[INFO] fetching crate rich-result 0.1.2...
[INFO] checking rich-result-0.1.2 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate rich-result 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate rich-result 0.1.2 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rich-result 0.1.2
[INFO] finished tweaking crates.io crate rich-result 0.1.2
[INFO] tweaked toml for crates.io crate rich-result 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c1fabf42aee3e7ddde05ac25beb5107176989093e5965273148cdfee7a4a336
[INFO] running `Command { std: "docker" "start" "-a" "0c1fabf42aee3e7ddde05ac25beb5107176989093e5965273148cdfee7a4a336", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c1fabf42aee3e7ddde05ac25beb5107176989093e5965273148cdfee7a4a336", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c1fabf42aee3e7ddde05ac25beb5107176989093e5965273148cdfee7a4a336", kill_on_drop: false }`
[INFO] [stdout] 0c1fabf42aee3e7ddde05ac25beb5107176989093e5965273148cdfee7a4a336
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f094e651764d4f9e7bc0e53d287472bbb27a219c81298a902e64f56e8460c37
[INFO] running `Command { std: "docker" "start" "-a" "3f094e651764d4f9e7bc0e53d287472bbb27a219c81298a902e64f56e8460c37", kill_on_drop: false }`
[INFO] [stderr]     Checking rich-result v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:597:13
[INFO] [stdout]     |
[INFO] [stdout] 597 |             Ok(infallible) | Recoverable(infallible) => match infallible {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ matches no values because `Infallible` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:727:13
[INFO] [stdout]     |
[INFO] [stdout] 727 |             NoErr(infallible) => match infallible {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ matches no values because `Infallible` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:755:13
[INFO] [stdout]     |
[INFO] [stdout] 755 |             Ok(infallible) | Recoverable(infallible) => match infallible {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ matches no values because `Infallible` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:766:13
[INFO] [stdout]     |
[INFO] [stdout] 766 |             NoErr(infallible) => match infallible {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ matches no values because `Infallible` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:778:13
[INFO] [stdout]     |
[INFO] [stdout] 778 |             StdOk(infallible) => match infallible {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ matches no values because `Infallible` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:789:13
[INFO] [stdout]     |
[INFO] [stdout] 789 |             NoErr(infallible) => match infallible {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ matches no values because `Infallible` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:597:13
[INFO] [stdout]     |
[INFO] [stdout] 597 |             Ok(infallible) | Recoverable(infallible) => match infallible {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ matches no values because `Infallible` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:727:13
[INFO] [stdout]     |
[INFO] [stdout] 727 |             NoErr(infallible) => match infallible {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ matches no values because `Infallible` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:755:13
[INFO] [stdout]     |
[INFO] [stdout] 755 |             Ok(infallible) | Recoverable(infallible) => match infallible {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ matches no values because `Infallible` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:766:13
[INFO] [stdout]     |
[INFO] [stdout] 766 |             NoErr(infallible) => match infallible {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ matches no values because `Infallible` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:778:13
[INFO] [stdout]     |
[INFO] [stdout] 778 |             StdOk(infallible) => match infallible {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ matches no values because `Infallible` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:789:13
[INFO] [stdout]     |
[INFO] [stdout] 789 |             NoErr(infallible) => match infallible {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ matches no values because `Infallible` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `LocalResult` that must be used
[INFO] [stdout]     --> src/lib.rs:1058:49
[INFO] [stdout]      |
[INFO] [stdout] 1058 |             fn this_should_warn() -> ResultTy { result()?; Ok(OkTy) }
[INFO] [stdout]      |                                                 ^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1058 |             fn this_should_warn() -> ResultTy { let _ = result()?; Ok(OkTy) }
[INFO] [stdout]      |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "3f094e651764d4f9e7bc0e53d287472bbb27a219c81298a902e64f56e8460c37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f094e651764d4f9e7bc0e53d287472bbb27a219c81298a902e64f56e8460c37", kill_on_drop: false }`
[INFO] [stdout] 3f094e651764d4f9e7bc0e53d287472bbb27a219c81298a902e64f56e8460c37