[INFO] fetching crate str_split_mut 0.4.1...
[INFO] testing str_split_mut-0.4.1 against 1.76.0 for beta-1.77-1
[INFO] extracting crate str_split_mut 0.4.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate str_split_mut 0.4.1 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 str_split_mut 0.4.1
[INFO] finished tweaking crates.io crate str_split_mut 0.4.1
[INFO] tweaked toml for crates.io crate str_split_mut 0.4.1 written to /workspace/builds/worker-5-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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 60445a85b62e32c6638e7513ab8f68cd6ff195f46904c54f1d5464be31a1f980
[INFO] running `Command { std: "docker" "start" "-a" "60445a85b62e32c6638e7513ab8f68cd6ff195f46904c54f1d5464be31a1f980", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60445a85b62e32c6638e7513ab8f68cd6ff195f46904c54f1d5464be31a1f980", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60445a85b62e32c6638e7513ab8f68cd6ff195f46904c54f1d5464be31a1f980", kill_on_drop: false }`
[INFO] [stdout] 60445a85b62e32c6638e7513ab8f68cd6ff195f46904c54f1d5464be31a1f980
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 8d95dc05d8ba75eb2e602be438be84e3e5989b64a9f8b6b905a761b511c28a0f
[INFO] running `Command { std: "docker" "start" "-a" "8d95dc05d8ba75eb2e602be438be84e3e5989b64a9f8b6b905a761b511c28a0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling str_split_mut v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(pattern)]
[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 `str_split_mut` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "8d95dc05d8ba75eb2e602be438be84e3e5989b64a9f8b6b905a761b511c28a0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d95dc05d8ba75eb2e602be438be84e3e5989b64a9f8b6b905a761b511c28a0f", kill_on_drop: false }`
[INFO] [stdout] 8d95dc05d8ba75eb2e602be438be84e3e5989b64a9f8b6b905a761b511c28a0f
[INFO] testing str_split_mut-0.4.1 against beta-2024-02-10 for beta-1.77-1
[INFO] extracting crate str_split_mut 0.4.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate str_split_mut 0.4.1 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 str_split_mut 0.4.1
[INFO] finished tweaking crates.io crate str_split_mut 0.4.1
[INFO] tweaked toml for crates.io crate str_split_mut 0.4.1 written to /workspace/builds/worker-5-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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b88bb93f4427c299d7cebb39d996b13b9786dae460b18fbcf5c5c428888c2334
[INFO] running `Command { std: "docker" "start" "-a" "b88bb93f4427c299d7cebb39d996b13b9786dae460b18fbcf5c5c428888c2334", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b88bb93f4427c299d7cebb39d996b13b9786dae460b18fbcf5c5c428888c2334", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b88bb93f4427c299d7cebb39d996b13b9786dae460b18fbcf5c5c428888c2334", kill_on_drop: false }`
[INFO] [stdout] b88bb93f4427c299d7cebb39d996b13b9786dae460b18fbcf5c5c428888c2334
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] f9cefdc46add09d004a15d823c26da867d78f6f88c9736455fcd668b1960fd1e
[INFO] running `Command { std: "docker" "start" "-a" "f9cefdc46add09d004a15d823c26da867d78f6f88c9736455fcd668b1960fd1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling str_split_mut v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(pattern)]
[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 `str_split_mut` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f9cefdc46add09d004a15d823c26da867d78f6f88c9736455fcd668b1960fd1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9cefdc46add09d004a15d823c26da867d78f6f88c9736455fcd668b1960fd1e", kill_on_drop: false }`
[INFO] [stdout] f9cefdc46add09d004a15d823c26da867d78f6f88c9736455fcd668b1960fd1e
