[INFO] fetching crate bach 0.0.2...
[INFO] testing bach-0.0.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate bach 0.0.2 into /workspace/builds/worker-68/source
[INFO] validating manifest of crates.io crate bach 0.0.2 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 bach 0.0.2
[INFO] finished tweaking crates.io crate bach 0.0.2
[INFO] tweaked toml for crates.io crate bach 0.0.2 written to /workspace/builds/worker-68/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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bolero v0.6.0
[INFO] [stderr]   Downloaded arr_macro_impl v0.1.3
[INFO] [stderr]   Downloaded arr_macro v0.1.3
[INFO] [stderr]   Downloaded nanorand v0.4.4
[INFO] [stderr]   Downloaded bolero-libfuzzer v0.6.0
[INFO] [stderr]   Downloaded bolero-generator v0.6.0
[INFO] [stderr]   Downloaded bolero-engine v0.6.0
[INFO] [stderr]   Downloaded bolero-afl v0.6.0
[INFO] [stderr]   Downloaded bolero-honggfuzz v0.6.0
[INFO] [stderr]   Downloaded bolero-generator-derive v0.6.1
[INFO] [stderr]   Downloaded idmap v0.2.21
[INFO] [stderr]   Downloaded intrusive-collections v0.9.2
[INFO] [stderr]   Downloaded libtest-mimic v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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] bd4130ea824389c32c9f2f55aa9ee167dd634be1504877dc42e42b26fe2a0f97
[INFO] running `Command { std: "docker" "start" "-a" "bd4130ea824389c32c9f2f55aa9ee167dd634be1504877dc42e42b26fe2a0f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd4130ea824389c32c9f2f55aa9ee167dd634be1504877dc42e42b26fe2a0f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd4130ea824389c32c9f2f55aa9ee167dd634be1504877dc42e42b26fe2a0f97", kill_on_drop: false }`
[INFO] [stdout] bd4130ea824389c32c9f2f55aa9ee167dd634be1504877dc42e42b26fe2a0f97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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] 06c3b7b7bdd2c1904b9f3f21ba50b5feb16329498c36db92a96429bd83591824
[INFO] running `Command { std: "docker" "start" "-a" "06c3b7b7bdd2c1904b9f3f21ba50b5feb16329498c36db92a96429bd83591824", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling futures-sink v0.3.17
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling fixedbitset v0.4.0
[INFO] [stderr]    Compiling async-task v4.0.3
[INFO] [stderr]    Compiling anymap v0.12.1
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling spinning_top v0.2.4
[INFO] [stderr]    Compiling idmap v0.2.21
[INFO] [stderr]    Compiling intrusive-collections v0.9.2
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling nanorand v0.4.4
[INFO] [stderr]    Compiling flume v0.9.2
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling arr_macro_impl v0.1.3
[INFO] [stderr]    Compiling arr_macro v0.1.3
[INFO] [stderr]    Compiling bach v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.69s
[INFO] running `Command { std: "docker" "inspect" "06c3b7b7bdd2c1904b9f3f21ba50b5feb16329498c36db92a96429bd83591824", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06c3b7b7bdd2c1904b9f3f21ba50b5feb16329498c36db92a96429bd83591824", kill_on_drop: false }`
[INFO] [stdout] 06c3b7b7bdd2c1904b9f3f21ba50b5feb16329498c36db92a96429bd83591824
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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] 8cc1402bc174936abfb7661b758e343a0f2b57cb78448f646afb583b02d65494
[INFO] running `Command { std: "docker" "start" "-a" "8cc1402bc174936abfb7661b758e343a0f2b57cb78448f646afb583b02d65494", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling pretty-hex v0.1.1
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling bolero-generator-derive v0.6.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling object v0.26.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling bolero-generator v0.6.0
[INFO] [stderr]    Compiling structopt v0.3.23
[INFO] [stderr]    Compiling libtest-mimic v0.2.0
[INFO] [stderr]    Compiling bolero-engine v0.6.0
[INFO] [stderr]    Compiling bolero v0.6.0
[INFO] [stderr]    Compiling bach v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `block` found for struct `executor::Executor` in the current scope
[INFO] [stdout]    --> src/graph.rs:868:18
[INFO] [stdout]     |
[INFO] [stdout] 868 |         executor.block();
[INFO] [stdout]     |                  ^^^^^ method not found in `executor::Executor<Env>`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/executor.rs:43:1
[INFO] [stdout]     |
[INFO] [stdout] 43  | pub struct Executor<Environment> {
[INFO] [stdout]     | -------------------------------- method `block` not found for this
[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 E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bach` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "8cc1402bc174936abfb7661b758e343a0f2b57cb78448f646afb583b02d65494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cc1402bc174936abfb7661b758e343a0f2b57cb78448f646afb583b02d65494", kill_on_drop: false }`
[INFO] [stdout] 8cc1402bc174936abfb7661b758e343a0f2b57cb78448f646afb583b02d65494