[INFO] fetching crate web_random 0.1.5...
[INFO] testing web_random-0.1.5 against 1.55.0 for beta-1.56-1
[INFO] extracting crate web_random 0.1.5 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate web_random 0.1.5 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 web_random 0.1.5
[INFO] finished tweaking crates.io crate web_random 0.1.5
[INFO] tweaked toml for crates.io crate web_random 0.1.5 written to /workspace/builds/worker-12/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 4909eec89a50310d9cd6d4e39cc27afd3edbb57cbd6c06976f89d340280485a7
[INFO] running `Command { std: "docker" "start" "-a" "4909eec89a50310d9cd6d4e39cc27afd3edbb57cbd6c06976f89d340280485a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4909eec89a50310d9cd6d4e39cc27afd3edbb57cbd6c06976f89d340280485a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4909eec89a50310d9cd6d4e39cc27afd3edbb57cbd6c06976f89d340280485a7", kill_on_drop: false }`
[INFO] [stdout] 4909eec89a50310d9cd6d4e39cc27afd3edbb57cbd6c06976f89d340280485a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 7e57ced5faf58393922021e253f8956e3d9df1e0305a94f447bc1d1c51aebcd1
[INFO] running `Command { std: "docker" "start" "-a" "7e57ced5faf58393922021e253f8956e3d9df1e0305a94f447bc1d1c51aebcd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling cty v0.2.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling cstring v0.0.5
[INFO] [stderr]    Compiling callback v0.5.3
[INFO] [stderr]    Compiling js v0.3.0
[INFO] [stderr]    Compiling web_random v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `Command { std: "docker" "inspect" "7e57ced5faf58393922021e253f8956e3d9df1e0305a94f447bc1d1c51aebcd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e57ced5faf58393922021e253f8956e3d9df1e0305a94f447bc1d1c51aebcd1", kill_on_drop: false }`
[INFO] [stdout] 7e57ced5faf58393922021e253f8956e3d9df1e0305a94f447bc1d1c51aebcd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 72d61e6042950d04779e8516ec338a80b6de2f8f0d3799872758a15904c29f5e
[INFO] running `Command { std: "docker" "start" "-a" "72d61e6042950d04779e8516ec338a80b6de2f8f0d3799872758a15904c29f5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling web_random v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "72d61e6042950d04779e8516ec338a80b6de2f8f0d3799872758a15904c29f5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72d61e6042950d04779e8516ec338a80b6de2f8f0d3799872758a15904c29f5e", kill_on_drop: false }`
[INFO] [stdout] 72d61e6042950d04779e8516ec338a80b6de2f8f0d3799872758a15904c29f5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 5fa635a1f14761e15dc1f47826083f2561e202be30bc9911b58b91640edc7f3e
[INFO] running `Command { std: "docker" "start" "-a" "5fa635a1f14761e15dc1f47826083f2561e202be30bc9911b58b91640edc7f3e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/web_random-3a2ccb85eb84d59f)
[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/web_random-3a2ccb85eb84d59f` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "5fa635a1f14761e15dc1f47826083f2561e202be30bc9911b58b91640edc7f3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fa635a1f14761e15dc1f47826083f2561e202be30bc9911b58b91640edc7f3e", kill_on_drop: false }`
[INFO] [stdout] 5fa635a1f14761e15dc1f47826083f2561e202be30bc9911b58b91640edc7f3e