[INFO] fetching crate arc-buffer 0.1.0... [INFO] checking arc-buffer-0.1.0 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1 [INFO] extracting crate arc-buffer 0.1.0 into /workspace/builds/worker-1-tc2/source [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-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate arc-buffer 0.1.0 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 1 package to latest compatible version [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1dbbf91eb95165ccf1cf92c90d7e4da5d9b89447f78cedda9657e3f451dd9f8f [INFO] running `Command { std: "docker" "start" "-a" "1dbbf91eb95165ccf1cf92c90d7e4da5d9b89447f78cedda9657e3f451dd9f8f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1dbbf91eb95165ccf1cf92c90d7e4da5d9b89447f78cedda9657e3f451dd9f8f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1dbbf91eb95165ccf1cf92c90d7e4da5d9b89447f78cedda9657e3f451dd9f8f", kill_on_drop: false }` [INFO] [stdout] 1dbbf91eb95165ccf1cf92c90d7e4da5d9b89447f78cedda9657e3f451dd9f8f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] affb21f74ab96868d4f0534e6487107df79244fc31c92b214f51317eba9bc906 [INFO] running `Command { std: "docker" "start" "-a" "affb21f74ab96868d4f0534e6487107df79244fc31c92b214f51317eba9bc906", 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: `#[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] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 397 - core::mem::forget(vals); [INFO] [stdout] 397 + let _ = vals; [INFO] [stdout] | [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 = arc_buf![]; [INFO] [stdout] | ---------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 397 - core::mem::forget(vals); [INFO] [stdout] 397 + let _ = vals; [INFO] [stdout] | [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: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 397 - core::mem::forget(vals); [INFO] [stdout] 397 + let _ = vals; [INFO] [stdout] | [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: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 397 - core::mem::forget(vals); [INFO] [stdout] 397 + let _ = vals; [INFO] [stdout] | [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: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 397 - core::mem::forget(vals); [INFO] [stdout] 397 + let _ = vals; [INFO] [stdout] | [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: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 397 - core::mem::forget(vals); [INFO] [stdout] 397 + let _ = vals; [INFO] [stdout] | [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: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 397 - core::mem::forget(vals); [INFO] [stdout] 397 + let _ = vals; [INFO] [stdout] | [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: this warning originates in the macro `arc_buf` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 397 - core::mem::forget(vals); [INFO] [stdout] 397 + let _ = vals; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `MaybeUninit::::new` that must be used [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] | |_____^ [INFO] [stdout] | [INFO] [stdout] = note: use `forget` to avoid running Drop code [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 110 | let _ = parallel! { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `MaybeUninit::::new` that must be used [INFO] [stdout] --> src/test/utils.rs:87:5 [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] | |_____^ [INFO] [stdout] | [INFO] [stdout] = note: use `forget` to avoid running Drop code [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 87 | let _ = parallel! { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s [INFO] running `Command { std: "docker" "inspect" "affb21f74ab96868d4f0534e6487107df79244fc31c92b214f51317eba9bc906", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "affb21f74ab96868d4f0534e6487107df79244fc31c92b214f51317eba9bc906", kill_on_drop: false }` [INFO] [stdout] affb21f74ab96868d4f0534e6487107df79244fc31c92b214f51317eba9bc906