[INFO] cloning repository https://github.com/PaulGrandperrin/playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PaulGrandperrin/playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaulGrandperrin%2Fplayground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaulGrandperrin%2Fplayground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 572ff41ccdfa72771a37fd9ab89f37e9b5451041
[INFO] checking PaulGrandperrin/playground/572ff41ccdfa72771a37fd9ab89f37e9b5451041 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaulGrandperrin%2Fplayground" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PaulGrandperrin/playground on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PaulGrandperrin/playground
[INFO] finished tweaking git repo https://github.com/PaulGrandperrin/playground
[INFO] tweaked toml for git repo https://github.com/PaulGrandperrin/playground written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/PaulGrandperrin/playground 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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] acd865ad6a14895706b542dd3ea314b5f504ca219eb05e7aaaaad78ba984d955
[INFO] running `Command { std: "docker" "start" "-a" "acd865ad6a14895706b542dd3ea314b5f504ca219eb05e7aaaaad78ba984d955", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acd865ad6a14895706b542dd3ea314b5f504ca219eb05e7aaaaad78ba984d955", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acd865ad6a14895706b542dd3ea314b5f504ca219eb05e7aaaaad78ba984d955", kill_on_drop: false }`
[INFO] [stdout] acd865ad6a14895706b542dd3ea314b5f504ca219eb05e7aaaaad78ba984d955
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3ab97ac8ab910d17c87baa288458e6c2693f38427a45341c82d2a6dfdeb6012
[INFO] running `Command { std: "docker" "start" "-a" "c3ab97ac8ab910d17c87baa288458e6c2693f38427a45341c82d2a6dfdeb6012", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking rustc-demangle v0.1.14
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling serde v1.0.91
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling backtrace v0.3.26
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking color-backtrace v0.1.3
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking exitfailure v0.5.1
[INFO] [stderr]     Checking playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]  --> src/algorithm.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::BTreeMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Insert`
[INFO] [stdout]   --> src/algorithm.rs:12:62
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::non_volatile::object::tree::{BufferNode, Message, Insert};
[INFO] [stdout]    |                                                              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::common::ConstObjType`
[INFO] [stdout]   --> src/algorithm.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     use crate::common::ConstObjType;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/algorithm.rs:302:20
[INFO] [stdout]     |
[INFO] [stdout] 302 |                 if (num_of_candidates_for_cur_child > BUF_SIZE) { // BIG TODO find a better heuristic
[INFO] [stdout]     |                    ^                                          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 302 -                 if (num_of_candidates_for_cur_child > BUF_SIZE) { // BIG TODO find a better heuristic
[INFO] [stdout] 302 +                 if num_of_candidates_for_cur_child > BUF_SIZE { // BIG TODO find a better heuristic
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::common::ConstObjType`
[INFO] [stdout]  --> src/context.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::common::ConstObjType;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::non_volatile::object::object_type::ObjectType`
[INFO] [stdout]  --> src/context.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::non_volatile::object::object_type::ObjectType;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LeafNode`, `LeafType`, and `NodeEntry`
[INFO] [stdout]  --> src/context.rs:6:41
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::non_volatile::object::tree::{LeafNode, LeafType, NodeEntry, Message, Insert};
[INFO] [stdout]   |                                         ^^^^^^^^  ^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/context.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]   --> src/context.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::rc::Rc;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/non_volatile/object/any_rc_object.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryInto`
[INFO] [stdout]  --> src/non_volatile/object/any_rc_object.rs:7:29
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufMut` and `Buf`
[INFO] [stdout]  --> src/non_volatile/object/object_pointer.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use bytes::{Buf, BufMut};
[INFO] [stdout]   |             ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> src/non_volatile/object/object_pointer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/non_volatile/object/tree.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize`, `Deserializer`, `SeqAccess`, `Visitor`, and `self`
[INFO] [stdout]  --> src/non_volatile/object/tree.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::de::{self, Deserialize, Deserializer, SeqAccess, Visitor};
[INFO] [stdout]   |                 ^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SerializeStruct`, `Serialize`, and `Serializer`
[INFO] [stdout]  --> src/non_volatile/object/tree.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde::ser::{Serialize, SerializeStruct, Serializer};
[INFO] [stdout]   |                  ^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/non_volatile/object/tree/internal_node.rs:45:42
[INFO] [stdout]    |
[INFO] [stdout] 45 |             _p: std::marker::PhantomData<(K)>,
[INFO] [stdout]    |                                          ^ ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 45 -             _p: std::marker::PhantomData<(K)>,
[INFO] [stdout] 45 +             _p: std::marker::PhantomData<K>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/non_volatile/object/tree/buffer_node.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `any_node::AnyNode`
[INFO] [stdout]   --> src/non_volatile/object/tree.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub use any_node::AnyNode;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufMut` and `Buf`
[INFO] [stdout]  --> src/non_volatile/object/uberblock.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use bytes::{Buf, BufMut};
[INFO] [stdout]   |             ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::format_err`
[INFO] [stdout]  --> src/non_volatile/object/uberblock.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use failure::format_err;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> src/non_volatile/object/uberblock.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/non_volatile/object/uberblock.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]  --> src/algorithm.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::BTreeMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Insert`
[INFO] [stdout]   --> src/algorithm.rs:12:62
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::non_volatile::object::tree::{BufferNode, Message, Insert};
[INFO] [stdout]    |                                                              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::common::ConstObjType`
[INFO] [stdout]   --> src/algorithm.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     use crate::common::ConstObjType;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/algorithm.rs:302:20
[INFO] [stdout]     |
[INFO] [stdout] 302 |                 if (num_of_candidates_for_cur_child > BUF_SIZE) { // BIG TODO find a better heuristic
[INFO] [stdout]     |                    ^                                          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 302 -                 if (num_of_candidates_for_cur_child > BUF_SIZE) { // BIG TODO find a better heuristic
[INFO] [stdout] 302 +                 if num_of_candidates_for_cur_child > BUF_SIZE { // BIG TODO find a better heuristic
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::common::ConstObjType`
[INFO] [stdout]  --> src/context.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::common::ConstObjType;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::non_volatile::object::object_type::ObjectType`
[INFO] [stdout]  --> src/context.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::non_volatile::object::object_type::ObjectType;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LeafNode`, `LeafType`, and `NodeEntry`
[INFO] [stdout]  --> src/context.rs:6:41
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::non_volatile::object::tree::{LeafNode, LeafType, NodeEntry, Message, Insert};
[INFO] [stdout]   |                                         ^^^^^^^^  ^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/context.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]   --> src/context.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::rc::Rc;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/non_volatile/object/any_rc_object.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryInto`
[INFO] [stdout]  --> src/non_volatile/object/any_rc_object.rs:7:29
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufMut` and `Buf`
[INFO] [stdout]  --> src/non_volatile/object/object_pointer.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use bytes::{Buf, BufMut};
[INFO] [stdout]   |             ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> src/non_volatile/object/object_pointer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/non_volatile/object/tree.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize`, `Deserializer`, `SeqAccess`, `Visitor`, and `self`
[INFO] [stdout]  --> src/non_volatile/object/tree.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::de::{self, Deserialize, Deserializer, SeqAccess, Visitor};
[INFO] [stdout]   |                 ^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SerializeStruct`, `Serialize`, and `Serializer`
[INFO] [stdout]  --> src/non_volatile/object/tree.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde::ser::{Serialize, SerializeStruct, Serializer};
[INFO] [stdout]   |                  ^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/non_volatile/object/tree/internal_node.rs:45:42
[INFO] [stdout]    |
[INFO] [stdout] 45 |             _p: std::marker::PhantomData<(K)>,
[INFO] [stdout]    |                                          ^ ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 45 -             _p: std::marker::PhantomData<(K)>,
[INFO] [stdout] 45 +             _p: std::marker::PhantomData<K>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/non_volatile/object/tree/buffer_node.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `any_node::AnyNode`
[INFO] [stdout]   --> src/non_volatile/object/tree.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub use any_node::AnyNode;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufMut` and `Buf`
[INFO] [stdout]  --> src/non_volatile/object/uberblock.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use bytes::{Buf, BufMut};
[INFO] [stdout]   |             ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::format_err`
[INFO] [stdout]  --> src/non_volatile/object/uberblock.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use failure::format_err;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> src/non_volatile/object/uberblock.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/non_volatile/object/uberblock.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `non_exhaustive` has been stable since 1.40.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     non_exhaustive,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `uniform_paths` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     uniform_paths,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `dbg_macro` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     dbg_macro,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     try_from,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:79:31
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn process_sortedmap(sm: &mut SortedMap<&str, &str>) {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn process_sortedmap(sm: &mut dyn SortedMap<&str, &str>) {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `non_exhaustive` has been stable since 1.40.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     non_exhaustive,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `uniform_paths` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     uniform_paths,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `dbg_macro` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     dbg_macro,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     try_from,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:79:31
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn process_sortedmap(sm: &mut SortedMap<&str, &str>) {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn process_sortedmap(sm: &mut dyn SortedMap<&str, &str>) {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     return Ok(());
[INFO] [stdout]    |     ------------- any code following this expression is unreachable
[INFO] [stdout] 31 |     ctx.commit();
[INFO] [stdout]    |     ^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::common::ConstObjType`
[INFO] [stdout]  --> src/non_volatile/manager.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::common::ConstObjType;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     return Ok(());
[INFO] [stdout]    |     ------------- any code following this expression is unreachable
[INFO] [stdout] 31 |     ctx.commit();
[INFO] [stdout]    |     ^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::common::ConstObjType`
[INFO] [stdout]  --> src/non_volatile/manager.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::common::ConstObjType;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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/non_volatile/cache/basic.rs:26:22
[INFO] [stdout]    |
[INFO] [stdout] 26 |             .map(|o| o.clone().try_into().unwrap())
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/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/non_volatile/manager.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |       pub fn new<O: Object>(obj: O) -> (Self, ObjectPointer) {
[INFO] [stdout]    |                             ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 30 |           // initialization
[INFO] [stdout] 31 |           let mut nv_blk_dev = FileBackend::new();
[INFO] [stdout]    |                   ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 55 | /             Self {
[INFO] [stdout] 56 | |                 nv_blk_dev: FileBackend::new(),
[INFO] [stdout] 57 | |                 txg,
[INFO] [stdout] 58 | |                 fso,
[INFO] [stdout] 59 | |                 ccache,
[INFO] [stdout] 60 | |             },
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `FileBackend::write` that must be used
[INFO] [stdout]   --> src/non_volatile/manager.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             nv_blk_dev.write(i * Uberblock::RAW_SIZE as u64, &ub_raw);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 50 |             let _ = nv_blk_dev.write(i * Uberblock::RAW_SIZE as u64, &ub_raw);
[INFO] [stdout]    |             +++++++
[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/non_volatile/manager.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |           let mut nv_blk_dev = FileBackend::new();
[INFO] [stdout]    |                   ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 88 | /             Self {
[INFO] [stdout] 89 | |                 nv_blk_dev,
[INFO] [stdout] 90 | |                 txg,
[INFO] [stdout] 91 | |                 fso: ub.fso,
[INFO] [stdout] 92 | |                 ccache,
[INFO] [stdout] 93 | |             },
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `FileBackend::write` that must be used
[INFO] [stdout]    --> src/non_volatile/manager.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         self.nv_blk_dev.write(ub_offset, &ub_raw);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let _ = self.nv_blk_dev.write(ub_offset, &ub_raw);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `FileBackend::write` that must be used
[INFO] [stdout]    --> src/non_volatile/manager.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         nv_blk_dev.write(offset, &obj_raw);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let _ = nv_blk_dev.write(offset, &obj_raw);
[INFO] [stdout]     |         +++++++
[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/non_volatile/object/tree/internal_node.rs:69:20
[INFO] [stdout]    |
[INFO] [stdout] 57 |               fn visit_seq<S>(self, mut seq: S) -> Result<InternalNode<K>, S::Error>
[INFO] [stdout]    |                                     ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 61 |                   let entries = seq
[INFO] [stdout]    |                       ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 69 |                   Ok(InternalNode {
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 70 | |                     entries,
[INFO] [stdout] 71 | |                     buffer_ptr,
[INFO] [stdout] 72 | |                 })
[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]    | |                 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]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/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/non_volatile/object/tree/leaf_node.rs:66:20
[INFO] [stdout]    |
[INFO] [stdout] 58 |               fn visit_seq<S>(self, mut seq: S) -> Result<LeafNode<K, V>, S::Error>
[INFO] [stdout]    |                                     ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 62 |                   let entries = seq
[INFO] [stdout]    |                       ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 66 |                   Ok(LeafNode {
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 67 | |                     entries,
[INFO] [stdout] 68 | |                 })
[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]    | |_________________these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/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/non_volatile/object/tree/buffer_node.rs:15:42
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
[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 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: this error originates in the macro `try` (in Nightly builds, run with -Z macro-backtrace for more info)
[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/non_volatile/object/tree/buffer_node.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 66 |               fn visit_seq<S>(self, mut seq: S) -> Result<BufferNode<K, V>, S::Error>
[INFO] [stdout]    |                                     ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 70 |                   let entries = seq
[INFO] [stdout]    |                       ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 74 |                   Ok(BufferNode {
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 75 | |                     entries,
[INFO] [stdout] 76 | |                 })
[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]    | |_________________these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/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/non_volatile/cache/basic.rs:26:22
[INFO] [stdout]    |
[INFO] [stdout] 26 |             .map(|o| o.clone().try_into().unwrap())
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/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/non_volatile/manager.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |       pub fn new<O: Object>(obj: O) -> (Self, ObjectPointer) {
[INFO] [stdout]    |                             ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 30 |           // initialization
[INFO] [stdout] 31 |           let mut nv_blk_dev = FileBackend::new();
[INFO] [stdout]    |                   ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 55 | /             Self {
[INFO] [stdout] 56 | |                 nv_blk_dev: FileBackend::new(),
[INFO] [stdout] 57 | |                 txg,
[INFO] [stdout] 58 | |                 fso,
[INFO] [stdout] 59 | |                 ccache,
[INFO] [stdout] 60 | |             },
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors; 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `FileBackend::write` that must be used
[INFO] [stdout]   --> src/non_volatile/manager.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             nv_blk_dev.write(i * Uberblock::RAW_SIZE as u64, &ub_raw);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 50 |             let _ = nv_blk_dev.write(i * Uberblock::RAW_SIZE as u64, &ub_raw);
[INFO] [stdout]    |             +++++++
[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/non_volatile/manager.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |           let mut nv_blk_dev = FileBackend::new();
[INFO] [stdout]    |                   ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 88 | /             Self {
[INFO] [stdout] 89 | |                 nv_blk_dev,
[INFO] [stdout] 90 | |                 txg,
[INFO] [stdout] 91 | |                 fso: ub.fso,
[INFO] [stdout] 92 | |                 ccache,
[INFO] [stdout] 93 | |             },
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `FileBackend::write` that must be used
[INFO] [stdout]    --> src/non_volatile/manager.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         self.nv_blk_dev.write(ub_offset, &ub_raw);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let _ = self.nv_blk_dev.write(ub_offset, &ub_raw);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `FileBackend::write` that must be used
[INFO] [stdout]    --> src/non_volatile/manager.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         nv_blk_dev.write(offset, &obj_raw);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let _ = nv_blk_dev.write(offset, &obj_raw);
[INFO] [stdout]     |         +++++++
[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/non_volatile/object/tree/internal_node.rs:69:20
[INFO] [stdout]    |
[INFO] [stdout] 57 |               fn visit_seq<S>(self, mut seq: S) -> Result<InternalNode<K>, S::Error>
[INFO] [stdout]    |                                     ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 61 |                   let entries = seq
[INFO] [stdout]    |                       ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 69 |                   Ok(InternalNode {
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 70 | |                     entries,
[INFO] [stdout] 71 | |                     buffer_ptr,
[INFO] [stdout] 72 | |                 })
[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]    | |                 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]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `playground` (bin "playground") due to 8 previous errors; 33 warnings emitted
[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/non_volatile/object/tree/leaf_node.rs:66:20
[INFO] [stdout]    |
[INFO] [stdout] 58 |               fn visit_seq<S>(self, mut seq: S) -> Result<LeafNode<K, V>, S::Error>
[INFO] [stdout]    |                                     ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 62 |                   let entries = seq
[INFO] [stdout]    |                       ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 66 |                   Ok(LeafNode {
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 67 | |                     entries,
[INFO] [stdout] 68 | |                 })
[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]    | |_________________these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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/non_volatile/object/tree/buffer_node.rs:15:42
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
[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 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: this error originates in the macro `try` (in Nightly builds, run with -Z macro-backtrace for more info)
[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/non_volatile/object/tree/buffer_node.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 66 |               fn visit_seq<S>(self, mut seq: S) -> Result<BufferNode<K, V>, S::Error>
[INFO] [stdout]    |                                     ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 70 |                   let entries = seq
[INFO] [stdout]    |                       ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 74 |                   Ok(BufferNode {
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 75 | |                     entries,
[INFO] [stdout] 76 | |                 })
[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]    | |_________________these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors; 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `playground` (bin "playground" test) due to 8 previous errors; 33 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c3ab97ac8ab910d17c87baa288458e6c2693f38427a45341c82d2a6dfdeb6012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3ab97ac8ab910d17c87baa288458e6c2693f38427a45341c82d2a6dfdeb6012", kill_on_drop: false }`
[INFO] [stdout] c3ab97ac8ab910d17c87baa288458e6c2693f38427a45341c82d2a6dfdeb6012