[INFO] fetching crate veryfast 0.3.1...
[INFO] testing veryfast-0.3.1 against 1.44.0 for beta-1.45-1
[INFO] extracting crate veryfast 0.3.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate veryfast 0.3.1 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate veryfast 0.3.1
[INFO] finished tweaking crates.io crate veryfast 0.3.1
[INFO] tweaked toml for crates.io crate veryfast 0.3.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 78428cb5ca705e54a6087f7a6f005d7b94a9bbb1ec03516940270d5686a5a208
[INFO] running `"docker" "start" "-a" "78428cb5ca705e54a6087f7a6f005d7b94a9bbb1ec03516940270d5686a5a208"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling crossbeam v0.3.2
[INFO] [stderr]    Compiling veryfast v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unknown lint: `needless_pass_by_value`
[INFO] [stderr]    --> src/pool.rs:227:13
[INFO] [stderr]     |
[INFO] [stderr] 227 |     #[allow(needless_pass_by_value)]
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `inline_always`
[INFO] [stderr]    --> src/pool.rs:251:13
[INFO] [stderr]     |
[INFO] [stderr] 251 |     #[allow(inline_always)]
[INFO] [stderr]     |             ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `inline_always`
[INFO] [stderr]    --> src/pool.rs:259:13
[INFO] [stderr]     |
[INFO] [stderr] 259 |     #[allow(inline_always)]
[INFO] [stderr]     |             ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `mutex_atomic`
[INFO] [stderr]  --> src/small_buffer.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![allow(mutex_atomic)]
[INFO] [stderr]   |          ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::heap`
[INFO] [stderr]   --> src/pool.rs:73:10
[INFO] [stderr]    |
[INFO] [stderr] 73 | use std::heap::{Heap, Layout, Alloc};
[INFO] [stderr]    |          ^^^^ could not find `heap` in `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(allocator_api)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(arc_counts)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/small_buffer.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::mem::uninitialized;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/small_buffer.rs:31:28
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let buf = unsafe { uninitialized() };
[INFO] [stderr]    |                            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/pool.rs:194:13
[INFO] [stderr]     |
[INFO] [stderr] 182 |     fn expand(&self) -> *mut T {
[INFO] [stderr]     |                         ------ expected `*mut T` because of return type
[INFO] [stderr] ...
[INFO] [stderr] 194 |             extra
[INFO] [stderr]     |             ^^^^^ types differ in mutability
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected raw pointer `*mut T`
[INFO] [stderr]                found raw pointer `*const T`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors; 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `veryfast`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "78428cb5ca705e54a6087f7a6f005d7b94a9bbb1ec03516940270d5686a5a208"`
[INFO] running `"docker" "rm" "-f" "78428cb5ca705e54a6087f7a6f005d7b94a9bbb1ec03516940270d5686a5a208"`
[INFO] [stdout] 78428cb5ca705e54a6087f7a6f005d7b94a9bbb1ec03516940270d5686a5a208