[INFO] fetching crate ringbuf 0.2.6...
[INFO] checking ringbuf-0.2.6 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate ringbuf 0.2.6 into /workspace/builds/worker-57/source
[INFO] validating manifest of crates.io crate ringbuf 0.2.6 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ringbuf 0.2.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ringbuf 0.2.6
[INFO] tweaked toml for crates.io crate ringbuf 0.2.6 written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] crate crates.io crate ringbuf 0.2.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25a5cc2c62b54257e9e26be11d4ec97544353a81c6f7444a0e908707cf20e802
[INFO] running `Command { std: "docker" "start" "-a" "25a5cc2c62b54257e9e26be11d4ec97544353a81c6f7444a0e908707cf20e802", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25a5cc2c62b54257e9e26be11d4ec97544353a81c6f7444a0e908707cf20e802", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25a5cc2c62b54257e9e26be11d4ec97544353a81c6f7444a0e908707cf20e802", kill_on_drop: false }`
[INFO] [stdout] 25a5cc2c62b54257e9e26be11d4ec97544353a81c6f7444a0e908707cf20e802
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d6b8c703dcecd2139d69c32ab7b15e09f644cbe31330e1087de6c50ae57bb96
[INFO] running `Command { std: "docker" "start" "-a" "3d6b8c703dcecd2139d69c32ab7b15e09f644cbe31330e1087de6c50ae57bb96", kill_on_drop: false }`
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking ringbuf v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "3d6b8c703dcecd2139d69c32ab7b15e09f644cbe31330e1087de6c50ae57bb96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d6b8c703dcecd2139d69c32ab7b15e09f644cbe31330e1087de6c50ae57bb96", kill_on_drop: false }`
[INFO] [stdout] 3d6b8c703dcecd2139d69c32ab7b15e09f644cbe31330e1087de6c50ae57bb96