[INFO] fetching crate iron-arrow 0.1.0...
[INFO] testing iron-arrow-0.1.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate iron-arrow 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate iron-arrow 0.1.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iron-arrow 0.1.0
[INFO] finished tweaking crates.io crate iron-arrow 0.1.0
[INFO] tweaked toml for crates.io crate iron-arrow 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 88a010b86b81320cc856804d1f31fc13697b29c56401aead80d44bbfbdf5178c
[INFO] running `Command { std: "docker" "start" "-a" "88a010b86b81320cc856804d1f31fc13697b29c56401aead80d44bbfbdf5178c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88a010b86b81320cc856804d1f31fc13697b29c56401aead80d44bbfbdf5178c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88a010b86b81320cc856804d1f31fc13697b29c56401aead80d44bbfbdf5178c", kill_on_drop: false }`
[INFO] [stdout] 88a010b86b81320cc856804d1f31fc13697b29c56401aead80d44bbfbdf5178c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 237be60acf5bb549157e27c880d291c5f7e5401753bac9ddf26134a909a4ce55
[INFO] running `Command { std: "docker" "start" "-a" "237be60acf5bb549157e27c880d291c5f7e5401753bac9ddf26134a909a4ce55", kill_on_drop: false }`
[INFO] [stderr]    Compiling iron-arrow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(integer_atomics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_syntax, box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(pointer_methods)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(core_intrinsics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_size_of)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/common/ty.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `common::status::ArrowError`
[INFO] [stdout]  --> src/common/ty.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use common::status::ArrowError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `array`
[INFO] [stdout]  --> src/common/ty.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use array;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std`
[INFO] [stdout]  --> src/common/ty.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std;
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]   --> src/common/ty.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::mem;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `Formatter`
[INFO] [stdout]   --> src/common/ty.rs:11:23
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::fmt::{Debug, Formatter, Error};
[INFO] [stdout]    |                       ^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/common/bit_util.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `array::Array`
[INFO] [stdout]  --> src/common/field.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use array::Array;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `Formatter`
[INFO] [stdout]  --> src/common/field.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fmt::{Debug, Formatter, Error};
[INFO] [stdout]   |                       ^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `common::status::ArrowError`
[INFO] [stdout]  --> src/array.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use common::status::ArrowError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `common::ty`
[INFO] [stdout]  --> src/array.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use common::ty;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `memory_pool::MemoryPool`
[INFO] [stdout]  --> src/array.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use memory_pool::MemoryPool;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/array.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ptr` is imported redundantly
[INFO] [stdout]    --> src/array.rs:284:13
[INFO] [stdout]     |
[INFO] [stdout] 9   | use std::ptr;
[INFO] [stdout]     |     -------- the item `ptr` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 284 |         use std::ptr;
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]    --> src/array.rs:284:13
[INFO] [stdout]     |
[INFO] [stdout] 284 |         use std::ptr;
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/array.rs:437:15
[INFO] [stdout]     |
[INFO] [stdout] 437 |           use libc;
[INFO] [stdout]     |               ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:7:1
[INFO] [stdout]     |
[INFO] [stdout] 7   | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StatusCode`
[INFO] [stdout]  --> src/memory_pool.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use common::status::{ArrowError, StatusCode};
[INFO] [stdout]   |                                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]  --> src/memory_pool.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Num`
[INFO] [stdout]   --> src/buffer.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use num::Num;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `common::ty`
[INFO] [stdout]  --> src/builder.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use common::ty;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `memory_pool::MemoryPool`
[INFO] [stdout]  --> src/builder.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use memory_pool::MemoryPool;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Array`
[INFO] [stdout]  --> src/builder.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | use array::{Array, Blob};
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/builder.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]    --> src/builder.rs:326:19
[INFO] [stdout]     |
[INFO] [stdout] 326 |               use libc;
[INFO] [stdout]     |                   ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:7:1
[INFO] [stdout]     |
[INFO] [stdout] 7   | extern crate libc;
[INFO] [stdout]     | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc`
[INFO] [stdout]    --> src/builder.rs:326:19
[INFO] [stdout]     |
[INFO] [stdout] 326 |               use libc;
[INFO] [stdout]     |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/memory_pool.rs:120:44
[INFO] [stdout]     |
[INFO] [stdout] 120 |     let mut page: *mut libc::c_void = mem::uninitialized();
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/buffer.rs:43:27
[INFO] [stdout]    |
[INFO] [stdout] 43 |         Ok((unsafe { mem::uninitialized() }, 0, 0))
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/buffer.rs:91:27
[INFO] [stdout]    |
[INFO] [stdout] 91 |       page: unsafe { mem::uninitialized() },
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/buffer.rs:239:27
[INFO] [stdout]     |
[INFO] [stdout] 239 |       page: unsafe { mem::uninitialized() },
[INFO] [stdout]     |                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules
[INFO] [stdout]  --> src/common/ty.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(integer_atomics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(pointer_methods)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(core_intrinsics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_size_of)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_size_of` has been stable since 1.40.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_size_of)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `pointer_methods` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(pointer_methods)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer.rs:80:21
[INFO] [stdout]    |
[INFO] [stdout] 80 |   pool: Arc<RefCell<MemoryPool>>,
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 80 -   pool: Arc<RefCell<MemoryPool>>,
[INFO] [stdout] 80 +   pool: Arc<RefCell<dyn MemoryPool>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/buffer.rs:229:21
[INFO] [stdout]     |
[INFO] [stdout] 229 |   pool: Arc<RefCell<MemoryPool>>,
[INFO] [stdout]     |                     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 229 -   pool: Arc<RefCell<MemoryPool>>,
[INFO] [stdout] 229 +   pool: Arc<RefCell<dyn MemoryPool>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/array.rs:649:25
[INFO] [stdout]     |
[INFO] [stdout] 649 |   fn as_bool(&self) -> &ArrowSlice<bool> {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 649 -   fn as_bool(&self) -> &ArrowSlice<bool> {
[INFO] [stdout] 649 +   fn as_bool(&self) -> &dyn ArrowSlice<bool> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/array.rs:653:25
[INFO] [stdout]     |
[INFO] [stdout] 653 |   fn as_int8(&self) -> &ArrowSlice<i8> {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 653 -   fn as_int8(&self) -> &ArrowSlice<i8> {
[INFO] [stdout] 653 +   fn as_int8(&self) -> &dyn ArrowSlice<i8> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer.rs:32:34
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn resize(pool: &mut Arc<RefCell<MemoryPool>>, page: *const u8, size: i64, capacity: i64, new_size: i64) -> Result<(*const u8, i64, i64),...
[INFO] [stdout]    |                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 32 - fn resize(pool: &mut Arc<RefCell<MemoryPool>>, page: *const u8, size: i64, capacity: i64, new_size: i64) -> Result<(*const u8, i64, i64), ArrowError> {
[INFO] [stdout] 32 + fn resize(pool: &mut Arc<RefCell<dyn MemoryPool>>, page: *const u8, size: i64, capacity: i64, new_size: i64) -> Result<(*const u8, i64, i64), ArrowError> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer.rs:58:35
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn reserve(pool: &mut Arc<RefCell<MemoryPool>>, page: *const u8, capacity: i64, new_capacity: i64) -> Result<(*const u8, i64), ArrowError> {
[INFO] [stdout]    |                                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 58 - fn reserve(pool: &mut Arc<RefCell<MemoryPool>>, page: *const u8, capacity: i64, new_capacity: i64) -> Result<(*const u8, i64), ArrowError> {
[INFO] [stdout] 58 + fn reserve(pool: &mut Arc<RefCell<dyn MemoryPool>>, page: *const u8, capacity: i64, new_capacity: i64) -> Result<(*const u8, i64), ArrowError> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer.rs:19:31
[INFO] [stdout]    |
[INFO] [stdout] 19 |   fn parent(&self) -> Option<&Buffer>;
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 -   fn parent(&self) -> Option<&Buffer>;
[INFO] [stdout] 19 +   fn parent(&self) -> Option<&dyn Buffer>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer.rs:88:32
[INFO] [stdout]    |
[INFO] [stdout] 88 |   pub fn new(pool: Arc<RefCell<MemoryPool>>) -> PoolBuffer {
[INFO] [stdout]    |                                ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 88 -   pub fn new(pool: Arc<RefCell<MemoryPool>>) -> PoolBuffer {
[INFO] [stdout] 88 +   pub fn new(pool: Arc<RefCell<dyn MemoryPool>>) -> PoolBuffer {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer.rs:98:33
[INFO] [stdout]    |
[INFO] [stdout] 98 |   pub fn from(pool: Arc<RefCell<MemoryPool>>, page: *const u8, size: i64, capacity: i64) -> PoolBuffer {
[INFO] [stdout]    |                                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 98 -   pub fn from(pool: Arc<RefCell<MemoryPool>>, page: *const u8, size: i64, capacity: i64) -> PoolBuffer {
[INFO] [stdout] 98 +   pub fn from(pool: Arc<RefCell<dyn MemoryPool>>, page: *const u8, size: i64, capacity: i64) -> PoolBuffer {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/buffer.rs:116:35
[INFO] [stdout]     |
[INFO] [stdout] 116 |   pub fn parent(&self) -> Option<&Buffer> {
[INFO] [stdout]     |                                   ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 116 -   pub fn parent(&self) -> Option<&Buffer> {
[INFO] [stdout] 116 +   pub fn parent(&self) -> Option<&dyn Buffer> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/buffer.rs:236:32
[INFO] [stdout]     |
[INFO] [stdout] 236 |   pub fn new(pool: Arc<RefCell<MemoryPool>>) -> BufferBuilder {
[INFO] [stdout]     |                                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 236 -   pub fn new(pool: Arc<RefCell<MemoryPool>>) -> BufferBuilder {
[INFO] [stdout] 236 +   pub fn new(pool: Arc<RefCell<dyn MemoryPool>>) -> BufferBuilder {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Buffer`
[INFO] [stdout]  --> src/array.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | use buffer::{Buffer, PoolBuffer};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Buffer`
[INFO] [stdout]  --> src/builder.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | use buffer::{Buffer, PoolBuffer, ResizableBuffer, MutableBuffer};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors; 45 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `iron-arrow` due to 10 previous errors; 45 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "237be60acf5bb549157e27c880d291c5f7e5401753bac9ddf26134a909a4ce55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "237be60acf5bb549157e27c880d291c5f7e5401753bac9ddf26134a909a4ce55", kill_on_drop: false }`
[INFO] [stdout] 237be60acf5bb549157e27c880d291c5f7e5401753bac9ddf26134a909a4ce55