[INFO] fetching crate mm_math 0.0.6...
[INFO] testing mm_math-0.0.6 against 1.44.0 for beta-1.45-1
[INFO] extracting crate mm_math 0.0.6 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate mm_math 0.0.6 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 mm_math 0.0.6
[INFO] finished tweaking crates.io crate mm_math 0.0.6
[INFO] tweaked toml for crates.io crate mm_math 0.0.6 written to /workspace/builds/worker-2/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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stdout] 0732514b8b190a8fa61e0b34feb13c23ac8934baccba055971c6e08025617d4c
[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" "0732514b8b190a8fa61e0b34feb13c23ac8934baccba055971c6e08025617d4c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling mm_math v0.0.6 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved imports `std::num::One`, `std::num::Zero`
[INFO] [stderr]  --> src/vector.rs:6:3
[INFO] [stderr]   |
[INFO] [stderr] 6 |   One,
[INFO] [stderr]   |   ^^^ no `One` in `num`
[INFO] [stderr] 7 |   Zero,
[INFO] [stderr]   |   ^^^^ no `Zero` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | #![feature(zero_one)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `mm_math`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0732514b8b190a8fa61e0b34feb13c23ac8934baccba055971c6e08025617d4c"`
[INFO] running `"docker" "rm" "-f" "0732514b8b190a8fa61e0b34feb13c23ac8934baccba055971c6e08025617d4c"`
[INFO] [stdout] 0732514b8b190a8fa61e0b34feb13c23ac8934baccba055971c6e08025617d4c