[INFO] fetching crate cloudlog-adifwatch 0.0.13...
[INFO] testing cloudlog-adifwatch-0.0.13 against 1.59.0 for beta-1.60-1
[INFO] extracting crate cloudlog-adifwatch 0.0.13 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate cloudlog-adifwatch 0.0.13 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 cloudlog-adifwatch 0.0.13
[INFO] finished tweaking crates.io crate cloudlog-adifwatch 0.0.13
[INFO] tweaked toml for crates.io crate cloudlog-adifwatch 0.0.13 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate cloudlog-adifwatch 0.0.13 already has a lockfile, it will not be regenerated
[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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 71be181680337021229a958bd1fb95fb594f9809e10bdb1c4a3bd0a38340ff86
[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" "71be181680337021229a958bd1fb95fb594f9809e10bdb1c4a3bd0a38340ff86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71be181680337021229a958bd1fb95fb594f9809e10bdb1c4a3bd0a38340ff86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71be181680337021229a958bd1fb95fb594f9809e10bdb1c4a3bd0a38340ff86", kill_on_drop: false }`
[INFO] [stdout] 71be181680337021229a958bd1fb95fb594f9809e10bdb1c4a3bd0a38340ff86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 66e371169a0e62eb695d8a68dca3a23750e8679837e92599f0c4c38ff179cd95
[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" "66e371169a0e62eb695d8a68dca3a23750e8679837e92599f0c4c38ff179cd95", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling serde_json v1.0.78
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling chunked_transfer v1.4.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling flate2 v1.0.22
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling webpki v0.22.0
[INFO] [stderr]    Compiling sct v0.7.0
[INFO] [stderr]    Compiling webpki-roots v0.22.2
[INFO] [stderr]    Compiling rustls v0.20.2
[INFO] [stderr]    Compiling ureq v2.4.0
[INFO] [stderr]    Compiling cloudlog-adifwatch v0.0.13 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature 'vec_spare_capacity'
[INFO] [stdout]   --> src/main.rs:65:70
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let tail = unsafe { MaybeUninit::slice_assume_init_mut(self.buffer.spare_capacity_mut()) };
[INFO] [stdout]    |                                                                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #75017 <https://github.com/rust-lang/rust/issues/75017> for more information
[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 E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cloudlog-adifwatch` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "66e371169a0e62eb695d8a68dca3a23750e8679837e92599f0c4c38ff179cd95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66e371169a0e62eb695d8a68dca3a23750e8679837e92599f0c4c38ff179cd95", kill_on_drop: false }`
[INFO] [stdout] 66e371169a0e62eb695d8a68dca3a23750e8679837e92599f0c4c38ff179cd95