[INFO] fetching crate mhdb 1.0.3...
[INFO] testing mhdb-1.0.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mhdb 1.0.3 into /workspace/builds/worker-62/source
[INFO] validating manifest of crates.io crate mhdb 1.0.3 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 mhdb 1.0.3
[INFO] finished tweaking crates.io crate mhdb 1.0.3
[INFO] tweaked toml for crates.io crate mhdb 1.0.3 written to /workspace/builds/worker-62/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-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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] 8638ad59f306c4f1ea40423db64d2cf95f8e1c8d789395288ed76b2ddefaf39d
[INFO] running `Command { std: "docker" "start" "-a" "8638ad59f306c4f1ea40423db64d2cf95f8e1c8d789395288ed76b2ddefaf39d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8638ad59f306c4f1ea40423db64d2cf95f8e1c8d789395288ed76b2ddefaf39d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8638ad59f306c4f1ea40423db64d2cf95f8e1c8d789395288ed76b2ddefaf39d", kill_on_drop: false }`
[INFO] [stdout] 8638ad59f306c4f1ea40423db64d2cf95f8e1c8d789395288ed76b2ddefaf39d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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] c6c3d2fdd3a3943d96335b274f203f5c519113b7b5e68cf81fdcaff251159495
[INFO] running `Command { std: "docker" "start" "-a" "c6c3d2fdd3a3943d96335b274f203f5c519113b7b5e68cf81fdcaff251159495", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling mhdb v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.96s
[INFO] running `Command { std: "docker" "inspect" "c6c3d2fdd3a3943d96335b274f203f5c519113b7b5e68cf81fdcaff251159495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6c3d2fdd3a3943d96335b274f203f5c519113b7b5e68cf81fdcaff251159495", kill_on_drop: false }`
[INFO] [stdout] c6c3d2fdd3a3943d96335b274f203f5c519113b7b5e68cf81fdcaff251159495
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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] 75cdd7d588ab7125f790d001375a1b89620c783305e8d7ddc5aec13cc65edea8
[INFO] running `Command { std: "docker" "start" "-a" "75cdd7d588ab7125f790d001375a1b89620c783305e8d7ddc5aec13cc65edea8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mhdb v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "75cdd7d588ab7125f790d001375a1b89620c783305e8d7ddc5aec13cc65edea8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75cdd7d588ab7125f790d001375a1b89620c783305e8d7ddc5aec13cc65edea8", kill_on_drop: false }`
[INFO] [stdout] 75cdd7d588ab7125f790d001375a1b89620c783305e8d7ddc5aec13cc65edea8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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] e5aa66d52f6cd14cb184c53981b9482c70b50f09a94f6df9de31d77571d9d15e
[INFO] running `Command { std: "docker" "start" "-a" "e5aa66d52f6cd14cb184c53981b9482c70b50f09a94f6df9de31d77571d9d15e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.66s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mhdb-f77f28a7a409111d)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::buffer_manipulation ... ok
[INFO] [stdout] test tests::chkblk ... ok
[INFO] [stdout] test tests::calchash ... ok
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/mhdb-f77f28a7a409111d` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "e5aa66d52f6cd14cb184c53981b9482c70b50f09a94f6df9de31d77571d9d15e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5aa66d52f6cd14cb184c53981b9482c70b50f09a94f6df9de31d77571d9d15e", kill_on_drop: false }`
[INFO] [stdout] e5aa66d52f6cd14cb184c53981b9482c70b50f09a94f6df9de31d77571d9d15e