[INFO] cloning repository https://github.com/Phantomical/hamerkop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Phantomical/hamerkop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhantomical%2Fhamerkop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhantomical%2Fhamerkop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e9e4ec4549964e0f85d2a51ef2929a28b92c912
[INFO] testing Phantomical/hamerkop against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhantomical%2Fhamerkop" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Phantomical/hamerkop on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Phantomical/hamerkop
[INFO] finished tweaking git repo https://github.com/Phantomical/hamerkop
[INFO] tweaked toml for git repo https://github.com/Phantomical/hamerkop written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Phantomical/hamerkop already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "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] 59c4127b46fc647b0a85087e3a3fa2de180376c1c76610a473b7e9935aaf32ec
[INFO] running `Command { std: "docker" "start" "-a" "59c4127b46fc647b0a85087e3a3fa2de180376c1c76610a473b7e9935aaf32ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59c4127b46fc647b0a85087e3a3fa2de180376c1c76610a473b7e9935aaf32ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59c4127b46fc647b0a85087e3a3fa2de180376c1c76610a473b7e9935aaf32ec", kill_on_drop: false }`
[INFO] [stdout] 59c4127b46fc647b0a85087e3a3fa2de180376c1c76610a473b7e9935aaf32ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "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] 2f1d4017045661c3e8b4d7323cc30bd4465f8125e1dd359bce43f6596bd3ab71
[INFO] running `Command { std: "docker" "start" "-a" "2f1d4017045661c3e8b4d7323cc30bd4465f8125e1dd359bce43f6596bd3ab71", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling cooked-waker v5.0.0
[INFO] [stderr]    Compiling slab v0.1.0 (/opt/rustwide/workdir/slab)
[INFO] [stderr]    Compiling uring v0.1.0 (/opt/rustwide/workdir/uring)
[INFO] [stdout] warning: field is never read: `kdropped`
[INFO] [stdout]   --> uring/src/detail.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 |   pub kdropped:       *mut u32,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sqe_head`
[INFO] [stdout]   --> uring/src/detail.rs:44:3
[INFO] [stdout]    |
[INFO] [stdout] 44 |   pub sqe_head:       u32,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `kring_entries`
[INFO] [stdout]   --> uring/src/detail.rs:56:3
[INFO] [stdout]    |
[INFO] [stdout] 56 |   pub kring_entries:  *mut u32,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `kflags`
[INFO] [stdout]   --> uring/src/detail.rs:57:3
[INFO] [stdout]    |
[INFO] [stdout] 57 |   pub kflags:         *mut u32,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `koverflow`
[INFO] [stdout]   --> uring/src/detail.rs:58:3
[INFO] [stdout]    |
[INFO] [stdout] 58 |   pub koverflow:      *mut u32,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling linkme-impl v0.2.2
[INFO] [stderr]    Compiling tokenreplace v0.1.0 (/opt/rustwide/workdir/tokenreplace)
[INFO] [stderr]    Compiling linkme v0.2.2
[INFO] [stderr]    Compiling metrics v0.1.0 (/opt/rustwide/workdir/metrics)
[INFO] [stderr]    Compiling hamerkop v0.1.0 (/opt/rustwide/workdir/hamerkop)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> hamerkop/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(min_specialization, min_const_generics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `min_const_generics` has been stable since 1.51.0 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 `hamerkop`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "2f1d4017045661c3e8b4d7323cc30bd4465f8125e1dd359bce43f6596bd3ab71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f1d4017045661c3e8b4d7323cc30bd4465f8125e1dd359bce43f6596bd3ab71", kill_on_drop: false }`
[INFO] [stdout] 2f1d4017045661c3e8b4d7323cc30bd4465f8125e1dd359bce43f6596bd3ab71
