[INFO] fetching crate blackbox 0.2.0...
[INFO] testing blackbox-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate blackbox 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate blackbox 0.2.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blackbox 0.2.0
[INFO] finished tweaking crates.io crate blackbox 0.2.0
[INFO] tweaked toml for crates.io crate blackbox 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate blackbox 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c548269481988c3ae3f26c5ea6c9f67302b5e42a006565b50924e3f316e51b9
[INFO] running `Command { std: "docker" "start" "-a" "7c548269481988c3ae3f26c5ea6c9f67302b5e42a006565b50924e3f316e51b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c548269481988c3ae3f26c5ea6c9f67302b5e42a006565b50924e3f316e51b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c548269481988c3ae3f26c5ea6c9f67302b5e42a006565b50924e3f316e51b9", kill_on_drop: false }`
[INFO] [stdout] 7c548269481988c3ae3f26c5ea6c9f67302b5e42a006565b50924e3f316e51b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b0ee825ada01bccb4cc797d64cfa1651126bcf3764a746ee615e77a67d2ef0e
[INFO] running `Command { std: "docker" "start" "-a" "2b0ee825ada01bccb4cc797d64cfa1651126bcf3764a746ee615e77a67d2ef0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling random v0.12.2
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling special v0.8.1
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling term v0.6.1
[INFO] [stderr]    Compiling probability v0.15.12
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling slog-async v2.4.0
[INFO] [stderr]    Compiling chrono v0.4.10
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling rulinalg v0.3.7
[INFO] [stderr]    Compiling slog-term v2.5.0
[INFO] [stderr]    Compiling rusty-machine v0.5.4
[INFO] [stderr]    Compiling blackbox v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/bayesian.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::cmp::max;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bayesian.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         for i in 0..N {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `domains`
[INFO] [stdout]   --> src/bayesian.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     domains: Vec<Variable>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.36s
[INFO] running `Command { std: "docker" "inspect" "2b0ee825ada01bccb4cc797d64cfa1651126bcf3764a746ee615e77a67d2ef0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b0ee825ada01bccb4cc797d64cfa1651126bcf3764a746ee615e77a67d2ef0e", kill_on_drop: false }`
[INFO] [stdout] 2b0ee825ada01bccb4cc797d64cfa1651126bcf3764a746ee615e77a67d2ef0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1faedd798380a520dbcbc6af740e7551cbbb038b0fef5b62b559a4ca6809f847
[INFO] running `Command { std: "docker" "start" "-a" "1faedd798380a520dbcbc6af740e7551cbbb038b0fef5b62b559a4ca6809f847", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/bayesian.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::cmp::max;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bayesian.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         for i in 0..N {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `domains`
[INFO] [stdout]   --> src/bayesian.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     domains: Vec<Variable>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling blackbox v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `blackbox_derive`
[INFO] [stdout]  --> examples/simple.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate blackbox_derive;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blackbox` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0463]: can't find crate for `blackbox_derive`
[INFO] [stdout]  --> examples/more_complex.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate blackbox_derive;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/bayesian.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::cmp::max;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bayesian.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         for i in 0..N {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `domains`
[INFO] [stdout]   --> src/bayesian.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     domains: Vec<Variable>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1faedd798380a520dbcbc6af740e7551cbbb038b0fef5b62b559a4ca6809f847", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1faedd798380a520dbcbc6af740e7551cbbb038b0fef5b62b559a4ca6809f847", kill_on_drop: false }`
[INFO] [stdout] 1faedd798380a520dbcbc6af740e7551cbbb038b0fef5b62b559a4ca6809f847