[INFO] fetching crate rusk-abi 0.7.0...
[INFO] documenting rusk-abi-0.7.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate rusk-abi 0.7.0 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate rusk-abi 0.7.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rusk-abi 0.7.0
[INFO] finished tweaking crates.io crate rusk-abi 0.7.0
[INFO] tweaked toml for crates.io crate rusk-abi 0.7.0 written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crypto-common v0.1.3
[INFO] [stderr]   Downloaded block-buffer v0.10.2
[INFO] [stderr]   Downloaded digest v0.10.3
[INFO] [stderr]   Downloaded blake2 v0.10.4
[INFO] [stderr]   Downloaded dusk-bls12_381-sign v0.3.0-rc.0
[INFO] [stderr]   Downloaded dusk-schnorr v0.10.0-rc.0
[INFO] [stderr]   Downloaded rusk-vm v0.12.0-rc.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e143f9134bdb91fa0a51e4e734809531bc8e681ab815c641cd20b729cdbcfd9
[INFO] running `Command { std: "docker" "start" "-a" "8e143f9134bdb91fa0a51e4e734809531bc8e681ab815c641cd20b729cdbcfd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e143f9134bdb91fa0a51e4e734809531bc8e681ab815c641cd20b729cdbcfd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e143f9134bdb91fa0a51e4e734809531bc8e681ab815c641cd20b729cdbcfd9", kill_on_drop: false }`
[INFO] [stdout] 8e143f9134bdb91fa0a51e4e734809531bc8e681ab815c641cd20b729cdbcfd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1b532fd6cd92d0be56be0f56004a46536e361dc590ef62e4881270b4e60c8b8
[INFO] running `Command { std: "docker" "start" "-a" "f1b532fd6cd92d0be56be0f56004a46536e361dc590ef62e4881270b4e60c8b8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling array-init v2.0.0
[INFO] [stderr]    Compiling dusk-varint v0.1.0
[INFO] [stderr]    Compiling arbitrary v1.1.0
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]     Checking keccak v0.1.2
[INFO] [stderr]     Checking ahash v0.4.7
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]     Checking memory_units v0.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking blake2b_simd v0.5.11
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]     Checking blake2b_simd v0.3.1
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling parking_lot v0.12.0
[INFO] [stderr]    Compiling canonical v0.7.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/canonical-0.7.1/src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(never_type)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/canonical-0.7.1/src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(never_type)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `canonical` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `canonical` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f1b532fd6cd92d0be56be0f56004a46536e361dc590ef62e4881270b4e60c8b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1b532fd6cd92d0be56be0f56004a46536e361dc590ef62e4881270b4e60c8b8", kill_on_drop: false }`
[INFO] [stdout] f1b532fd6cd92d0be56be0f56004a46536e361dc590ef62e4881270b4e60c8b8