[INFO] fetching crate symtool-backend 0.3.0...
[INFO] testing symtool-backend-0.3.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate symtool-backend 0.3.0 into /workspace/builds/worker-68/source
[INFO] validating manifest of crates.io crate symtool-backend 0.3.0 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 symtool-backend 0.3.0
[INFO] finished tweaking crates.io crate symtool-backend 0.3.0
[INFO] tweaked toml for crates.io crate symtool-backend 0.3.0 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]     Blocking waiting for file lock on package cache
[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] d536a61f78e6897cf61f613a7c3ab88ac428f6342b4413f7b3109884b5a59422
[INFO] running `Command { std: "docker" "start" "-a" "d536a61f78e6897cf61f613a7c3ab88ac428f6342b4413f7b3109884b5a59422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d536a61f78e6897cf61f613a7c3ab88ac428f6342b4413f7b3109884b5a59422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d536a61f78e6897cf61f613a7c3ab88ac428f6342b4413f7b3109884b5a59422", kill_on_drop: false }`
[INFO] [stdout] d536a61f78e6897cf61f613a7c3ab88ac428f6342b4413f7b3109884b5a59422
[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] 35c938840af3286668402f6a8690d9ea8f3c1d4bf685d4c8360e16399230d4a3
[INFO] running `Command { std: "docker" "start" "-a" "35c938840af3286668402f6a8690d9ea8f3c1d4bf685d4c8360e16399230d4a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]    Compiling scroll v0.10.2
[INFO] [stderr]    Compiling goblin v0.4.2
[INFO] [stderr]    Compiling symtool-backend v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.22s
[INFO] running `Command { std: "docker" "inspect" "35c938840af3286668402f6a8690d9ea8f3c1d4bf685d4c8360e16399230d4a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35c938840af3286668402f6a8690d9ea8f3c1d4bf685d4c8360e16399230d4a3", kill_on_drop: false }`
[INFO] [stdout] 35c938840af3286668402f6a8690d9ea8f3c1d4bf685d4c8360e16399230d4a3
[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] 86e1dcec2d8b50d2904e0b6260820fc7d3f092a151a8105f728a29ef9a938014
[INFO] running `Command { std: "docker" "start" "-a" "86e1dcec2d8b50d2904e0b6260820fc7d3f092a151a8105f728a29ef9a938014", kill_on_drop: false }`
[INFO] [stderr]    Compiling symtool-backend v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "86e1dcec2d8b50d2904e0b6260820fc7d3f092a151a8105f728a29ef9a938014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86e1dcec2d8b50d2904e0b6260820fc7d3f092a151a8105f728a29ef9a938014", kill_on_drop: false }`
[INFO] [stdout] 86e1dcec2d8b50d2904e0b6260820fc7d3f092a151a8105f728a29ef9a938014
[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", kill_on_drop: false }`
[INFO] [stdout] 6e5770d5a9b2ba81b6a77e1a1da5f75aa9d7c85e259c439f38bbdd0628119e98
[INFO] running `Command { std: "docker" "start" "-a" "6e5770d5a9b2ba81b6a77e1a1da5f75aa9d7c85e259c439f38bbdd0628119e98", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/symtool_backend-b1bd4d025a670c4e)
[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] [stderr]    Doc-tests symtool-backend
[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" "6e5770d5a9b2ba81b6a77e1a1da5f75aa9d7c85e259c439f38bbdd0628119e98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e5770d5a9b2ba81b6a77e1a1da5f75aa9d7c85e259c439f38bbdd0628119e98", kill_on_drop: false }`
[INFO] [stdout] 6e5770d5a9b2ba81b6a77e1a1da5f75aa9d7c85e259c439f38bbdd0628119e98