[INFO] fetching crate rich-result 0.1.2...
[INFO] testing rich-result-0.1.2 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate rich-result 0.1.2 into /workspace/builds/worker-4-tc1/source
[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-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rich-result 0.1.2 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 687bac0381aebd06719498eab14fa6a265f92b012214adba6adc9b1ec98c26fd
[INFO] running `Command { std: "docker" "start" "-a" "687bac0381aebd06719498eab14fa6a265f92b012214adba6adc9b1ec98c26fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "687bac0381aebd06719498eab14fa6a265f92b012214adba6adc9b1ec98c26fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "687bac0381aebd06719498eab14fa6a265f92b012214adba6adc9b1ec98c26fd", kill_on_drop: false }`
[INFO] [stdout] 687bac0381aebd06719498eab14fa6a265f92b012214adba6adc9b1ec98c26fd
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92bb69b461ba29cdceb20c348bcc6807611fa848d02ae2903e7f925b0a5338a4
[INFO] running `Command { std: "docker" "start" "-a" "92bb69b461ba29cdceb20c348bcc6807611fa848d02ae2903e7f925b0a5338a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rich-result v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `CollectSum` is never constructed
[INFO] [stdout]   --> src/lib.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | struct CollectSum<T>(T);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CollectProduct` is never constructed
[INFO] [stdout]   --> src/lib.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct CollectProduct<T>(T);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "92bb69b461ba29cdceb20c348bcc6807611fa848d02ae2903e7f925b0a5338a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92bb69b461ba29cdceb20c348bcc6807611fa848d02ae2903e7f925b0a5338a4", kill_on_drop: false }`
[INFO] [stdout] 92bb69b461ba29cdceb20c348bcc6807611fa848d02ae2903e7f925b0a5338a4
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3f6b3bec34e5b8ce816cd7b4f59c2891a3bea7b5f21cd5ebd1504c193c3426a
[INFO] running `Command { std: "docker" "start" "-a" "a3f6b3bec34e5b8ce816cd7b4f59c2891a3bea7b5f21cd5ebd1504c193c3426a", kill_on_drop: false }`
[INFO] [stdout] warning: struct `CollectSum` is never constructed
[INFO] [stdout]   --> src/lib.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | struct CollectSum<T>(T);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CollectProduct` is never constructed
[INFO] [stdout]   --> src/lib.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct CollectProduct<T>(T);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rich-result v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `CollectSum` is never constructed
[INFO] [stdout]   --> src/lib.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | struct CollectSum<T>(T);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CollectProduct` is never constructed
[INFO] [stdout]   --> src/lib.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct CollectProduct<T>(T);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[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)]` (part of `#[warn(unused)]`) 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "a3f6b3bec34e5b8ce816cd7b4f59c2891a3bea7b5f21cd5ebd1504c193c3426a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3f6b3bec34e5b8ce816cd7b4f59c2891a3bea7b5f21cd5ebd1504c193c3426a", kill_on_drop: false }`
[INFO] [stdout] a3f6b3bec34e5b8ce816cd7b4f59c2891a3bea7b5f21cd5ebd1504c193c3426a
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 06a83ebd0faf28efc24588b640aff8125aa02c71b0fd4dbd0fca1a711cb68591
[INFO] running `Command { std: "docker" "start" "-a" "06a83ebd0faf28efc24588b640aff8125aa02c71b0fd4dbd0fca1a711cb68591", kill_on_drop: false }`
[INFO] [stderr] warning: struct `CollectSum` is never constructed
[INFO] [stderr]   --> src/lib.rs:80:8
[INFO] [stderr]    |
[INFO] [stderr] 80 | struct CollectSum<T>(T);
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `CollectProduct` is never constructed
[INFO] [stderr]   --> src/lib.rs:91:8
[INFO] [stderr]    |
[INFO] [stderr] 91 | struct CollectProduct<T>(T);
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rich-result` (lib) generated 2 warnings
[INFO] [stderr] warning: unused `LocalResult` that must be used
[INFO] [stderr]     --> src/lib.rs:1058:49
[INFO] [stderr]      |
[INFO] [stderr] 1058 |             fn this_should_warn() -> ResultTy { result()?; Ok(OkTy) }
[INFO] [stderr]      |                                                 ^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]      |
[INFO] [stderr] 1058 |             fn this_should_warn() -> ResultTy { let _ = result()?; Ok(OkTy) }
[INFO] [stderr]      |                                                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rich-result` (lib test) generated 3 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rich_result-4edf454edfbf0373)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::test_collected_layered ... ok
[INFO] [stdout] test tests::test_collected_errs_std ... ok
[INFO] [stdout] test tests::test_from_collected_errs ... ok
[INFO] [stdout] test tests::test_from_collected_recoverables ... ok
[INFO] [stdout] test tests::test_from_iter ... ok
[INFO] [stdout] test tests::test_from_collected_errs_mixed ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rich_result
[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" "06a83ebd0faf28efc24588b640aff8125aa02c71b0fd4dbd0fca1a711cb68591", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06a83ebd0faf28efc24588b640aff8125aa02c71b0fd4dbd0fca1a711cb68591", kill_on_drop: false }`
[INFO] [stdout] 06a83ebd0faf28efc24588b640aff8125aa02c71b0fd4dbd0fca1a711cb68591