[INFO] fetching crate ofuton 0.1.0...
[INFO] testing ofuton-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ofuton 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate ofuton 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ofuton 0.1.0
[INFO] finished tweaking crates.io crate ofuton 0.1.0
[INFO] tweaked toml for crates.io crate ofuton 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16d08c9c5ddc9dbf041e49fd407b453766ae83d29bb3c81ca52e27aed9978ae6
[INFO] running `Command { std: "docker" "start" "-a" "16d08c9c5ddc9dbf041e49fd407b453766ae83d29bb3c81ca52e27aed9978ae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16d08c9c5ddc9dbf041e49fd407b453766ae83d29bb3c81ca52e27aed9978ae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16d08c9c5ddc9dbf041e49fd407b453766ae83d29bb3c81ca52e27aed9978ae6", kill_on_drop: false }`
[INFO] [stdout] 16d08c9c5ddc9dbf041e49fd407b453766ae83d29bb3c81ca52e27aed9978ae6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9cfcc52e37f851b1321b08ba8f1fa3c57ec164b440fc304f54afe8dc2d445a08
[INFO] running `Command { std: "docker" "start" "-a" "9cfcc52e37f851b1321b08ba8f1fa3c57ec164b440fc304f54afe8dc2d445a08", kill_on_drop: false }`
[INFO] [stderr]    Compiling ndarray v0.10.14
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rustfft v2.1.0
[INFO] [stderr]    Compiling ofuton v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:81:17
[INFO] [stdout]    |
[INFO] [stdout] 81 |             for mut row in input.genrows_mut() {
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.40s
[INFO] running `Command { std: "docker" "inspect" "9cfcc52e37f851b1321b08ba8f1fa3c57ec164b440fc304f54afe8dc2d445a08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cfcc52e37f851b1321b08ba8f1fa3c57ec164b440fc304f54afe8dc2d445a08", kill_on_drop: false }`
[INFO] [stdout] 9cfcc52e37f851b1321b08ba8f1fa3c57ec164b440fc304f54afe8dc2d445a08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8100412799310ca1067a5618974a0a90b55cce4f2a165b1f646f68f1043a3c0
[INFO] running `Command { std: "docker" "start" "-a" "e8100412799310ca1067a5618974a0a90b55cce4f2a165b1f646f68f1043a3c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling ofuton v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:81:17
[INFO] [stdout]    |
[INFO] [stdout] 81 |             for mut row in input.genrows_mut() {
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:81:17
[INFO] [stdout]    |
[INFO] [stdout] 81 |             for mut row in input.genrows_mut() {
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `Command { std: "docker" "inspect" "e8100412799310ca1067a5618974a0a90b55cce4f2a165b1f646f68f1043a3c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8100412799310ca1067a5618974a0a90b55cce4f2a165b1f646f68f1043a3c0", kill_on_drop: false }`
[INFO] [stdout] e8100412799310ca1067a5618974a0a90b55cce4f2a165b1f646f68f1043a3c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4f0f549669337fd102d5fa9fd0a54684c6d28fb2d80f244ebf953d0ea461cc7a
[INFO] running `Command { std: "docker" "start" "-a" "4f0f549669337fd102d5fa9fd0a54684c6d28fb2d80f244ebf953d0ea461cc7a", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:81:17
[INFO] [stderr]    |
[INFO] [stderr] 81 |             for mut row in input.genrows_mut() {
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ofuton` (lib) generated 1 warning
[INFO] [stderr] warning: `ofuton` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ofuton-f13d76a01dca4df8)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_fft ... ok
[INFO] [stdout] test tests::test_fft2 ... ok
[INFO] [stdout] test tests::test_inverse_fft2 ... ok
[INFO] [stderr]    Doc-tests ofuton
[INFO] [stdout] test tests::test_inverse_fft ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4f0f549669337fd102d5fa9fd0a54684c6d28fb2d80f244ebf953d0ea461cc7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f0f549669337fd102d5fa9fd0a54684c6d28fb2d80f244ebf953d0ea461cc7a", kill_on_drop: false }`
[INFO] [stdout] 4f0f549669337fd102d5fa9fd0a54684c6d28fb2d80f244ebf953d0ea461cc7a