[INFO] fetching crate itertools 0.10.0... [INFO] checking itertools-0.10.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744 [INFO] extracting crate itertools 0.10.0 into /workspace/builds/worker-2/source [INFO] validating manifest of crates.io crate itertools 0.10.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate itertools 0.10.0 [INFO] finished tweaking crates.io crate itertools 0.10.0 [INFO] tweaked toml for crates.io crate itertools 0.10.0 written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate crates.io crate itertools 0.10.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a00c547a0d6302127c861b60f5c01c93a180afb66c9bca25d2a037af5900b5cb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "a00c547a0d6302127c861b60f5c01c93a180afb66c9bca25d2a037af5900b5cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a00c547a0d6302127c861b60f5c01c93a180afb66c9bca25d2a037af5900b5cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a00c547a0d6302127c861b60f5c01c93a180afb66c9bca25d2a037af5900b5cb", kill_on_drop: false }` [INFO] [stdout] a00c547a0d6302127c861b60f5c01c93a180afb66c9bca25d2a037af5900b5cb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 595355c60d198d0f8bc5a73de32553c999e8065b854091cf668c9ccde6600961 [INFO] running `Command { std: "docker" "start" "-a" "595355c60d198d0f8bc5a73de32553c999e8065b854091cf668c9ccde6600961", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling libc v0.2.81 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Compiling rayon-core v1.9.0 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling syn v1.0.55 [INFO] [stderr] Checking itoa v0.4.6 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking half v1.6.0 [INFO] [stderr] Checking regex-syntax v0.6.21 [INFO] [stderr] Compiling paste v1.0.4 [INFO] [stderr] Checking permutohedron v0.2.4 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking itertools v0.10.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking serde_cbor v0.11.1 [INFO] [stdout] warning: unnecessary trailing semicolons [INFO] [stdout] --> src/tuple_impl.rs:320:19 [INFO] [stdout] | [INFO] [stdout] 320 | }}; [INFO] [stdout] | ^ help: remove these semicolons [INFO] [stdout] ... [INFO] [stdout] 327 | impl_tuple_collect!(dummy, a, b, c, d, e, f, g, h, i, j, k, l,); [INFO] [stdout] | ---------------------------------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolons [INFO] [stdout] --> src/tuple_impl.rs:320:19 [INFO] [stdout] | [INFO] [stdout] 320 | }}; [INFO] [stdout] | ^ help: remove these semicolons [INFO] [stdout] ... [INFO] [stdout] 327 | impl_tuple_collect!(dummy, a, b, c, d, e, f, g, h, i, j, k, l,); [INFO] [stdout] | ---------------------------------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolons [INFO] [stdout] --> src/tuple_impl.rs:320:19 [INFO] [stdout] | [INFO] [stdout] 320 | }}; [INFO] [stdout] | ^ help: remove these semicolons [INFO] [stdout] ... [INFO] [stdout] 327 | impl_tuple_collect!(dummy, a, b, c, d, e, f, g, h, i, j, k, l,); [INFO] [stdout] | ---------------------------------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolons [INFO] [stdout] --> src/tuple_impl.rs:320:19 [INFO] [stdout] | [INFO] [stdout] 320 | }}; [INFO] [stdout] | ^ help: remove these semicolons [INFO] [stdout] ... [INFO] [stdout] 327 | impl_tuple_collect!(dummy, a, b, c, d, e, f, g, h, i, j, k, l,); [INFO] [stdout] | ---------------------------------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolons [INFO] [stdout] --> src/tuple_impl.rs:320:19 [INFO] [stdout] | [INFO] [stdout] 320 | }}; [INFO] [stdout] | ^ help: remove these semicolons [INFO] [stdout] ... [INFO] [stdout] 327 | impl_tuple_collect!(dummy, a, b, c, d, e, f, g, h, i, j, k, l,); [INFO] [stdout] | ---------------------------------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolons [INFO] [stdout] --> src/tuple_impl.rs:320:19 [INFO] [stdout] | [INFO] [stdout] 320 | }}; [INFO] [stdout] | ^ help: remove these semicolons [INFO] [stdout] ... [INFO] [stdout] 327 | impl_tuple_collect!(dummy, a, b, c, d, e, f, g, h, i, j, k, l,); [INFO] [stdout] | ---------------------------------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolons [INFO] [stdout] --> src/tuple_impl.rs:320:19 [INFO] [stdout] | [INFO] [stdout] 320 | }}; [INFO] [stdout] | ^ help: remove these semicolons [INFO] [stdout] ... [INFO] [stdout] 327 | impl_tuple_collect!(dummy, a, b, c, d, e, f, g, h, i, j, k, l,); [INFO] [stdout] | ---------------------------------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolons [INFO] [stdout] --> src/tuple_impl.rs:320:19 [INFO] [stdout] | [INFO] [stdout] 320 | }}; [INFO] [stdout] | ^ help: remove these semicolons [INFO] [stdout] ... [INFO] [stdout] 327 | impl_tuple_collect!(dummy, a, b, c, d, e, f, g, h, i, j, k, l,); [INFO] [stdout] | ---------------------------------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolons [INFO] [stdout] --> src/tuple_impl.rs:320:19 [INFO] [stdout] | [INFO] [stdout] 320 | }}; [INFO] [stdout] | ^ help: remove these semicolons [INFO] [stdout] ... [INFO] [stdout] 327 | impl_tuple_collect!(dummy, a, b, c, d, e, f, g, h, i, j, k, l,); [INFO] [stdout] | ---------------------------------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolons [INFO] [stdout] --> src/tuple_impl.rs:320:19 [INFO] [stdout] | [INFO] [stdout] 320 | }}; [INFO] [stdout] | ^ help: remove these semicolons [INFO] [stdout] ... [INFO] [stdout] 327 | impl_tuple_collect!(dummy, a, b, c, d, e, f, g, h, i, j, k, l,); [INFO] [stdout] | ---------------------------------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolons [INFO] [stdout] --> src/tuple_impl.rs:320:19 [INFO] [stdout] | [INFO] [stdout] 320 | }}; [INFO] [stdout] | ^ help: remove these semicolons [INFO] [stdout] ... [INFO] [stdout] 327 | impl_tuple_collect!(dummy, a, b, c, d, e, f, g, h, i, j, k, l,); [INFO] [stdout] | ---------------------------------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolons [INFO] [stdout] --> src/tuple_impl.rs:320:19 [INFO] [stdout] | [INFO] [stdout] 320 | }}; [INFO] [stdout] | ^ help: remove these semicolons [INFO] [stdout] ... [INFO] [stdout] 327 | impl_tuple_collect!(dummy, a, b, c, d, e, f, g, h, i, j, k, l,); [INFO] [stdout] | ---------------------------------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling crossbeam-utils v0.8.1 [INFO] [stderr] Compiling memoffset v0.6.1 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling rayon v1.5.0 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking serde_json v1.0.60 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Checking bstr v0.2.14 [INFO] [stderr] Compiling quote v1.0.8 [INFO] [stderr] Checking getrandom v0.1.15 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking regex v1.4.2 [INFO] [stderr] Checking criterion-plot v0.4.3 [INFO] [stderr] Checking crossbeam-epoch v0.9.1 [INFO] [stderr] Checking crossbeam-channel v0.5.0 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Checking tinytemplate v1.1.0 [INFO] [stderr] Checking csv v1.1.5 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking plotters v0.2.15 [INFO] [stderr] Checking quickcheck v0.9.2 [INFO] [stderr] Compiling serde_derive v1.0.118 [INFO] [stderr] Checking criterion v0.3.3 [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 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [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] --> benches/fold_specialization.rs:35:42 [INFO] [stdout] | [INFO] [stdout] 35 | for &x in arr.iter().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 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [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] --> benches/fold_specialization.rs:49:32 [INFO] [stdout] | [INFO] [stdout] 49 | arr.iter().intersperse(&0).fold(0, |acc, x| acc + 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 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [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] --> benches/fold_specialization.rs:60:46 [INFO] [stdout] | [INFO] [stdout] 60 | Unspecialized(arr.iter().intersperse(&0)).fold(0, |acc, x| acc + 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 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [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 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [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 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [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:93:53 [INFO] [stdout] | [INFO] [stdout] 93 | 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 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [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:98:45 [INFO] [stdout] | [INFO] [stdout] 98 | 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 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [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 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [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 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [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 dev [unoptimized + debuginfo] target(s) in 34.00s [INFO] running `Command { std: "docker" "inspect" "595355c60d198d0f8bc5a73de32553c999e8065b854091cf668c9ccde6600961", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "595355c60d198d0f8bc5a73de32553c999e8065b854091cf668c9ccde6600961", kill_on_drop: false }` [INFO] [stdout] 595355c60d198d0f8bc5a73de32553c999e8065b854091cf668c9ccde6600961