[INFO] cloning repository https://github.com/code0100fun/rust-fft
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/code0100fun/rust-fft" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcode0100fun%2Frust-fft"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcode0100fun%2Frust-fft'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f5600ab6728b85cf90ebf19fd2e9c7a6b19f45f2
[INFO] testing code0100fun/rust-fft against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcode0100fun%2Frust-fft" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/code0100fun/rust-fft on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/code0100fun/rust-fft
[INFO] finished tweaking git repo https://github.com/code0100fun/rust-fft
[INFO] tweaked toml for git repo https://github.com/code0100fun/rust-fft written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/code0100fun/rust-fft already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: path `/workspace/builds/worker-5/source/src/fft.rs` was erroneously implicitly accepted for library `fft`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[INFO] [stderr] error: the lock file /workspace/builds/worker-5/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[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] [stderr] warning: path `/workspace/builds/worker-5/source/src/fft.rs` was erroneously implicitly accepted for library `fft`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] c4a0a7a9d73ebfab157c0481e079c6dbec2ba75964466b510bc1bed78530601b
[INFO] running `"docker" "start" "-a" "c4a0a7a9d73ebfab157c0481e079c6dbec2ba75964466b510bc1bed78530601b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/fft.rs` was erroneously implicitly accepted for library `fft`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling rust-fft v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::num::Float`
[INFO] [stderr]  --> src/fft.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::num::Float;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^ no `Float` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::num::FloatMath`
[INFO] [stderr]  --> src/fft.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::num::FloatMath;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^ no `FloatMath` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::rand`
[INFO] [stderr]   --> src/fft.rs:11:10
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::rand::{thread_rng, Rng};
[INFO] [stderr]    |          ^^^^ could not find `rand` in `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `range` in this scope
[INFO] [stderr]   --> src/fft.rs:69:18
[INFO] [stderr]    |
[INFO] [stderr] 69 |         for i in range(0, length) {
[INFO] [stderr]    |                  ^^^^^ not found in this scope
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]    |
[INFO] [stderr] 6  | use num::iter::range;
[INFO] [stderr]    |
[INFO] [stderr] 6  | use num::range;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `PI_2` in module `consts`
[INFO] [stderr]   --> src/fft.rs:79:30
[INFO] [stderr]    |
[INFO] [stderr] 79 |         let theta = (consts::PI_2 * k) / n;
[INFO] [stderr]    |                              ^^^^ not found in `consts`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/fft.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slicing_syntax)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/fft.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(macro_rules)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]    --> src/fft.rs:137:3
[INFO] [stderr]     |
[INFO] [stderr] 137 | #[bench]
[INFO] [stderr]     |   ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(soft_unstable)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #64266 <https://github.com/rust-lang/rust/issues/64266>
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `test::Bencher`
[INFO] [stderr]  --> src/fft.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use test::Bencher;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test'
[INFO] [stderr]  --> src/fft.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | extern crate test;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #50297 <https://github.com/rust-lang/rust/issues/50297> for more information
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test'
[INFO] [stderr]  --> src/fft.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use test::Bencher;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #50297 <https://github.com/rust-lang/rust/issues/50297> for more information
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 9 previous errors; 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0432, E0554, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `rust-fft`.
[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" "c4a0a7a9d73ebfab157c0481e079c6dbec2ba75964466b510bc1bed78530601b"`
[INFO] running `"docker" "rm" "-f" "c4a0a7a9d73ebfab157c0481e079c6dbec2ba75964466b510bc1bed78530601b"`
[INFO] [stdout] c4a0a7a9d73ebfab157c0481e079c6dbec2ba75964466b510bc1bed78530601b