[INFO] fetching crate stream_buffer 0.2.0...
[INFO] building stream_buffer-0.2.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate stream_buffer 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate stream_buffer 0.2.0 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stream_buffer 0.2.0
[INFO] finished tweaking crates.io crate stream_buffer 0.2.0
[INFO] tweaked toml for crates.io crate stream_buffer 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate stream_buffer 0.2.0 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea1895a5cc22026339e4a6c40a58fe51a34f3844dc668aefcf6203ea194ed906
[INFO] running `Command { std: "docker" "start" "-a" "ea1895a5cc22026339e4a6c40a58fe51a34f3844dc668aefcf6203ea194ed906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea1895a5cc22026339e4a6c40a58fe51a34f3844dc668aefcf6203ea194ed906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea1895a5cc22026339e4a6c40a58fe51a34f3844dc668aefcf6203ea194ed906", kill_on_drop: false }`
[INFO] [stdout] ea1895a5cc22026339e4a6c40a58fe51a34f3844dc668aefcf6203ea194ed906
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2d98fc6edaf89d39f8ce3411db6b4507872d4f942394e5963d79fb28f9d8a77
[INFO] running `Command { std: "docker" "start" "-a" "b2d98fc6edaf89d39f8ce3411db6b4507872d4f942394e5963d79fb28f9d8a77", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling stream_buffer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::BufWriter`
[INFO] [stdout]  --> src/buf.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::BufWriter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Into` and `TryInto`
[INFO] [stdout]  --> src/chunk.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::convert::{TryInto, Into};
[INFO] [stdout]   |                    ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SeekFrom`
[INFO] [stdout]  --> src/types.rs:1:38
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub use std::io::{Write, Read, Seek, SeekFrom};
[INFO] [stdout]   |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error as IoError`
[INFO] [stdout]  --> src/types.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use std::io::{Error as IoError, Result as IoResult};
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/chunk.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{Read, SeekFrom};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntoStream`
[INFO] [stdout]  --> src/chunk.rs:3:40
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::types::{FileLike, BufResult,IntoStream, IterStream};
[INFO] [stdout]   |                                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/types.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     for item in items {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `size` is never read
[INFO] [stdout]   --> src/buf.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct StreamBuffer2<T: IterStream<S>, S, F: FileLike> {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 25 |     pub size: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StreamBuffer3` is never constructed
[INFO] [stdout]   --> src/buf.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct StreamBuffer3<T, F> 
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `BufferCreate` is never used
[INFO] [stdout]   --> src/buf.rs:43:11
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub trait BufferCreate<T, F: FileLike>: Buffer {
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CreateBuffer` is never used
[INFO] [stdout]   --> src/buf.rs:47:11
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub trait CreateBuffer<T, F: FileLike>: Buffer {
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read` is never used
[INFO] [stdout]   --> src/buf.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub trait BufferRead<T>: Buffer {
[INFO] [stdout]    |           ---------- method in this trait
[INFO] [stdout] 52 |     fn read(&mut self, offset: usize, size: usize) -> T;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/buf.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 85 | impl<T: IterStream<S>, S> StreamBuffer2<T, S, SpooledTempFile>
[INFO] [stdout]    | -------------------------------------------------------------- associated function in this implementation
[INFO] [stdout] 86 | {
[INFO] [stdout] 87 |     pub fn new(stream: T, size: usize) -> StreamBuffer2<T, S, SpooledTempFile> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/types.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn test<T: IntoStream<u8>>(items: T) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "b2d98fc6edaf89d39f8ce3411db6b4507872d4f942394e5963d79fb28f9d8a77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2d98fc6edaf89d39f8ce3411db6b4507872d4f942394e5963d79fb28f9d8a77", kill_on_drop: false }`
[INFO] [stdout] b2d98fc6edaf89d39f8ce3411db6b4507872d4f942394e5963d79fb28f9d8a77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59d26e8547c11fbf623c70aa1f3891e8a815fd760247870c06667bdbffd8256f
[INFO] running `Command { std: "docker" "start" "-a" "59d26e8547c11fbf623c70aa1f3891e8a815fd760247870c06667bdbffd8256f", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::io::BufWriter`
[INFO] [stdout]  --> src/buf.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::BufWriter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Into` and `TryInto`
[INFO] [stdout]  --> src/chunk.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::convert::{TryInto, Into};
[INFO] [stdout]   |                    ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SeekFrom`
[INFO] [stdout]  --> src/types.rs:1:38
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub use std::io::{Write, Read, Seek, SeekFrom};
[INFO] [stdout]   |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error as IoError`
[INFO] [stdout]  --> src/types.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use std::io::{Error as IoError, Result as IoResult};
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/chunk.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{Read, SeekFrom};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntoStream`
[INFO] [stdout]  --> src/chunk.rs:3:40
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::types::{FileLike, BufResult,IntoStream, IterStream};
[INFO] [stdout]   |                                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/types.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     for item in items {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `size` is never read
[INFO] [stdout]   --> src/buf.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct StreamBuffer2<T: IterStream<S>, S, F: FileLike> {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 25 |     pub size: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StreamBuffer3` is never constructed
[INFO] [stdout]   --> src/buf.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct StreamBuffer3<T, F> 
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `BufferCreate` is never used
[INFO] [stdout]   --> src/buf.rs:43:11
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub trait BufferCreate<T, F: FileLike>: Buffer {
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CreateBuffer` is never used
[INFO] [stdout]   --> src/buf.rs:47:11
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub trait CreateBuffer<T, F: FileLike>: Buffer {
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read` is never used
[INFO] [stdout]   --> src/buf.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub trait BufferRead<T>: Buffer {
[INFO] [stdout]    |           ---------- method in this trait
[INFO] [stdout] 52 |     fn read(&mut self, offset: usize, size: usize) -> T;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling stream_buffer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/buf.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 85 | impl<T: IterStream<S>, S> StreamBuffer2<T, S, SpooledTempFile>
[INFO] [stdout]    | -------------------------------------------------------------- associated function in this implementation
[INFO] [stdout] 86 | {
[INFO] [stdout] 87 |     pub fn new(stream: T, size: usize) -> StreamBuffer2<T, S, SpooledTempFile> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/types.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn test<T: IntoStream<u8>>(items: T) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufWriter`
[INFO] [stdout]  --> src/buf.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::BufWriter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Into` and `TryInto`
[INFO] [stdout]  --> src/chunk.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::convert::{TryInto, Into};
[INFO] [stdout]   |                    ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SeekFrom`
[INFO] [stdout]  --> src/types.rs:1:38
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub use std::io::{Write, Read, Seek, SeekFrom};
[INFO] [stdout]   |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error as IoError`
[INFO] [stdout]  --> src/types.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use std::io::{Error as IoError, Result as IoResult};
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead` and `self`
[INFO] [stdout]   --> src/lib.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 19 |     use std::io::{self, BufRead};
[INFO] [stdout]    |                   ^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     use itertools::Itertools;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StreamBuffer2`
[INFO] [stdout]   --> src/lib.rs:24:36
[INFO] [stdout]    |
[INFO] [stdout] 24 |     use super::buf::{StreamBuffer, StreamBuffer2, ByteStreamBuf, BufferRead, BufferCreate};
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/chunk.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{Read, SeekFrom};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntoStream`
[INFO] [stdout]  --> src/chunk.rs:3:40
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::types::{FileLike, BufResult,IntoStream, IterStream};
[INFO] [stdout]   |                                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/types.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     for item in items {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `size` is never read
[INFO] [stdout]   --> src/buf.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct StreamBuffer2<T: IterStream<S>, S, F: FileLike> {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 25 |     pub size: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StreamBuffer3` is never constructed
[INFO] [stdout]   --> src/buf.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct StreamBuffer3<T, F> 
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CreateBuffer` is never used
[INFO] [stdout]   --> src/buf.rs:47:11
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub trait CreateBuffer<T, F: FileLike>: Buffer {
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/buf.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 85 | impl<T: IterStream<S>, S> StreamBuffer2<T, S, SpooledTempFile>
[INFO] [stdout]    | -------------------------------------------------------------- associated function in this implementation
[INFO] [stdout] 86 | {
[INFO] [stdout] 87 |     pub fn new(stream: T, size: usize) -> StreamBuffer2<T, S, SpooledTempFile> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/types.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn test<T: IntoStream<u8>>(items: T) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [optimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "59d26e8547c11fbf623c70aa1f3891e8a815fd760247870c06667bdbffd8256f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59d26e8547c11fbf623c70aa1f3891e8a815fd760247870c06667bdbffd8256f", kill_on_drop: false }`
[INFO] [stdout] 59d26e8547c11fbf623c70aa1f3891e8a815fd760247870c06667bdbffd8256f