[INFO] fetching crate cove 0.3.0...
[INFO] checking cove-0.3.0 against master#a42d94ebb883116f2867cbe3016d9bde9ca6d3f7 for pr-117593
[INFO] extracting crate cove 0.3.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate cove 0.3.0 on toolchain a42d94ebb883116f2867cbe3016d9bde9ca6d3f7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a42d94ebb883116f2867cbe3016d9bde9ca6d3f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cove 0.3.0
[INFO] finished tweaking crates.io crate cove 0.3.0
[INFO] tweaked toml for crates.io crate cove 0.3.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate cove 0.3.0 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" "+a42d94ebb883116f2867cbe3016d9bde9ca6d3f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+a42d94ebb883116f2867cbe3016d9bde9ca6d3f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1119ba3d2cf574a80b99fe43fdebffca0ad026c8ce53a43a98147429295bebf
[INFO] running `Command { std: "docker" "start" "-a" "d1119ba3d2cf574a80b99fe43fdebffca0ad026c8ce53a43a98147429295bebf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1119ba3d2cf574a80b99fe43fdebffca0ad026c8ce53a43a98147429295bebf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1119ba3d2cf574a80b99fe43fdebffca0ad026c8ce53a43a98147429295bebf", kill_on_drop: false }`
[INFO] [stdout] d1119ba3d2cf574a80b99fe43fdebffca0ad026c8ce53a43a98147429295bebf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+a42d94ebb883116f2867cbe3016d9bde9ca6d3f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80867bb62f95e285ce76617556e5d3453bc008a2bb871f7c616252c2364c7f88
[INFO] running `Command { std: "docker" "start" "-a" "80867bb62f95e285ce76617556e5d3453bc008a2bb871f7c616252c2364c7f88", kill_on_drop: false }`
[INFO] [stderr]     Checking cove v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `NonZeroI128`, `NonZeroI16`, `NonZeroI64`, `NonZeroI8`, `NonZeroIsize`, `NonZeroU128`, `NonZeroU32`, `NonZeroU64`, `NonZeroUsize`
[INFO] [stdout]  --> tests/nonzero.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 |     NonZeroU8, NonZeroU16, NonZeroU32, NonZeroU64, NonZeroU128, NonZeroUsize,
[INFO] [stdout]   |                            ^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 5 |     NonZeroI8, NonZeroI16, NonZeroI32, NonZeroI64, NonZeroI128, NonZeroIsize
[INFO] [stdout]   |     ^^^^^^^^^  ^^^^^^^^^^              ^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "80867bb62f95e285ce76617556e5d3453bc008a2bb871f7c616252c2364c7f88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80867bb62f95e285ce76617556e5d3453bc008a2bb871f7c616252c2364c7f88", kill_on_drop: false }`
[INFO] [stdout] 80867bb62f95e285ce76617556e5d3453bc008a2bb871f7c616252c2364c7f88
[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.
[INFO] checking cove-0.3.0 against try#031b389f0c31c0f91c9464d26313ae513dbe8d36 for pr-117593
[INFO] extracting crate cove 0.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate cove 0.3.0 on toolchain 031b389f0c31c0f91c9464d26313ae513dbe8d36
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cove 0.3.0
[INFO] finished tweaking crates.io crate cove 0.3.0
[INFO] tweaked toml for crates.io crate cove 0.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate cove 0.3.0 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" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af62646250c3a1f63f6ea3a522ef98600221e99c084e62121eac547b7a84c15f
[INFO] running `Command { std: "docker" "start" "-a" "af62646250c3a1f63f6ea3a522ef98600221e99c084e62121eac547b7a84c15f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af62646250c3a1f63f6ea3a522ef98600221e99c084e62121eac547b7a84c15f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af62646250c3a1f63f6ea3a522ef98600221e99c084e62121eac547b7a84c15f", kill_on_drop: false }`
[INFO] [stdout] af62646250c3a1f63f6ea3a522ef98600221e99c084e62121eac547b7a84c15f
[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" "+031b389f0c31c0f91c9464d26313ae513dbe8d36" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66bbd308faaa1bed6feea83de5caae825641abd35870725f4aa6abe9cb4473a6
[INFO] running `Command { std: "docker" "start" "-a" "66bbd308faaa1bed6feea83de5caae825641abd35870725f4aa6abe9cb4473a6", kill_on_drop: false }`
[INFO] [stderr]     Checking cove v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `NonZeroI128`, `NonZeroI16`, `NonZeroI64`, `NonZeroI8`, `NonZeroIsize`, `NonZeroU128`, `NonZeroU32`, `NonZeroU64`, `NonZeroUsize`
[INFO] [stdout]  --> tests/nonzero.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 |     NonZeroU8, NonZeroU16, NonZeroU32, NonZeroU64, NonZeroU128, NonZeroUsize,
[INFO] [stdout]   |                            ^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 5 |     NonZeroI8, NonZeroI16, NonZeroI32, NonZeroI64, NonZeroI128, NonZeroIsize
[INFO] [stdout]   |     ^^^^^^^^^  ^^^^^^^^^^              ^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "66bbd308faaa1bed6feea83de5caae825641abd35870725f4aa6abe9cb4473a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66bbd308faaa1bed6feea83de5caae825641abd35870725f4aa6abe9cb4473a6", kill_on_drop: false }`
[INFO] [stdout] 66bbd308faaa1bed6feea83de5caae825641abd35870725f4aa6abe9cb4473a6