[INFO] fetching crate if-let-return 0.1.1...
[INFO] checking if-let-return-0.1.1 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate if-let-return 0.1.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate if-let-return 0.1.1 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate if-let-return 0.1.1
[INFO] finished tweaking crates.io crate if-let-return 0.1.1
[INFO] tweaked toml for crates.io crate if-let-return 0.1.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0aae8e5511379d4dd62de8783f42327280347ebdc4caec9445b8c16812496b9f
[INFO] running `Command { std: "docker" "start" "-a" "0aae8e5511379d4dd62de8783f42327280347ebdc4caec9445b8c16812496b9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0aae8e5511379d4dd62de8783f42327280347ebdc4caec9445b8c16812496b9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0aae8e5511379d4dd62de8783f42327280347ebdc4caec9445b8c16812496b9f", kill_on_drop: false }`
[INFO] [stdout] 0aae8e5511379d4dd62de8783f42327280347ebdc4caec9445b8c16812496b9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aee058d6baa8e144f09faff9ac45b2ade107f82a2e4d284c0811146768ec3ce0
[INFO] running `Command { std: "docker" "start" "-a" "aee058d6baa8e144f09faff9ac45b2ade107f82a2e4d284c0811146768ec3ce0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking if-let-return v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.22s
[INFO] running `Command { std: "docker" "inspect" "aee058d6baa8e144f09faff9ac45b2ade107f82a2e4d284c0811146768ec3ce0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aee058d6baa8e144f09faff9ac45b2ade107f82a2e4d284c0811146768ec3ce0", kill_on_drop: false }`
[INFO] [stdout] aee058d6baa8e144f09faff9ac45b2ade107f82a2e4d284c0811146768ec3ce0