[INFO] fetching crate sscanf_macro 0.4.1...
[INFO] checking sscanf_macro-0.4.1 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] extracting crate sscanf_macro 0.4.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate sscanf_macro 0.4.1 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sscanf_macro 0.4.1
[INFO] finished tweaking crates.io crate sscanf_macro 0.4.1
[INFO] tweaked toml for crates.io crate sscanf_macro 0.4.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 218038f4c9dad6a470d1ead81fc450b4b7ea04a99a81d0509302acd615084fd6
[INFO] running `Command { std: "docker" "start" "-a" "218038f4c9dad6a470d1ead81fc450b4b7ea04a99a81d0509302acd615084fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "218038f4c9dad6a470d1ead81fc450b4b7ea04a99a81d0509302acd615084fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "218038f4c9dad6a470d1ead81fc450b4b7ea04a99a81d0509302acd615084fd6", kill_on_drop: false }`
[INFO] [stdout] 218038f4c9dad6a470d1ead81fc450b4b7ea04a99a81d0509302acd615084fd6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e489f5900ade55282762a27e10263141a1aa8bff826993dd1112b22f93a1a816
[INFO] running `Command { std: "docker" "start" "-a" "e489f5900ade55282762a27e10263141a1aa8bff826993dd1112b22f93a1a816", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking syn v2.0.48
[INFO] [stderr]     Checking convert_case v0.6.0
[INFO] [stderr]     Checking sscanf_macro v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.91s
[INFO] running `Command { std: "docker" "inspect" "e489f5900ade55282762a27e10263141a1aa8bff826993dd1112b22f93a1a816", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e489f5900ade55282762a27e10263141a1aa8bff826993dd1112b22f93a1a816", kill_on_drop: false }`
[INFO] [stdout] e489f5900ade55282762a27e10263141a1aa8bff826993dd1112b22f93a1a816
[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.