[INFO] fetching crate dabus 0.5.1...
[INFO] testing dabus-0.5.1 against 1.76.0 for beta-1.77-1
[INFO] extracting crate dabus 0.5.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate dabus 0.5.1 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 dabus 0.5.1
[INFO] finished tweaking crates.io crate dabus 0.5.1
[INFO] tweaked toml for crates.io crate dabus 0.5.1 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] 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] 2082d693e68c687833ac0bee2454d80f50d93498cff46f0dbc65aa2ac4f0dc76
[INFO] running `Command { std: "docker" "start" "-a" "2082d693e68c687833ac0bee2454d80f50d93498cff46f0dbc65aa2ac4f0dc76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2082d693e68c687833ac0bee2454d80f50d93498cff46f0dbc65aa2ac4f0dc76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2082d693e68c687833ac0bee2454d80f50d93498cff46f0dbc65aa2ac4f0dc76", kill_on_drop: false }`
[INFO] [stdout] 2082d693e68c687833ac0bee2454d80f50d93498cff46f0dbc65aa2ac4f0dc76
[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] db2904ffd2bd85c3cce61a2785c64809af8d509582e200b37f6f57ad74ccf747
[INFO] running `Command { std: "docker" "start" "-a" "db2904ffd2bd85c3cce61a2785c64809af8d509582e200b37f6f57ad74ccf747", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]    Compiling concat-idents v1.1.5
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling nanorand v0.7.0
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling flume v0.10.14
[INFO] [stderr]    Compiling thiserror v1.0.57
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling dabus v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(downcast_unchecked)]
[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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(specialization)]
[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:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(extract_if)]
[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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(downcast_unchecked)]
[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(extract_if)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 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 `dabus` (lib) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "db2904ffd2bd85c3cce61a2785c64809af8d509582e200b37f6f57ad74ccf747", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db2904ffd2bd85c3cce61a2785c64809af8d509582e200b37f6f57ad74ccf747", kill_on_drop: false }`
[INFO] [stdout] db2904ffd2bd85c3cce61a2785c64809af8d509582e200b37f6f57ad74ccf747
[INFO] testing dabus-0.5.1 against beta-2024-02-10 for beta-1.77-1
[INFO] extracting crate dabus 0.5.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate dabus 0.5.1 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 dabus 0.5.1
[INFO] finished tweaking crates.io crate dabus 0.5.1
[INFO] tweaked toml for crates.io crate dabus 0.5.1 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] 90316d29d5c76b4131150c985b3b9dd125f2da9bb0275ab39b86cb0ebce4b329
[INFO] running `Command { std: "docker" "start" "-a" "90316d29d5c76b4131150c985b3b9dd125f2da9bb0275ab39b86cb0ebce4b329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90316d29d5c76b4131150c985b3b9dd125f2da9bb0275ab39b86cb0ebce4b329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90316d29d5c76b4131150c985b3b9dd125f2da9bb0275ab39b86cb0ebce4b329", kill_on_drop: false }`
[INFO] [stdout] 90316d29d5c76b4131150c985b3b9dd125f2da9bb0275ab39b86cb0ebce4b329
[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] c235c276f4d3f86bdc6c401f1875bdc528ef5a7cede21654bc4bbb123960d973
[INFO] running `Command { std: "docker" "start" "-a" "c235c276f4d3f86bdc6c401f1875bdc528ef5a7cede21654bc4bbb123960d973", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]    Compiling concat-idents v1.1.5
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling nanorand v0.7.0
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling flume v0.10.14
[INFO] [stderr]    Compiling thiserror v1.0.57
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling dabus v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(downcast_unchecked)]
[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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(specialization)]
[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:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(extract_if)]
[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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(downcast_unchecked)]
[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(extract_if)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 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 `dabus` (lib) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "c235c276f4d3f86bdc6c401f1875bdc528ef5a7cede21654bc4bbb123960d973", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c235c276f4d3f86bdc6c401f1875bdc528ef5a7cede21654bc4bbb123960d973", kill_on_drop: false }`
[INFO] [stdout] c235c276f4d3f86bdc6c401f1875bdc528ef5a7cede21654bc4bbb123960d973
