[INFO] fetching crate iter-opt-filter 0.1.0...
[INFO] testing iter-opt-filter-0.1.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate iter-opt-filter 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate iter-opt-filter 0.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a54238ee5ff3e57f70e892adffbff6649427d684773b316af9b4c5fa59f50667
[INFO] running `Command { std: "docker" "start" "-a" "a54238ee5ff3e57f70e892adffbff6649427d684773b316af9b4c5fa59f50667", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a54238ee5ff3e57f70e892adffbff6649427d684773b316af9b4c5fa59f50667", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a54238ee5ff3e57f70e892adffbff6649427d684773b316af9b4c5fa59f50667", kill_on_drop: false }`
[INFO] [stdout] a54238ee5ff3e57f70e892adffbff6649427d684773b316af9b4c5fa59f50667
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c84cf366b0158ac510fff68b3e3bf077b7b908b7692713e825aefb716f9e7fc8
[INFO] running `Command { std: "docker" "start" "-a" "c84cf366b0158ac510fff68b3e3bf077b7b908b7692713e825aefb716f9e7fc8", 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" "c84cf366b0158ac510fff68b3e3bf077b7b908b7692713e825aefb716f9e7fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c84cf366b0158ac510fff68b3e3bf077b7b908b7692713e825aefb716f9e7fc8", kill_on_drop: false }`
[INFO] [stdout] c84cf366b0158ac510fff68b3e3bf077b7b908b7692713e825aefb716f9e7fc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a87c5d1c0d6317bc5bfb2ddf214c6582011b90f2a39a775249fcb5f085ca271
[INFO] running `Command { std: "docker" "start" "-a" "8a87c5d1c0d6317bc5bfb2ddf214c6582011b90f2a39a775249fcb5f085ca271", 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 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" "8a87c5d1c0d6317bc5bfb2ddf214c6582011b90f2a39a775249fcb5f085ca271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a87c5d1c0d6317bc5bfb2ddf214c6582011b90f2a39a775249fcb5f085ca271", kill_on_drop: false }`
[INFO] [stdout] 8a87c5d1c0d6317bc5bfb2ddf214c6582011b90f2a39a775249fcb5f085ca271
[INFO] testing iter-opt-filter-0.1.0 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate iter-opt-filter 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate iter-opt-filter 0.1.0 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "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-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "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-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7bb4ebf7f0c29899884c8277da76ec33a7e3303271942db21df5ff35f987628
[INFO] running `Command { std: "docker" "start" "-a" "d7bb4ebf7f0c29899884c8277da76ec33a7e3303271942db21df5ff35f987628", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7bb4ebf7f0c29899884c8277da76ec33a7e3303271942db21df5ff35f987628", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7bb4ebf7f0c29899884c8277da76ec33a7e3303271942db21df5ff35f987628", kill_on_drop: false }`
[INFO] [stdout] d7bb4ebf7f0c29899884c8277da76ec33a7e3303271942db21df5ff35f987628
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84be4a2c2af171a252b823cb0b1b835861053cdefda581c5d6125192084060f9
[INFO] running `Command { std: "docker" "start" "-a" "84be4a2c2af171a252b823cb0b1b835861053cdefda581c5d6125192084060f9", 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 0.05s
[INFO] running `Command { std: "docker" "inspect" "84be4a2c2af171a252b823cb0b1b835861053cdefda581c5d6125192084060f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84be4a2c2af171a252b823cb0b1b835861053cdefda581c5d6125192084060f9", kill_on_drop: false }`
[INFO] [stdout] 84be4a2c2af171a252b823cb0b1b835861053cdefda581c5d6125192084060f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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-2023-12-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0818616b32d47492afb5dccfac39297d76c1fecd98580fda3e70f6ae22aabc1f
[INFO] running `Command { std: "docker" "start" "-a" "0818616b32d47492afb5dccfac39297d76c1fecd98580fda3e70f6ae22aabc1f", 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" "0818616b32d47492afb5dccfac39297d76c1fecd98580fda3e70f6ae22aabc1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0818616b32d47492afb5dccfac39297d76c1fecd98580fda3e70f6ae22aabc1f", kill_on_drop: false }`
[INFO] [stdout] 0818616b32d47492afb5dccfac39297d76c1fecd98580fda3e70f6ae22aabc1f
