[INFO] fetching crate ringbuf 0.3.0-rc.0...
[INFO] checking ringbuf-0.3.0-rc.0 against try#d76952bc2a74b981479554f7e1e2c6f8a8c3e3bf for pr-100046
[INFO] extracting crate ringbuf 0.3.0-rc.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate ringbuf 0.3.0-rc.0 on toolchain d76952bc2a74b981479554f7e1e2c6f8a8c3e3bf
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d76952bc2a74b981479554f7e1e2c6f8a8c3e3bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ringbuf 0.3.0-rc.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ringbuf 0.3.0-rc.0
[INFO] tweaked toml for crates.io crate ringbuf 0.3.0-rc.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate ringbuf 0.3.0-rc.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d76952bc2a74b981479554f7e1e2c6f8a8c3e3bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+d76952bc2a74b981479554f7e1e2c6f8a8c3e3bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8438e95dbdd41ff5264b7ed97d9526b9d2f2644867fb8c579903b7dbfee190ad
[INFO] running `Command { std: "docker" "start" "-a" "8438e95dbdd41ff5264b7ed97d9526b9d2f2644867fb8c579903b7dbfee190ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8438e95dbdd41ff5264b7ed97d9526b9d2f2644867fb8c579903b7dbfee190ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8438e95dbdd41ff5264b7ed97d9526b9d2f2644867fb8c579903b7dbfee190ad", kill_on_drop: false }`
[INFO] [stdout] 8438e95dbdd41ff5264b7ed97d9526b9d2f2644867fb8c579903b7dbfee190ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+d76952bc2a74b981479554f7e1e2c6f8a8c3e3bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37eaedcf39e11418f66c51d5e88fa932b2bae1863f92eba377fe47ec5c677edc
[INFO] running `Command { std: "docker" "start" "-a" "37eaedcf39e11418f66c51d5e88fa932b2bae1863f92eba377fe47ec5c677edc", kill_on_drop: false }`
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]     Checking ringbuf v0.3.0-rc.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "37eaedcf39e11418f66c51d5e88fa932b2bae1863f92eba377fe47ec5c677edc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37eaedcf39e11418f66c51d5e88fa932b2bae1863f92eba377fe47ec5c677edc", kill_on_drop: false }`
[INFO] [stdout] 37eaedcf39e11418f66c51d5e88fa932b2bae1863f92eba377fe47ec5c677edc