[INFO] fetching crate async-fcgi 0.2.0...
[INFO] checking async-fcgi-0.2.0 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate async-fcgi 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate async-fcgi 0.2.0 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-fcgi 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate async-fcgi 0.2.0
[INFO] tweaked toml for crates.io crate async-fcgi 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate async-fcgi 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5b5be5424d360ab569345387550b6637c57e888d4a7498fce7baeaa521cca4c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e5b5be5424d360ab569345387550b6637c57e888d4a7498fce7baeaa521cca4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5b5be5424d360ab569345387550b6637c57e888d4a7498fce7baeaa521cca4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5b5be5424d360ab569345387550b6637c57e888d4a7498fce7baeaa521cca4c", kill_on_drop: false }`
[INFO] [stdout] e5b5be5424d360ab569345387550b6637c57e888d4a7498fce7baeaa521cca4c
[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=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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7affe9ab076ebdfc192cc9ab1dcabfb57ef5c01d06afb57fedc3fe78602176d5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7affe9ab076ebdfc192cc9ab1dcabfb57ef5c01d06afb57fedc3fe78602176d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]     Checking futures-core v0.3.6
[INFO] [stderr]     Checking pin-project-lite v0.1.10
[INFO] [stderr]     Checking futures-task v0.3.6
[INFO] [stderr]     Checking futures-sink v0.3.6
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking async-fcgi v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking aho-corasick v0.7.14
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]     Checking futures-channel v0.3.6
[INFO] [stdout] warning: field is never read: `role`
[INFO] [stdout]   --> src/fastcgi.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     role: u16,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `flags`
[INFO] [stdout]   --> src/fastcgi.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     flags: u8,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rtype`
[INFO] [stdout]   --> src/fastcgi.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     rtype: u8,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `header`
[INFO] [stdout]   --> src/fastcgi.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     header: Header,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `HEADER_LEN`
[INFO] [stdout]    --> src/fastcgi.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     const HEADER_LEN: usize = 8;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `ABORT_REQUEST`
[INFO] [stdout]    --> src/fastcgi.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     const ABORT_REQUEST: u8 = 2;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `END_REQUEST`
[INFO] [stdout]    --> src/fastcgi.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |     const END_REQUEST: u8 = 3;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `STDOUT`
[INFO] [stdout]    --> src/fastcgi.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 138 |     const STDOUT: u8 = 6;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `STDERR`
[INFO] [stdout]    --> src/fastcgi.rs:143:5
[INFO] [stdout]     |
[INFO] [stdout] 143 |     const STDERR: u8 = 7;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `DATA`
[INFO] [stdout]    --> src/fastcgi.rs:148:5
[INFO] [stdout]     |
[INFO] [stdout] 148 |     const DATA: u8 = 8;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `UNKNOWN_TYPE`
[INFO] [stdout]    --> src/fastcgi.rs:165:5
[INFO] [stdout]     |
[INFO] [stdout] 165 |     const UNKNOWN_TYPE: u8 = 11;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_into`
[INFO] [stdout]    --> src/fastcgi.rs:315:8
[INFO] [stdout]     |
[INFO] [stdout] 315 |     fn write_into(self, data: &mut BytesMut)
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]    --> src/fastcgi.rs:325:8
[INFO] [stdout]     |
[INFO] [stdout] 325 |     fn parse(data: &mut Bytes) -> Header
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `RecordReader`
[INFO] [stdout]    --> src/fastcgi.rs:361:19
[INFO] [stdout]     |
[INFO] [stdout] 361 | pub(crate) struct RecordReader {
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/fastcgi.rs:366:19
[INFO] [stdout]     |
[INFO] [stdout] 366 |     pub(crate) fn new() -> RecordReader {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]    --> src/fastcgi.rs:371:19
[INFO] [stdout]     |
[INFO] [stdout] 371 |     pub(crate) fn read(&mut self, data: &mut Bytes) -> Option<Record>
[INFO] [stdout]     |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_request_id`
[INFO] [stdout]    --> src/fastcgi.rs:433:19
[INFO] [stdout]     |
[INFO] [stdout] 433 |     pub(crate) fn get_request_id(&self) -> u16 {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]    --> src/fastcgi.rs:438:19
[INFO] [stdout]     |
[INFO] [stdout] 438 |     pub(crate) fn read(data: &mut Bytes) -> Option<Record>
[INFO] [stdout]     |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_body`
[INFO] [stdout]    --> src/fastcgi.rs:459:8
[INFO] [stdout]     |
[INFO] [stdout] 459 |     fn parse_body(mut payload: Bytes, ptype: u8) -> Body {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `abort`
[INFO] [stdout]    --> src/fastcgi.rs:478:19
[INFO] [stdout]     |
[INFO] [stdout] 478 |     pub(crate) fn abort(request_id: u16) -> Record {
[INFO] [stdout]     |                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append`
[INFO] [stdout]    --> src/fastcgi.rs:491:19
[INFO] [stdout]     |
[INFO] [stdout] 491 |     pub(crate) fn append(self, buf: &mut BufList<Bytes>)
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_bytes`
[INFO] [stdout]    --> src/fastcgi.rs:618:19
[INFO] [stdout]     |
[INFO] [stdout] 618 |     pub(crate) fn from_bytes(buf: Bytes) -> NVBody {
[INFO] [stdout]     |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append_records`
[INFO] [stdout]    --> src/fastcgi.rs:661:19
[INFO] [stdout]     |
[INFO] [stdout] 661 |     pub(crate) fn append_records(self, rtype: u8, request_id: u16, wbuf: &mut BufList<Bytes>) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_into`
[INFO] [stdout]    --> src/fastcgi.rs:689:8
[INFO] [stdout]     |
[INFO] [stdout] 689 |     fn write_into(self, data: &mut BytesMut)
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]    --> src/fastcgi.rs:701:8
[INFO] [stdout]     |
[INFO] [stdout] 701 |     fn parse(mut data: Bytes) -> EndRequestBody
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append`
[INFO] [stdout]   --> src/bufvec.rs:28:19
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub(crate) fn append(&mut self, mut other: BufList<T>) {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `oldest`
[INFO] [stdout]   --> src/bufvec.rs:32:19
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub(crate) fn oldest(&mut self) -> Option<T> {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.3.15
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking futures-util v0.3.6
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking hyper v0.13.8
[INFO] [stdout] warning: field is never read: `rtype`
[INFO] [stdout]   --> src/fastcgi.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     rtype: u8,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `ABORT_REQUEST`
[INFO] [stdout]    --> src/fastcgi.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     const ABORT_REQUEST: u8 = 2;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `END_REQUEST`
[INFO] [stdout]    --> src/fastcgi.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |     const END_REQUEST: u8 = 3;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `STDOUT`
[INFO] [stdout]    --> src/fastcgi.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 138 |     const STDOUT: u8 = 6;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `STDERR`
[INFO] [stdout]    --> src/fastcgi.rs:143:5
[INFO] [stdout]     |
[INFO] [stdout] 143 |     const STDERR: u8 = 7;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `DATA`
[INFO] [stdout]    --> src/fastcgi.rs:148:5
[INFO] [stdout]     |
[INFO] [stdout] 148 |     const DATA: u8 = 8;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `UNKNOWN_TYPE`
[INFO] [stdout]    --> src/fastcgi.rs:165:5
[INFO] [stdout]     |
[INFO] [stdout] 165 |     const UNKNOWN_TYPE: u8 = 11;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]    --> src/fastcgi.rs:325:8
[INFO] [stdout]     |
[INFO] [stdout] 325 |     fn parse(data: &mut Bytes) -> Header
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `RecordReader`
[INFO] [stdout]    --> src/fastcgi.rs:361:19
[INFO] [stdout]     |
[INFO] [stdout] 361 | pub(crate) struct RecordReader {
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/fastcgi.rs:366:19
[INFO] [stdout]     |
[INFO] [stdout] 366 |     pub(crate) fn new() -> RecordReader {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]    --> src/fastcgi.rs:371:19
[INFO] [stdout]     |
[INFO] [stdout] 371 |     pub(crate) fn read(&mut self, data: &mut Bytes) -> Option<Record>
[INFO] [stdout]     |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_request_id`
[INFO] [stdout]    --> src/fastcgi.rs:433:19
[INFO] [stdout]     |
[INFO] [stdout] 433 |     pub(crate) fn get_request_id(&self) -> u16 {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]    --> src/fastcgi.rs:438:19
[INFO] [stdout]     |
[INFO] [stdout] 438 |     pub(crate) fn read(data: &mut Bytes) -> Option<Record>
[INFO] [stdout]     |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_body`
[INFO] [stdout]    --> src/fastcgi.rs:459:8
[INFO] [stdout]     |
[INFO] [stdout] 459 |     fn parse_body(mut payload: Bytes, ptype: u8) -> Body {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `abort`
[INFO] [stdout]    --> src/fastcgi.rs:478:19
[INFO] [stdout]     |
[INFO] [stdout] 478 |     pub(crate) fn abort(request_id: u16) -> Record {
[INFO] [stdout]     |                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_bytes`
[INFO] [stdout]    --> src/fastcgi.rs:618:19
[INFO] [stdout]     |
[INFO] [stdout] 618 |     pub(crate) fn from_bytes(buf: Bytes) -> NVBody {
[INFO] [stdout]     |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append_records`
[INFO] [stdout]    --> src/fastcgi.rs:661:19
[INFO] [stdout]     |
[INFO] [stdout] 661 |     pub(crate) fn append_records(self, rtype: u8, request_id: u16, wbuf: &mut BufList<Bytes>) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]    --> src/fastcgi.rs:701:8
[INFO] [stdout]     |
[INFO] [stdout] 701 |     fn parse(mut data: Bytes) -> EndRequestBody
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `oldest`
[INFO] [stdout]   --> src/bufvec.rs:32:19
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub(crate) fn oldest(&mut self) -> Option<T> {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.08s
[INFO] running `Command { std: "docker" "inspect" "7affe9ab076ebdfc192cc9ab1dcabfb57ef5c01d06afb57fedc3fe78602176d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7affe9ab076ebdfc192cc9ab1dcabfb57ef5c01d06afb57fedc3fe78602176d5", kill_on_drop: false }`
[INFO] [stdout] 7affe9ab076ebdfc192cc9ab1dcabfb57ef5c01d06afb57fedc3fe78602176d5