[INFO] fetching crate polar-prost 0.1.0...
[INFO] checking polar-prost-0.1.0 against master#39d8d3ab6a880179ef12b5d11414d940711ed422 for pr-87316
[INFO] extracting crate polar-prost 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate polar-prost 0.1.0 on toolchain 39d8d3ab6a880179ef12b5d11414d940711ed422
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39d8d3ab6a880179ef12b5d11414d940711ed422" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polar-prost 0.1.0
[INFO] finished tweaking crates.io crate polar-prost 0.1.0
[INFO] tweaked toml for crates.io crate polar-prost 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39d8d3ab6a880179ef12b5d11414d940711ed422" "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" "+39d8d3ab6a880179ef12b5d11414d940711ed422" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+39d8d3ab6a880179ef12b5d11414d940711ed422" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01bfa6bc632a5d260c2f64e5c12f1e8d14501c51a2a5ce42c8d52e2996c08b56
[INFO] running `Command { std: "docker" "start" "-a" "01bfa6bc632a5d260c2f64e5c12f1e8d14501c51a2a5ce42c8d52e2996c08b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01bfa6bc632a5d260c2f64e5c12f1e8d14501c51a2a5ce42c8d52e2996c08b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01bfa6bc632a5d260c2f64e5c12f1e8d14501c51a2a5ce42c8d52e2996c08b56", kill_on_drop: false }`
[INFO] [stdout] 01bfa6bc632a5d260c2f64e5c12f1e8d14501c51a2a5ce42c8d52e2996c08b56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+39d8d3ab6a880179ef12b5d11414d940711ed422" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9b055e21117d057bb997f80e7fa401701d360ecfcdf1cf3c04d6c6552522418
[INFO] running `Command { std: "docker" "start" "-a" "e9b055e21117d057bb997f80e7fa401701d360ecfcdf1cf3c04d6c6552522418", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling polar-prost v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling object v0.26.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling addr2line v0.16.0
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling prost-derive v0.5.0
[INFO] [stderr]     Checking prost v0.5.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.01s
[INFO] running `Command { std: "docker" "inspect" "e9b055e21117d057bb997f80e7fa401701d360ecfcdf1cf3c04d6c6552522418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9b055e21117d057bb997f80e7fa401701d360ecfcdf1cf3c04d6c6552522418", kill_on_drop: false }`
[INFO] [stdout] e9b055e21117d057bb997f80e7fa401701d360ecfcdf1cf3c04d6c6552522418