[INFO] fetching crate itertools 0.10.0...
[INFO] building itertools-0.10.0 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] extracting crate itertools 0.10.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate itertools 0.10.0 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "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-0/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 142e29fad0d52d5bd98dd4d0f28c503c87bebc37a239af130b0bb527d5d40b4d
[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" "142e29fad0d52d5bd98dd4d0f28c503c87bebc37a239af130b0bb527d5d40b4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "142e29fad0d52d5bd98dd4d0f28c503c87bebc37a239af130b0bb527d5d40b4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "142e29fad0d52d5bd98dd4d0f28c503c87bebc37a239af130b0bb527d5d40b4d", kill_on_drop: false }`
[INFO] [stdout] 142e29fad0d52d5bd98dd4d0f28c503c87bebc37a239af130b0bb527d5d40b4d
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--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] 8e536de703f37650112b01f3ad8d7e157b5b976878b8bac6385e4a679ba251a2
[INFO] running `Command { std: "docker" "start" "-a" "8e536de703f37650112b01f3ad8d7e157b5b976878b8bac6385e4a679ba251a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling itertools v0.10.0 (/opt/rustwide/workdir)
[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] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.43s
[INFO] running `Command { std: "docker" "inspect" "8e536de703f37650112b01f3ad8d7e157b5b976878b8bac6385e4a679ba251a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e536de703f37650112b01f3ad8d7e157b5b976878b8bac6385e4a679ba251a2", kill_on_drop: false }`
[INFO] [stdout] 8e536de703f37650112b01f3ad8d7e157b5b976878b8bac6385e4a679ba251a2
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--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] a6fafed7d26529766d8f4617dcd4db9946aca7834c99b8d598951ef979cab498
[INFO] running `Command { std: "docker" "start" "-a" "a6fafed7d26529766d8f4617dcd4db9946aca7834c99b8d598951ef979cab498", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling const_fn v0.4.4
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling half v1.6.0
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling permutohedron v0.2.4
[INFO] [stderr]    Compiling itertools v0.9.0
[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] [stderr]    Compiling walkdir v2.3.1
[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: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling serde_json v1.0.60
[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]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling tinytemplate v1.1.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling csv v1.1.5
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling plotters v0.2.15
[INFO] [stderr]    Compiling quickcheck v0.9.2
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling itertools v0.10.0 (/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]   = 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 <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]   = 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 <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]    = 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: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 <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]    = 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 <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]    = 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: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]     = 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 <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]     = 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: 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 32.90s
[INFO] running `Command { std: "docker" "inspect" "a6fafed7d26529766d8f4617dcd4db9946aca7834c99b8d598951ef979cab498", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6fafed7d26529766d8f4617dcd4db9946aca7834c99b8d598951ef979cab498", kill_on_drop: false }`
[INFO] [stdout] a6fafed7d26529766d8f4617dcd4db9946aca7834c99b8d598951ef979cab498
