[INFO] fetching crate iter-opt-filter 0.1.0...
[INFO] testing iter-opt-filter-0.1.0 against 1.76.0 for beta-1.77-1
[INFO] extracting crate iter-opt-filter 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate iter-opt-filter 0.1.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iter-opt-filter 0.1.0
[INFO] finished tweaking crates.io crate iter-opt-filter 0.1.0
[INFO] tweaked toml for crates.io crate iter-opt-filter 0.1.0 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" "+1.76.0" "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" "+1.76.0" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3df8e554b7eaeb5feb87f1a07585e521ba7856dda31066c673143771b602d27
[INFO] running `Command { std: "docker" "start" "-a" "a3df8e554b7eaeb5feb87f1a07585e521ba7856dda31066c673143771b602d27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3df8e554b7eaeb5feb87f1a07585e521ba7856dda31066c673143771b602d27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3df8e554b7eaeb5feb87f1a07585e521ba7856dda31066c673143771b602d27", kill_on_drop: false }`
[INFO] [stdout] a3df8e554b7eaeb5feb87f1a07585e521ba7856dda31066c673143771b602d27
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bd7f20d9e8e0733ba662c9371cadddc95643c5da0822e57de6acc524831030c
[INFO] running `Command { std: "docker" "start" "-a" "6bd7f20d9e8e0733ba662c9371cadddc95643c5da0822e57de6acc524831030c", kill_on_drop: false }`
[INFO] [stderr]    Compiling iter-opt-filter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "6bd7f20d9e8e0733ba662c9371cadddc95643c5da0822e57de6acc524831030c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bd7f20d9e8e0733ba662c9371cadddc95643c5da0822e57de6acc524831030c", kill_on_drop: false }`
[INFO] [stdout] 6bd7f20d9e8e0733ba662c9371cadddc95643c5da0822e57de6acc524831030c
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 699e4687e6783fa75eac60a2e8a8d520b1a4dae364ccb99db9054ab24479397f
[INFO] running `Command { std: "docker" "start" "-a" "699e4687e6783fa75eac60a2e8a8d520b1a4dae364ccb99db9054ab24479397f", kill_on_drop: false }`
[INFO] [stderr]    Compiling iter-opt-filter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:11:27
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![cfg_attr(test, feature(test))]
[INFO] [stdout]    |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `iter-opt-filter` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "699e4687e6783fa75eac60a2e8a8d520b1a4dae364ccb99db9054ab24479397f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "699e4687e6783fa75eac60a2e8a8d520b1a4dae364ccb99db9054ab24479397f", kill_on_drop: false }`
[INFO] [stdout] 699e4687e6783fa75eac60a2e8a8d520b1a4dae364ccb99db9054ab24479397f
[INFO] testing iter-opt-filter-0.1.0 against beta-2024-02-10 for beta-1.77-1
[INFO] extracting crate iter-opt-filter 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate iter-opt-filter 0.1.0 on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iter-opt-filter 0.1.0
[INFO] finished tweaking crates.io crate iter-opt-filter 0.1.0
[INFO] tweaked toml for crates.io crate iter-opt-filter 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "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" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f96d895e4b7b85cc3d9707bdf1ecdc886199eab387cf1f6055a1871b647b833
[INFO] running `Command { std: "docker" "start" "-a" "3f96d895e4b7b85cc3d9707bdf1ecdc886199eab387cf1f6055a1871b647b833", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f96d895e4b7b85cc3d9707bdf1ecdc886199eab387cf1f6055a1871b647b833", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f96d895e4b7b85cc3d9707bdf1ecdc886199eab387cf1f6055a1871b647b833", kill_on_drop: false }`
[INFO] [stdout] 3f96d895e4b7b85cc3d9707bdf1ecdc886199eab387cf1f6055a1871b647b833
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c217fb0ad8bd87b3a0659fa37be50e1f2228c65248b8e21e8c27585cca7b5496
[INFO] running `Command { std: "docker" "start" "-a" "c217fb0ad8bd87b3a0659fa37be50e1f2228c65248b8e21e8c27585cca7b5496", kill_on_drop: false }`
[INFO] [stderr]    Compiling iter-opt-filter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "c217fb0ad8bd87b3a0659fa37be50e1f2228c65248b8e21e8c27585cca7b5496", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c217fb0ad8bd87b3a0659fa37be50e1f2228c65248b8e21e8c27585cca7b5496", kill_on_drop: false }`
[INFO] [stdout] c217fb0ad8bd87b3a0659fa37be50e1f2228c65248b8e21e8c27585cca7b5496
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bd1832d5a52c1c5bfc1745354bb256009772e5efaff42697bab70c691a2eb97
[INFO] running `Command { std: "docker" "start" "-a" "9bd1832d5a52c1c5bfc1745354bb256009772e5efaff42697bab70c691a2eb97", kill_on_drop: false }`
[INFO] [stderr]    Compiling iter-opt-filter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:11:27
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![cfg_attr(test, feature(test))]
[INFO] [stdout]    |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `iter-opt-filter` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9bd1832d5a52c1c5bfc1745354bb256009772e5efaff42697bab70c691a2eb97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bd1832d5a52c1c5bfc1745354bb256009772e5efaff42697bab70c691a2eb97", kill_on_drop: false }`
[INFO] [stdout] 9bd1832d5a52c1c5bfc1745354bb256009772e5efaff42697bab70c691a2eb97
