[INFO] fetching crate dep-obj 0.8.0...
[INFO] checking dep-obj-0.8.0 against beta for pr-78714
[INFO] extracting crate dep-obj 0.8.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate dep-obj 0.8.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dep-obj 0.8.0
[INFO] finished tweaking crates.io crate dep-obj 0.8.0
[INFO] tweaked toml for crates.io crate dep-obj 0.8.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate dep-obj 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e021fe2805ec5fbc1fa13b683a05ab99d7fc33c48472fb809e373abe43bc8755
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e021fe2805ec5fbc1fa13b683a05ab99d7fc33c48472fb809e373abe43bc8755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e021fe2805ec5fbc1fa13b683a05ab99d7fc33c48472fb809e373abe43bc8755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e021fe2805ec5fbc1fa13b683a05ab99d7fc33c48472fb809e373abe43bc8755", kill_on_drop: false }`
[INFO] [stdout] e021fe2805ec5fbc1fa13b683a05ab99d7fc33c48472fb809e373abe43bc8755
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c537b0b6da1cc6a8963d72a899e723fc7c6f215fc4b970d6e4d08b2ac8585db
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7c537b0b6da1cc6a8963d72a899e723fc7c6f215fc4b970d6e4d08b2ac8585db", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling paste v1.0.1
[INFO] [stderr]     Checking generics v0.1.3
[INFO] [stderr]     Checking generics v0.2.5
[INFO] [stderr]     Checking dyn-clone v1.0.2
[INFO] [stderr]     Checking macro-attr-2018 v1.1.0
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/memoffset-0.5.6/src/lib.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 | /     feature(
[INFO] [stdout] 63 | |         ptr_offset_from,
[INFO] [stdout] 64 | |         const_fn,
[INFO] [stdout] 65 | |         const_ptr_offset_from,
[INFO] [stdout] 66 | |         const_maybe_uninit_as_ptr,
[INFO] [stdout] 67 | |         const_raw_ptr_deref,
[INFO] [stdout] 68 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `memoffset`
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/memoffset-0.5.6/src/lib.rs:70:39
[INFO] [stdout]    |
[INFO] [stdout] 70 | #![cfg_attr(feature = "unstable_raw", feature(raw_ref_macros))]
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7c537b0b6da1cc6a8963d72a899e723fc7c6f215fc4b970d6e4d08b2ac8585db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c537b0b6da1cc6a8963d72a899e723fc7c6f215fc4b970d6e4d08b2ac8585db", kill_on_drop: false }`
[INFO] [stdout] 7c537b0b6da1cc6a8963d72a899e723fc7c6f215fc4b970d6e4d08b2ac8585db