[INFO] fetching crate const-buffer 0.1.2... [INFO] checking const-buffer-0.1.2 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1 [INFO] extracting crate const-buffer 0.1.2 into /workspace/builds/worker-3-tc1/source [INFO] started tweaking crates.io crate const-buffer 0.1.2 [INFO] finished tweaking crates.io crate const-buffer 0.1.2 [INFO] tweaked toml for crates.io crate const-buffer 0.1.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate const-buffer 0.1.2 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 615520cc8be6b40c553a0a5e71b0d577eda07606728d754159f57a9f85476c59 [INFO] running `Command { std: "docker" "start" "-a" "615520cc8be6b40c553a0a5e71b0d577eda07606728d754159f57a9f85476c59", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "615520cc8be6b40c553a0a5e71b0d577eda07606728d754159f57a9f85476c59", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "615520cc8be6b40c553a0a5e71b0d577eda07606728d754159f57a9f85476c59", kill_on_drop: false }` [INFO] [stdout] 615520cc8be6b40c553a0a5e71b0d577eda07606728d754159f57a9f85476c59 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c75471ad56643d05aa8daf6f1b9cd36f762b4334ef3db914dc5f091f8f06baca [INFO] running `Command { std: "docker" "start" "-a" "c75471ad56643d05aa8daf6f1b9cd36f762b4334ef3db914dc5f091f8f06baca", kill_on_drop: false }` [INFO] [stderr] Checking const-buffer v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/lib.rs:70:5 [INFO] [stdout] | [INFO] [stdout] 70 | untagged_unions [INFO] [stdout] | ^^^^^^^^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: removed in 1.64.0; see for more information [INFO] [stdout] = note: unions with `Copy` and `ManuallyDrop` fields are stable; there is no intent to stabilize more [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/lib.rs:70:5 [INFO] [stdout] | [INFO] [stdout] 70 | untagged_unions [INFO] [stdout] | ^^^^^^^^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: removed in 1.64.0; see for more information [INFO] [stdout] = note: unions with `Copy` and `ManuallyDrop` fields are stable; there is no intent to stabilize more [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `associated_type_bounds` has been stable since 1.79.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:63:5 [INFO] [stdout] | [INFO] [stdout] 63 | associated_type_bounds, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `const_fn_union` has been stable since 1.56.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:64:5 [INFO] [stdout] | [INFO] [stdout] 64 | const_fn_union, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 65 | min_const_generics, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `const_mut_refs` has been stable since 1.83.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:66:5 [INFO] [stdout] | [INFO] [stdout] 66 | const_mut_refs, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:67:5 [INFO] [stdout] | [INFO] [stdout] 67 | maybe_uninit_extra, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `maybe_uninit_ref` has been stable since 1.55.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:68:5 [INFO] [stdout] | [INFO] [stdout] 68 | maybe_uninit_ref, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union [INFO] [stdout] --> src/lib.rs:112:13 [INFO] [stdout] | [INFO] [stdout] 112 | maybe_uninit: MaybeUninit<[T; N]>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>` [INFO] [stdout] help: wrap the field type in `ManuallyDrop<...>` [INFO] [stdout] | [INFO] [stdout] 112 | maybe_uninit: std::mem::ManuallyDrop>, [INFO] [stdout] | +++++++++++++++++++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `associated_type_bounds` has been stable since 1.79.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:63:5 [INFO] [stdout] | [INFO] [stdout] 63 | associated_type_bounds, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `const_fn_union` has been stable since 1.56.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:64:5 [INFO] [stdout] | [INFO] [stdout] 64 | const_fn_union, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 65 | min_const_generics, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `const_mut_refs` has been stable since 1.83.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:66:5 [INFO] [stdout] | [INFO] [stdout] 66 | const_mut_refs, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:67:5 [INFO] [stdout] | [INFO] [stdout] 67 | maybe_uninit_extra, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `maybe_uninit_ref` has been stable since 1.55.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:68:5 [INFO] [stdout] | [INFO] [stdout] 68 | maybe_uninit_ref, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union [INFO] [stdout] --> src/lib.rs:112:13 [INFO] [stdout] | [INFO] [stdout] 112 | maybe_uninit: MaybeUninit<[T; N]>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>` [INFO] [stdout] help: wrap the field type in `ManuallyDrop<...>` [INFO] [stdout] | [INFO] [stdout] 112 | maybe_uninit: std::mem::ManuallyDrop>, [INFO] [stdout] | +++++++++++++++++++++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no function or associated item named `slice_assume_init_ref` found for union `MaybeUninit` in the current scope [INFO] [stdout] --> src/lib.rs:928:22 [INFO] [stdout] | [INFO] [stdout] 928 | MaybeUninit::slice_assume_init_ref(self) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>` [INFO] [stdout] | [INFO] [stdout] note: if you're trying to build a new `MaybeUninit<_>` consider using one of the following associated functions: [INFO] [stdout] MaybeUninit::::new [INFO] [stdout] MaybeUninit::::uninit [INFO] [stdout] MaybeUninit::::zeroed [INFO] [stdout] --> /rustc/350d0ef0ec0493e6d21cfb265cb8211a0e74d766/library/core/src/mem/maybe_uninit.rs:307:5 [INFO] [stdout] help: there is a method `assume_init_ref` with a similar name, but with different arguments [INFO] [stdout] --> /rustc/350d0ef0ec0493e6d21cfb265cb8211a0e74d766/library/core/src/mem/maybe_uninit.rs:782:5 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no function or associated item named `slice_assume_init_mut` found for union `MaybeUninit` in the current scope [INFO] [stdout] --> src/lib.rs:932:22 [INFO] [stdout] | [INFO] [stdout] 932 | MaybeUninit::slice_assume_init_mut(self) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>` [INFO] [stdout] | [INFO] [stdout] note: if you're trying to build a new `MaybeUninit<_>` consider using one of the following associated functions: [INFO] [stdout] MaybeUninit::::new [INFO] [stdout] MaybeUninit::::uninit [INFO] [stdout] MaybeUninit::::zeroed [INFO] [stdout] --> /rustc/350d0ef0ec0493e6d21cfb265cb8211a0e74d766/library/core/src/mem/maybe_uninit.rs:307:5 [INFO] [stdout] help: there is a method `assume_init_mut` with a similar name, but with different arguments [INFO] [stdout] --> /rustc/350d0ef0ec0493e6d21cfb265cb8211a0e74d766/library/core/src/mem/maybe_uninit.rs:899:5 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0557, E0599, E0740. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0557`. [INFO] [stdout] [INFO] [stderr] error: could not compile `const-buffer` (lib) due to 4 previous errors; 6 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0599]: no function or associated item named `slice_assume_init_ref` found for union `MaybeUninit` in the current scope [INFO] [stdout] --> src/lib.rs:928:22 [INFO] [stdout] | [INFO] [stdout] 928 | MaybeUninit::slice_assume_init_ref(self) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>` [INFO] [stdout] | [INFO] [stdout] note: if you're trying to build a new `MaybeUninit<_>` consider using one of the following associated functions: [INFO] [stdout] MaybeUninit::::new [INFO] [stdout] MaybeUninit::::uninit [INFO] [stdout] MaybeUninit::::zeroed [INFO] [stdout] --> /rustc/350d0ef0ec0493e6d21cfb265cb8211a0e74d766/library/core/src/mem/maybe_uninit.rs:307:5 [INFO] [stdout] help: there is a method `assume_init_ref` with a similar name, but with different arguments [INFO] [stdout] --> /rustc/350d0ef0ec0493e6d21cfb265cb8211a0e74d766/library/core/src/mem/maybe_uninit.rs:782:5 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no function or associated item named `slice_assume_init_mut` found for union `MaybeUninit` in the current scope [INFO] [stdout] --> src/lib.rs:932:22 [INFO] [stdout] | [INFO] [stdout] 932 | MaybeUninit::slice_assume_init_mut(self) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>` [INFO] [stdout] | [INFO] [stdout] note: if you're trying to build a new `MaybeUninit<_>` consider using one of the following associated functions: [INFO] [stdout] MaybeUninit::::new [INFO] [stdout] MaybeUninit::::uninit [INFO] [stdout] MaybeUninit::::zeroed [INFO] [stdout] --> /rustc/350d0ef0ec0493e6d21cfb265cb8211a0e74d766/library/core/src/mem/maybe_uninit.rs:307:5 [INFO] [stdout] help: there is a method `assume_init_mut` with a similar name, but with different arguments [INFO] [stdout] --> /rustc/350d0ef0ec0493e6d21cfb265cb8211a0e74d766/library/core/src/mem/maybe_uninit.rs:899:5 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0557, E0599, E0740. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0557`. [INFO] [stdout] [INFO] [stderr] error: could not compile `const-buffer` (lib test) due to 4 previous errors; 6 warnings emitted [INFO] running `Command { std: "docker" "inspect" "c75471ad56643d05aa8daf6f1b9cd36f762b4334ef3db914dc5f091f8f06baca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c75471ad56643d05aa8daf6f1b9cd36f762b4334ef3db914dc5f091f8f06baca", kill_on_drop: false }` [INFO] [stdout] c75471ad56643d05aa8daf6f1b9cd36f762b4334ef3db914dc5f091f8f06baca