[INFO] crate rust_graphics_log 0.1.7 is already in cache
[INFO] testing rust_graphics_log-0.1.7 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate rust_graphics_log 0.1.7 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rust_graphics_log 0.1.7 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rust_graphics_log 0.1.7
[INFO] finished tweaking crates.io crate rust_graphics_log 0.1.7
[INFO] tweaked toml for crates.io crate rust_graphics_log 0.1.7 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate rust_graphics_log 0.1.7 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] 8d144c94df51ec8d6de098408790deeaef41b787b5a5f6f39df7017367416641
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "8d144c94df51ec8d6de098408790deeaef41b787b5a5f6f39df7017367416641"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust_graphics_log v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(thread_id_value)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]  --> src/lib.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn get_thread_id() -> u64 {
[INFO] [stderr]   |                           --- expected `u64` because of return type
[INFO] [stderr] 4 |     return std::thread::current().id().as_u64();
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `u64`, found struct `std::num::NonZeroU64`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `rust_graphics_log`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8d144c94df51ec8d6de098408790deeaef41b787b5a5f6f39df7017367416641"`
[INFO] running `"docker" "rm" "-f" "8d144c94df51ec8d6de098408790deeaef41b787b5a5f6f39df7017367416641"`
[INFO] [stdout] 8d144c94df51ec8d6de098408790deeaef41b787b5a5f6f39df7017367416641