[INFO] fetching crate ur-registry 1.0.8...
[INFO] testing ur-registry-1.0.8 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate ur-registry 1.0.8 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate ur-registry 1.0.8
[INFO] finished tweaking crates.io crate ur-registry 1.0.8
[INFO] tweaked toml for crates.io crate ur-registry 1.0.8 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ur-registry 1.0.8 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 ur-registry 1.0.8 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
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror-core-impl v1.0.50
[INFO] [stderr]   Downloaded prost-types v0.11.9
[INFO] [stderr]   Downloaded prost v0.11.9
[INFO] [stderr]   Downloaded thiserror-core v1.0.50
[INFO] [stderr]   Downloaded phf_shared v0.11.2
[INFO] [stderr]   Downloaded libflate_lz77 v2.3.0
[INFO] [stderr]   Downloaded phf_macros v0.11.2
[INFO] [stderr]   Downloaded crc v3.2.1
[INFO] [stderr]   Downloaded bitcoin-private v0.1.0
[INFO] [stderr]   Downloaded minicbor v0.19.1
[INFO] [stderr]   Downloaded prost-derive v0.11.9
[INFO] [stderr]   Downloaded prost-build v0.11.9
[INFO] [stderr]   Downloaded minicbor-derive v0.13.0
[INFO] [stderr]   Downloaded bitcoin_hashes v0.12.0
[INFO] [stderr]   Downloaded tinyvec v1.8.1
[INFO] [stderr]   Downloaded libflate v2.2.2
[INFO] [stderr]   Downloaded rle-decode-fast v1.0.3
[INFO] [stderr]   Downloaded keystone-ur v0.1.0
[INFO] [stderr]   Downloaded phf v0.11.2
[INFO] [stderr]   Downloaded prettyplease v0.1.25
[INFO] [stderr]   Downloaded syn v2.0.94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 279e704eb0076c2386ff0de8b5223932319edff3e46f14a979350466fed8172d
[INFO] running `Command { std: "docker" "start" "279e704eb0076c2386ff0de8b5223932319edff3e46f14a979350466fed8172d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "279e704eb0076c2386ff0de8b5223932319edff3e46f14a979350466fed8172d", 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" "279e704eb0076c2386ff0de8b5223932319edff3e46f14a979350466fed8172d" "/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" "279e704eb0076c2386ff0de8b5223932319edff3e46f14a979350466fed8172d", 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" "279e704eb0076c2386ff0de8b5223932319edff3e46f14a979350466fed8172d" "/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 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling bitcoin-private v0.1.0
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling minicbor v0.19.1
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling no_std_io2 v0.9.4
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling rle-decode-fast v1.0.3
[INFO] [stderr]    Compiling cpufeatures v0.2.16
[INFO] [stderr]    Compiling bytes v1.9.0
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling thiserror-core v1.0.50
[INFO] [stderr]    Compiling crc-catalog v2.4.0
[INFO] [stderr]    Compiling crc v3.2.1
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling bitcoin_hashes v0.12.0
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling syn v2.0.94
[INFO] [stderr]    Compiling libflate_lz77 v2.3.0
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling dary_heap v0.3.9
[INFO] [stderr]    Compiling bs58 v0.5.1
[INFO] [stderr]    Compiling libflate v2.2.2
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling phf_macros v0.11.2
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling thiserror-core-impl v1.0.50
[INFO] [stderr]    Compiling phf v0.11.2
[INFO] [stderr]    Compiling keystone-ur v0.1.0
[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/thiserror-core-1.0.50/src/lib.rs:239:35
[INFO] [stdout]     |
[INFO] [stdout] 239 | #![cfg_attr(not(feature = "std"), feature(error_in_core))]
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `thiserror-core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "279e704eb0076c2386ff0de8b5223932319edff3e46f14a979350466fed8172d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "279e704eb0076c2386ff0de8b5223932319edff3e46f14a979350466fed8172d", kill_on_drop: false }`
[INFO] [stdout] 279e704eb0076c2386ff0de8b5223932319edff3e46f14a979350466fed8172d
