[INFO] cloning repository https://github.com/AbdoViper23/halaqa-Save
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AbdoViper23/halaqa-Save" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbdoViper23%2Fhalaqa-Save", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbdoViper23%2Fhalaqa-Save'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dbf8a2446dc696afaf2e77535914fcd664ebc941
[INFO] testing AbdoViper23/halaqa-Save against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbdoViper23%2Fhalaqa-Save" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AbdoViper23/halaqa-Save
[INFO] finished tweaking git repo https://github.com/AbdoViper23/halaqa-Save
[INFO] tweaked toml for git repo https://github.com/AbdoViper23/halaqa-Save written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AbdoViper23/halaqa-Save on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AbdoViper23/halaqa-Save 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b48822070468d3359c5f5f9e18541f66792d2994fa2a4b9241a109ac4b459d78
[INFO] running `Command { std: "docker" "start" "-a" "b48822070468d3359c5f5f9e18541f66792d2994fa2a4b9241a109ac4b459d78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b48822070468d3359c5f5f9e18541f66792d2994fa2a4b9241a109ac4b459d78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b48822070468d3359c5f5f9e18541f66792d2994fa2a4b9241a109ac4b459d78", kill_on_drop: false }`
[INFO] [stdout] b48822070468d3359c5f5f9e18541f66792d2994fa2a4b9241a109ac4b459d78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9242c66f6f061077c28cfc7e55155a5ee8203401125f834d4592eed4fb62543d
[INFO] running `Command { std: "docker" "start" "-a" "9242c66f6f061077c28cfc7e55155a5ee8203401125f834d4592eed4fb62543d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling cc v1.2.34
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling rustversion v1.0.22
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling typed-arena v2.0.2
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling pretty v0.12.4
[INFO] [stderr]    Compiling leb128 v0.2.5
[INFO] [stderr]    Compiling ic-cdk-executor v0.1.0
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling slotmap v1.0.7
[INFO] [stderr]    Compiling ic0 v0.23.0
[INFO] [stderr]    Compiling psm v0.1.26
[INFO] [stderr]    Compiling stacker v0.1.21
[INFO] [stderr]    Compiling binread_derive v2.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling candid_derive v0.10.17
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling binread v2.2.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling ic_principal v0.1.1
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling serde_bytes v0.11.17
[INFO] [stderr]    Compiling serde_tokenstream v0.2.2
[INFO] [stderr]    Compiling ic-stable-structures v0.7.0
[INFO] [stderr]    Compiling candid v0.10.17
[INFO] [stderr]    Compiling ic-cdk-macros v0.17.2
[INFO] [stderr]    Compiling ic-cdk v0.17.2
[INFO] [stderr]    Compiling ic-cdk-timers v0.11.0
[INFO] [stderr]    Compiling Backend v0.1.0 (/opt/rustwide/workdir/Backend)
[INFO] [stdout] warning: crate `Backend` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `backend`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> Backend/src/lib.rs:154:17
[INFO] [stdout]     |
[INFO] [stdout] 154 |     fn to_bytes(&self) -> Cow<[u8]> {
[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] 154 |     fn to_bytes(&self) -> Cow<'_, [u8]> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> Backend/src/lib.rs:170:17
[INFO] [stdout]     |
[INFO] [stdout] 170 |     fn to_bytes(&self) -> Cow<[u8]> {
[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] 170 |     fn to_bytes(&self) -> Cow<'_, [u8]> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> Backend/src/lib.rs:186:17
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn to_bytes(&self) -> Cow<[u8]> {
[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] 186 |     fn to_bytes(&self) -> Cow<'_, [u8]> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> Backend/src/lib.rs:202:17
[INFO] [stdout]     |
[INFO] [stdout] 202 |     fn to_bytes(&self) -> Cow<[u8]> {
[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] 202 |     fn to_bytes(&self) -> Cow<'_, [u8]> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 46s
[INFO] running `Command { std: "docker" "inspect" "9242c66f6f061077c28cfc7e55155a5ee8203401125f834d4592eed4fb62543d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9242c66f6f061077c28cfc7e55155a5ee8203401125f834d4592eed4fb62543d", kill_on_drop: false }`
[INFO] [stdout] 9242c66f6f061077c28cfc7e55155a5ee8203401125f834d4592eed4fb62543d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee08b558f6882121f6dd360c74074358348fd9cad091851e201370948306f33d
[INFO] running `Command { std: "docker" "start" "-a" "ee08b558f6882121f6dd360c74074358348fd9cad091851e201370948306f33d", kill_on_drop: false }`
[INFO] [stderr]    Compiling Backend v0.1.0 (/opt/rustwide/workdir/Backend)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> Backend/src/lib.rs:154:17
[INFO] [stdout]     |
[INFO] [stdout] 154 |     fn to_bytes(&self) -> Cow<[u8]> {
[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] 154 |     fn to_bytes(&self) -> Cow<'_, [u8]> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> Backend/src/lib.rs:170:17
[INFO] [stdout]     |
[INFO] [stdout] 170 |     fn to_bytes(&self) -> Cow<[u8]> {
[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] 170 |     fn to_bytes(&self) -> Cow<'_, [u8]> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> Backend/src/lib.rs:186:17
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn to_bytes(&self) -> Cow<[u8]> {
[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] 186 |     fn to_bytes(&self) -> Cow<'_, [u8]> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> Backend/src/lib.rs:202:17
[INFO] [stdout]     |
[INFO] [stdout] 202 |     fn to_bytes(&self) -> Cow<[u8]> {
[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] 202 |     fn to_bytes(&self) -> Cow<'_, [u8]> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.19s
[INFO] running `Command { std: "docker" "inspect" "ee08b558f6882121f6dd360c74074358348fd9cad091851e201370948306f33d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee08b558f6882121f6dd360c74074358348fd9cad091851e201370948306f33d", kill_on_drop: false }`
[INFO] [stdout] ee08b558f6882121f6dd360c74074358348fd9cad091851e201370948306f33d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] be36920a25007c5c3d1f984367535c7b3459372cf32cbbef13bc2f9fba1d58bf
[INFO] running `Command { std: "docker" "start" "-a" "be36920a25007c5c3d1f984367535c7b3459372cf32cbbef13bc2f9fba1d58bf", kill_on_drop: false }`
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> Backend/src/lib.rs:154:17
[INFO] [stderr]     |
[INFO] [stderr] 154 |     fn to_bytes(&self) -> Cow<[u8]> {
[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] 154 |     fn to_bytes(&self) -> Cow<'_, [u8]> {
[INFO] [stderr]     |                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> Backend/src/lib.rs:170:17
[INFO] [stderr]     |
[INFO] [stderr] 170 |     fn to_bytes(&self) -> Cow<[u8]> {
[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] 170 |     fn to_bytes(&self) -> Cow<'_, [u8]> {
[INFO] [stderr]     |                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> Backend/src/lib.rs:186:17
[INFO] [stderr]     |
[INFO] [stderr] 186 |     fn to_bytes(&self) -> Cow<[u8]> {
[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] 186 |     fn to_bytes(&self) -> Cow<'_, [u8]> {
[INFO] [stderr]     |                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> Backend/src/lib.rs:202:17
[INFO] [stderr]     |
[INFO] [stderr] 202 |     fn to_bytes(&self) -> Cow<[u8]> {
[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] 202 |     fn to_bytes(&self) -> Cow<'_, [u8]> {
[INFO] [stderr]     |                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: `Backend` (lib test) generated 4 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/Backend-e646f103d5c62e4e)
[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" "be36920a25007c5c3d1f984367535c7b3459372cf32cbbef13bc2f9fba1d58bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be36920a25007c5c3d1f984367535c7b3459372cf32cbbef13bc2f9fba1d58bf", kill_on_drop: false }`
[INFO] [stdout] be36920a25007c5c3d1f984367535c7b3459372cf32cbbef13bc2f9fba1d58bf
