[INFO] fetching crate mysh 0.1.8...
[INFO] testing mysh-0.1.8 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mysh 0.1.8 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate mysh 0.1.8
[INFO] finished tweaking crates.io crate mysh 0.1.8
[INFO] tweaked toml for crates.io crate mysh 0.1.8 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mysh 0.1.8 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 112 packages to latest compatible versions
[INFO] [stderr]       Adding colored v2.2.0 (available: v3.0.0)
[INFO] [stderr]       Adding reedline v0.36.0 (available: v0.43.0)
[INFO] [stderr]       Adding serde-reflection v0.4.0 (available: v0.5.0)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c845d616958a4c391b6360b074573aa11e148ce943731a2c9a1b21fc81bd093c
[INFO] running `Command { std: "docker" "start" "-a" "c845d616958a4c391b6360b074573aa11e148ce943731a2c9a1b21fc81bd093c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c845d616958a4c391b6360b074573aa11e148ce943731a2c9a1b21fc81bd093c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c845d616958a4c391b6360b074573aa11e148ce943731a2c9a1b21fc81bd093c", kill_on_drop: false }`
[INFO] [stdout] c845d616958a4c391b6360b074573aa11e148ce943731a2c9a1b21fc81bd093c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0989c6f363de7c574a8a8d86d1f2c5fe0b2b1c0fee5cf1f1d216361c46f9be96
[INFO] running `Command { std: "docker" "start" "-a" "0989c6f363de7c574a8a8d86d1f2c5fe0b2b1c0fee5cf1f1d216361c46f9be96", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling rustversion v1.0.22
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling iana-time-zone v0.1.64
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling nu-ansi-term v0.50.3
[INFO] [stderr]    Compiling vte v0.14.1
[INFO] [stderr]    Compiling strum v0.26.3
[INFO] [stderr]    Compiling colored v2.2.0
[INFO] [stderr]    Compiling indoc v2.0.7
[INFO] [stderr]    Compiling strip-ansi-escapes v0.2.1
[INFO] [stderr]    Compiling uuid v1.18.1
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]    Compiling signal-hook-registry v1.4.6
[INFO] [stderr]    Compiling mio v1.1.0
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling signal-hook-mio v0.2.5
[INFO] [stderr]    Compiling bitflags v2.10.0
[INFO] [stderr]    Compiling ctrlc v3.5.1
[INFO] [stderr]    Compiling fd-lock v4.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling strum_macros v0.26.4
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling crossterm v0.28.1
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling serde-reflection v0.3.6
[INFO] [stderr]    Compiling serde-reflection v0.4.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling mysh_derive v0.1.7
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/mysh_derive-0.1.7/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(extend_one)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mysh_derive` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0989c6f363de7c574a8a8d86d1f2c5fe0b2b1c0fee5cf1f1d216361c46f9be96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0989c6f363de7c574a8a8d86d1f2c5fe0b2b1c0fee5cf1f1d216361c46f9be96", kill_on_drop: false }`
[INFO] [stdout] 0989c6f363de7c574a8a8d86d1f2c5fe0b2b1c0fee5cf1f1d216361c46f9be96