[INFO] fetching crate tojson 0.3.2...
[INFO] testing tojson-0.3.2 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate tojson 0.3.2 into /workspace/builds/worker-40/source
[INFO] validating manifest of crates.io crate tojson 0.3.2 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tojson 0.3.2
[INFO] finished tweaking crates.io crate tojson 0.3.2
[INFO] tweaked toml for crates.io crate tojson 0.3.2 written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] crate crates.io crate tojson 0.3.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v1.0.27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35ffd25e43facbe76b311b54052dc8465813aadde96f87ba8dc8c005f9adad6d
[INFO] running `Command { std: "docker" "start" "-a" "35ffd25e43facbe76b311b54052dc8465813aadde96f87ba8dc8c005f9adad6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35ffd25e43facbe76b311b54052dc8465813aadde96f87ba8dc8c005f9adad6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35ffd25e43facbe76b311b54052dc8465813aadde96f87ba8dc8c005f9adad6d", kill_on_drop: false }`
[INFO] [stdout] 35ffd25e43facbe76b311b54052dc8465813aadde96f87ba8dc8c005f9adad6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1cd601c033a177dccea99953484e7b79ac9ab7e91c2c130bc4984f497e897470
[INFO] running `Command { std: "docker" "start" "-a" "1cd601c033a177dccea99953484e7b79ac9ab7e91c2c130bc4984f497e897470", kill_on_drop: false }`
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "1cd601c033a177dccea99953484e7b79ac9ab7e91c2c130bc4984f497e897470", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cd601c033a177dccea99953484e7b79ac9ab7e91c2c130bc4984f497e897470", kill_on_drop: false }`
[INFO] [stdout] 1cd601c033a177dccea99953484e7b79ac9ab7e91c2c130bc4984f497e897470