[INFO] fetching crate udbg 0.3.1...
[INFO] testing udbg-0.3.1 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate udbg 0.3.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate udbg 0.3.1
[INFO] finished tweaking crates.io crate udbg 0.3.1
[INFO] tweaked toml for crates.io crate udbg 0.3.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate udbg 0.3.1 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 udbg 0.3.1 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]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 0f454863b2b06b66b1a8cfa41a1b2d798fd987d709ba8de6b51d8ca568387eec
[INFO] running `Command { std: "docker" "start" "0f454863b2b06b66b1a8cfa41a1b2d798fd987d709ba8de6b51d8ca568387eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f454863b2b06b66b1a8cfa41a1b2d798fd987d709ba8de6b51d8ca568387eec", 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" "0f454863b2b06b66b1a8cfa41a1b2d798fd987d709ba8de6b51d8ca568387eec" "/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" "0f454863b2b06b66b1a8cfa41a1b2d798fd987d709ba8de6b51d8ca568387eec", 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" "0f454863b2b06b66b1a8cfa41a1b2d798fd987d709ba8de6b51d8ca568387eec" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling serde v1.0.188
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[INFO] [stderr]    Compiling uuid v1.4.1
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling smallvec v1.11.0
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling thiserror v1.0.48
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
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[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling once_cell v1.18.0
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[INFO] [stderr]    Compiling itoa v1.0.9
[INFO] [stderr]    Compiling miniz_oxide v0.7.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.22
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling unicode-bidi v0.3.13
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[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling form_urlencoded v1.2.0
[INFO] [stderr]    Compiling inplace-vec-builder v0.1.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling futures-sink v0.3.28
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling aho-corasick v1.0.5
[INFO] [stderr]    Compiling flate2 v1.0.27
[INFO] [stderr]    Compiling ryu v1.0.15
[INFO] [stderr]    Compiling regex-syntax v0.7.5
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling leb128 v0.2.5
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling binary-merge v0.1.2
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling idna v0.4.0
[INFO] [stderr]    Compiling range-collections v0.2.4
[INFO] [stderr]    Compiling brownstone v3.0.0
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling nom v7.1.3
[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/memoffset-0.9.0/src/lib.rs:63:41
[INFO] [stdout]    |
[INFO] [stdout] 63 | #![cfg_attr(feature = "unstable_const", feature(const_refs_to_cell))]
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `const_refs_to_cell` has been stable since `1.83.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `memoffset` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0f454863b2b06b66b1a8cfa41a1b2d798fd987d709ba8de6b51d8ca568387eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f454863b2b06b66b1a8cfa41a1b2d798fd987d709ba8de6b51d8ca568387eec", kill_on_drop: false }`
[INFO] [stdout] 0f454863b2b06b66b1a8cfa41a1b2d798fd987d709ba8de6b51d8ca568387eec
