[INFO] fetching crate choice_nocase 0.2.0...
[INFO] testing choice_nocase-0.2.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate choice_nocase 0.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate choice_nocase 0.2.0 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 choice_nocase 0.2.0
[INFO] finished tweaking crates.io crate choice_nocase 0.2.0
[INFO] tweaked toml for crates.io crate choice_nocase 0.2.0 written to /workspace/builds/worker-0-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] [stderr]     Updating crates.io index
[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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c1e27626db18f08a000b308fa2d552e62c9d4ceb0bbc9c4376bac479f8cbcb62
[INFO] running `Command { std: "docker" "start" "-a" "c1e27626db18f08a000b308fa2d552e62c9d4ceb0bbc9c4376bac479f8cbcb62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1e27626db18f08a000b308fa2d552e62c9d4ceb0bbc9c4376bac479f8cbcb62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1e27626db18f08a000b308fa2d552e62c9d4ceb0bbc9c4376bac479f8cbcb62", kill_on_drop: false }`
[INFO] [stdout] c1e27626db18f08a000b308fa2d552e62c9d4ceb0bbc9c4376bac479f8cbcb62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d39c98b296d1cde1cc6f6068d551cacfe863e171faf778b3846b0b64460a0e15
[INFO] running `Command { std: "docker" "start" "-a" "d39c98b296d1cde1cc6f6068d551cacfe863e171faf778b3846b0b64460a0e15", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling choice_nocase v0.2.0 (/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(extend_one)]
[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 `choice_nocase` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d39c98b296d1cde1cc6f6068d551cacfe863e171faf778b3846b0b64460a0e15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d39c98b296d1cde1cc6f6068d551cacfe863e171faf778b3846b0b64460a0e15", kill_on_drop: false }`
[INFO] [stdout] d39c98b296d1cde1cc6f6068d551cacfe863e171faf778b3846b0b64460a0e15
[INFO] testing choice_nocase-0.2.0 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate choice_nocase 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate choice_nocase 0.2.0 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 choice_nocase 0.2.0
[INFO] finished tweaking crates.io crate choice_nocase 0.2.0
[INFO] tweaked toml for crates.io crate choice_nocase 0.2.0 written to /workspace/builds/worker-0-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] [stderr]     Updating crates.io index
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] cac2e959c74ea9dbb3b1c9529314d7f0eb4bdc366fd93a8fbe7e5bab5ece73ce
[INFO] running `Command { std: "docker" "start" "-a" "cac2e959c74ea9dbb3b1c9529314d7f0eb4bdc366fd93a8fbe7e5bab5ece73ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cac2e959c74ea9dbb3b1c9529314d7f0eb4bdc366fd93a8fbe7e5bab5ece73ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cac2e959c74ea9dbb3b1c9529314d7f0eb4bdc366fd93a8fbe7e5bab5ece73ce", kill_on_drop: false }`
[INFO] [stdout] cac2e959c74ea9dbb3b1c9529314d7f0eb4bdc366fd93a8fbe7e5bab5ece73ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] cb05bc3fc9149be8223a5842293bfab94e7f398066d774d32b64c3af8557f788
[INFO] running `Command { std: "docker" "start" "-a" "cb05bc3fc9149be8223a5842293bfab94e7f398066d774d32b64c3af8557f788", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling choice_nocase v0.2.0 (/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(extend_one)]
[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 `choice_nocase` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "cb05bc3fc9149be8223a5842293bfab94e7f398066d774d32b64c3af8557f788", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb05bc3fc9149be8223a5842293bfab94e7f398066d774d32b64c3af8557f788", kill_on_drop: false }`
[INFO] [stdout] cb05bc3fc9149be8223a5842293bfab94e7f398066d774d32b64c3af8557f788
