[INFO] fetching crate arc-buffer 0.1.0...
[INFO] checking arc-buffer-0.1.0 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] extracting crate arc-buffer 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate arc-buffer 0.1.0 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arc-buffer 0.1.0
[INFO] finished tweaking crates.io crate arc-buffer 0.1.0
[INFO] tweaked toml for crates.io crate arc-buffer 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded header-slice v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68118b48a88f1f10e29c7e2215779d03a11d97c7ed1d666fdba346c77304aba5
[INFO] running `Command { std: "docker" "start" "-a" "68118b48a88f1f10e29c7e2215779d03a11d97c7ed1d666fdba346c77304aba5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68118b48a88f1f10e29c7e2215779d03a11d97c7ed1d666fdba346c77304aba5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68118b48a88f1f10e29c7e2215779d03a11d97c7ed1d666fdba346c77304aba5", kill_on_drop: false }`
[INFO] [stdout] 68118b48a88f1f10e29c7e2215779d03a11d97c7ed1d666fdba346c77304aba5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d497abef600027b1e622747e7d7451cbf8947336d43ddc3a35417b556968f516
[INFO] running `Command { std: "docker" "start" "-a" "d497abef600027b1e622747e7d7451cbf8947336d43ddc3a35417b556968f516", kill_on_drop: false }`
[INFO] [stderr]     Checking header-slice v0.1.3
[INFO] [stderr]     Checking arc-buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 4]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/create.rs:5:13
[INFO] [stdout]     |
[INFO] [stdout] 5   |     let v = arc_buf![1, 2, 3, 4];
[INFO] [stdout]     |             -------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: `#[warn(forgetting_copy_types)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 0]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/create.rs:11:29
[INFO] [stdout]     |
[INFO] [stdout] 11  |     let v: ArcBuffer<i32> = arc_buf![];
[INFO] [stdout]     |                             ---------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 3]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:35:30
[INFO] [stdout]     |
[INFO] [stdout] 35  |     let buf = with_drop_hook(arc_buf![1, 2, 3], &DROPPED);
[INFO] [stdout]     |                              ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 3]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:45:31
[INFO] [stdout]     |
[INFO] [stdout] 45  |     let buf1 = with_drop_hook(arc_buf![1, 2, 3], &DROPPED);
[INFO] [stdout]     |                               ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 3]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:58:31
[INFO] [stdout]     |
[INFO] [stdout] 58  |     let buf1 = with_drop_hook(arc_buf![1, 2, 3], &DROPPED);
[INFO] [stdout]     |                               ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 3]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:71:31
[INFO] [stdout]     |
[INFO] [stdout] 71  |     let buf1 = with_drop_hook(arc_buf![1, 2, 3], &D1);
[INFO] [stdout]     |                               ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 3]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:89:35
[INFO] [stdout]     |
[INFO] [stdout] 89  |     let mut buf1 = with_drop_hook(arc_buf![1, 2, 3], &D1);
[INFO] [stdout]     |                                   ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 4]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:107:30
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let buf = with_drop_hook(arc_buf![1, 2, 3, 4], &D1);
[INFO] [stdout]     |                              -------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `MaybeUninit::<T>::new` that must be used
[INFO] [stdout]    --> src/test/utils.rs:50:35
[INFO] [stdout]     |
[INFO] [stdout] 50  |                           $(*$v =)? core::mem::MaybeUninit::new($f);
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 | /     parallel! {
[INFO] [stdout] 111 | |         [clone mut buf] {
[INFO] [stdout] 112 | |             buf.push(4);
[INFO] [stdout] 113 | |             set_drop_hook(&mut buf, &D2);
[INFO] [stdout] ...   |
[INFO] [stdout] 126 | |         };
[INFO] [stdout] 127 | |     }
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `forget` to avoid running Drop code
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `parallel` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 50  |                         $(*$v =)? let _ = core::mem::MaybeUninit::new($f);
[INFO] [stdout]     |                                   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `MaybeUninit::<T>::new` that must be used
[INFO] [stdout]   --> src/test/utils.rs:50:35
[INFO] [stdout]    |
[INFO] [stdout] 50 |                           $(*$v =)? core::mem::MaybeUninit::new($f);
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 87 | /     parallel! {
[INFO] [stdout] 88 | |        let x <- [clone a] { Q(a) };
[INFO] [stdout] 89 | |        let y <- [ref b] { Q(*b) };
[INFO] [stdout] 90 | |        {};
[INFO] [stdout] 91 | |     };
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `forget` to avoid running Drop code
[INFO] [stdout]    = note: this warning originates in the macro `parallel` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 50 |                         $(*$v =)? let _ = core::mem::MaybeUninit::new($f);
[INFO] [stdout]    |                                   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "d497abef600027b1e622747e7d7451cbf8947336d43ddc3a35417b556968f516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d497abef600027b1e622747e7d7451cbf8947336d43ddc3a35417b556968f516", kill_on_drop: false }`
[INFO] [stdout] d497abef600027b1e622747e7d7451cbf8947336d43ddc3a35417b556968f516
[INFO] checking arc-buffer-0.1.0 against try#7622c0f807a4e13c4db886a1681bf343795692df+rustflags=-Dnon_local_definitions for pr-120393
[INFO] extracting crate arc-buffer 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate arc-buffer 0.1.0 on toolchain 7622c0f807a4e13c4db886a1681bf343795692df
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arc-buffer 0.1.0
[INFO] finished tweaking crates.io crate arc-buffer 0.1.0
[INFO] tweaked toml for crates.io crate arc-buffer 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf779e22e4724cd33321c29b216a8765142cd99780aa80f2357c7c61020d3e57
[INFO] running `Command { std: "docker" "start" "-a" "cf779e22e4724cd33321c29b216a8765142cd99780aa80f2357c7c61020d3e57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf779e22e4724cd33321c29b216a8765142cd99780aa80f2357c7c61020d3e57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf779e22e4724cd33321c29b216a8765142cd99780aa80f2357c7c61020d3e57", kill_on_drop: false }`
[INFO] [stdout] cf779e22e4724cd33321c29b216a8765142cd99780aa80f2357c7c61020d3e57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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 -Dnon_local_definitions" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c6faa354544a6e126c0c59c6ecb812fbd79aec7c8fdf1cdf861e2750923b027
[INFO] running `Command { std: "docker" "start" "-a" "0c6faa354544a6e126c0c59c6ecb812fbd79aec7c8fdf1cdf861e2750923b027", kill_on_drop: false }`
[INFO] [stderr]     Checking header-slice v0.1.3
[INFO] [stderr]     Checking arc-buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 4]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/create.rs:5:13
[INFO] [stdout]     |
[INFO] [stdout] 5   |     let v = arc_buf![1, 2, 3, 4];
[INFO] [stdout]     |             -------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: `#[warn(forgetting_copy_types)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 0]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/create.rs:11:29
[INFO] [stdout]     |
[INFO] [stdout] 11  |     let v: ArcBuffer<i32> = arc_buf![];
[INFO] [stdout]     |                             ---------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 3]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:35:30
[INFO] [stdout]     |
[INFO] [stdout] 35  |     let buf = with_drop_hook(arc_buf![1, 2, 3], &DROPPED);
[INFO] [stdout]     |                              ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 3]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:45:31
[INFO] [stdout]     |
[INFO] [stdout] 45  |     let buf1 = with_drop_hook(arc_buf![1, 2, 3], &DROPPED);
[INFO] [stdout]     |                               ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 3]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:58:31
[INFO] [stdout]     |
[INFO] [stdout] 58  |     let buf1 = with_drop_hook(arc_buf![1, 2, 3], &DROPPED);
[INFO] [stdout]     |                               ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 3]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:71:31
[INFO] [stdout]     |
[INFO] [stdout] 71  |     let buf1 = with_drop_hook(arc_buf![1, 2, 3], &D1);
[INFO] [stdout]     |                               ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 3]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:89:35
[INFO] [stdout]     |
[INFO] [stdout] 89  |     let mut buf1 = with_drop_hook(arc_buf![1, 2, 3], &D1);
[INFO] [stdout]     |                                   ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/buf.rs:397:9
[INFO] [stdout]     |
[INFO] [stdout] 397 |         core::mem::forget(vals);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           argument has type `[i32; 4]`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:107:30
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let buf = with_drop_hook(arc_buf![1, 2, 3, 4], &D1);
[INFO] [stdout]     |                              -------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `MaybeUninit::<T>::new` that must be used
[INFO] [stdout]    --> src/test/utils.rs:50:35
[INFO] [stdout]     |
[INFO] [stdout] 50  |                           $(*$v =)? core::mem::MaybeUninit::new($f);
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/test/drop.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 | /     parallel! {
[INFO] [stdout] 111 | |         [clone mut buf] {
[INFO] [stdout] 112 | |             buf.push(4);
[INFO] [stdout] 113 | |             set_drop_hook(&mut buf, &D2);
[INFO] [stdout] ...   |
[INFO] [stdout] 126 | |         };
[INFO] [stdout] 127 | |     }
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `forget` to avoid running Drop code
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `parallel` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 50  |                         $(*$v =)? let _ = core::mem::MaybeUninit::new($f);
[INFO] [stdout]     |                                   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `MaybeUninit::<T>::new` that must be used
[INFO] [stdout]   --> src/test/utils.rs:50:35
[INFO] [stdout]    |
[INFO] [stdout] 50 |                           $(*$v =)? core::mem::MaybeUninit::new($f);
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 87 | /     parallel! {
[INFO] [stdout] 88 | |        let x <- [clone a] { Q(a) };
[INFO] [stdout] 89 | |        let y <- [ref b] { Q(*b) };
[INFO] [stdout] 90 | |        {};
[INFO] [stdout] 91 | |     };
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `forget` to avoid running Drop code
[INFO] [stdout]    = note: this warning originates in the macro `parallel` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 50 |                         $(*$v =)? let _ = core::mem::MaybeUninit::new($f);
[INFO] [stdout]    |                                   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "0c6faa354544a6e126c0c59c6ecb812fbd79aec7c8fdf1cdf861e2750923b027", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c6faa354544a6e126c0c59c6ecb812fbd79aec7c8fdf1cdf861e2750923b027", kill_on_drop: false }`
[INFO] [stdout] 0c6faa354544a6e126c0c59c6ecb812fbd79aec7c8fdf1cdf861e2750923b027
