[INFO] fetching crate libracore 0.0.0...
[INFO] checking libracore-0.0.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate libracore 0.0.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate libracore 0.0.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libracore 0.0.0
[INFO] finished tweaking crates.io crate libracore 0.0.0
[INFO] tweaked toml for crates.io crate libracore 0.0.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 13532086e62a4caa8e06bb4de3e7e749177a3d0cc36149217a88a5e5fc42b508
[INFO] running `Command { std: "docker" "start" "-a" "13532086e62a4caa8e06bb4de3e7e749177a3d0cc36149217a88a5e5fc42b508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13532086e62a4caa8e06bb4de3e7e749177a3d0cc36149217a88a5e5fc42b508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13532086e62a4caa8e06bb4de3e7e749177a3d0cc36149217a88a5e5fc42b508", kill_on_drop: false }`
[INFO] [stdout] 13532086e62a4caa8e06bb4de3e7e749177a3d0cc36149217a88a5e5fc42b508
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a1866c20a6711c5f38805962a65646391a7ff36625ec3d737142ef59c01f0cb
[INFO] running `Command { std: "docker" "start" "-a" "7a1866c20a6711c5f38805962a65646391a7ff36625ec3d737142ef59c01f0cb", kill_on_drop: false }`
[INFO] [stderr]     Checking libracore v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "7a1866c20a6711c5f38805962a65646391a7ff36625ec3d737142ef59c01f0cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a1866c20a6711c5f38805962a65646391a7ff36625ec3d737142ef59c01f0cb", kill_on_drop: false }`
[INFO] [stdout] 7a1866c20a6711c5f38805962a65646391a7ff36625ec3d737142ef59c01f0cb