[INFO] fetching crate symbolic 8.3.0...
[INFO] testing symbolic-8.3.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate symbolic 8.3.0 into /workspace/builds/worker-56/source
[INFO] validating manifest of crates.io crate symbolic 8.3.0 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 symbolic 8.3.0
[INFO] finished tweaking crates.io crate symbolic 8.3.0
[INFO] tweaked toml for crates.io crate symbolic 8.3.0 written to /workspace/builds/worker-56/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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 26180cb497f00b24b41ef6184e41ce00f26ca72b4dc1af830d506bb77292ba90
[INFO] running `Command { std: "docker" "start" "-a" "26180cb497f00b24b41ef6184e41ce00f26ca72b4dc1af830d506bb77292ba90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26180cb497f00b24b41ef6184e41ce00f26ca72b4dc1af830d506bb77292ba90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26180cb497f00b24b41ef6184e41ce00f26ca72b4dc1af830d506bb77292ba90", kill_on_drop: false }`
[INFO] [stdout] 26180cb497f00b24b41ef6184e41ce00f26ca72b4dc1af830d506bb77292ba90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] fd418b051c29dfe9717d6508c8840ae3af6028010507c10e9148eb695143fadb
[INFO] running `Command { std: "docker" "start" "-a" "fd418b051c29dfe9717d6508c8840ae3af6028010507c10e9148eb695143fadb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling arrayvec v0.7.1
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling wasmparser v0.77.0
[INFO] [stderr]    Compiling joinery v2.1.0
[INFO] [stderr]    Compiling id-arena v2.2.1
[INFO] [stderr]    Compiling indent_write v2.2.0
[INFO] [stderr]    Compiling leb128 v0.2.4
[INFO] [stderr]    Compiling dmsort v1.0.1
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling debugid v0.7.2
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling brownstone v1.0.1
[INFO] [stderr]    Compiling gimli v0.24.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]    Compiling symbolic-common v8.3.0
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling bitvec v0.19.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling flate2 v1.0.21
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stderr]    Compiling bzip2 v0.4.3
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling walrus-macro v0.19.0
[INFO] [stderr]    Compiling nom-supreme v0.4.6
[INFO] [stderr]    Compiling scroll v0.10.2
[INFO] [stderr]    Compiling goblin v0.4.2
[INFO] [stderr]    Compiling pdb v0.7.0
[INFO] [stderr]    Compiling walrus v0.19.0
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling zip v0.5.13
[INFO] [stderr]    Compiling string_cache v0.8.1
[INFO] [stderr]    Compiling elementtree v0.5.0
[INFO] [stderr]    Compiling symbolic-debuginfo v8.3.0
[INFO] [stderr]    Compiling symbolic v8.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.65s
[INFO] running `Command { std: "docker" "inspect" "fd418b051c29dfe9717d6508c8840ae3af6028010507c10e9148eb695143fadb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd418b051c29dfe9717d6508c8840ae3af6028010507c10e9148eb695143fadb", kill_on_drop: false }`
[INFO] [stdout] fd418b051c29dfe9717d6508c8840ae3af6028010507c10e9148eb695143fadb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 84a6307c27cdc99adb705b541f4f5c19aae7c271e2e0c9afde823242ff3006ec
[INFO] running `Command { std: "docker" "start" "-a" "84a6307c27cdc99adb705b541f4f5c19aae7c271e2e0c9afde823242ff3006ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling symbolic v8.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `Command { std: "docker" "inspect" "84a6307c27cdc99adb705b541f4f5c19aae7c271e2e0c9afde823242ff3006ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84a6307c27cdc99adb705b541f4f5c19aae7c271e2e0c9afde823242ff3006ec", kill_on_drop: false }`
[INFO] [stdout] 84a6307c27cdc99adb705b541f4f5c19aae7c271e2e0c9afde823242ff3006ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 2e2d4a79595e23a1fd266325d5469cb4c37334504a587c66604b9513f641657d
[INFO] running `Command { std: "docker" "start" "-a" "2e2d4a79595e23a1fd266325d5469cb4c37334504a587c66604b9513f641657d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/symbolic-0b327f028affae90)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests symbolic
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2e2d4a79595e23a1fd266325d5469cb4c37334504a587c66604b9513f641657d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e2d4a79595e23a1fd266325d5469cb4c37334504a587c66604b9513f641657d", kill_on_drop: false }`
[INFO] [stdout] 2e2d4a79595e23a1fd266325d5469cb4c37334504a587c66604b9513f641657d