[INFO] fetching crate lender 0.2.9...
[INFO] checking lender-0.2.9 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate lender 0.2.9 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate lender 0.2.9 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lender 0.2.9
[INFO] finished tweaking crates.io crate lender 0.2.9
[INFO] tweaked toml for crates.io crate lender 0.2.9 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lender-derive v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc42b0e63cf5cb2177c5a610cf99f0ebee0a0f47c66a8c5cc83054798321b5b6
[INFO] running `Command { std: "docker" "start" "-a" "cc42b0e63cf5cb2177c5a610cf99f0ebee0a0f47c66a8c5cc83054798321b5b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc42b0e63cf5cb2177c5a610cf99f0ebee0a0f47c66a8c5cc83054798321b5b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc42b0e63cf5cb2177c5a610cf99f0ebee0a0f47c66a8c5cc83054798321b5b6", kill_on_drop: false }`
[INFO] [stdout] cc42b0e63cf5cb2177c5a610cf99f0ebee0a0f47c66a8c5cc83054798321b5b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8d285dcb543a575c7947de40becc8f18126dae4bb00ec875451c691c8676c98
[INFO] running `Command { std: "docker" "start" "-a" "f8d285dcb543a575c7947de40becc8f18126dae4bb00ec875451c691c8676c98", kill_on_drop: false }`
[INFO] [stderr]    Compiling lender-derive v0.1.2
[INFO] [stderr]     Checking lender v0.2.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/try_trait_v2.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |             ControlFlow::Break(b) => ControlFlow::Break(b),
[INFO] [stdout]    |             --------------------- matches all the relevant values
[INFO] [stdout] 38 |             // *should* be compiled out
[INFO] [stdout] 39 |             _ => unreachable!(),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/try_trait_v2.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |             Err(e) => Err(From::from(e)),
[INFO] [stdout]    |             ------ matches all the relevant values
[INFO] [stdout] 85 |             // *should* be compiled out
[INFO] [stdout] 86 |             _ => unreachable!(),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/try_trait_v2.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |             Err(e) => Poll::Ready(Err(From::from(e))),
[INFO] [stdout]     |             ------ matches all the relevant values
[INFO] [stdout] 112 |             // *should* be compiled out
[INFO] [stdout] 113 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/try_trait_v2.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |             Err(e) => Poll::Ready(Some(Err(From::from(e)))),
[INFO] [stdout]     |             ------ matches all the relevant values
[INFO] [stdout] 141 |             // *should* be compiled out
[INFO] [stdout] 142 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/try_trait_v2.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |             ControlFlow::Break(b) => ControlFlow::Break(b),
[INFO] [stdout]    |             --------------------- matches all the relevant values
[INFO] [stdout] 38 |             // *should* be compiled out
[INFO] [stdout] 39 |             _ => unreachable!(),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/try_trait_v2.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |             Err(e) => Err(From::from(e)),
[INFO] [stdout]    |             ------ matches all the relevant values
[INFO] [stdout] 85 |             // *should* be compiled out
[INFO] [stdout] 86 |             _ => unreachable!(),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/try_trait_v2.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |             Err(e) => Poll::Ready(Err(From::from(e))),
[INFO] [stdout]     |             ------ matches all the relevant values
[INFO] [stdout] 112 |             // *should* be compiled out
[INFO] [stdout] 113 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/try_trait_v2.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |             Err(e) => Poll::Ready(Some(Err(From::from(e)))),
[INFO] [stdout]     |             ------ matches all the relevant values
[INFO] [stdout] 141 |             // *should* be compiled out
[INFO] [stdout] 142 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lender::IntoIteratorExt`
[INFO] [stdout]  --> tests/test_lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use lender::IntoIteratorExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "f8d285dcb543a575c7947de40becc8f18126dae4bb00ec875451c691c8676c98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8d285dcb543a575c7947de40becc8f18126dae4bb00ec875451c691c8676c98", kill_on_drop: false }`
[INFO] [stdout] f8d285dcb543a575c7947de40becc8f18126dae4bb00ec875451c691c8676c98