[INFO] fetching crate simple-chunk-allocator 0.1.4...
[INFO] testing simple-chunk-allocator-0.1.4 against 1.60.0 for beta-1.61-1
[INFO] extracting crate simple-chunk-allocator 0.1.4 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate simple-chunk-allocator 0.1.4 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] removed /workspace/builds/worker-20/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate simple-chunk-allocator 0.1.4
[INFO] finished tweaking crates.io crate simple-chunk-allocator 0.1.4
[INFO] tweaked toml for crates.io crate simple-chunk-allocator 0.1.4 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate crates.io crate simple-chunk-allocator 0.1.4 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]  Downloading crates ...
[INFO] [stderr]   Downloaded raw-cpuid v10.2.0
[INFO] [stderr]   Downloaded x86 v0.46.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 66c8624425298b86567375af7ce3028ffc47c63ada60edb2bab8ac8f54b589df
[INFO] running `Command { std: "docker" "start" "-a" "66c8624425298b86567375af7ce3028ffc47c63ada60edb2bab8ac8f54b589df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66c8624425298b86567375af7ce3028ffc47c63ada60edb2bab8ac8f54b589df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66c8624425298b86567375af7ce3028ffc47c63ada60edb2bab8ac8f54b589df", kill_on_drop: false }`
[INFO] [stdout] 66c8624425298b86567375af7ce3028ffc47c63ada60edb2bab8ac8f54b589df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 0a6752880cf0486e23e605db2a357a6e7a360ea8147de1cbe69180fbfd8391a2
[INFO] running `Command { std: "docker" "start" "-a" "0a6752880cf0486e23e605db2a357a6e7a360ea8147de1cbe69180fbfd8391a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling simple-chunk-allocator v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:128:1
[INFO] [stdout]     |
[INFO] [stdout] 128 | #![feature(allocator_api)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:129:1
[INFO] [stdout]     |
[INFO] [stdout] 129 | #![feature(const_mut_refs)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:130:1
[INFO] [stdout]     |
[INFO] [stdout] 130 | #![feature(const_for)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:131:1
[INFO] [stdout]     |
[INFO] [stdout] 131 | #![feature(nonnull_slice_from_raw_parts)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:132:1
[INFO] [stdout]     |
[INFO] [stdout] 132 | #![feature(slice_ptr_get)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:133:1
[INFO] [stdout]     |
[INFO] [stdout] 133 | #![feature(const_ptr_is_null)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:134:1
[INFO] [stdout]     |
[INFO] [stdout] 134 | #![feature(core_intrinsics)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:135:1
[INFO] [stdout]     |
[INFO] [stdout] 135 | #![feature(const_align_offset)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simple-chunk-allocator` due to 9 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0a6752880cf0486e23e605db2a357a6e7a360ea8147de1cbe69180fbfd8391a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a6752880cf0486e23e605db2a357a6e7a360ea8147de1cbe69180fbfd8391a2", kill_on_drop: false }`
[INFO] [stdout] 0a6752880cf0486e23e605db2a357a6e7a360ea8147de1cbe69180fbfd8391a2