[INFO] fetching crate heph-inbox 0.2.2...
[INFO] testing heph-inbox-0.2.2 against 1.59.0 for beta-1.60-1
[INFO] extracting crate heph-inbox 0.2.2 into /workspace/builds/worker-67/source
[INFO] validating manifest of crates.io crate heph-inbox 0.2.2 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate heph-inbox 0.2.2
[INFO] finished tweaking crates.io crate heph-inbox 0.2.2
[INFO] tweaked toml for crates.io crate heph-inbox 0.2.2 written to /workspace/builds/worker-67/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a977fdf9f1f3bec4f98d1ca2776620408351fbe887c1f91280bd2c79d38f272
[INFO] running `Command { std: "docker" "start" "-a" "1a977fdf9f1f3bec4f98d1ca2776620408351fbe887c1f91280bd2c79d38f272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a977fdf9f1f3bec4f98d1ca2776620408351fbe887c1f91280bd2c79d38f272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a977fdf9f1f3bec4f98d1ca2776620408351fbe887c1f91280bd2c79d38f272", kill_on_drop: false }`
[INFO] [stdout] 1a977fdf9f1f3bec4f98d1ca2776620408351fbe887c1f91280bd2c79d38f272
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96fb201f01bea7ac5d27bc30667861b45d7eee6166dbd0dbccc9e0fb8024e23b
[INFO] running `Command { std: "docker" "start" "-a" "96fb201f01bea7ac5d27bc30667861b45d7eee6166dbd0dbccc9e0fb8024e23b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling heph-inbox v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:55:1
[INFO] [stdout]    |
[INFO] [stdout] 55 | #![feature(cfg_sanitize, maybe_uninit_extra)]
[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 `heph-inbox` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "96fb201f01bea7ac5d27bc30667861b45d7eee6166dbd0dbccc9e0fb8024e23b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96fb201f01bea7ac5d27bc30667861b45d7eee6166dbd0dbccc9e0fb8024e23b", kill_on_drop: false }`
[INFO] [stdout] 96fb201f01bea7ac5d27bc30667861b45d7eee6166dbd0dbccc9e0fb8024e23b