[INFO] cloning repository https://github.com/insomnimus/testing-finals-1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/insomnimus/testing-finals-1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finsomnimus%2Ftesting-finals-1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finsomnimus%2Ftesting-finals-1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 334fc2237975be5e6ec93a8ecd5cdc8177aef271
[INFO] checking insomnimus/testing-finals-1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finsomnimus%2Ftesting-finals-1" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/insomnimus/testing-finals-1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/insomnimus/testing-finals-1
[INFO] finished tweaking git repo https://github.com/insomnimus/testing-finals-1
[INFO] tweaked toml for git repo https://github.com/insomnimus/testing-finals-1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/insomnimus/testing-finals-1 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded temp-dir v0.1.11
[INFO] [stderr]   Downloaded snap v1.0.5
[INFO] [stderr]   Downloaded serde_derive v1.0.132
[INFO] [stderr]   Downloaded clap v3.0.0-rc.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9e71ed0eacd75c339ede3c0c9f6f8293e4e3c1720dbf2783ca94b42cd2782c8
[INFO] running `Command { std: "docker" "start" "-a" "b9e71ed0eacd75c339ede3c0c9f6f8293e4e3c1720dbf2783ca94b42cd2782c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9e71ed0eacd75c339ede3c0c9f6f8293e4e3c1720dbf2783ca94b42cd2782c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9e71ed0eacd75c339ede3c0c9f6f8293e4e3c1720dbf2783ca94b42cd2782c8", kill_on_drop: false }`
[INFO] [stdout] b9e71ed0eacd75c339ede3c0c9f6f8293e4e3c1720dbf2783ca94b42cd2782c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7fc4128d482a8319aaef37b94f659e5f9dbf3fe90bc76b5822e571514a6a5d2
[INFO] running `Command { std: "docker" "start" "-a" "d7fc4128d482a8319aaef37b94f659e5f9dbf3fe90bc76b5822e571514a6a5d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling syn v1.0.83
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.132
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling snap v1.0.5
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking temp-dir v0.1.11
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v3.0.0-rc.8
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking chat v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/client/tests.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |         Write,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `io` is imported redundantly
[INFO] [stdout]   --> src/client/tests.rs:4:3
[INFO] [stdout]    |
[INFO] [stdout] 4  |         self,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 | use super::*;
[INFO] [stdout]    |     -------- the item `io` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Cursor` is imported redundantly
[INFO] [stdout]   --> src/client/tests.rs:5:3
[INFO] [stdout]    |
[INFO] [stdout] 5  |         Cursor,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 | use super::*;
[INFO] [stdout]    |     -------- the item `Cursor` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `distributions::Alphanumeric`
[INFO] [stdout]   --> src/client/tests.rs:12:2
[INFO] [stdout]    |
[INFO] [stdout] 12 |     distributions::Alphanumeric,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write::FrameEncoder`
[INFO] [stdout]   --> src/client/tests.rs:18:2
[INFO] [stdout]    |
[INFO] [stdout] 18 |     write::FrameEncoder,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FrameDecoder` is imported redundantly
[INFO] [stdout]   --> src/client/tests.rs:17:2
[INFO] [stdout]    |
[INFO] [stdout] 17 |     read::FrameDecoder,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 | use super::*;
[INFO] [stdout]    |     -------- the item `FrameDecoder` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Header` is imported redundantly
[INFO] [stdout]   --> src/client/tests.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 22 | use super::*;
[INFO] [stdout]    |     -------- the item `Header` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 26 |         Header,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `HeaderKind` is imported redundantly
[INFO] [stdout]   --> src/client/tests.rs:27:3
[INFO] [stdout]    |
[INFO] [stdout] 22 | use super::*;
[INFO] [stdout]    |     -------- the item `HeaderKind` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 27 |         HeaderKind,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Error` is imported redundantly
[INFO] [stdout]   --> src/client/tests.rs:29:2
[INFO] [stdout]    |
[INFO] [stdout] 22 | use super::*;
[INFO] [stdout]    |     -------- the item `Error` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 29 |     Error,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]   --> src/client/tests.rs:14:2
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Rng,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `decrypt` is never used
[INFO] [stdout]  --> src/encryption.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait Cipher {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] 5 |     fn encrypt(&self, plain: &[u8]) -> Vec<u8>;
[INFO] [stdout] 6 |     fn decrypt(&self, cipher: &[u8]) -> Vec<u8>;
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.77s
[INFO] running `Command { std: "docker" "inspect" "d7fc4128d482a8319aaef37b94f659e5f9dbf3fe90bc76b5822e571514a6a5d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7fc4128d482a8319aaef37b94f659e5f9dbf3fe90bc76b5822e571514a6a5d2", kill_on_drop: false }`
[INFO] [stdout] d7fc4128d482a8319aaef37b94f659e5f9dbf3fe90bc76b5822e571514a6a5d2
[INFO] checking insomnimus/testing-finals-1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finsomnimus%2Ftesting-finals-1" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/insomnimus/testing-finals-1 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/insomnimus/testing-finals-1
[INFO] finished tweaking git repo https://github.com/insomnimus/testing-finals-1
[INFO] tweaked toml for git repo https://github.com/insomnimus/testing-finals-1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/insomnimus/testing-finals-1 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b5ee43bc1d0a1a160e1e0c6570ed05a333cf1328c9a006de7d823a47235f7da6
[INFO] running `Command { std: "docker" "start" "-a" "b5ee43bc1d0a1a160e1e0c6570ed05a333cf1328c9a006de7d823a47235f7da6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5ee43bc1d0a1a160e1e0c6570ed05a333cf1328c9a006de7d823a47235f7da6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5ee43bc1d0a1a160e1e0c6570ed05a333cf1328c9a006de7d823a47235f7da6", kill_on_drop: false }`
[INFO] [stdout] b5ee43bc1d0a1a160e1e0c6570ed05a333cf1328c9a006de7d823a47235f7da6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee561a777bd0cab397e178ef1cf5edfc97ee91ec4b641ccadcad0a1b717becc5
[INFO] running `Command { std: "docker" "start" "-a" "ee561a777bd0cab397e178ef1cf5edfc97ee91ec4b641ccadcad0a1b717becc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling syn v1.0.83
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.132
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling snap v1.0.5
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking temp-dir v0.1.11
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v3.0.0-rc.8
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking chat v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/client/tests.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |         Write,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `io` is imported redundantly
[INFO] [stdout]   --> src/client/tests.rs:4:3
[INFO] [stdout]    |
[INFO] [stdout] 4  |         self,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 | use super::*;
[INFO] [stdout]    |     -------- the item `io` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Cursor` is imported redundantly
[INFO] [stdout]   --> src/client/tests.rs:5:3
[INFO] [stdout]    |
[INFO] [stdout] 5  |         Cursor,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 | use super::*;
[INFO] [stdout]    |     -------- the item `Cursor` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `distributions::Alphanumeric`
[INFO] [stdout]   --> src/client/tests.rs:12:2
[INFO] [stdout]    |
[INFO] [stdout] 12 |     distributions::Alphanumeric,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write::FrameEncoder`
[INFO] [stdout]   --> src/client/tests.rs:18:2
[INFO] [stdout]    |
[INFO] [stdout] 18 |     write::FrameEncoder,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FrameDecoder` is imported redundantly
[INFO] [stdout]   --> src/client/tests.rs:17:2
[INFO] [stdout]    |
[INFO] [stdout] 17 |     read::FrameDecoder,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 | use super::*;
[INFO] [stdout]    |     -------- the item `FrameDecoder` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Header` is imported redundantly
[INFO] [stdout]   --> src/client/tests.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 22 | use super::*;
[INFO] [stdout]    |     -------- the item `Header` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 26 |         Header,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `HeaderKind` is imported redundantly
[INFO] [stdout]   --> src/client/tests.rs:27:3
[INFO] [stdout]    |
[INFO] [stdout] 22 | use super::*;
[INFO] [stdout]    |     -------- the item `HeaderKind` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 27 |         HeaderKind,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Error` is imported redundantly
[INFO] [stdout]   --> src/client/tests.rs:29:2
[INFO] [stdout]    |
[INFO] [stdout] 22 | use super::*;
[INFO] [stdout]    |     -------- the item `Error` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 29 |     Error,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]   --> src/client/tests.rs:14:2
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Rng,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `decrypt` is never used
[INFO] [stdout]  --> src/encryption.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait Cipher {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] 5 |     fn encrypt(&self, plain: &[u8]) -> Vec<u8>;
[INFO] [stdout] 6 |     fn decrypt(&self, cipher: &[u8]) -> Vec<u8>;
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.89s
[INFO] running `Command { std: "docker" "inspect" "ee561a777bd0cab397e178ef1cf5edfc97ee91ec4b641ccadcad0a1b717becc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee561a777bd0cab397e178ef1cf5edfc97ee91ec4b641ccadcad0a1b717becc5", kill_on_drop: false }`
[INFO] [stdout] ee561a777bd0cab397e178ef1cf5edfc97ee91ec4b641ccadcad0a1b717becc5