> fmt::Result) -> fmt::Result
[INFO] [stderr]    |                                         ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/format.rs:60:43
[INFO] [stderr]    |
[INFO] [stderr] 60 |             try!(format(fst, &mut |disp: &fmt::Display| disp.fmt(f)));
[INFO] [stderr]    |                                           ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/format.rs:66:47
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 try!(format(elt, &mut |disp: &fmt::Display| disp.fmt(f)));
[INFO] [stderr]    |                                               ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1659:41
[INFO] [stderr]      |
[INFO] [stderr] 1659 |               F: FnMut(Self::Item, &mut FnMut(&fmt::Display) -> fmt::Result) -> fmt::Result,
[INFO] [stderr]      |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&fmt::Display) -> fmt::Result`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1659:48
[INFO] [stderr]      |
[INFO] [stderr] 1659 |               F: FnMut(Self::Item, &mut FnMut(&fmt::Display) -> fmt::Result) -> fmt::Result,
[INFO] [stderr]      |                                                ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> benches/fold_specialization.rs:39:31
[INFO] [stderr]    |
[INFO] [stderr] 39 |                 for &x in arr.into_iter().intersperse(&0) {
[INFO] [stderr]    |                               ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> benches/fold_specialization.rs:52:21
[INFO] [stderr]    |
[INFO] [stderr] 52 |                 arr.into_iter().intersperse(&0).fold(0, |acc, x| acc + x)
[INFO] [stderr]    |                     ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> benches/fold_specialization.rs:62:35
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 Unspecialized(arr.into_iter().intersperse(&0)).fold(0, |acc, x| acc + x)
[INFO] [stderr]    |                                   ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `itertools::Permutations`
[INFO] [stderr]   --> benches/bench1.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use itertools::Permutations;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> tests/test_std.rs:201:41
[INFO] [stderr]     |
[INFO] [stderr] 201 |     let mut it = Box::new(0..10) as Box<Iterator<Item=i32>>;
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=i32>`
[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]    --> tests/test_std.rs:206:22
[INFO] [stderr]     |
[INFO] [stderr] 206 |         let jt: &mut Iterator<Item = i32> = &mut *it;
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = i32>`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/iris.rs:47:32
[INFO] [stderr]    |
[INFO] [stderr] 47 |             iris.data[index] = try!(part.parse::<f32>());
[INFO] [stderr]    |                                ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'itertools::Itertools::step': Use std .step_by() instead
[INFO] [stderr]    --> benches/bench1.rs:624:42
[INFO] [stderr]     |
[INFO] [stderr] 624 |         fast_integer_sum(cloned(v.iter().step(2)))
[INFO] [stderr]     |                                          ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'itertools::Itertools::step': Use std .step_by() instead
[INFO] [stderr]    --> benches/bench1.rs:632:42
[INFO] [stderr]     |
[INFO] [stderr] 632 |         fast_integer_sum(cloned(v.iter().step(10)))
[INFO] [stderr]     |                                          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'itertools::Itertools::step': Use std .step_by() instead
[INFO] [stderr]    --> benches/bench1.rs:640:36
[INFO] [stderr]     |
[INFO] [stderr] 640 |         fast_integer_sum(v.clone().step(2))
[INFO] [stderr]     |                                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'itertools::Itertools::step': Use std .step_by() instead
[INFO] [stderr]    --> benches/bench1.rs:648:36
[INFO] [stderr]     |
[INFO] [stderr] 648 |         fast_integer_sum(v.clone().step(10))
[INFO] [stderr]     |                                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'itertools::Itertools::foreach': Use .for_each() instead
[INFO] [stderr]   --> benches/tree_fold1.rs:20:26
[INFO] [stderr]    |
[INFO] [stderr] 20 |         self.enumerate().foreach(|(mut i, mut x)| {
[INFO] [stderr]    |                          ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]    --> benches/bench1.rs:691:21
[INFO] [stderr]     |
[INFO] [stderr] 691 |         for x in xs.into_iter().multi_cartesian_product() {
[INFO] [stderr]     |                     ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]    --> benches/bench1.rs:707:12
[INFO] [stderr]     |
[INFO] [stderr] 707 |         xs.into_iter().multi_cartesian_product().fold((), |(), x| {
[INFO] [stderr]     |            ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/quick.rs:89:29
[INFO] [stderr]    |
[INFO] [stderr] 89 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Self>`
[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]    --> tests/quick.rs:180:29
[INFO] [stderr]     |
[INFO] [stderr] 180 |     fn shrink(&self) -> Box<Iterator<Item=Iter<T, HK>>>
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Iter<T, HK>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> tests/quick.rs:1079:29
[INFO] [stderr]      |
[INFO] [stderr] 1079 |     fn shrink(&self) -> Box<Iterator<Item = Self>> {
[INFO] [stderr]      |                             ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Self>`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.38s
[INFO] running `"docker" "inspect" "3954a10c1916b4a23fa106eab249a40850682a0d9bf1c9a8dafce1fb4231d4aa"`
[INFO] running `"docker" "rm" "-f" "3954a10c1916b4a23fa106eab249a40850682a0d9bf1c9a8dafce1fb4231d4aa"`
[INFO] [stdout] 3954a10c1916b4a23fa106eab249a40850682a0d9bf1c9a8dafce1fb4231d4aa