[INFO] fetching crate fulcrum 0.0.0...
[INFO] testing fulcrum-0.0.0 against master#61469b682c2b0bf9cebc4622f1859e2bb3b7ebca for pr-91743
[INFO] extracting crate fulcrum 0.0.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate fulcrum 0.0.0 on toolchain 61469b682c2b0bf9cebc4622f1859e2bb3b7ebca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fulcrum 0.0.0
[INFO] finished tweaking crates.io crate fulcrum 0.0.0
[INFO] tweaked toml for crates.io crate fulcrum 0.0.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "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" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 353743e5d057674c3dfcfbf291c83e2c51df05abf336b552fee478ff69221f28
[INFO] running `Command { std: "docker" "start" "-a" "353743e5d057674c3dfcfbf291c83e2c51df05abf336b552fee478ff69221f28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "353743e5d057674c3dfcfbf291c83e2c51df05abf336b552fee478ff69221f28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "353743e5d057674c3dfcfbf291c83e2c51df05abf336b552fee478ff69221f28", kill_on_drop: false }`
[INFO] [stdout] 353743e5d057674c3dfcfbf291c83e2c51df05abf336b552fee478ff69221f28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6923c91b62c6cedac07b1a3f1e0cf9ba334d7874828248e5f4d94e1b15cd5737
[INFO] running `Command { std: "docker" "start" "-a" "6923c91b62c6cedac07b1a3f1e0cf9ba334d7874828248e5f4d94e1b15cd5737", kill_on_drop: false }`
[INFO] [stderr]    Compiling fulcrum v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "6923c91b62c6cedac07b1a3f1e0cf9ba334d7874828248e5f4d94e1b15cd5737", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6923c91b62c6cedac07b1a3f1e0cf9ba334d7874828248e5f4d94e1b15cd5737", kill_on_drop: false }`
[INFO] [stdout] 6923c91b62c6cedac07b1a3f1e0cf9ba334d7874828248e5f4d94e1b15cd5737
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6b8609436b92fa1a1d7c9bcfdf4c691c54fff36ddad7a98951142d68a45ddc2
[INFO] running `Command { std: "docker" "start" "-a" "d6b8609436b92fa1a1d7c9bcfdf4c691c54fff36ddad7a98951142d68a45ddc2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling fulcrum v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 43.54s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/fulcrum-fd40c20975a65c45)
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "d6b8609436b92fa1a1d7c9bcfdf4c691c54fff36ddad7a98951142d68a45ddc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6b8609436b92fa1a1d7c9bcfdf4c691c54fff36ddad7a98951142d68a45ddc2", kill_on_drop: false }`
[INFO] [stdout] d6b8609436b92fa1a1d7c9bcfdf4c691c54fff36ddad7a98951142d68a45ddc2