[INFO] fetching crate rumtk-core 0.17.6...
[INFO] testing rumtk-core-0.17.6 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate rumtk-core 0.17.6 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate rumtk-core 0.17.6
[INFO] finished tweaking crates.io crate rumtk-core 0.17.6
[INFO] tweaked toml for crates.io crate rumtk-core 0.17.6 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rumtk-core 0.17.6 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rumtk-core 0.17.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde-big-array v0.5.1
[INFO] [stderr]   Downloaded cty v0.2.2
[INFO] [stderr]   Downloaded rumtk-arena v0.5.3
[INFO] [stderr]   Downloaded cc v1.4.1
[INFO] [stderr]   Downloaded log v0.4.24
[INFO] [stderr]   Downloaded pyo3-macros v0.29.2
[INFO] [stderr]   Downloaded pyo3-build-config v0.29.2
[INFO] [stderr]   Downloaded clap v4.5.54
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.29.2
[INFO] [stderr]   Downloaded pyo3-ffi v0.29.2
[INFO] [stderr]   Downloaded clap_builder v4.5.54
[INFO] [stderr]   Downloaded branches v0.5.0
[INFO] [stderr]   Downloaded pyo3 v0.29.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] ca057539ffafa64ba6b9f14249341cfb80d175bdccd46be59d836ec4a4685e2d
[INFO] running `Command { std: "docker" "start" "ca057539ffafa64ba6b9f14249341cfb80d175bdccd46be59d836ec4a4685e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca057539ffafa64ba6b9f14249341cfb80d175bdccd46be59d836ec4a4685e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ca057539ffafa64ba6b9f14249341cfb80d175bdccd46be59d836ec4a4685e2d" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca057539ffafa64ba6b9f14249341cfb80d175bdccd46be59d836ec4a4685e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ca057539ffafa64ba6b9f14249341cfb80d175bdccd46be59d836ec4a4685e2d" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling target-lexicon v0.13.5
[INFO] [stderr]    Compiling shlex v2.0.1
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling find-msvc-tools v0.1.10
[INFO] [stderr]    Compiling rand_core v0.10.1
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling cpufeatures v0.3.0
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling anstyle-parse v0.2.6
[INFO] [stderr]    Compiling cc v1.4.1
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.1
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling colorchoice v1.0.3
[INFO] [stderr]    Compiling anstyle-query v1.1.2
[INFO] [stderr]    Compiling chacha20 v0.10.0
[INFO] [stderr]    Compiling branches v0.5.0
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling anstyle v1.0.10
[INFO] [stderr]    Compiling smallvec v1.15.2
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling clap_lex v0.7.4
[INFO] [stderr]    Compiling serde_json v1.0.150
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling encoding_rs v0.8.35
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling bytecount v0.6.9
[INFO] [stderr]    Compiling bytes v1.12.1
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling itoa v1.0.14
[INFO] [stderr]    Compiling hashbrown v0.17.1
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling unicode-segmentation v1.13.2
[INFO] [stderr]    Compiling clap_builder v4.5.54
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling pyo3-build-config v0.29.2
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling syn v3.0.3
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.49
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling mio v1.2.3
[INFO] [stderr]    Compiling pyo3-ffi v0.29.2
[INFO] [stderr]    Compiling pyo3 v0.29.2
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand v0.10.3
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling socket2 v0.6.5
[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/rand-0.10.3/src/lib.rs:37:39
[INFO] [stdout]    |
[INFO] [stdout] 37 | #![cfg_attr(feature = "simd_support", feature(portable_simd))]
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling chardetng v1.0.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rand` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ca057539ffafa64ba6b9f14249341cfb80d175bdccd46be59d836ec4a4685e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca057539ffafa64ba6b9f14249341cfb80d175bdccd46be59d836ec4a4685e2d", kill_on_drop: false }`
[INFO] [stdout] ca057539ffafa64ba6b9f14249341cfb80d175bdccd46be59d836ec4a4685e2d
