[INFO] crate numer 0.1.0 is already in cache
[INFO] testing numer-0.1.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate numer 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate numer 0.1.0 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40bc9033f79c19f372ac26b140c1203abcf646eb6f57d216d4a2b42ec3ea81be
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "40bc9033f79c19f372ac26b140c1203abcf646eb6f57d216d4a2b42ec3ea81be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40bc9033f79c19f372ac26b140c1203abcf646eb6f57d216d4a2b42ec3ea81be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40bc9033f79c19f372ac26b140c1203abcf646eb6f57d216d4a2b42ec3ea81be", kill_on_drop: false }`
[INFO] [stdout] 40bc9033f79c19f372ac26b140c1203abcf646eb6f57d216d4a2b42ec3ea81be
[INFO] running `Command { std: "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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1bc4e823ba696e42e7bcdaceed4fa6b2fd34e66a200e8e50d0661a66a4839f97
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1bc4e823ba696e42e7bcdaceed4fa6b2fd34e66a200e8e50d0661a66a4839f97", kill_on_drop: false }`
[INFO] [stderr]    Compiling numer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `core::num::Float`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use core::num::Float;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^ no `Float` in `num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `powi` found for type `f32` in the current scope
[INFO] [stdout]   --> src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |         #[inline] fn root(self) -> $T { self.powi(N::to_usize() as i32).recip() }
[INFO] [stdout]    |                                              ^^^^ method not found in `f32`
[INFO] [stdout] ...
[INFO] [stdout] 26 | impl_Radical_float!(f32);
[INFO] [stdout]    | ------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 10 | use typenum::Pow;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `powi` found for type `f64` in the current scope
[INFO] [stdout]   --> src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |         #[inline] fn root(self) -> $T { self.powi(N::to_usize() as i32).recip() }
[INFO] [stdout]    |                                              ^^^^ method not found in `f64`
[INFO] [stdout] ...
[INFO] [stdout] 27 | impl_Radical_float!(f64);
[INFO] [stdout]    | ------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 10 | use typenum::Pow;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `numer`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "1bc4e823ba696e42e7bcdaceed4fa6b2fd34e66a200e8e50d0661a66a4839f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bc4e823ba696e42e7bcdaceed4fa6b2fd34e66a200e8e50d0661a66a4839f97", kill_on_drop: false }`
[INFO] [stdout] 1bc4e823ba696e42e7bcdaceed4fa6b2fd34e66a200e8e50d0661a66a4839f97