[INFO] fetching crate gabble 0.1.1...
[INFO] testing gabble-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate gabble 0.1.1 into /workspace/builds/worker-84/source
[INFO] validating manifest of crates.io crate gabble 0.1.1 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 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-84/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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] c616eebe9931c6f90309524f1d76420ffef5014da264928b34e2c641bddb0799
[INFO] running `Command { std: "docker" "start" "-a" "c616eebe9931c6f90309524f1d76420ffef5014da264928b34e2c641bddb0799", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c616eebe9931c6f90309524f1d76420ffef5014da264928b34e2c641bddb0799", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c616eebe9931c6f90309524f1d76420ffef5014da264928b34e2c641bddb0799", kill_on_drop: false }`
[INFO] [stdout] c616eebe9931c6f90309524f1d76420ffef5014da264928b34e2c641bddb0799
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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] c269809c018e56d5443b18818b6117accb9bd828fb59824a2216127c6ac1d92d
[INFO] running `Command { std: "docker" "start" "-a" "c269809c018e56d5443b18818b6117accb9bd828fb59824a2216127c6ac1d92d", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling libc v0.2.101
[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 7.53s
[INFO] running `Command { std: "docker" "inspect" "c269809c018e56d5443b18818b6117accb9bd828fb59824a2216127c6ac1d92d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c269809c018e56d5443b18818b6117accb9bd828fb59824a2216127c6ac1d92d", kill_on_drop: false }`
[INFO] [stdout] c269809c018e56d5443b18818b6117accb9bd828fb59824a2216127c6ac1d92d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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] 4c5024c942678fcf9644ae527d1234ba75a4b7024999dc8bde4194fe6ecdd2ce
[INFO] running `Command { std: "docker" "start" "-a" "4c5024c942678fcf9644ae527d1234ba75a4b7024999dc8bde4194fe6ecdd2ce", 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 1.01s
[INFO] running `Command { std: "docker" "inspect" "4c5024c942678fcf9644ae527d1234ba75a4b7024999dc8bde4194fe6ecdd2ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c5024c942678fcf9644ae527d1234ba75a4b7024999dc8bde4194fe6ecdd2ce", kill_on_drop: false }`
[INFO] [stdout] 4c5024c942678fcf9644ae527d1234ba75a4b7024999dc8bde4194fe6ecdd2ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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] 9335ff4630bba2534ffa4f99593a19e04275fd0607f774f442614e1d223b47c5
[INFO] running `Command { std: "docker" "start" "-a" "9335ff4630bba2534ffa4f99593a19e04275fd0607f774f442614e1d223b47c5", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.72s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gabble-80bb4655b96ae734)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test generator::tests::fn_gabble ... ok
[INFO] [stdout] test length::tests::gablength ... ok
[INFO] [stderr]    Doc-tests gabble
[INFO] [stdout] test default::tests::default ... ok
[INFO] [stdout] test gabble::tests::gabble ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 26) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] test src/gabble.rs - gabble::Gabble (line 5) ... 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 1.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "9335ff4630bba2534ffa4f99593a19e04275fd0607f774f442614e1d223b47c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9335ff4630bba2534ffa4f99593a19e04275fd0607f774f442614e1d223b47c5", kill_on_drop: false }`
[INFO] [stdout] 9335ff4630bba2534ffa4f99593a19e04275fd0607f774f442614e1d223b47c5