[INFO] crate numer 0.1.0 is already in cache
[INFO] testing numer-0.1.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate numer 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate numer 0.1.0 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 numer 0.1.0
[INFO] finished tweaking crates.io crate numer 0.1.0
[INFO] tweaked toml for crates.io crate numer 0.1.0 written to /workspace/builds/worker-1/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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] d20531129c4064d20bcd6d5d6e84b7dfc24ccb13ffddaf570254183d7a3ce795
[INFO] running `"docker" "start" "-a" "d20531129c4064d20bcd6d5d6e84b7dfc24ccb13ffddaf570254183d7a3ce795"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling numer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `core::num::Float`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use core::num::Float;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^ no `Float` in `num`
[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(core_float)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `powi` found for type `f32` in the current scope
[INFO] [stderr]   --> src/lib.rs:22:46
[INFO] [stderr]    |
[INFO] [stderr] 22 |         #[inline] fn root(self) -> $T { self.powi(N::to_usize() as i32).recip() }
[INFO] [stderr]    |                                              ^^^^ method not found in `f32`
[INFO] [stderr] ...
[INFO] [stderr] 26 | impl_Radical_float!(f32);
[INFO] [stderr]    | ------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 10 | use typenum::Pow;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `powi` found for type `f64` in the current scope
[INFO] [stderr]   --> src/lib.rs:22:46
[INFO] [stderr]    |
[INFO] [stderr] 22 |         #[inline] fn root(self) -> $T { self.powi(N::to_usize() as i32).recip() }
[INFO] [stderr]    |                                              ^^^^ method not found in `f64`
[INFO] [stderr] ...
[INFO] [stderr] 27 | impl_Radical_float!(f64);
[INFO] [stderr]    | ------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 10 | use typenum::Pow;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `numer`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d20531129c4064d20bcd6d5d6e84b7dfc24ccb13ffddaf570254183d7a3ce795"`
[INFO] running `"docker" "rm" "-f" "d20531129c4064d20bcd6d5d6e84b7dfc24ccb13ffddaf570254183d7a3ce795"`
[INFO] [stdout] d20531129c4064d20bcd6d5d6e84b7dfc24ccb13ffddaf570254183d7a3ce795