[INFO] fetching crate holder 0.14.0...
[INFO] testing holder-0.14.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate holder 0.14.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate holder 0.14.0
[INFO] finished tweaking crates.io crate holder 0.14.0
[INFO] tweaked toml for crates.io crate holder 0.14.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate holder 0.14.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8493485cabe885b6c8b96b2770c82b185171ee14e82af70a42e4a5cc71cacf7a
[INFO] running `Command { std: "docker" "start" "-a" "8493485cabe885b6c8b96b2770c82b185171ee14e82af70a42e4a5cc71cacf7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8493485cabe885b6c8b96b2770c82b185171ee14e82af70a42e4a5cc71cacf7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8493485cabe885b6c8b96b2770c82b185171ee14e82af70a42e4a5cc71cacf7a", kill_on_drop: false }`
[INFO] [stdout] 8493485cabe885b6c8b96b2770c82b185171ee14e82af70a42e4a5cc71cacf7a
[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" "-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c29c950cbc647e7178eed18e56b0ba9d315966d5655864f146947631e3c370f
[INFO] running `Command { std: "docker" "start" "-a" "9c29c950cbc647e7178eed18e56b0ba9d315966d5655864f146947631e3c370f", kill_on_drop: false }`
[INFO] [stderr]    Compiling convert_case v0.6.0
[INFO] [stderr]    Compiling holder_derive v0.14.0
[INFO] [stderr]    Compiling holder v0.14.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "9c29c950cbc647e7178eed18e56b0ba9d315966d5655864f146947631e3c370f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c29c950cbc647e7178eed18e56b0ba9d315966d5655864f146947631e3c370f", kill_on_drop: false }`
[INFO] [stdout] 9c29c950cbc647e7178eed18e56b0ba9d315966d5655864f146947631e3c370f
[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" "-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06614c8317d89e607cb0374acc1afb939c268d6ac0b804041f6d2aa545cb795c
[INFO] running `Command { std: "docker" "start" "-a" "06614c8317d89e607cb0374acc1afb939c268d6ac0b804041f6d2aa545cb795c", kill_on_drop: false }`
[INFO] [stderr]    Compiling holder v0.14.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]  --> tests/test2.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let token: &mut Token<i32> = wrapper.token_mut();
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> tests/test2.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let token: &Token<i32> = wrapper.token();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game_state`
[INFO] [stdout]   --> tests/test2.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let game_state: &GameState = wrapper.game_state();
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game_state_mut`
[INFO] [stdout]   --> tests/test2.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let game_state_mut: &mut GameState = wrapper.game_state_mut();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_state_mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Play` is never constructed
[INFO] [stdout]   --> tests/test2.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 62 | enum GameState {
[INFO] [stdout]    |      --------- variant in this enum
[INFO] [stdout] 63 |     Idle,
[INFO] [stdout] 64 |     Play,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]  --> tests/test2.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let token: &mut Token<i32> = wrapper.token_mut();
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> tests/test2.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let token: &Token<i32> = wrapper.token();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game_state`
[INFO] [stdout]   --> tests/test2.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let game_state: &GameState = wrapper.game_state();
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game_state_mut`
[INFO] [stdout]   --> tests/test2.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let game_state_mut: &mut GameState = wrapper.game_state_mut();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_state_mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> tests/test.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let token: &mut Token<i32> = wrapper.token_mut();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> tests/test.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let token: &Token<i32> = wrapper.token();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game_state`
[INFO] [stdout]   --> tests/test.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let game_state: &GameState = wrapper.game_state();
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game_state_mut`
[INFO] [stdout]   --> tests/test.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let game_state_mut: &mut GameState = wrapper.game_state_mut();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_state_mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Play` is never constructed
[INFO] [stdout]   --> tests/test.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | enum GameState {
[INFO] [stdout]    |      --------- variant in this enum
[INFO] [stdout] 38 |     Idle,
[INFO] [stdout] 39 |     Play,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> tests/test2.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Wrapper` is never constructed
[INFO] [stdout]   --> tests/test2.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Wrapper<T: Default>
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Token` is never constructed
[INFO] [stdout]   --> tests/test2.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct Token<T: Default>(PhantomData<T>)
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TokenHolder` is never used
[INFO] [stdout]   --> tests/test2.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 | trait TokenHolder<T: Default>
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `GameState` is never used
[INFO] [stdout]   --> tests/test2.rs:62:6
[INFO] [stdout]    |
[INFO] [stdout] 62 | enum GameState {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `GameStateHolder` is never used
[INFO] [stdout]   --> tests/test2.rs:67:7
[INFO] [stdout]    |
[INFO] [stdout] 67 | trait GameStateHolder {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "06614c8317d89e607cb0374acc1afb939c268d6ac0b804041f6d2aa545cb795c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06614c8317d89e607cb0374acc1afb939c268d6ac0b804041f6d2aa545cb795c", kill_on_drop: false }`
[INFO] [stdout] 06614c8317d89e607cb0374acc1afb939c268d6ac0b804041f6d2aa545cb795c
[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" "-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 58a29965dba69751fdd1b7d31f500b1a3ed9392b1c246b71d9c96fe8b799c513
[INFO] running `Command { std: "docker" "start" "-a" "58a29965dba69751fdd1b7d31f500b1a3ed9392b1c246b71d9c96fe8b799c513", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]  --> tests/test2.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let token: &mut Token<i32> = wrapper.token_mut();
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> tests/test2.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let token: &Token<i32> = wrapper.token();
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `game_state`
[INFO] [stderr]   --> tests/test2.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let game_state: &GameState = wrapper.game_state();
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `game_state_mut`
[INFO] [stderr]   --> tests/test2.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let game_state_mut: &mut GameState = wrapper.game_state_mut();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_state_mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Play` is never constructed
[INFO] [stderr]   --> tests/test2.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 62 | enum GameState {
[INFO] [stderr]    |      --------- variant in this enum
[INFO] [stderr] 63 |     Idle,
[INFO] [stderr] 64 |     Play,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> tests/test.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let token: &mut Token<i32> = wrapper.token_mut();
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> tests/test.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let token: &Token<i32> = wrapper.token();
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `game_state`
[INFO] [stderr]   --> tests/test.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let game_state: &GameState = wrapper.game_state();
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `game_state_mut`
[INFO] [stderr]   --> tests/test.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let game_state_mut: &mut GameState = wrapper.game_state_mut();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_state_mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Play` is never constructed
[INFO] [stderr]   --> tests/test.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 37 | enum GameState {
[INFO] [stderr]    |      --------- variant in this enum
[INFO] [stderr] 38 |     Idle,
[INFO] [stderr] 39 |     Play,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]  --> tests/test2.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn main() {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Wrapper` is never constructed
[INFO] [stderr]   --> tests/test2.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | struct Wrapper<T: Default>
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Token` is never constructed
[INFO] [stderr]   --> tests/test2.rs:50:8
[INFO] [stderr]    |
[INFO] [stderr] 50 | struct Token<T: Default>(PhantomData<T>)
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `TokenHolder` is never used
[INFO] [stderr]   --> tests/test2.rs:54:7
[INFO] [stderr]    |
[INFO] [stderr] 54 | trait TokenHolder<T: Default>
[INFO] [stderr]    |       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `GameState` is never used
[INFO] [stderr]   --> tests/test2.rs:62:6
[INFO] [stderr]    |
[INFO] [stderr] 62 | enum GameState {
[INFO] [stderr]    |      ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `GameStateHolder` is never used
[INFO] [stderr]   --> tests/test2.rs:67:7
[INFO] [stderr]    |
[INFO] [stderr] 67 | trait GameStateHolder {
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `holder` (test "test2") generated 5 warnings
[INFO] [stderr] warning: `holder` (test "test") generated 15 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/holder-712956e2ba1ac3b2)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running tests/test.rs (/opt/rustwide/target/debug/deps/test-fb935a6bf6681481)
[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] [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 tests/test2.rs (/opt/rustwide/target/debug/deps/test2-5f7096b75e0868b1)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests holder
[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] [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" "58a29965dba69751fdd1b7d31f500b1a3ed9392b1c246b71d9c96fe8b799c513", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58a29965dba69751fdd1b7d31f500b1a3ed9392b1c246b71d9c96fe8b799c513", kill_on_drop: false }`
[INFO] [stdout] 58a29965dba69751fdd1b7d31f500b1a3ed9392b1c246b71d9c96fe8b799c513