[INFO] updating cached repository mzgoddard/bench-tessel-protocol
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mzgoddard/bench-tessel-protocol
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mzgoddard/bench-tessel-protocol" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/mzgoddard/bench-tessel-protocol"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/mzgoddard/bench-tessel-protocol'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mzgoddard/bench-tessel-protocol" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/mzgoddard/bench-tessel-protocol"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/mzgoddard/bench-tessel-protocol'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8c1f5d9c87fd3cbf8f23a0cb6c3448eb29109025
[INFO] sha for GitHub repo mzgoddard/bench-tessel-protocol: 8c1f5d9c87fd3cbf8f23a0cb6c3448eb29109025
[INFO] validating manifest of mzgoddard/bench-tessel-protocol on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mzgoddard/bench-tessel-protocol on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mzgoddard/bench-tessel-protocol
[INFO] finished frobbing mzgoddard/bench-tessel-protocol
[INFO] frobbed toml for mzgoddard/bench-tessel-protocol written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/mzgoddard/bench-tessel-protocol/Cargo.toml
[INFO] started frobbing mzgoddard/bench-tessel-protocol
[INFO] finished frobbing mzgoddard/bench-tessel-protocol
[INFO] frobbed toml for mzgoddard/bench-tessel-protocol written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/mzgoddard/bench-tessel-protocol/Cargo.toml
[INFO] crate mzgoddard/bench-tessel-protocol already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mzgoddard/bench-tessel-protocol against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-3/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/mzgoddard/bench-tessel-protocol:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2aa9c05792148d1ad90b5eae3572036e5b8e4a6f20f5aeff08ed27570d22f71d
[INFO] running `"docker" "start" "-a" "2aa9c05792148d1ad90b5eae3572036e5b8e4a6f20f5aeff08ed27570d22f71d"`
[INFO] [stderr]     Checking unix_socket v0.5.0
[INFO] [stderr]     Checking tessel v0.2.0
[INFO] [stderr]     Checking blinky v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/bin/process_stdio_pipes.rs:7:26
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::time::{Instant, Duration};
[INFO] [stderr]   |                          ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `sleep`, `yield_now`
[INFO] [stderr]  --> src/bin/process_stdio_pipes.rs:8:19
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::thread::{yield_now, sleep};
[INFO] [stderr]   |                   ^^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `UnixListener`, `UnixStream`
[INFO] [stderr]  --> src/bin/process_stdio_pipes.rs:9:26
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::os::unix::net::{UnixStream, UnixListener};
[INFO] [stderr]   |                          ^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::remove_file`
[INFO] [stderr]   --> src/bin/process_stdio_pipes.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::fs::remove_file;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `yield_now`
[INFO] [stderr]  --> src/bin/process_tcp_streamed.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::thread::{yield_now, sleep};
[INFO] [stderr]   |                   ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `UnixListener`, `UnixStream`
[INFO] [stderr]   --> src/bin/process_tcp_streamed.rs:10:26
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::os::unix::net::{UnixStream, UnixListener};
[INFO] [stderr]    |                          ^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::remove_file`
[INFO] [stderr]   --> src/bin/process_tcp_streamed.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::fs::remove_file;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/bin/process_stdio_pipes.rs:7:26
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::time::{Instant, Duration};
[INFO] [stderr]   |                          ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `sleep`, `yield_now`
[INFO] [stderr]  --> src/bin/process_stdio_pipes.rs:8:19
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::thread::{yield_now, sleep};
[INFO] [stderr]   |                   ^^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `UnixListener`, `UnixStream`
[INFO] [stderr]  --> src/bin/process_stdio_pipes.rs:9:26
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::os::unix::net::{UnixStream, UnixListener};
[INFO] [stderr]   |                          ^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::remove_file`
[INFO] [stderr]   --> src/bin/process_stdio_pipes.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::fs::remove_file;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::*`
[INFO] [stderr]  --> src/bin/process_kmod.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::iter::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `SeekFrom`, `Seek`
[INFO] [stderr]  --> src/bin/process_kmod.rs:7:28
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::{Write, Read, Seek, SeekFrom};
[INFO] [stderr]   |                            ^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `yield_now`
[INFO] [stderr]  --> src/bin/process_kmod.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::thread::{yield_now, sleep};
[INFO] [stderr]   |                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `UnixListener`, `UnixStream`
[INFO] [stderr]   --> src/bin/process_kmod.rs:10:26
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::os::unix::net::{UnixStream, UnixListener};
[INFO] [stderr]    |                          ^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::remove_file`
[INFO] [stderr]   --> src/bin/process_kmod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fs::remove_file;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]   --> src/bin/process_kmod.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::fs::{File, OpenOptions};
[INFO] [stderr]    |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env::args`
[INFO] [stderr]   --> src/bin/process_kmod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::env::args;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::Command`
[INFO] [stderr]   --> src/bin/process_kmod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::process::Command;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `yield_now`
[INFO] [stderr]   --> src/bin/process_unix_streamed_led.rs:14:19
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::thread::{yield_now, sleep};
[INFO] [stderr]    |                   ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]   --> src/bin/process_unix_streamed_led.rs:17:15
[INFO] [stderr]    |
[INFO] [stderr] 17 | use std::fs::{File, OpenOptions};
[INFO] [stderr]    |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::*`
[INFO] [stderr]  --> src/bin/baseline_unixstream.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::iter::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] warning: unused import: `yield_now`
[INFO] [stderr]   --> src/bin/process_unix_streamed_led.rs:14:19
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::thread::{yield_now, sleep};
[INFO] [stderr]    |                   ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]   --> src/bin/process_unix_streamed_led.rs:17:15
[INFO] [stderr]    |
[INFO] [stderr] 17 | use std::fs::{File, OpenOptions};
[INFO] [stderr]    |               ^^^^
[INFO] [stderr] 
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `yield_now`
[INFO] [stderr]  --> src/bin/baseline_unixstream.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::thread::{yield_now, sleep};
[INFO] [stderr]   |                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `UnixListener`
[INFO] [stderr]   --> src/bin/baseline_unixstream.rs:10:38
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::os::unix::net::{UnixStream, UnixListener};
[INFO] [stderr]    |                                      ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::remove_file`
[INFO] [stderr]   --> src/bin/baseline_unixstream.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fs::remove_file;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env::args`
[INFO] [stderr]   --> src/bin/baseline_unixstream.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::env::args;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::Command`
[INFO] [stderr]   --> src/bin/baseline_unixstream.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::process::Command;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cid`
[INFO] [stderr]   --> src/bin/process_tcp_streamed.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let cid = match &child { &Some(ref c) => c.id(), &None => 0 };
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_cid`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cid`
[INFO] [stderr]   --> src/bin/process_unix_streamed_led.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let cid = match &child { &Some(ref c) => c.id(), &None => 0 };
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_cid`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/process_tcp_streamed.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let mut l = TcpListener::bind("127.0.0.1:6767").unwrap();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cid`
[INFO] [stderr]   --> src/bin/process_unix_streamed_led.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let cid = match &child { &Some(ref c) => c.id(), &None => 0 };
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_cid`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `SeekFrom`, `Seek`
[INFO] [stderr]  --> src/bin/process_unix_streamed.rs:7:28
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::{Write, Read, Seek, SeekFrom};
[INFO] [stderr]   |                            ^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `yield_now`
[INFO] [stderr]  --> src/bin/process_unix_streamed.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::thread::{yield_now, sleep};
[INFO] [stderr]   |                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `File`, `OpenOptions`
[INFO] [stderr]   --> src/bin/process_unix_streamed.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::fs::{File, OpenOptions};
[INFO] [stderr]    |               ^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `SeekFrom`, `Seek`
[INFO] [stderr]  --> src/bin/process_unix_streamed.rs:7:28
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::{Write, Read, Seek, SeekFrom};
[INFO] [stderr]   |                            ^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `yield_now`
[INFO] [stderr]  --> src/bin/process_unix_streamed.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::thread::{yield_now, sleep};
[INFO] [stderr]   |                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `File`, `OpenOptions`
[INFO] [stderr]   --> src/bin/process_unix_streamed.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::fs::{File, OpenOptions};
[INFO] [stderr]    |               ^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/process_unix_streamed_led.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |         let mut l = UnixListener::bind("/tmp/bench_unixstream").unwrap();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/process_unix_streamed_led.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         remove_file("/tmp/bench_unixstream");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `yield_now`
[INFO] [stderr]  --> src/bin/process_tcp_streamed.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::thread::{yield_now, sleep};
[INFO] [stderr]   |                   ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `UnixListener`, `UnixStream`
[INFO] [stderr]   --> src/bin/process_tcp_streamed.rs:10:26
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::os::unix::net::{UnixStream, UnixListener};
[INFO] [stderr]    |                          ^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::remove_file`
[INFO] [stderr]   --> src/bin/process_tcp_streamed.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::fs::remove_file;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/process_unix_streamed_led.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |         let mut l = UnixListener::bind("/tmp/bench_unixstream").unwrap();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/process_unix_streamed_led.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         remove_file("/tmp/bench_unixstream");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::*`
[INFO] [stderr]  --> src/bin/baseline_unixstream.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::iter::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `yield_now`
[INFO] [stderr]  --> src/bin/baseline_unixstream.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::thread::{yield_now, sleep};
[INFO] [stderr]   |                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `UnixListener`
[INFO] [stderr]   --> src/bin/baseline_unixstream.rs:10:38
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::os::unix::net::{UnixStream, UnixListener};
[INFO] [stderr]    |                                      ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::remove_file`
[INFO] [stderr]   --> src/bin/baseline_unixstream.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fs::remove_file;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env::args`
[INFO] [stderr]   --> src/bin/baseline_unixstream.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::env::args;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::Command`
[INFO] [stderr]   --> src/bin/baseline_unixstream.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::process::Command;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cid`
[INFO] [stderr]   --> src/bin/process_unix_streamed.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let cid = match &child { &Some(ref c) => c.id(), &None => 0 };
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_cid`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/process_unix_streamed.rs:42:13
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let mut l = UnixListener::bind("/tmp/bench_unixstream").unwrap();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/process_unix_streamed.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |         remove_file("/tmp/bench_unixstream");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cid`
[INFO] [stderr]   --> src/bin/process_unix_streamed.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let cid = match &child { &Some(ref c) => c.id(), &None => 0 };
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_cid`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::*`
[INFO] [stderr]  --> src/bin/process_kmod.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::iter::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `SeekFrom`, `Seek`
[INFO] [stderr]  --> src/bin/process_kmod.rs:7:28
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::{Write, Read, Seek, SeekFrom};
[INFO] [stderr]   |                            ^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `yield_now`
[INFO] [stderr]  --> src/bin/process_kmod.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::thread::{yield_now, sleep};
[INFO] [stderr]   |                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `UnixListener`, `UnixStream`
[INFO] [stderr]   --> src/bin/process_kmod.rs:10:26
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::os::unix::net::{UnixStream, UnixListener};
[INFO] [stderr]    |                          ^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::remove_file`
[INFO] [stderr]   --> src/bin/process_kmod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fs::remove_file;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]   --> src/bin/process_kmod.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::fs::{File, OpenOptions};
[INFO] [stderr]    |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env::args`
[INFO] [stderr]   --> src/bin/process_kmod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::env::args;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::Command`
[INFO] [stderr]   --> src/bin/process_kmod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::process::Command;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/process_unix_streamed.rs:42:13
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let mut l = UnixListener::bind("/tmp/bench_unixstream").unwrap();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/process_unix_streamed.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |         remove_file("/tmp/bench_unixstream");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cid`
[INFO] [stderr]   --> src/bin/process_tcp_streamed.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let cid = match &child { &Some(ref c) => c.id(), &None => 0 };
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_cid`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/process_tcp_streamed.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let mut l = TcpListener::bind("127.0.0.1:6767").unwrap();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `"docker" "inspect" "2aa9c05792148d1ad90b5eae3572036e5b8e4a6f20f5aeff08ed27570d22f71d"`
[INFO] running `"docker" "rm" "-f" "2aa9c05792148d1ad90b5eae3572036e5b8e4a6f20f5aeff08ed27570d22f71d"`
[INFO] [stdout] 2aa9c05792148d1ad90b5eae3572036e5b8e4a6f20f5aeff08ed27570d22f71d