[INFO] cloning repository https://github.com/SirGFM/rusty-but-fast
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SirGFM/rusty-but-fast" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirGFM%2Frusty-but-fast", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirGFM%2Frusty-but-fast'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 65a81cd60661abd7c448d05c355f69fcbff6d5c5
[INFO] testing SirGFM/rusty-but-fast against 1.83.0 for beta-1.84.0-4-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirGFM%2Frusty-but-fast" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SirGFM/rusty-but-fast on toolchain 1.83.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SirGFM/rusty-but-fast
[INFO] finished tweaking git repo https://github.com/SirGFM/rusty-but-fast
[INFO] tweaked toml for git repo https://github.com/SirGFM/rusty-but-fast written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SirGFM/rusty-but-fast 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" "+1.83.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ctrlc v3.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1.83.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2863fecfba64ceff685670c577506b21aa63a6a5e4b977d9d24abc3d3c6ccc7
[INFO] running `Command { std: "docker" "start" "-a" "e2863fecfba64ceff685670c577506b21aa63a6a5e4b977d9d24abc3d3c6ccc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2863fecfba64ceff685670c577506b21aa63a6a5e4b977d9d24abc3d3c6ccc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2863fecfba64ceff685670c577506b21aa63a6a5e4b977d9d24abc3d3c6ccc7", kill_on_drop: false }`
[INFO] [stdout] e2863fecfba64ceff685670c577506b21aa63a6a5e4b977d9d24abc3d3c6ccc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec794f687b367cdfbc15632a17c6e4863cacf6e6384859c172b8d10bf3e13217
[INFO] running `Command { std: "docker" "start" "-a" "ec794f687b367cdfbc15632a17c6e4863cacf6e6384859c172b8d10bf3e13217", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ctrlc v3.1.4
[INFO] [stderr]    Compiling rusty-but-fast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/tlv.rs:269:21
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 let tag = Tag::from(*t);
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `now`
[INFO] [stdout]    --> src/timer.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |     let now = time::Instant::now();
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_now`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:310:17
[INFO] [stdout]     |
[INFO] [stdout] 310 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:322:21
[INFO] [stdout]     |
[INFO] [stdout] 322 |                 Err(err) => {
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/timer.rs:309:16
[INFO] [stdout]     |
[INFO] [stdout] 309 |             Ok(mut ok_data) => ok_data,
[INFO] [stdout]     |                ----^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/timer.rs:321:20
[INFO] [stdout]     |
[INFO] [stdout] 321 |                 Ok(mut ok_data) => ok_data,
[INFO] [stdout]     |                    ----^^^^^^^
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:338:17
[INFO] [stdout]     |
[INFO] [stdout] 338 |             Err(err) => return Err(Error::BadMessageTag),
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:351:17
[INFO] [stdout]     |
[INFO] [stdout] 351 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:377:17
[INFO] [stdout]     |
[INFO] [stdout] 377 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:403:13
[INFO] [stdout]     |
[INFO] [stdout] 403 |         Err(err) => {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:425:21
[INFO] [stdout]     |
[INFO] [stdout] 425 |                 Err(err) => {
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:437:13
[INFO] [stdout]     |
[INFO] [stdout] 437 |         Err(err) => {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:485:13
[INFO] [stdout]     |
[INFO] [stdout] 485 |         Err(err) => return Err(res.unwrap_err()),
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:489:13
[INFO] [stdout]     |
[INFO] [stdout] 489 |         Err(err) => {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:496:13
[INFO] [stdout]     |
[INFO] [stdout] 496 |         Err(err) => {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read_arr` is never used
[INFO] [stdout]    --> src/tlv.rs:704:8
[INFO] [stdout]     |
[INFO] [stdout] 701 | impl<'a: 'b, 'b> TagParser<'a, 'b> {
[INFO] [stdout]     | ---------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 704 |     fn read_arr<T>(&mut self, out: &mut [T])
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::ErrorKind::WouldBlock as ErrWouldBlock`
[INFO] [stdout]   --> src/bin/timer_server.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     use std::io::ErrorKind::WouldBlock as ErrWouldBlock;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.78s
[INFO] running `Command { std: "docker" "inspect" "ec794f687b367cdfbc15632a17c6e4863cacf6e6384859c172b8d10bf3e13217", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec794f687b367cdfbc15632a17c6e4863cacf6e6384859c172b8d10bf3e13217", kill_on_drop: false }`
[INFO] [stdout] ec794f687b367cdfbc15632a17c6e4863cacf6e6384859c172b8d10bf3e13217
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f0618cb36b2fffe3d6c9b73d434d7baaea35fd0057ab1e207b1c97371625369
[INFO] running `Command { std: "docker" "start" "-a" "0f0618cb36b2fffe3d6c9b73d434d7baaea35fd0057ab1e207b1c97371625369", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/tlv.rs:269:21
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 let tag = Tag::from(*t);
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `now`
[INFO] [stdout]    --> src/timer.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |     let now = time::Instant::now();
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_now`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:310:17
[INFO] [stdout]     |
[INFO] [stdout] 310 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:322:21
[INFO] [stdout]     |
[INFO] [stdout] 322 |                 Err(err) => {
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/timer.rs:309:16
[INFO] [stdout]     |
[INFO] [stdout] 309 |             Ok(mut ok_data) => ok_data,
[INFO] [stdout]     |                ----^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/timer.rs:321:20
[INFO] [stdout]     |
[INFO] [stdout] 321 |                 Ok(mut ok_data) => ok_data,
[INFO] [stdout]     |                    ----^^^^^^^
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:338:17
[INFO] [stdout]     |
[INFO] [stdout] 338 |             Err(err) => return Err(Error::BadMessageTag),
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:351:17
[INFO] [stdout]     |
[INFO] [stdout] 351 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:377:17
[INFO] [stdout]     |
[INFO] [stdout] 377 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:403:13
[INFO] [stdout]     |
[INFO] [stdout] 403 |         Err(err) => {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rusty-but-fast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:425:21
[INFO] [stdout]     |
[INFO] [stdout] 425 |                 Err(err) => {
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:437:13
[INFO] [stdout]     |
[INFO] [stdout] 437 |         Err(err) => {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:485:13
[INFO] [stdout]     |
[INFO] [stdout] 485 |         Err(err) => return Err(res.unwrap_err()),
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:489:13
[INFO] [stdout]     |
[INFO] [stdout] 489 |         Err(err) => {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:496:13
[INFO] [stdout]     |
[INFO] [stdout] 496 |         Err(err) => {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read_arr` is never used
[INFO] [stdout]    --> src/tlv.rs:704:8
[INFO] [stdout]     |
[INFO] [stdout] 701 | impl<'a: 'b, 'b> TagParser<'a, 'b> {
[INFO] [stdout]     | ---------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 704 |     fn read_arr<T>(&mut self, out: &mut [T])
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::ErrorKind::WouldBlock as ErrWouldBlock`
[INFO] [stdout]   --> src/bin/timer_server.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     use std::io::ErrorKind::WouldBlock as ErrWouldBlock;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/tlv.rs:269:21
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 let tag = Tag::from(*t);
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `now`
[INFO] [stdout]    --> src/timer.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |     let now = time::Instant::now();
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_now`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:310:17
[INFO] [stdout]     |
[INFO] [stdout] 310 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:322:21
[INFO] [stdout]     |
[INFO] [stdout] 322 |                 Err(err) => {
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/timer.rs:309:16
[INFO] [stdout]     |
[INFO] [stdout] 309 |             Ok(mut ok_data) => ok_data,
[INFO] [stdout]     |                ----^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/timer.rs:321:20
[INFO] [stdout]     |
[INFO] [stdout] 321 |                 Ok(mut ok_data) => ok_data,
[INFO] [stdout]     |                    ----^^^^^^^
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:338:17
[INFO] [stdout]     |
[INFO] [stdout] 338 |             Err(err) => return Err(Error::BadMessageTag),
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:351:17
[INFO] [stdout]     |
[INFO] [stdout] 351 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:377:17
[INFO] [stdout]     |
[INFO] [stdout] 377 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:403:13
[INFO] [stdout]     |
[INFO] [stdout] 403 |         Err(err) => {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:425:21
[INFO] [stdout]     |
[INFO] [stdout] 425 |                 Err(err) => {
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:437:13
[INFO] [stdout]     |
[INFO] [stdout] 437 |         Err(err) => {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:485:13
[INFO] [stdout]     |
[INFO] [stdout] 485 |         Err(err) => return Err(res.unwrap_err()),
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:489:13
[INFO] [stdout]     |
[INFO] [stdout] 489 |         Err(err) => {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/timer.rs:496:13
[INFO] [stdout]     |
[INFO] [stdout] 496 |         Err(err) => {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "0f0618cb36b2fffe3d6c9b73d434d7baaea35fd0057ab1e207b1c97371625369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f0618cb36b2fffe3d6c9b73d434d7baaea35fd0057ab1e207b1c97371625369", kill_on_drop: false }`
[INFO] [stdout] 0f0618cb36b2fffe3d6c9b73d434d7baaea35fd0057ab1e207b1c97371625369
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 87e6a9429f0513cc8632b36300ae2ab162dc319651794dbdc9786f50e3a12f14
[INFO] running `Command { std: "docker" "start" "-a" "87e6a9429f0513cc8632b36300ae2ab162dc319651794dbdc9786f50e3a12f14", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `tag`
[INFO] [stderr]    --> src/tlv.rs:269:21
[INFO] [stderr]     |
[INFO] [stderr] 269 |                 let tag = Tag::from(*t);
[INFO] [stderr]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `now`
[INFO] [stderr]    --> src/timer.rs:195:9
[INFO] [stderr]     |
[INFO] [stderr] 195 |     let now = time::Instant::now();
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_now`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/timer.rs:310:17
[INFO] [stderr]     |
[INFO] [stderr] 310 |             Err(err) => {
[INFO] [stderr]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/timer.rs:322:21
[INFO] [stderr]     |
[INFO] [stderr] 322 |                 Err(err) => {
[INFO] [stderr]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/timer.rs:309:16
[INFO] [stderr]     |
[INFO] [stderr] 309 |             Ok(mut ok_data) => ok_data,
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/timer.rs:321:20
[INFO] [stderr]     |
[INFO] [stderr] 321 |                 Ok(mut ok_data) => ok_data,
[INFO] [stderr]     |                    ----^^^^^^^
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/timer.rs:338:17
[INFO] [stderr]     |
[INFO] [stderr] 338 |             Err(err) => return Err(Error::BadMessageTag),
[INFO] [stderr]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/timer.rs:351:17
[INFO] [stderr]     |
[INFO] [stderr] 351 |             Err(err) => {
[INFO] [stderr]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/timer.rs:377:17
[INFO] [stderr]     |
[INFO] [stderr] 377 |             Err(err) => {
[INFO] [stderr]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/timer.rs:403:13
[INFO] [stderr]     |
[INFO] [stderr] 403 |         Err(err) => {
[INFO] [stderr]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/timer.rs:425:21
[INFO] [stderr]     |
[INFO] [stderr] 425 |                 Err(err) => {
[INFO] [stderr]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/timer.rs:437:13
[INFO] [stderr]     |
[INFO] [stderr] 437 |         Err(err) => {
[INFO] [stderr]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/timer.rs:485:13
[INFO] [stderr]     |
[INFO] [stderr] 485 |         Err(err) => return Err(res.unwrap_err()),
[INFO] [stderr]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/timer.rs:489:13
[INFO] [stderr]     |
[INFO] [stderr] 489 |         Err(err) => {
[INFO] [stderr]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/timer.rs:496:13
[INFO] [stderr]     |
[INFO] [stderr] 496 |         Err(err) => {
[INFO] [stderr]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: method `read_arr` is never used
[INFO] [stderr]    --> src/tlv.rs:704:8
[INFO] [stderr]     |
[INFO] [stderr] 701 | impl<'a: 'b, 'b> TagParser<'a, 'b> {
[INFO] [stderr]     | ---------------------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 704 |     fn read_arr<T>(&mut self, out: &mut [T])
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rusty-but-fast` (lib) generated 16 warnings (run `cargo fix --lib -p rusty-but-fast` to apply 2 suggestions)
[INFO] [stderr] warning: `rusty-but-fast` (lib test) generated 15 warnings (15 duplicates)
[INFO] [stderr] warning: unused import: `std::io::ErrorKind::WouldBlock as ErrWouldBlock`
[INFO] [stderr]   --> src/bin/timer_server.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     use std::io::ErrorKind::WouldBlock as ErrWouldBlock;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rusty-but-fast` (bin "timer_server" test) generated 1 warning (run `cargo fix --bin "timer_server" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rusty_but_fast-f5d7d6f4b9c9333f)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tlv::test::encode_example ... ok
[INFO] [stdout] test tlv::test::encode_test ... ok
[INFO] [stdout] test tlv::test::buf2tag ... ok
[INFO] [stdout] test tlv::test::try_from_example ... ok
[INFO] [stdout] test tlv::test::tag_eq ... ok
[INFO] [stderr]      Running unittests src/bin/timer_client.rs (/opt/rustwide/target/debug/deps/timer_client-7a69d2a678e10d8f)
[INFO] [stdout] test timer::test::spawn_timer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/timer_server.rs (/opt/rustwide/target/debug/deps/timer_server-fd678731a3c36c06)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "87e6a9429f0513cc8632b36300ae2ab162dc319651794dbdc9786f50e3a12f14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87e6a9429f0513cc8632b36300ae2ab162dc319651794dbdc9786f50e3a12f14", kill_on_drop: false }`
[INFO] [stdout] 87e6a9429f0513cc8632b36300ae2ab162dc319651794dbdc9786f50e3a12f14
