[INFO] cloning repository https://github.com/matklad/drop_bomb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matklad/drop_bomb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fdrop_bomb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fdrop_bomb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e42d4bb9f0ad1a628cc005157c7b6da369bb5fc
[INFO] checking matklad/drop_bomb against master#9c8a2694fadf3900c4d7880f6357cee60e9aa39b for pr-117589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fdrop_bomb" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/drop_bomb on toolchain 9c8a2694fadf3900c4d7880f6357cee60e9aa39b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c8a2694fadf3900c4d7880f6357cee60e9aa39b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matklad/drop_bomb
[INFO] finished tweaking git repo https://github.com/matklad/drop_bomb
[INFO] tweaked toml for git repo https://github.com/matklad/drop_bomb written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/drop_bomb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c8a2694fadf3900c4d7880f6357cee60e9aa39b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking matklad/drop_bomb against try#1e981f329e2ae73beb121ad9b30e8013bc4ead78 for pr-117589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fdrop_bomb" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/drop_bomb on toolchain 1e981f329e2ae73beb121ad9b30e8013bc4ead78
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1e981f329e2ae73beb121ad9b30e8013bc4ead78" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matklad/drop_bomb
[INFO] finished tweaking git repo https://github.com/matklad/drop_bomb
[INFO] tweaked toml for git repo https://github.com/matklad/drop_bomb written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/drop_bomb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1e981f329e2ae73beb121ad9b30e8013bc4ead78" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking matklad/drop_bomb against try#1e981f329e2ae73beb121ad9b30e8013bc4ead78 for pr-117589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fdrop_bomb" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/drop_bomb on toolchain 1e981f329e2ae73beb121ad9b30e8013bc4ead78
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1e981f329e2ae73beb121ad9b30e8013bc4ead78" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matklad/drop_bomb
[INFO] finished tweaking git repo https://github.com/matklad/drop_bomb
[INFO] tweaked toml for git repo https://github.com/matklad/drop_bomb written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/drop_bomb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1e981f329e2ae73beb121ad9b30e8013bc4ead78" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+1e981f329e2ae73beb121ad9b30e8013bc4ead78" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8cc00d5c03aaad298bd0cc651405de5f197f1985ccd0185a918f8cd50c6c85e
[INFO] running `Command { std: "docker" "start" "-a" "e8cc00d5c03aaad298bd0cc651405de5f197f1985ccd0185a918f8cd50c6c85e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8cc00d5c03aaad298bd0cc651405de5f197f1985ccd0185a918f8cd50c6c85e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8cc00d5c03aaad298bd0cc651405de5f197f1985ccd0185a918f8cd50c6c85e", kill_on_drop: false }`
[INFO] [stdout] e8cc00d5c03aaad298bd0cc651405de5f197f1985ccd0185a918f8cd50c6c85e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+1e981f329e2ae73beb121ad9b30e8013bc4ead78" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1a2136dc76ead70e2de6ef16c8061d12d51f4fd00721496af2407a7eceab7b5
[INFO] running `Command { std: "docker" "start" "-a" "c1a2136dc76ead70e2de6ef16c8061d12d51f4fd00721496af2407a7eceab7b5", kill_on_drop: false }`
[INFO] [stderr]     Checking drop_bomb v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "c1a2136dc76ead70e2de6ef16c8061d12d51f4fd00721496af2407a7eceab7b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1a2136dc76ead70e2de6ef16c8061d12d51f4fd00721496af2407a7eceab7b5", kill_on_drop: false }`
[INFO] [stdout] c1a2136dc76ead70e2de6ef16c8061d12d51f4fd00721496af2407a7eceab7b5