[INFO] fetching crate base64-serde 0.7.0...
[INFO] checking base64-serde-0.7.0 against master#d255c6a57c393db6221b1ff700daea478436f1cd for pr-122317
[INFO] extracting crate base64-serde 0.7.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate base64-serde 0.7.0 on toolchain d255c6a57c393db6221b1ff700daea478436f1cd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d255c6a57c393db6221b1ff700daea478436f1cd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate base64-serde 0.7.0
[INFO] finished tweaking crates.io crate base64-serde 0.7.0
[INFO] tweaked toml for crates.io crate base64-serde 0.7.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d255c6a57c393db6221b1ff700daea478436f1cd" "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" "+d255c6a57c393db6221b1ff700daea478436f1cd" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d255c6a57c393db6221b1ff700daea478436f1cd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f803a7495e2c0eb2614039d9d9eccf3f6e8b239500ed68772244312037570ebd
[INFO] running `Command { std: "docker" "start" "-a" "f803a7495e2c0eb2614039d9d9eccf3f6e8b239500ed68772244312037570ebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f803a7495e2c0eb2614039d9d9eccf3f6e8b239500ed68772244312037570ebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f803a7495e2c0eb2614039d9d9eccf3f6e8b239500ed68772244312037570ebd", kill_on_drop: false }`
[INFO] [stdout] f803a7495e2c0eb2614039d9d9eccf3f6e8b239500ed68772244312037570ebd
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d255c6a57c393db6221b1ff700daea478436f1cd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7cd0889839f88e1a8d9ea0302d449fa8d73e79196d4727a6484f3bdf6b72224
[INFO] running `Command { std: "docker" "start" "-a" "c7cd0889839f88e1a8d9ea0302d449fa8d73e79196d4727a6484f3bdf6b72224", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.114
[INFO] [stderr]     Checking base64-serde v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.59s
[INFO] running `Command { std: "docker" "inspect" "c7cd0889839f88e1a8d9ea0302d449fa8d73e79196d4727a6484f3bdf6b72224", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7cd0889839f88e1a8d9ea0302d449fa8d73e79196d4727a6484f3bdf6b72224", kill_on_drop: false }`
[INFO] [stdout] c7cd0889839f88e1a8d9ea0302d449fa8d73e79196d4727a6484f3bdf6b72224
[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 base64-serde-0.7.0 against try#1f7553361c08f8eafdc645e09215667278ab86f4 for pr-122317
[INFO] extracting crate base64-serde 0.7.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate base64-serde 0.7.0 on toolchain 1f7553361c08f8eafdc645e09215667278ab86f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7553361c08f8eafdc645e09215667278ab86f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate base64-serde 0.7.0
[INFO] finished tweaking crates.io crate base64-serde 0.7.0
[INFO] tweaked toml for crates.io crate base64-serde 0.7.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7553361c08f8eafdc645e09215667278ab86f4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+1f7553361c08f8eafdc645e09215667278ab86f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1f7553361c08f8eafdc645e09215667278ab86f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e46cda006ea3860e8b57dece54e8febd68568f9fe73259e03a92f2d4f4ee7f46
[INFO] running `Command { std: "docker" "start" "-a" "e46cda006ea3860e8b57dece54e8febd68568f9fe73259e03a92f2d4f4ee7f46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e46cda006ea3860e8b57dece54e8febd68568f9fe73259e03a92f2d4f4ee7f46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e46cda006ea3860e8b57dece54e8febd68568f9fe73259e03a92f2d4f4ee7f46", kill_on_drop: false }`
[INFO] [stdout] e46cda006ea3860e8b57dece54e8febd68568f9fe73259e03a92f2d4f4ee7f46
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1f7553361c08f8eafdc645e09215667278ab86f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef724369a49e096956118957ba938c0a605786937d2d792fa813b4d658d1214d
[INFO] running `Command { std: "docker" "start" "-a" "ef724369a49e096956118957ba938c0a605786937d2d792fa813b4d658d1214d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.114
[INFO] [stderr]     Checking base64-serde v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.49s
[INFO] running `Command { std: "docker" "inspect" "ef724369a49e096956118957ba938c0a605786937d2d792fa813b4d658d1214d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef724369a49e096956118957ba938c0a605786937d2d792fa813b4d658d1214d", kill_on_drop: false }`
[INFO] [stdout] ef724369a49e096956118957ba938c0a605786937d2d792fa813b4d658d1214d