[INFO] fetching crate slice_ring_buf 0.2.6...
[INFO] checking slice_ring_buf-0.2.6 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate slice_ring_buf 0.2.6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate slice_ring_buf 0.2.6 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 slice_ring_buf 0.2.6
[INFO] finished tweaking crates.io crate slice_ring_buf 0.2.6
[INFO] tweaked toml for crates.io crate slice_ring_buf 0.2.6 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] e36716c7519eb4fff4b26758c5215c467bb971f2d83e0b29170ed552123cf25a
[INFO] running `Command { std: "docker" "start" "-a" "e36716c7519eb4fff4b26758c5215c467bb971f2d83e0b29170ed552123cf25a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e36716c7519eb4fff4b26758c5215c467bb971f2d83e0b29170ed552123cf25a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e36716c7519eb4fff4b26758c5215c467bb971f2d83e0b29170ed552123cf25a", kill_on_drop: false }`
[INFO] [stdout] e36716c7519eb4fff4b26758c5215c467bb971f2d83e0b29170ed552123cf25a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 129f4660bcaeacab33835de9c05179cd0414430d6cb937435cc2bcc2752f7ab5
[INFO] running `Command { std: "docker" "start" "-a" "129f4660bcaeacab33835de9c05179cd0414430d6cb937435cc2bcc2752f7ab5", kill_on_drop: false }`
[INFO] [stderr]     Checking slice_ring_buf v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "129f4660bcaeacab33835de9c05179cd0414430d6cb937435cc2bcc2752f7ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "129f4660bcaeacab33835de9c05179cd0414430d6cb937435cc2bcc2752f7ab5", kill_on_drop: false }`
[INFO] [stdout] 129f4660bcaeacab33835de9c05179cd0414430d6cb937435cc2bcc2752f7ab5