[INFO] fetching crate gabble 0.1.1...
[INFO] testing gabble-0.1.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate gabble 0.1.1 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate gabble 0.1.1 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 gabble 0.1.1
[INFO] finished tweaking crates.io crate gabble 0.1.1
[INFO] tweaked toml for crates.io crate gabble 0.1.1 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 3f80c3534d994f9ae305061e083cd015a714a4122c0eba9a305c88101f7600a6
[INFO] running `Command { std: "docker" "start" "-a" "3f80c3534d994f9ae305061e083cd015a714a4122c0eba9a305c88101f7600a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f80c3534d994f9ae305061e083cd015a714a4122c0eba9a305c88101f7600a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f80c3534d994f9ae305061e083cd015a714a4122c0eba9a305c88101f7600a6", kill_on_drop: false }`
[INFO] [stdout] 3f80c3534d994f9ae305061e083cd015a714a4122c0eba9a305c88101f7600a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 83b720c26c3988dfcebe8227bd2fdcd7a54356490d27d3128c4188ed154ddfd4
[INFO] running `Command { std: "docker" "start" "-a" "83b720c26c3988dfcebe8227bd2fdcd7a54356490d27d3128c4188ed154ddfd4", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling gabble v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.82s
[INFO] running `Command { std: "docker" "inspect" "83b720c26c3988dfcebe8227bd2fdcd7a54356490d27d3128c4188ed154ddfd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83b720c26c3988dfcebe8227bd2fdcd7a54356490d27d3128c4188ed154ddfd4", kill_on_drop: false }`
[INFO] [stdout] 83b720c26c3988dfcebe8227bd2fdcd7a54356490d27d3128c4188ed154ddfd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 4a7b38289756a2377c90171d52b8c74246747211d3d62c2d58851bd4505ef815
[INFO] running `Command { std: "docker" "start" "-a" "4a7b38289756a2377c90171d52b8c74246747211d3d62c2d58851bd4505ef815", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling gabble v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "4a7b38289756a2377c90171d52b8c74246747211d3d62c2d58851bd4505ef815", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a7b38289756a2377c90171d52b8c74246747211d3d62c2d58851bd4505ef815", kill_on_drop: false }`
[INFO] [stdout] 4a7b38289756a2377c90171d52b8c74246747211d3d62c2d58851bd4505ef815
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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", kill_on_drop: false }`
[INFO] [stdout] 78d9481855f37c6245f44bd04fa3ffcff0d829203f2cac98824891051c3bca31
[INFO] running `Command { std: "docker" "start" "-a" "78d9481855f37c6245f44bd04fa3ffcff0d829203f2cac98824891051c3bca31", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gabble-2fbef56f31bb8135)
[INFO] [stdout] running 4 tests
[INFO] [stderr]    Doc-tests gabble
[INFO] [stdout] test generator::tests::fn_gabble ... ok
[INFO] [stdout] test default::tests::default ... ok
[INFO] [stdout] test gabble::tests::gabble ... ok
[INFO] [stdout] test length::tests::gablength ... 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 3 tests
[INFO] [stdout] test src/lib.rs - (line 26) ... FAILED
[INFO] [stdout] test src/gabble.rs - gabble::Gabble (line 5) ... ok
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 26) stdout ----
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:36:61
[INFO] [stdout]    |
[INFO] [stdout] 13 | println!("customized answer to life is {}", gabble.generate(rng));
[INFO] [stdout]    |                                                             ^^^
[INFO] [stdout]    |                                                             |
[INFO] [stdout]    |                                                             expected `&mut _`, found struct `ThreadRng`
[INFO] [stdout]    |                                                             help: consider mutably borrowing here: `&mut rng`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected mutable reference `&mut _`
[INFO] [stdout]                          found struct `ThreadRng`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 26)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.06s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "78d9481855f37c6245f44bd04fa3ffcff0d829203f2cac98824891051c3bca31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78d9481855f37c6245f44bd04fa3ffcff0d829203f2cac98824891051c3bca31", kill_on_drop: false }`
[INFO] [stdout] 78d9481855f37c6245f44bd04fa3ffcff0d829203f2cac98824891051c3bca31