[INFO] cloning repository https://github.com/sunsided/yeet-yoink
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sunsided/yeet-yoink" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunsided%2Fyeet-yoink", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunsided%2Fyeet-yoink'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91750f5b659dc9c89a1ad238786752632e320f4b
[INFO] testing sunsided/yeet-yoink/91750f5b659dc9c89a1ad238786752632e320f4b against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunsided%2Fyeet-yoink" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sunsided/yeet-yoink
[INFO] finished tweaking git repo https://github.com/sunsided/yeet-yoink
[INFO] tweaked toml for git repo https://github.com/sunsided/yeet-yoink written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sunsided/yeet-yoink on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sunsided/yeet-yoink 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ba52881bbeac71da749b3a4156fef0a212ca4af9abd25ca2a897853111a1ff3
[INFO] running `Command { std: "docker" "start" "-a" "5ba52881bbeac71da749b3a4156fef0a212ca4af9abd25ca2a897853111a1ff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ba52881bbeac71da749b3a4156fef0a212ca4af9abd25ca2a897853111a1ff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ba52881bbeac71da749b3a4156fef0a212ca4af9abd25ca2a897853111a1ff3", kill_on_drop: false }`
[INFO] [stdout] 5ba52881bbeac71da749b3a4156fef0a212ca4af9abd25ca2a897853111a1ff3
[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=forbid -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22bf79462f358eb9e38e9d1a673706b2122d93ae5c3c10464693228f72b132f8
[INFO] running `Command { std: "docker" "start" "-a" "22bf79462f358eb9e38e9d1a673706b2122d93ae5c3c10464693228f72b132f8", kill_on_drop: false }`
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[INFO] [stderr]    Compiling file-distribution v0.1.0 (/opt/rustwide/workdir/crates/file-distribution)
[INFO] [stderr]    Compiling icu_normalizer v1.5.0
[INFO] [stderr]    Compiling toml_datetime v0.6.6
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[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> crates/file-distribution/src/file_reader.rs:16:21
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn content_type(&self) -> Option<Cow<str>>;
[INFO] [stdout]    |                     ^^^^^            -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn content_type(&self) -> Option<Cow<'_, str>>;
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> crates/file-distribution/src/file_reader.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn content_type(&self) -> Option<Cow<str>> {
[INFO] [stdout]    |                     ^^^^^            -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn content_type(&self) -> Option<Cow<'_, str>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling url v2.5.3
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[INFO] [stderr]    Compiling toml v0.8.14
[INFO] [stderr]    Compiling config v0.14.1
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[INFO] [stderr]    Compiling memcache v0.18.0
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[INFO] [stderr]    Compiling app-config v0.1.0 (/opt/rustwide/workdir/crates/app-config)
[INFO] [stderr]    Compiling backend-traits v0.1.0 (/opt/rustwide/workdir/crates/backend-traits)
[INFO] [stderr]    Compiling backend-memcache v0.1.0 (/opt/rustwide/workdir/crates/backend-memcache)
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[INFO] [stderr]    Compiling problemdetails v0.2.1
[INFO] [stderr]    Compiling backbone v0.1.0 (/opt/rustwide/workdir/crates/backbone)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> crates/backbone/src/file_reader.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn content_type(&self) -> Option<Cow<str>> {
[INFO] [stdout]    |                         ^^^^^            -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn content_type(&self) -> Option<Cow<'_, str>> {
[INFO] [stdout]    |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> crates/backbone/src/file_reader.rs:80:21
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn content_type(&self) -> Option<Cow<str>> {
[INFO] [stdout]    |                     ^^^^^            -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn content_type(&self) -> Option<Cow<'_, str>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling yeet-yoink v0.1.1-unstable.2 (/opt/rustwide/workdir/bins/server)
[INFO] [stdout] warning: field `handle` is never read
[INFO] [stdout]   --> bins/server/src/backend_registry.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct BackendRegistry {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] 17 |     handle: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `join` is never used
[INFO] [stdout]   --> bins/server/src/backend_registry.rs:51:18
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl BackendRegistry {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub async fn join(self) -> Result<(), JoinError> {
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10m 39s
[INFO] running `Command { std: "docker" "inspect" "22bf79462f358eb9e38e9d1a673706b2122d93ae5c3c10464693228f72b132f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22bf79462f358eb9e38e9d1a673706b2122d93ae5c3c10464693228f72b132f8", kill_on_drop: false }`
[INFO] [stdout] 22bf79462f358eb9e38e9d1a673706b2122d93ae5c3c10464693228f72b132f8
[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=forbid -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2a2887265e31a40a4b16e46685c58a1ed767787c131c74a0b4fcda747b8c56f
[INFO] running `Command { std: "docker" "start" "-a" "b2a2887265e31a40a4b16e46685c58a1ed767787c131c74a0b4fcda747b8c56f", kill_on_drop: false }`
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> crates/file-distribution/src/file_reader.rs:16:21
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn content_type(&self) -> Option<Cow<str>>;
[INFO] [stdout]    |                     ^^^^^            -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn content_type(&self) -> Option<Cow<'_, str>>;
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> crates/file-distribution/src/file_reader.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn content_type(&self) -> Option<Cow<str>> {
[INFO] [stdout]    |                     ^^^^^            -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn content_type(&self) -> Option<Cow<'_, str>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.11
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> crates/backbone/src/file_reader.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn content_type(&self) -> Option<Cow<str>> {
[INFO] [stdout]    |                         ^^^^^            -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn content_type(&self) -> Option<Cow<'_, str>> {
[INFO] [stdout]    |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> crates/backbone/src/file_reader.rs:80:21
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn content_type(&self) -> Option<Cow<str>> {
[INFO] [stdout]    |                     ^^^^^            -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn content_type(&self) -> Option<Cow<'_, str>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_yaml v0.9.34+deprecated
[INFO] [stderr]    Compiling yeet-yoink v0.1.1-unstable.2 (/opt/rustwide/workdir/bins/server)
[INFO] [stdout] warning: field `handle` is never read
[INFO] [stdout]   --> bins/server/src/backend_registry.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct BackendRegistry {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] 17 |     handle: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `join` is never used
[INFO] [stdout]   --> bins/server/src/backend_registry.rs:51:18
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl BackendRegistry {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub async fn join(self) -> Result<(), JoinError> {
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.20s
[INFO] running `Command { std: "docker" "inspect" "b2a2887265e31a40a4b16e46685c58a1ed767787c131c74a0b4fcda747b8c56f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2a2887265e31a40a4b16e46685c58a1ed767787c131c74a0b4fcda747b8c56f", kill_on_drop: false }`
[INFO] [stdout] b2a2887265e31a40a4b16e46685c58a1ed767787c131c74a0b4fcda747b8c56f
[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=forbid -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 03a1eb0f38bd12ca5d824f6fbacb03595e59a5003278f20f23ae82fed24f2d31
[INFO] running `Command { std: "docker" "start" "-a" "03a1eb0f38bd12ca5d824f6fbacb03595e59a5003278f20f23ae82fed24f2d31", kill_on_drop: false }`
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> crates/file-distribution/src/file_reader.rs:16:21
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn content_type(&self) -> Option<Cow<str>>;
[INFO] [stderr]    |                     ^^^^^            -------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn content_type(&self) -> Option<Cow<'_, str>>;
[INFO] [stderr]    |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> crates/file-distribution/src/file_reader.rs:34:21
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn content_type(&self) -> Option<Cow<str>> {
[INFO] [stderr]    |                     ^^^^^            -------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn content_type(&self) -> Option<Cow<'_, str>> {
[INFO] [stderr]    |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: `file-distribution` (lib) generated 2 warnings
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> crates/backbone/src/file_reader.rs:56:25
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn content_type(&self) -> Option<Cow<str>> {
[INFO] [stderr]    |                         ^^^^^            -------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn content_type(&self) -> Option<Cow<'_, str>> {
[INFO] [stderr]    |                                              +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> crates/backbone/src/file_reader.rs:80:21
[INFO] [stderr]    |
[INFO] [stderr] 80 |     fn content_type(&self) -> Option<Cow<str>> {
[INFO] [stderr]    |                     ^^^^^            -------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 80 |     fn content_type(&self) -> Option<Cow<'_, str>> {
[INFO] [stderr]    |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: `backbone` (lib) generated 2 warnings
[INFO] [stderr] warning: field `handle` is never read
[INFO] [stderr]   --> bins/server/src/backend_registry.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub struct BackendRegistry {
[INFO] [stderr]    |            --------------- field in this struct
[INFO] [stderr] 17 |     handle: JoinHandle<()>,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `join` is never used
[INFO] [stderr]   --> bins/server/src/backend_registry.rs:51:18
[INFO] [stderr]    |
[INFO] [stderr] 21 | impl BackendRegistry {
[INFO] [stderr]    | -------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 51 |     pub async fn join(self) -> Result<(), JoinError> {
[INFO] [stderr]    |                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `yeet-yoink` (bin "yeet-yoink" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/yeet_yoink-e401bc30b55252f5)
[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" "03a1eb0f38bd12ca5d824f6fbacb03595e59a5003278f20f23ae82fed24f2d31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03a1eb0f38bd12ca5d824f6fbacb03595e59a5003278f20f23ae82fed24f2d31", kill_on_drop: false }`
[INFO] [stdout] 03a1eb0f38bd12ca5d824f6fbacb03595e59a5003278f20f23ae82fed24f2d31
