[INFO] fetching crate either-slot 1.0.0...
[INFO] testing either-slot-1.0.0 against 1.76.0 for beta-1.77-1
[INFO] extracting crate either-slot 1.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate either-slot 1.0.0 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 either-slot 1.0.0
[INFO] finished tweaking crates.io crate either-slot 1.0.0
[INFO] tweaked toml for crates.io crate either-slot 1.0.0 written to /workspace/builds/worker-7-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] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tuple_list v0.1.3
[INFO] [stderr]   Downloaded loom v0.7.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e6d5143b274e8b441431c4376b94ac47d225df6ee037a496200507953c2f8931
[INFO] running `Command { std: "docker" "start" "-a" "e6d5143b274e8b441431c4376b94ac47d225df6ee037a496200507953c2f8931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6d5143b274e8b441431c4376b94ac47d225df6ee037a496200507953c2f8931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6d5143b274e8b441431c4376b94ac47d225df6ee037a496200507953c2f8931", kill_on_drop: false }`
[INFO] [stdout] e6d5143b274e8b441431c4376b94ac47d225df6ee037a496200507953c2f8931
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 847ae00053878892382b2c21b37966ad1e9a9389fb75bb446ad99877d1e92d15
[INFO] running `Command { std: "docker" "start" "-a" "847ae00053878892382b2c21b37966ad1e9a9389fb75bb446ad99877d1e92d15", kill_on_drop: false }`
[INFO] [stderr]    Compiling tuple_list v0.1.3
[INFO] [stderr]    Compiling either-slot v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(allocator_api)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(trusted_len)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `either-slot` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "847ae00053878892382b2c21b37966ad1e9a9389fb75bb446ad99877d1e92d15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "847ae00053878892382b2c21b37966ad1e9a9389fb75bb446ad99877d1e92d15", kill_on_drop: false }`
[INFO] [stdout] 847ae00053878892382b2c21b37966ad1e9a9389fb75bb446ad99877d1e92d15
[INFO] testing either-slot-1.0.0 against beta-2024-02-10 for beta-1.77-1
[INFO] extracting crate either-slot 1.0.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate either-slot 1.0.0 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 either-slot 1.0.0
[INFO] finished tweaking crates.io crate either-slot 1.0.0
[INFO] tweaked toml for crates.io crate either-slot 1.0.0 written to /workspace/builds/worker-7-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] [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-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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 144f33d282292bc1fa75c6f2891ddada99b508ad713035b6d363cc686229fe01
[INFO] running `Command { std: "docker" "start" "-a" "144f33d282292bc1fa75c6f2891ddada99b508ad713035b6d363cc686229fe01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "144f33d282292bc1fa75c6f2891ddada99b508ad713035b6d363cc686229fe01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "144f33d282292bc1fa75c6f2891ddada99b508ad713035b6d363cc686229fe01", kill_on_drop: false }`
[INFO] [stdout] 144f33d282292bc1fa75c6f2891ddada99b508ad713035b6d363cc686229fe01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 34e5ac440b5aeb0c5c1583bf3c3b53399c194e7b56781162b97d1d3591e9f5c9
[INFO] running `Command { std: "docker" "start" "-a" "34e5ac440b5aeb0c5c1583bf3c3b53399c194e7b56781162b97d1d3591e9f5c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling tuple_list v0.1.3
[INFO] [stderr]    Compiling either-slot v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(allocator_api)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(trusted_len)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `either-slot` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "34e5ac440b5aeb0c5c1583bf3c3b53399c194e7b56781162b97d1d3591e9f5c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34e5ac440b5aeb0c5c1583bf3c3b53399c194e7b56781162b97d1d3591e9f5c9", kill_on_drop: false }`
[INFO] [stdout] 34e5ac440b5aeb0c5c1583bf3c3b53399c194e7b56781162b97d1d3591e9f5c9
