[INFO] fetching crate bolero 0.6.0...
[INFO] testing bolero-0.6.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate bolero 0.6.0 into /workspace/builds/worker-84/source
[INFO] validating manifest of crates.io crate bolero 0.6.0 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 bolero 0.6.0
[INFO] finished tweaking crates.io crate bolero 0.6.0
[INFO] tweaked toml for crates.io crate bolero 0.6.0 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] 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] 0758ca6cf3c2449b9c8e0623ab80c6277e846aab7c2c68ced11227167bc0ba80
[INFO] running `Command { std: "docker" "start" "-a" "0758ca6cf3c2449b9c8e0623ab80c6277e846aab7c2c68ced11227167bc0ba80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0758ca6cf3c2449b9c8e0623ab80c6277e846aab7c2c68ced11227167bc0ba80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0758ca6cf3c2449b9c8e0623ab80c6277e846aab7c2c68ced11227167bc0ba80", kill_on_drop: false }`
[INFO] [stdout] 0758ca6cf3c2449b9c8e0623ab80c6277e846aab7c2c68ced11227167bc0ba80
[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] d44f32cb5c217ffb2330d3acd1e6d7cfd22ff0baa603f136ed0da0b7e40bd36a
[INFO] running `Command { std: "docker" "start" "-a" "d44f32cb5c217ffb2330d3acd1e6d7cfd22ff0baa603f136ed0da0b7e40bd36a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling version_check v0.9.3
[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 adler v1.0.2
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling pretty-hex v0.1.1
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling object v0.26.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling addr2line v0.16.0
[INFO] [stderr]    Compiling bolero-generator-derive v0.6.1
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[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 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.17s
[INFO] running `Command { std: "docker" "inspect" "d44f32cb5c217ffb2330d3acd1e6d7cfd22ff0baa603f136ed0da0b7e40bd36a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d44f32cb5c217ffb2330d3acd1e6d7cfd22ff0baa603f136ed0da0b7e40bd36a", kill_on_drop: false }`
[INFO] [stdout] d44f32cb5c217ffb2330d3acd1e6d7cfd22ff0baa603f136ed0da0b7e40bd36a
[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] c23857ba5e36a929164678fc38aa67c09a4eceb83268280b821604c141357310
[INFO] running `Command { std: "docker" "start" "-a" "c23857ba5e36a929164678fc38aa67c09a4eceb83268280b821604c141357310", kill_on_drop: false }`
[INFO] [stderr]    Compiling bolero v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 18.28s
[INFO] running `Command { std: "docker" "inspect" "c23857ba5e36a929164678fc38aa67c09a4eceb83268280b821604c141357310", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c23857ba5e36a929164678fc38aa67c09a4eceb83268280b821604c141357310", kill_on_drop: false }`
[INFO] [stdout] c23857ba5e36a929164678fc38aa67c09a4eceb83268280b821604c141357310
[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] 5bfe4085e2b19daa3ad3c4228e4dff33f168a4192dd62d0e706fea11d2d32f7f
[INFO] running `Command { std: "docker" "start" "-a" "5bfe4085e2b19daa3ad3c4228e4dff33f168a4192dd62d0e706fea11d2d32f7f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bolero-4128f17fb3aabd8b)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test type_generator_cloned_test - should panic ... ok
[INFO] [stdout] test slice_generator_test - should panic ... ok
[INFO] [stdout] test type_generator_test - should panic ... ok
[INFO] [stdout] test tests::nested_test ... ok
[INFO] [stdout] test range_generator_cloned_test ... ok
[INFO] [stdout] test range_generator_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.79s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bolero
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - check (line 85) ... ok
[INFO] [stdout] test src/lib.rs - check (line 47) ... ok
[INFO] [stdout] test src/lib.rs - check (line 105) ... ok
[INFO] [stdout] test src/lib.rs - check (line 64) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.30s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5bfe4085e2b19daa3ad3c4228e4dff33f168a4192dd62d0e706fea11d2d32f7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bfe4085e2b19daa3ad3c4228e4dff33f168a4192dd62d0e706fea11d2d32f7f", kill_on_drop: false }`
[INFO] [stdout] 5bfe4085e2b19daa3ad3c4228e4dff33f168a4192dd62d0e706fea11d2d32f7f