[INFO] fetching crate heckcheck 1.0.2...
[INFO] testing heckcheck-1.0.2 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate heckcheck 1.0.2 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate heckcheck 1.0.2 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate heckcheck 1.0.2
[INFO] finished tweaking crates.io crate heckcheck 1.0.2
[INFO] tweaked toml for crates.io crate heckcheck 1.0.2 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive_arbitrary v1.1.0
[INFO] [stderr]   Downloaded arbitrary v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b377936726ad6acde675d6e123c5f94c76afecffdeea4eafc688c02c50d3a7eb
[INFO] running `Command { std: "docker" "start" "-a" "b377936726ad6acde675d6e123c5f94c76afecffdeea4eafc688c02c50d3a7eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b377936726ad6acde675d6e123c5f94c76afecffdeea4eafc688c02c50d3a7eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b377936726ad6acde675d6e123c5f94c76afecffdeea4eafc688c02c50d3a7eb", kill_on_drop: false }`
[INFO] [stdout] b377936726ad6acde675d6e123c5f94c76afecffdeea4eafc688c02c50d3a7eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d115b2e1a8b631c22086c420fdaeb1bbf206f4ac3c1474f710a60cc53494b19
[INFO] running `Command { std: "docker" "start" "-a" "1d115b2e1a8b631c22086c420fdaeb1bbf206f4ac3c1474f710a60cc53494b19", kill_on_drop: false }`
[INFO] [stderr]    Compiling derive_arbitrary v1.1.0
[INFO] [stderr]    Compiling arbitrary v1.1.0
[INFO] [stderr]    Compiling heckcheck v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `seed`
[INFO] [stdout]   --> src/checker.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     seed: u64,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `HeckCheck` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/checker.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.15s
[INFO] running `Command { std: "docker" "inspect" "1d115b2e1a8b631c22086c420fdaeb1bbf206f4ac3c1474f710a60cc53494b19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d115b2e1a8b631c22086c420fdaeb1bbf206f4ac3c1474f710a60cc53494b19", kill_on_drop: false }`
[INFO] [stdout] 1d115b2e1a8b631c22086c420fdaeb1bbf206f4ac3c1474f710a60cc53494b19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06bf6b321a260eefb5ee92c22314487aeeeeaa3d720b5626bec214c608a695fe
[INFO] running `Command { std: "docker" "start" "-a" "06bf6b321a260eefb5ee92c22314487aeeeeaa3d720b5626bec214c608a695fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling heckcheck v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `seed`
[INFO] [stdout]   --> src/checker.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     seed: u64,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `HeckCheck` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/checker.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `seed`
[INFO] [stdout]   --> src/checker.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     seed: u64,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `HeckCheck` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/checker.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "06bf6b321a260eefb5ee92c22314487aeeeeaa3d720b5626bec214c608a695fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06bf6b321a260eefb5ee92c22314487aeeeeaa3d720b5626bec214c608a695fe", kill_on_drop: false }`
[INFO] [stdout] 06bf6b321a260eefb5ee92c22314487aeeeeaa3d720b5626bec214c608a695fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2e7144c4acbe98e4a7db934bc358cfcb2f46faac10761d4745f188699465fdef
[INFO] running `Command { std: "docker" "start" "-a" "2e7144c4acbe98e4a7db934bc358cfcb2f46faac10761d4745f188699465fdef", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `seed`
[INFO] [stdout] 
[INFO] [stderr]   --> src/checker.rs:19:5
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 19 |     seed: u64,
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `HeckCheck` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/checker.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `heckcheck` (lib) generated 1 warning
[INFO] [stderr] warning: `heckcheck` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/heckcheck-67e9ad2ce9298779)
[INFO] [stderr]      Running tests/test.rs (/opt/rustwide/target/debug/deps/test-13c633cbdd1ce777)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test shrinker - should panic ... ok
[INFO] [stdout] test smoke ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests heckcheck
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 43) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2e7144c4acbe98e4a7db934bc358cfcb2f46faac10761d4745f188699465fdef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e7144c4acbe98e4a7db934bc358cfcb2f46faac10761d4745f188699465fdef", kill_on_drop: false }`
[INFO] [stdout] 2e7144c4acbe98e4a7db934bc358cfcb2f46faac10761d4745f188699465fdef