[INFO] fetching crate downcast 0.11.0...
[INFO] checking downcast-0.11.0 against try#306c6aded24f02440063be828ebe601fe5eb8323 for pr-133502-3
[INFO] extracting crate downcast 0.11.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate downcast 0.11.0 on toolchain 306c6aded24f02440063be828ebe601fe5eb8323
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate downcast 0.11.0
[INFO] finished tweaking crates.io crate downcast 0.11.0
[INFO] tweaked toml for crates.io crate downcast 0.11.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate downcast 0.11.0 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" "+306c6aded24f02440063be828ebe601fe5eb8323" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d388e2c8fa7ba6aa3055a141a86464d74efd9d9c5020131f06f0601e892f958f
[INFO] running `Command { std: "docker" "start" "-a" "d388e2c8fa7ba6aa3055a141a86464d74efd9d9c5020131f06f0601e892f958f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d388e2c8fa7ba6aa3055a141a86464d74efd9d9c5020131f06f0601e892f958f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d388e2c8fa7ba6aa3055a141a86464d74efd9d9c5020131f06f0601e892f958f", kill_on_drop: false }`
[INFO] [stdout] d388e2c8fa7ba6aa3055a141a86464d74efd9d9c5020131f06f0601e892f958f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a5ec0608cefd5a4c6418ce3aaca045c9f653cf9826d52690f44fa44eb6b9022
[INFO] running `Command { std: "docker" "start" "-a" "8a5ec0608cefd5a4c6418ce3aaca045c9f653cf9826d52690f44fa44eb6b9022", kill_on_drop: false }`
[INFO] [stderr]     Checking downcast v0.11.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "8a5ec0608cefd5a4c6418ce3aaca045c9f653cf9826d52690f44fa44eb6b9022", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a5ec0608cefd5a4c6418ce3aaca045c9f653cf9826d52690f44fa44eb6b9022", kill_on_drop: false }`
[INFO] [stdout] 8a5ec0608cefd5a4c6418ce3aaca045c9f653cf9826d52690f44fa44eb6b9022