[INFO] fetching crate dep-obj 0.34.1...
[INFO] testing dep-obj-0.34.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate dep-obj 0.34.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate dep-obj 0.34.1 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dep-obj 0.34.1
[INFO] finished tweaking crates.io crate dep-obj 0.34.1
[INFO] tweaked toml for crates.io crate dep-obj 0.34.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate dep-obj 0.34.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded educe v0.4.18
[INFO] [stderr]   Downloaded components-arena v2.1.5
[INFO] [stderr]   Downloaded dyn-context v0.10.8
[INFO] [stderr]   Downloaded panicking v0.0.1
[INFO] [stderr]   Downloaded phantom-type v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ac55b70612146433431d3b029544b6d12134ff61fdbb37037aaa83a53365e782
[INFO] running `Command { std: "docker" "start" "-a" "ac55b70612146433431d3b029544b6d12134ff61fdbb37037aaa83a53365e782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac55b70612146433431d3b029544b6d12134ff61fdbb37037aaa83a53365e782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac55b70612146433431d3b029544b6d12134ff61fdbb37037aaa83a53365e782", kill_on_drop: false }`
[INFO] [stdout] ac55b70612146433431d3b029544b6d12134ff61fdbb37037aaa83a53365e782
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 937bdea67fdc15a837cd9cb18ec91d88ff58d3ff370f37f7da92ac5b7f7c5de6
[INFO] running `Command { std: "docker" "start" "-a" "937bdea67fdc15a837cd9cb18ec91d88ff58d3ff370f37f7da92ac5b7f7c5de6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.77
[INFO] [stderr]    Compiling generics v0.3.2
[INFO] [stderr]    Compiling panicking v0.0.1
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling macro-attr-2018 v1.1.1
[INFO] [stderr]    Compiling num-bigint v0.4.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling rand v0.8.4
[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/memoffset-0.6.4/src/lib.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 | /     feature(
[INFO] [stdout] 63 | |         const_ptr_offset_from,
[INFO] [stdout] 64 | |         const_maybe_uninit_as_ptr,
[INFO] [stdout] 65 | |         const_raw_ptr_deref,
[INFO] [stdout] 66 | |         const_refs_to_cell,
[INFO] [stdout] 67 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `const_raw_ptr_deref` has been stable since 1.58.0 and no longer requires an attribute to enable
[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 `memoffset` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "937bdea67fdc15a837cd9cb18ec91d88ff58d3ff370f37f7da92ac5b7f7c5de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "937bdea67fdc15a837cd9cb18ec91d88ff58d3ff370f37f7da92ac5b7f7c5de6", kill_on_drop: false }`
[INFO] [stdout] 937bdea67fdc15a837cd9cb18ec91d88ff58d3ff370f37f7da92ac5b7f7c5de6