[INFO] fetching crate unused 0.1.0...
[INFO] checking unused-0.1.0 against master#bbcc1691a4646a6d2ebb2189bdff5b878407fbe6 for pr-117351
[INFO] extracting crate unused 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate unused 0.1.0 on toolchain bbcc1691a4646a6d2ebb2189bdff5b878407fbe6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbcc1691a4646a6d2ebb2189bdff5b878407fbe6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unused 0.1.0
[INFO] finished tweaking crates.io crate unused 0.1.0
[INFO] tweaked toml for crates.io crate unused 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbcc1691a4646a6d2ebb2189bdff5b878407fbe6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbcc1691a4646a6d2ebb2189bdff5b878407fbe6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+bbcc1691a4646a6d2ebb2189bdff5b878407fbe6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8e9c6a644534245214abb11adbbb9024ed171e984a7cda1012212c28590e0ca
[INFO] running `Command { std: "docker" "start" "-a" "c8e9c6a644534245214abb11adbbb9024ed171e984a7cda1012212c28590e0ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8e9c6a644534245214abb11adbbb9024ed171e984a7cda1012212c28590e0ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8e9c6a644534245214abb11adbbb9024ed171e984a7cda1012212c28590e0ca", kill_on_drop: false }`
[INFO] [stdout] c8e9c6a644534245214abb11adbbb9024ed171e984a7cda1012212c28590e0ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+bbcc1691a4646a6d2ebb2189bdff5b878407fbe6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 450b675cfa85ac67ceea9defd72e304e30b8b3d4c9b201eb71fb0bfccef4fa70
[INFO] running `Command { std: "docker" "start" "-a" "450b675cfa85ac67ceea9defd72e304e30b8b3d4c9b201eb71fb0bfccef4fa70", kill_on_drop: false }`
[INFO] [stderr]     Checking unused v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:28:15
[INFO] [stdout]    |
[INFO] [stdout] 28 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:34:15
[INFO] [stdout]    |
[INFO] [stdout] 34 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:42:15
[INFO] [stdout]    |
[INFO] [stdout] 42 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:50:15
[INFO] [stdout]    |
[INFO] [stdout] 50 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:62:15
[INFO] [stdout]    |
[INFO] [stdout] 62 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:28:15
[INFO] [stdout]    |
[INFO] [stdout] 28 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:34:15
[INFO] [stdout]    |
[INFO] [stdout] 34 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:42:15
[INFO] [stdout]    |
[INFO] [stdout] 42 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:50:15
[INFO] [stdout]    |
[INFO] [stdout] 50 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:62:15
[INFO] [stdout]    |
[INFO] [stdout] 62 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:28:15
[INFO] [stdout]    |
[INFO] [stdout] 28 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:34:15
[INFO] [stdout]    |
[INFO] [stdout] 34 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:42:15
[INFO] [stdout]    |
[INFO] [stdout] 42 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:50:15
[INFO] [stdout]    |
[INFO] [stdout] 50 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:62:15
[INFO] [stdout]    |
[INFO] [stdout] 62 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:28:15
[INFO] [stdout]    |
[INFO] [stdout] 28 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:34:15
[INFO] [stdout]    |
[INFO] [stdout] 34 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:42:15
[INFO] [stdout]    |
[INFO] [stdout] 42 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:50:15
[INFO] [stdout]    |
[INFO] [stdout] 50 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/contravariant.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/contravariant.rs:62:15
[INFO] [stdout]    |
[INFO] [stdout] 62 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:28:15
[INFO] [stdout]    |
[INFO] [stdout] 28 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:34:15
[INFO] [stdout]    |
[INFO] [stdout] 34 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:42:15
[INFO] [stdout]    |
[INFO] [stdout] 42 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:50:15
[INFO] [stdout]    |
[INFO] [stdout] 50 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/covariant.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/covariant.rs:62:15
[INFO] [stdout]    |
[INFO] [stdout] 62 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:28:15
[INFO] [stdout]    |
[INFO] [stdout] 28 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:34:15
[INFO] [stdout]    |
[INFO] [stdout] 34 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:42:15
[INFO] [stdout]    |
[INFO] [stdout] 42 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:50:15
[INFO] [stdout]    |
[INFO] [stdout] 50 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/invariant.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         match self.inconstruable() {}
[INFO] [stdout]    |         ^^^^^^--------------------^^^
[INFO] [stdout]    |         |     |
[INFO] [stdout]    |         |     any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `end::End`, which is uninhabited
[INFO] [stdout]   --> src/invariant.rs:62:15
[INFO] [stdout]    |
[INFO] [stdout] 62 |         match self.inconstruable() {}
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "450b675cfa85ac67ceea9defd72e304e30b8b3d4c9b201eb71fb0bfccef4fa70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "450b675cfa85ac67ceea9defd72e304e30b8b3d4c9b201eb71fb0bfccef4fa70", kill_on_drop: false }`
[INFO] [stdout] 450b675cfa85ac67ceea9defd72e304e30b8b3d4c9b201eb71fb0bfccef4fa70
[INFO] checking unused-0.1.0 against try#ac89e27721b9b4d1482ebc87f2f83b4e23d49d71 for pr-117351
[INFO] extracting crate unused 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate unused 0.1.0 on toolchain ac89e27721b9b4d1482ebc87f2f83b4e23d49d71
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac89e27721b9b4d1482ebc87f2f83b4e23d49d71" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unused 0.1.0
[INFO] finished tweaking crates.io crate unused 0.1.0
[INFO] tweaked toml for crates.io crate unused 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac89e27721b9b4d1482ebc87f2f83b4e23d49d71" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac89e27721b9b4d1482ebc87f2f83b4e23d49d71" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+ac89e27721b9b4d1482ebc87f2f83b4e23d49d71" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 413c28b5ea4b2a340d7380d143c95160ce03cbecf8a6d7f2f112ac75a8778203
[INFO] running `Command { std: "docker" "start" "-a" "413c28b5ea4b2a340d7380d143c95160ce03cbecf8a6d7f2f112ac75a8778203", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "413c28b5ea4b2a340d7380d143c95160ce03cbecf8a6d7f2f112ac75a8778203", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "413c28b5ea4b2a340d7380d143c95160ce03cbecf8a6d7f2f112ac75a8778203", kill_on_drop: false }`
[INFO] [stdout] 413c28b5ea4b2a340d7380d143c95160ce03cbecf8a6d7f2f112ac75a8778203
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+ac89e27721b9b4d1482ebc87f2f83b4e23d49d71" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f5079373b3b5d91e8e6c42865d53d99b2c8f10e1ad96d365274aff2ebfcf047
[INFO] running `Command { std: "docker" "start" "-a" "0f5079373b3b5d91e8e6c42865d53d99b2c8f10e1ad96d365274aff2ebfcf047", kill_on_drop: false }`
[INFO] [stderr]     Checking unused v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the size for values of type `T` cannot be known at compilation time
[INFO] [stdout]   --> src/covariant.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Covariant<T: ?Sized, N: UnusedInner> {
[INFO] [stdout]    |                      - this type parameter needs to be `Sized`
[INFO] [stdout] 10 |     _t: fn() -> T,
[INFO] [stdout]    |         ^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]    |
[INFO] [stdout]    = note: the return type of a function must have a statically known size
[INFO] [stdout] help: consider removing the `?Sized` bound to make the type parameter `Sized`
[INFO] [stdout]    |
[INFO] [stdout] 9  - pub struct Covariant<T: ?Sized, N: UnusedInner> {
[INFO] [stdout] 9  + pub struct Covariant<T, N: UnusedInner> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `T` cannot be known at compilation time
[INFO] [stdout]   --> src/invariant.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Invariant<T: ?Sized, N: UnusedInner> {
[INFO] [stdout]    |                      - this type parameter needs to be `Sized`
[INFO] [stdout] 10 |     _t: fn(T) -> T,
[INFO] [stdout]    |         ^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]    |
[INFO] [stdout]    = note: the return type of a function must have a statically known size
[INFO] [stdout] help: consider removing the `?Sized` bound to make the type parameter `Sized`
[INFO] [stdout]    |
[INFO] [stdout] 9  - pub struct Invariant<T: ?Sized, N: UnusedInner> {
[INFO] [stdout] 9  + pub struct Invariant<T, N: UnusedInner> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `T` cannot be known at compilation time
[INFO] [stdout]   --> src/covariant.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Covariant<T: ?Sized, N: UnusedInner> {
[INFO] [stdout]    |                      - this type parameter needs to be `Sized`
[INFO] [stdout] 10 |     _t: fn() -> T,
[INFO] [stdout]    |         ^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]    |
[INFO] [stdout]    = note: the return type of a function must have a statically known size
[INFO] [stdout] help: consider removing the `?Sized` bound to make the type parameter `Sized`
[INFO] [stdout]    |
[INFO] [stdout] 9  - pub struct Covariant<T: ?Sized, N: UnusedInner> {
[INFO] [stdout] 9  + pub struct Covariant<T, N: UnusedInner> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `T` cannot be known at compilation time
[INFO] [stdout]   --> src/invariant.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Invariant<T: ?Sized, N: UnusedInner> {
[INFO] [stdout]    |                      - this type parameter needs to be `Sized`
[INFO] [stdout] 10 |     _t: fn(T) -> T,
[INFO] [stdout]    |         ^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]    |
[INFO] [stdout]    = note: the return type of a function must have a statically known size
[INFO] [stdout] help: consider removing the `?Sized` bound to make the type parameter `Sized`
[INFO] [stdout]    |
[INFO] [stdout] 9  - pub struct Invariant<T: ?Sized, N: UnusedInner> {
[INFO] [stdout] 9  + pub struct Invariant<T, N: UnusedInner> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unused` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unused` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "0f5079373b3b5d91e8e6c42865d53d99b2c8f10e1ad96d365274aff2ebfcf047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f5079373b3b5d91e8e6c42865d53d99b2c8f10e1ad96d365274aff2ebfcf047", kill_on_drop: false }`
[INFO] [stdout] 0f5079373b3b5d91e8e6c42865d53d99b2c8f10e1ad96d365274aff2ebfcf047