[INFO] fetching crate my-bfgs 0.1.2...
[INFO] testing my-bfgs-0.1.2 against 1.90.0 for beta-1.91-3
[INFO] extracting crate my-bfgs 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate my-bfgs 0.1.2
[INFO] finished tweaking crates.io crate my-bfgs 0.1.2
[INFO] tweaked toml for crates.io crate my-bfgs 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate my-bfgs 0.1.2 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] [stderr]       Adding ndarray v0.15.6 (available: v0.16.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded spectral v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5d5299226e087a950e9fdb9c977d28e98fa0def404cdaf79b861a51fee56476
[INFO] running `Command { std: "docker" "start" "-a" "d5d5299226e087a950e9fdb9c977d28e98fa0def404cdaf79b861a51fee56476", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5d5299226e087a950e9fdb9c977d28e98fa0def404cdaf79b861a51fee56476", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5d5299226e087a950e9fdb9c977d28e98fa0def404cdaf79b861a51fee56476", kill_on_drop: false }`
[INFO] [stdout] d5d5299226e087a950e9fdb9c977d28e98fa0def404cdaf79b861a51fee56476
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d75ecd44ce5daa173792fa18919558559c1b3a47d21a5ab64e48ec73514949b
[INFO] running `Command { std: "docker" "start" "-a" "7d75ecd44ce5daa173792fa18919558559c1b3a47d21a5ab64e48ec73514949b", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling my-bfgs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.24s
[INFO] running `Command { std: "docker" "inspect" "7d75ecd44ce5daa173792fa18919558559c1b3a47d21a5ab64e48ec73514949b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d75ecd44ce5daa173792fa18919558559c1b3a47d21a5ab64e48ec73514949b", kill_on_drop: false }`
[INFO] [stdout] 7d75ecd44ce5daa173792fa18919558559c1b3a47d21a5ab64e48ec73514949b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ed10becb6b1ef111ed918cd0d0dc410a7cbd4edd07fd1bfeb1dbb4fc9337570
[INFO] running `Command { std: "docker" "start" "-a" "6ed10becb6b1ef111ed918cd0d0dc410a7cbd4edd07fd1bfeb1dbb4fc9337570", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-bigint v0.1.45
[INFO] [stderr]    Compiling rustc-serialize v0.3.25
[INFO] [stderr]    Compiling num-complex v0.1.44
[INFO] [stderr]    Compiling num-rational v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num v0.1.43
[INFO] [stderr]    Compiling spectral v0.6.0
[INFO] [stderr]    Compiling my-bfgs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature `test`: `bench` is a part of custom test frameworks which are unstable
[INFO] [stdout]  --> src/benchmark.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[bench]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #50297 <https://github.com/rust-lang/rust/issues/50297> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `test`
[INFO] [stdout]  --> src/benchmark.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate test;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #50297 <https://github.com/rust-lang/rust/issues/50297> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `test`
[INFO] [stdout]  --> src/benchmark.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use test::Bencher;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #50297 <https://github.com/rust-lang/rust/issues/50297> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `test`
[INFO] [stdout]  --> src/benchmark.rs:9:39
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn test_x_fourth_p_1000(bencher: &mut Bencher) {
[INFO] [stdout]   |                                       ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #50297 <https://github.com/rust-lang/rust/issues/50297> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `test`
[INFO] [stdout]   --> src/benchmark.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |     bencher.iter(|| {
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #50297 <https://github.com/rust-lang/rust/issues/50297> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `my-bfgs` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "6ed10becb6b1ef111ed918cd0d0dc410a7cbd4edd07fd1bfeb1dbb4fc9337570", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ed10becb6b1ef111ed918cd0d0dc410a7cbd4edd07fd1bfeb1dbb4fc9337570", kill_on_drop: false }`
[INFO] [stdout] 6ed10becb6b1ef111ed918cd0d0dc410a7cbd4edd07fd1bfeb1dbb4fc9337570
