[INFO] fetching crate core-allocator 0.2.2... [INFO] checking core-allocator-0.2.2 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu [INFO] extracting crate core-allocator 0.2.2 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate core-allocator 0.2.2 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate core-allocator 0.2.2 [INFO] finished tweaking crates.io crate core-allocator 0.2.2 [INFO] tweaked toml for crates.io crate core-allocator 0.2.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate crates.io crate core-allocator 0.2.2 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded memoffset v0.6.4 [INFO] [stderr] Downloaded cc v1.0.71 [INFO] [stderr] Downloaded hwloc2 v2.2.0 [INFO] [stderr] Downloaded pkg-config v0.3.22 [INFO] [stderr] Downloaded anyhow v1.0.45 [INFO] [stderr] Downloaded nix v0.23.0 [INFO] [stderr] Downloaded libc v0.2.106 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1c474a94db9bf8c50418cd7cfb0e650c76d4491ce5fd0a441d9c6a816411df98 [INFO] running `Command { std: "docker" "start" "-a" "1c474a94db9bf8c50418cd7cfb0e650c76d4491ce5fd0a441d9c6a816411df98", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1c474a94db9bf8c50418cd7cfb0e650c76d4491ce5fd0a441d9c6a816411df98", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1c474a94db9bf8c50418cd7cfb0e650c76d4491ce5fd0a441d9c6a816411df98", kill_on_drop: false }` [INFO] [stdout] 1c474a94db9bf8c50418cd7cfb0e650c76d4491ce5fd0a441d9c6a816411df98 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4b570abb7d3b3ed7f44aa6d6f74b57937f378dd8476180caffb17d481200f733 [INFO] running `Command { std: "docker" "start" "-a" "4b570abb7d3b3ed7f44aa6d6f74b57937f378dd8476180caffb17d481200f733", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.106 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling memoffset v0.6.4 [INFO] [stderr] Compiling pkg-config v0.3.22 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling anyhow v1.0.45 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking termcolor v1.1.2 [INFO] [stderr] Compiling hwloc2 v2.2.0 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stderr] Checking num v0.1.42 [INFO] [stderr] Checking errno v0.2.8 [INFO] [stderr] Checking nix v0.23.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking env_logger v0.9.0 [INFO] [stderr] Checking core-allocator v0.2.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.84s [INFO] running `Command { std: "docker" "inspect" "4b570abb7d3b3ed7f44aa6d6f74b57937f378dd8476180caffb17d481200f733", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4b570abb7d3b3ed7f44aa6d6f74b57937f378dd8476180caffb17d481200f733", kill_on_drop: false }` [INFO] [stdout] 4b570abb7d3b3ed7f44aa6d6f74b57937f378dd8476180caffb17d481200f733 [INFO] checking core-allocator-0.2.2 against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu [INFO] extracting crate core-allocator 0.2.2 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate core-allocator 0.2.2 on toolchain f9935d29d867449445ee008640ccca1bf1ae0889 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate core-allocator 0.2.2 [INFO] finished tweaking crates.io crate core-allocator 0.2.2 [INFO] tweaked toml for crates.io crate core-allocator 0.2.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate crates.io crate core-allocator 0.2.2 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 910e5166f763d5d84b60808a02fbd87e72cdecb37654ff068821d963305862f2 [INFO] running `Command { std: "docker" "start" "-a" "910e5166f763d5d84b60808a02fbd87e72cdecb37654ff068821d963305862f2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "910e5166f763d5d84b60808a02fbd87e72cdecb37654ff068821d963305862f2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "910e5166f763d5d84b60808a02fbd87e72cdecb37654ff068821d963305862f2", kill_on_drop: false }` [INFO] [stdout] 910e5166f763d5d84b60808a02fbd87e72cdecb37654ff068821d963305862f2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 24be0b58d2925437416c3104a19fa209c72d2f680ce802f917f8453d9e0a512e [INFO] running `Command { std: "docker" "start" "-a" "24be0b58d2925437416c3104a19fa209c72d2f680ce802f917f8453d9e0a512e", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.106 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling memoffset v0.6.4 [INFO] [stderr] Compiling pkg-config v0.3.22 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling anyhow v1.0.45 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking termcolor v1.1.2 [INFO] [stderr] Compiling hwloc2 v2.2.0 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Checking num v0.1.42 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stderr] Checking errno v0.2.8 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking nix v0.23.0 [INFO] [stderr] Checking env_logger v0.9.0 [INFO] [stderr] Checking core-allocator v0.2.2 (/opt/rustwide/workdir) [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:41:20 [INFO] [stdout] | [INFO] [stdout] 39 | pub fn cores(lock: ResourceHandle, cores: Vec>) -> Self { [INFO] [stdout] | -------------------- ---------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 40 | Self { [INFO] [stdout] 41 | _lock: Some(lock), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:41:20 [INFO] [stdout] | [INFO] [stdout] 39 | pub fn cores(lock: ResourceHandle, cores: Vec>) -> Self { [INFO] [stdout] | -------------------- ---------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 40 | Self { [INFO] [stdout] 41 | _lock: Some(lock), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:42:20 [INFO] [stdout] | [INFO] [stdout] 39 | pub fn cores(lock: ResourceHandle, cores: Vec>) -> Self { [INFO] [stdout] | -------------------- ---------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 42 | inner: CoreGroupInner::Cores(cores), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:42:20 [INFO] [stdout] | [INFO] [stdout] 39 | pub fn cores(lock: ResourceHandle, cores: Vec>) -> Self { [INFO] [stdout] | -------------------- ---------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 42 | inner: CoreGroupInner::Cores(cores), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:50:66 [INFO] [stdout] | [INFO] [stdout] 50 | CoreGroupInner::Cores(cores) => cores.iter().map(|x| x.reserve().unwrap()).collect(), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:50:66 [INFO] [stdout] | [INFO] [stdout] 50 | CoreGroupInner::Cores(cores) => cores.iter().map(|x| x.reserve().unwrap()).collect(), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:126:12 [INFO] [stdout] | [INFO] [stdout] 117 | let guard = self.taken.try_lock().map_err(|x| match x { [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 126 | Ok(Cleanup::new(Some(prior), Some(guard))) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:138:12 [INFO] [stdout] | [INFO] [stdout] 129 | let guard = self.taken.try_lock().map_err(|x| match x { [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 138 | Ok(ManagedCore::new(self.index)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:126:12 [INFO] [stdout] | [INFO] [stdout] 117 | let guard = self.taken.try_lock().map_err(|x| match x { [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 126 | Ok(Cleanup::new(Some(prior), Some(guard))) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:138:12 [INFO] [stdout] | [INFO] [stdout] 129 | let guard = self.taken.try_lock().map_err(|x| match x { [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 138 | Ok(ManagedCore::new(self.index)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 5 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 5 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `core-allocator` (lib) due to 6 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `core-allocator` (lib test) due to 6 previous errors [INFO] running `Command { std: "docker" "inspect" "24be0b58d2925437416c3104a19fa209c72d2f680ce802f917f8453d9e0a512e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "24be0b58d2925437416c3104a19fa209c72d2f680ce802f917f8453d9e0a512e", kill_on_drop: false }` [INFO] [stdout] 24be0b58d2925437416c3104a19fa209c72d2f680ce802f917f8453d9e0a512e