[INFO] fetching crate braille 1.0.3...
[INFO] building braille-1.0.3 against master#9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19 for pr-117684
[INFO] extracting crate braille 1.0.3 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate braille 1.0.3 on toolchain 9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate braille 1.0.3
[INFO] finished tweaking crates.io crate braille 1.0.3
[INFO] tweaked toml for crates.io crate braille 1.0.3 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate braille 1.0.3 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" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b666667228ba5b20b92e08c2022a22b5239d5fe7f6fbee279ab17ec7c05058d
[INFO] running `Command { std: "docker" "start" "-a" "6b666667228ba5b20b92e08c2022a22b5239d5fe7f6fbee279ab17ec7c05058d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b666667228ba5b20b92e08c2022a22b5239d5fe7f6fbee279ab17ec7c05058d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b666667228ba5b20b92e08c2022a22b5239d5fe7f6fbee279ab17ec7c05058d", kill_on_drop: false }`
[INFO] [stdout] 6b666667228ba5b20b92e08c2022a22b5239d5fe7f6fbee279ab17ec7c05058d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b2e80181f03525f2a1efc05cb4b25e0c6401dcb1dd35d2fbce41675f3f61b24
[INFO] running `Command { std: "docker" "start" "-a" "4b2e80181f03525f2a1efc05cb4b25e0c6401dcb1dd35d2fbce41675f3f61b24", kill_on_drop: false }`
[INFO] [stderr]    Compiling braille v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] running `Command { std: "docker" "inspect" "4b2e80181f03525f2a1efc05cb4b25e0c6401dcb1dd35d2fbce41675f3f61b24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b2e80181f03525f2a1efc05cb4b25e0c6401dcb1dd35d2fbce41675f3f61b24", kill_on_drop: false }`
[INFO] [stdout] 4b2e80181f03525f2a1efc05cb4b25e0c6401dcb1dd35d2fbce41675f3f61b24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c534dae8e5c6651eb79ac5d645594c83bd82767f414e571decc5eeba0fe35f16
[INFO] running `Command { std: "docker" "start" "-a" "c534dae8e5c6651eb79ac5d645594c83bd82767f414e571decc5eeba0fe35f16", kill_on_drop: false }`
[INFO] [stderr]    Compiling braille v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "c534dae8e5c6651eb79ac5d645594c83bd82767f414e571decc5eeba0fe35f16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c534dae8e5c6651eb79ac5d645594c83bd82767f414e571decc5eeba0fe35f16", kill_on_drop: false }`
[INFO] [stdout] c534dae8e5c6651eb79ac5d645594c83bd82767f414e571decc5eeba0fe35f16
[ERROR] this task or one of its parent failed!
[ERROR] error sending request for url (https://crater.rust-lang.org/agent-api/record-progress): connection closed before message completed
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.