[INFO] cloning repository https://github.com/TrolledWoods/only_null
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TrolledWoods/only_null" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrolledWoods%2Fonly_null", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrolledWoods%2Fonly_null'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7c762d626fced6b25dcf8e33e8505c29ac2f5be
[INFO] testing TrolledWoods/only_null against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrolledWoods%2Fonly_null" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TrolledWoods/only_null 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 git repo https://github.com/TrolledWoods/only_null
[INFO] finished tweaking git repo https://github.com/TrolledWoods/only_null
[INFO] tweaked toml for git repo https://github.com/TrolledWoods/only_null written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/TrolledWoods/only_null 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c7fbff8b9b5d72795425f1fa6692e0c20808421bd6441a94f442d661c3a5664
[INFO] running `Command { std: "docker" "start" "-a" "9c7fbff8b9b5d72795425f1fa6692e0c20808421bd6441a94f442d661c3a5664", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c7fbff8b9b5d72795425f1fa6692e0c20808421bd6441a94f442d661c3a5664", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c7fbff8b9b5d72795425f1fa6692e0c20808421bd6441a94f442d661c3a5664", kill_on_drop: false }`
[INFO] [stdout] 9c7fbff8b9b5d72795425f1fa6692e0c20808421bd6441a94f442d661c3a5664
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76a86a48dd3cedb8404f9da7088cb12ded5ed50ecbe4e70a09347db4a24cebe8
[INFO] running `Command { std: "docker" "start" "-a" "76a86a48dd3cedb8404f9da7088cb12ded5ed50ecbe4e70a09347db4a24cebe8", kill_on_drop: false }`
[INFO] [stderr]    Compiling packed v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(ptr_metadata)]
[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 `packed` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "76a86a48dd3cedb8404f9da7088cb12ded5ed50ecbe4e70a09347db4a24cebe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76a86a48dd3cedb8404f9da7088cb12ded5ed50ecbe4e70a09347db4a24cebe8", kill_on_drop: false }`
[INFO] [stdout] 76a86a48dd3cedb8404f9da7088cb12ded5ed50ecbe4e70a09347db4a24cebe8