[INFO] fetching crate itertools 0.10.1...
[INFO] testing itertools-0.10.1 against 1.55.0 for beta-1.56-2
[INFO] extracting crate itertools 0.10.1 into /workspace/builds/worker-22/source
[INFO] validating manifest of crates.io crate itertools 0.10.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate itertools 0.10.1
[INFO] finished tweaking crates.io crate itertools 0.10.1
[INFO] tweaked toml for crates.io crate itertools 0.10.1 written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] crate crates.io crate itertools 0.10.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e024b5f07ab3220adf0028a3f8607abf3ebfe7ab5d7f7b43f6b2532265c81a12
[INFO] running `Command { std: "docker" "start" "-a" "e024b5f07ab3220adf0028a3f8607abf3ebfe7ab5d7f7b43f6b2532265c81a12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e024b5f07ab3220adf0028a3f8607abf3ebfe7ab5d7f7b43f6b2532265c81a12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e024b5f07ab3220adf0028a3f8607abf3ebfe7ab5d7f7b43f6b2532265c81a12", kill_on_drop: false }`
[INFO] [stdout] e024b5f07ab3220adf0028a3f8607abf3ebfe7ab5d7f7b43f6b2532265c81a12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3084dfa01480227efcf0eb3c3dda1135bced28c8161067a79f0afe343c03ab5c
[INFO] running `Command { std: "docker" "start" "-a" "3084dfa01480227efcf0eb3c3dda1135bced28c8161067a79f0afe343c03ab5c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling itertools v0.10.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.45s
[INFO] running `Command { std: "docker" "inspect" "3084dfa01480227efcf0eb3c3dda1135bced28c8161067a79f0afe343c03ab5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3084dfa01480227efcf0eb3c3dda1135bced28c8161067a79f0afe343c03ab5c", kill_on_drop: false }`
[INFO] [stdout] 3084dfa01480227efcf0eb3c3dda1135bced28c8161067a79f0afe343c03ab5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82dbe8c3cc6b4f55d40bb3202676870b77656ff932b43553284c48c83ce15983
[INFO] running `Command { std: "docker" "start" "-a" "82dbe8c3cc6b4f55d40bb3202676870b77656ff932b43553284c48c83ce15983", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.96
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling plotters-backend v0.3.0
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling permutohedron v0.2.4
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling plotters-svg v0.3.0
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling cast v0.2.6
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling quickcheck v0.9.2
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling criterion v0.3.4
[INFO] [stderr]    Compiling itertools v0.10.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]  --> tests/fold_specialization.rs:5:27
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut iter = (1..2).intersperse(0);
[INFO] [stdout]   |                           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]   = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]   = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]   = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]  --> tests/fold_specialization.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut iter = (1..3).intersperse(0);
[INFO] [stdout]   |                           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]   = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]   = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]   --> tests/fold_specialization.rs:11:27
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut iter = (1..4).intersperse(0);
[INFO] [stdout]    |                           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> tests/quick.rs:642:29
[INFO] [stdout]     |
[INFO] [stdout] 642 |         correct_size_hint(a.intersperse(x))
[INFO] [stdout]     |                             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> tests/quick.rs:647:38
[INFO] [stdout]     |
[INFO] [stdout] 647 |         for elt in a.iter().cloned().intersperse(x) {
[INFO] [stdout]     |                                      ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> tests/test_std.rs:119:53
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let v: Vec<&str> = xs.iter().map(|x| x.clone()).intersperse(", ").collect();
[INFO] [stdout]     |                                                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> tests/test_std.rs:124:45
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let mut it = ys[..0].iter().map(|x| *x).intersperse(1);
[INFO] [stdout]     |                                             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 38.66s
[INFO] running `Command { std: "docker" "inspect" "82dbe8c3cc6b4f55d40bb3202676870b77656ff932b43553284c48c83ce15983", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82dbe8c3cc6b4f55d40bb3202676870b77656ff932b43553284c48c83ce15983", kill_on_drop: false }`
[INFO] [stdout] 82dbe8c3cc6b4f55d40bb3202676870b77656ff932b43553284c48c83ce15983
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 961f9bfae39e5b3a18be8c8ac721b18a0cf73e3944921b80dbe2b8a5ed4a5b4d
[INFO] running `Command { std: "docker" "start" "-a" "961f9bfae39e5b3a18be8c8ac721b18a0cf73e3944921b80dbe2b8a5ed4a5b4d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]  --> tests/fold_specialization.rs:5:27
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let mut iter = (1..2).intersperse(0);
[INFO] [stderr]   |                           ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stderr]   = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]   = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]   = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]  --> tests/fold_specialization.rs:8:27
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut iter = (1..3).intersperse(0);
[INFO] [stderr]   |                           ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]   = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]   = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]   --> tests/fold_specialization.rs:11:27
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut iter = (1..4).intersperse(0);
[INFO] [stderr]    |                           ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> tests/test_std.rs:119:53
[INFO] [stderr]     |
[INFO] [stderr] 119 |     let v: Vec<&str> = xs.iter().map(|x| x.clone()).intersperse(", ").collect();
[INFO] [stderr]     |                                                     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> tests/test_std.rs:124:45
[INFO] [stderr]     |
[INFO] [stderr] 124 |     let mut it = ys[..0].iter().map(|x| *x).intersperse(1);
[INFO] [stderr]     |                                             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> tests/quick.rs:642:29
[INFO] [stderr]     |
[INFO] [stderr] 642 |         correct_size_hint(a.intersperse(x))
[INFO] [stderr]     |                             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]    --> tests/quick.rs:647:38
[INFO] [stderr]     |
[INFO] [stderr] 647 |         for elt in a.iter().cloned().intersperse(x) {
[INFO] [stderr]     |                                      ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: `itertools` (test "fold_specialization") generated 3 warnings
[INFO] [stderr] warning: `itertools` (test "test_std") generated 2 warnings
[INFO] [stderr] warning: `itertools` (test "quick") generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.35s
[INFO] [stderr]      Running tests/adaptors_no_collect.rs (/opt/rustwide/target/debug/deps/adaptors_no_collect-391a1a65421c4de6)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test combinations_no_collect ... ok
[INFO] [stdout] test combinations_with_replacement_no_collect ... ok
[INFO] [stderr]      Running tests/flatten_ok.rs (/opt/rustwide/target/debug/deps/flatten_ok-bcc5aed14dfb540b)
[INFO] [stdout] test permutations_no_collect ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test flatten_ok_collect_mixed_reverse ... ok
[INFO] [stdout] test flatten_ok_collect_mixed_forward ... ok
[INFO] [stderr]      Running tests/fold_specialization.rs (/opt/rustwide/target/debug/deps/fold_specialization-1d553f93a022ed6b)
[INFO] [stdout] test flatten_ok_collect_ok_forward ... ok
[INFO] [stdout] test flatten_ok_mixed_expected_forward ... ok
[INFO] [stdout] test flatten_ok_collect_ok_reverse ... ok
[INFO] [stdout] test flatten_ok_mixed_expected_reverse ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/macros_hygiene.rs (/opt/rustwide/target/debug/deps/macros_hygiene-8c8738bdf7a8cd42)
[INFO] [stdout] test specialization_intersperse ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test izip_hygiene ... ok
[INFO] [stdout] test iproduct_hygiene ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/merge_join.rs (/opt/rustwide/target/debug/deps/merge_join-43978271f88835e3)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test empty ... ok
[INFO] [stdout] test first_left_then_right ... ok
[INFO] [stdout] test interspersed_left_and_right ... ok
[INFO] [stdout] test first_right_then_left ... ok
[INFO] [stdout] test left_only ... ok
[INFO] [stdout] test right_only ... ok
[INFO] [stdout] test overlapping_left_and_right ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/peeking_take_while.rs (/opt/rustwide/target/debug/deps/peeking_take_while-aca16ae6aec3f28c)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test peeking_take_while_peekable ... ok
[INFO] [stderr]      Running tests/quick.rs (/opt/rustwide/target/debug/deps/quick-f50fffa0742ae30e)
[INFO] [stdout] test peeking_take_while_slice_iter_rev ... ok
[INFO] [stdout] test peeking_take_while_put_back_n ... ok
[INFO] [stdout] test peeking_take_while_slice_iter ... ok
[INFO] [stdout] test peeking_take_while_put_back ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 114 tests
[INFO] [stdout] test collect_tuple_matches_size ... ok
[INFO] [stdout] test at_most_one_i32 ... ok
[INFO] [stdout] test correct_group_map_modulo_key ... ok
[INFO] [stdout] test correct_grouping_map_by_min_max_minmax_order_modulo_key ... ok
[INFO] [stdout] test consistent_grouping_map_with_by ... ok
[INFO] [stdout] test correct_grouping_map_by_minmax_by_key_modulo_key ... ok
[INFO] [stdout] test dedup_via_coalesce ... ok
[INFO] [stdout] test correct_grouping_map_by_collect_modulo_key ... ok
[INFO] [stdout] test correct_grouping_map_by_min_by_modulo_key ... ok
[INFO] [stdout] test equal_chunks_lazy ... ok
[INFO] [stdout] test correct_grouping_map_by_fold_modulo_key ... ok
[INFO] [stdout] test correct_permutations ... ok
[INFO] [stdout] test count_unique ... ok
[INFO] [stdout] test correct_grouping_map_by_max_modulo_key ... ok
[INFO] [stdout] test correct_grouping_map_by_max_by_modulo_key ... ok
[INFO] [stdout] test correct_grouping_map_by_max_by_key_modulo_key ... ok
[INFO] [stdout] test correct_grouping_map_by_sum_modulo_key ... ok
[INFO] [stdout] test correct_grouping_map_by_fold_first_modulo_key ... ok
[INFO] [stdout] test correct_grouping_map_by_minmax_by_modulo_key ... ok
[INFO] [stdout] test correct_grouping_map_by_minmax_modulo_key ... ok
[INFO] [stdout] test correct_grouping_map_by_min_modulo_key ... ok
[INFO] [stdout] test correct_grouping_map_by_min_by_key_modulo_key ... ok
[INFO] [stdout] test equal_intersperse ... ok
[INFO] [stdout] test correct_grouping_map_by_aggregate_modulo_key ... ok
[INFO] [stdout] test counts ... ok
[INFO] [stdout] test equal_combinations_2 ... ok
[INFO] [stdout] test correct_grouping_map_by_product_modulo_key ... ok
[INFO] [stdout] test equal_partition ... ok
[INFO] [stdout] test equal_dedup_by ... ok
[INFO] [stdout] test counts ... ok
[INFO] [stdout] test equal_combinations ... ok
[INFO] [stdout] test equal_tuple_windows_2 ... ok
[INFO] [stdout] test equal_tuple_windows_1 ... ok
[INFO] [stdout] test equal_zip_eq ... ok
[INFO] [stdout] test equal_tuples_1 ... ok
[INFO] [stdout] test fused_interleave_shortest ... ok
[INFO] [stdout] test equal_tuples_4 ... ok
[INFO] [stdout] test exact_interleave_shortest ... ok
[INFO] [stdout] test exact_tuple_buffer ... ok
[INFO] [stdout] test exactly_one_i32 ... ok
[INFO] [stdout] test fuzz_group_by_lazy_1 ... ok
[INFO] [stdout] test fused_unique ... ok
[INFO] [stdout] test equal_tuple_windows_4 ... ok
[INFO] [stdout] test fuzz_group_by_lazy_3 ... ok
[INFO] [stdout] test permutations_k0_yields_once ... ok
[INFO] [stdout] test equal_kmerge ... ok
[INFO] [stdout] test minmax_f64 ... ok
[INFO] [stdout] test fuzz_group_by_lazy_2 ... ok
[INFO] [stdout] test fused_tuple_windows ... ok
[INFO] [stdout] test size_duplicates ... ok
[INFO] [stdout] test size_multipeek ... ok
[INFO] [stdout] test size_pad_tail2 ... ok
[INFO] [stdout] test size_kmerge ... ok
[INFO] [stdout] test fuzz_group_by_lazy_duo ... ok
[INFO] [stdout] test equal_dedup ... ok
[INFO] [stdout] test permutations_lexic_order ... ok
[INFO] [stdout] test size_zip ... ok
[INFO] [stdout] test size_step ... ok
[INFO] [stdout] test equal_step ... ok
[INFO] [stdout] test equal_tuples_2 ... ok
[INFO] [stdout] test size_take_while_ref ... ok
[INFO] [stdout] test size_2_zip_longest ... ok
[INFO] [stdout] test size_put_back ... ok
[INFO] [stdout] test test_double_ended_zip_3 ... ok
[INFO] [stdout] test size_zip_macro ... ok
[INFO] [stdout] test with_position_exact_size_1 ... ok
[INFO] [stdout] test fused_positions ... ok
[INFO] [stdout] test equal_tuples_3 ... ok
[INFO] [stdout] test minmax ... ok
[INFO] [stdout] test equal_step_vec ... ok
[INFO] [stdout] test fused_update ... ok
[INFO] [stdout] test fused_filter_map_ok ... ok
[INFO] [stdout] test size_unique ... ok
[INFO] [stdout] test size_tee ... ok
[INFO] [stdout] test equal_merge ... ok
[INFO] [stdout] test exact_interleave ... ok
[INFO] [stdout] test size_zip_longest ... ok
[INFO] [stdout] test fused_pad_using ... ok
[INFO] [stdout] test exact_repeatn ... ok
[INFO] [stdout] test fused_unique_by ... ok
[INFO] [stdout] test test_double_ended_zip_2 ... ok
[INFO] [stdout] test equal_tuple_windows_3 ... ok
[INFO] [stdout] test fused_filter_ok ... ok
[INFO] [stdout] test size_tee_2 ... ok
[INFO] [stdout] test fused_product ... ok
[INFO] [stdout] test fused_merge ... ok
[INFO] [stdout] test size_merge ... ok
[INFO] [stdout] test tree_fold1_f64 ... ok
[INFO] [stdout] test size_peek_nth ... ok
[INFO] [stdout] test size_dedup ... ok
[INFO] [stdout] test with_position_exact_size_2 ... ok
[INFO] [stdout] test permutations_size ... ok
[INFO] [stdout] test size_pad_tail ... ok
[INFO] [stdout] test size_interleave_shortest ... ok
[INFO] [stdout] test size_interleave ... ok
[INFO] [stdout] test size_intersperse ... ok
[INFO] [stdout] test size_put_backn ... ok
[INFO] [stdout] test size_zip_rc ... ok
[INFO] [stdout] test size_dedup_by ... ok
[INFO] [stdout] test size_product ... ok
[INFO] [stdout] test permutations_count ... ok
[INFO] [stdout] test size_combinations ... ok
[INFO] [stdout] test correct_cartesian_product3 ... ok
[INFO] [stdout] test size_powerset ... ok
[INFO] [stdout] test equal_kmerge_by_lt ... ok
[INFO] [stdout] test equal_kmerge_by_le ... ok
[INFO] [stdout] test size_multi_product ... ok
[INFO] [stdout] test size_product3 ... ok
[INFO] [stdout] test equal_kmerge_by_ge ... ok
[INFO] [stdout] test equal_kmerge_2 ... ok
[INFO] [stdout] test fused_tuple_combination ... ok
[INFO] [stdout] test correct_multi_product3 ... ok
[INFO] [stdout] test fused_combination ... ok
[INFO] [stdout] test fused_combination_with_replacement ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 114 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 14.17s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/specializations.rs (/opt/rustwide/target/debug/deps/specializations-369ae6f2b5e8fc43)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test map_into ... ok
[INFO] [stdout] test put_back_qc ... ok
[INFO] [stdout] test map_ok ... ok
[INFO] [stdout] test merge_join_by_qc ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.62s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_core.rs (/opt/rustwide/target/debug/deps/test_core-1a6c90d11cfcbc08)
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test at_most_one ... ok
[INFO] [stdout] test batching ... ok
[INFO] [stdout] test chain2 ... ok
[INFO] [stdout] test chain_macro ... ok
[INFO] [stdout] test foreach ... ok
[INFO] [stdout] test izip_macro ... ok
[INFO] [stdout] test product_temporary ... ok
[INFO] [stdout] test repeatn ... ok
[INFO] [stdout] test part ... ok
[INFO] [stdout] test merge ... ok
[INFO] [stdout] test step ... ok
[INFO] [stdout] test product2 ... ok
[INFO] [stdout] test izip3 ... ok
[INFO] [stdout] test count_clones ... ok
[INFO] [stdout] test dropping ... ok
[INFO] [stdout] test multizip3 ... ok
[INFO] [stdout] test exactly_one ... ok
[INFO] [stdout] test izip2 ... ok
[INFO] [stdout] test product1 ... ok
[INFO] [stdout] test test_interleave ... ok
[INFO] [stdout] test tree_fold1 ... ok
[INFO] [stdout] test sum1 ... ok
[INFO] [stdout] test test_put_back ... ok
[INFO] [stdout] test write_to ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_std.rs (/opt/rustwide/target/debug/deps/test_std-69414fc81ff955f3)
[INFO] [stdout] 
[INFO] [stdout] running 66 tests
[INFO] [stdout] test all_unique ... ok
[INFO] [stdout] test combinations_zero ... ok
[INFO] [stdout] test dedup_with_count ... ok
[INFO] [stdout] test diff_mismatch ... ok
[INFO] [stdout] test diff_shorter ... ok
[INFO] [stdout] test concat_empty ... ok
[INFO] [stdout] test combinations_with_replacement ... ok
[INFO] [stdout] test dedup_by ... ok
[INFO] [stdout] test dedup_by_with_count ... ok
[INFO] [stdout] test dedup ... ok
[INFO] [stdout] test chunks ... ok
[INFO] [stdout] test all_equal ... ok
[INFO] [stdout] test coalesce ... ok
[INFO] [stdout] test combinations ... ok
[INFO] [stdout] test combinations_of_too_short ... ok
[INFO] [stdout] test diff_longer ... ok
[INFO] [stdout] test concat_non_empty ... ok
[INFO] [stdout] test duplicates_by ... ok
[INFO] [stdout] test fold_while ... ok
[INFO] [stdout] test format ... ok
[INFO] [stdout] test group_by_lazy_2 ... ok
[INFO] [stdout] test group_by_lazy_3 ... ok
[INFO] [stdout] test group_by ... ok
[INFO] [stdout] test exactly_one_question_mark_syntax_works ... ok
[INFO] [stdout] test interleave_shortest ... ok
[INFO] [stdout] test duplicates ... ok
[INFO] [stdout] test kmerge_2 ... ok
[INFO] [stdout] test kmerge ... ok
[INFO] [stdout] test intersperse ... ok
[INFO] [stdout] test join ... ok
[INFO] [stdout] test k_smallest_sort_u16 ... ok
[INFO] [stdout] test kmerge_empty_size_hint ... ok
[INFO] [stdout] test merge_by_btree ... ok
[INFO] [stdout] test kmerge_empty ... ok
[INFO] [stdout] test minmax ... ok
[INFO] [stdout] test k_smallest_range ... ok
[INFO] [stdout] test merge_by ... ok
[INFO] [stdout] test pad_using ... ok
[INFO] [stdout] test kmerge_size_hint ... ok
[INFO] [stdout] test unique ... ok
[INFO] [stdout] test unique_by ... ok
[INFO] [stdout] test trait_pointers ... ok
[INFO] [stdout] test while_some ... ok
[INFO] [stdout] test tree_fold1 ... ok
[INFO] [stdout] test test_peek_nth_peeking_next ... ok
[INFO] [stdout] test product3 ... ok
[INFO] [stdout] test tee ... ok
[INFO] [stdout] test sorted_unstable_by ... ok
[INFO] [stdout] test permutations_zero ... ok
[INFO] [stdout] test test_rciter ... ok
[INFO] [stdout] test test_multipeek_reset ... ok
[INFO] [stdout] test test_multipeek_peeking_next ... ok
[INFO] [stdout] test test_put_back_n ... ok
[INFO] [stdout] test sorted_by ... ok
[INFO] [stdout] test test_multipeek ... ok
[INFO] [stdout] test test_peek_nth ... ok
[INFO] [stdout] test k_smallest_sort_i16 ... ok
[INFO] [stdout] test sorted_by_key ... ok
[INFO] [stdout] test k_smallest_sort_i64 ... ok
[INFO] [stdout] test sorted_unstable_by_key ... ok
[INFO] [stdout] test k_smallest_sort_u64 ... ok
[INFO] [stdout] test k_smallest_sort_i8 ... ok
[INFO] [stdout] test k_smallest_sort_i32 ... ok
[INFO] [stdout] test k_smallest_sort_u8 ... ok
[INFO] [stdout] test k_smallest_sort_u32 ... ok
[INFO] [stdout] test powerset ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 66 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.33s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/tuples.rs (/opt/rustwide/target/debug/deps/tuples-01cc83a9cfd79114)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test collect_tuple ... ok
[INFO] [stdout] test next_tuple ... ok
[INFO] [stdout] test tuple_windows ... ok
[INFO] [stdout] test tuples ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/zip.rs (/opt/rustwide/target/debug/deps/zip-7c2d99e173b261b2)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test test_double_ended_zip_longest ... ok
[INFO] [stdout] test test_double_ended_zip ... ok
[INFO] [stdout] test test_zip_longest_size_hint ... ok
[INFO] [stdout] test zip_longest_fused ... ok
[INFO] [stdout] test zip_eq_panic1 - should panic ... ok
[INFO] [stdout] test zip_eq_panic2 - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests itertools
[INFO] [stdout] 
[INFO] [stdout] running 151 tests
[INFO] [stdout] test src/lib.rs - Itertools::fold_ok (line 2159) ... ignored
[INFO] [stdout] test src/adaptors/mod.rs - adaptors::merge (line 502) ... ok
[INFO] [stdout] test src/free.rs - free::fold (line 130) ... ok
[INFO] [stdout] test src/free.rs - free::cloned (line 114) ... ok
[INFO] [stdout] test src/free.rs - free::max (line 178) ... ok
[INFO] [stdout] test src/lib.rs - assert_equal (line 3443) ... ignored
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name itertools --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern criterion=/opt/rustwide/target/debug/deps/libcriterion-c68f65b852fbb8d1.rlib --extern either=/opt/rustwide/target/debug/deps/libeither-86164c251fc3f461.rlib --extern itertools=/opt/rustwide/target/debug/deps/libitertools-56a0b1990e2a1638.rlib --extern paste=/opt/rustwide/target/debug/deps/libpaste-b66aa8d00e9b66d0.so --extern permutohedron=/opt/rustwide/target/debug/deps/libpermutohedron-68274bc2c62fbc53.rlib --extern quickcheck=/opt/rustwide/target/debug/deps/libquickcheck-b4383edd67592aaf.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-154aaf159a4d4bab.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="use_alloc"' --cfg 'feature="use_std"' --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "961f9bfae39e5b3a18be8c8ac721b18a0cf73e3944921b80dbe2b8a5ed4a5b4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "961f9bfae39e5b3a18be8c8ac721b18a0cf73e3944921b80dbe2b8a5ed4a5b4d", kill_on_drop: false }`
[INFO] [stdout] 961f9bfae39e5b3a18be8c8ac721b18a0cf73e3944921b80dbe2b8a5ed4a5b4d