[INFO] fetching crate rbsnrust 0.1.0...
[INFO] documenting rbsnrust-0.1.0 against nightly for scrape-examples
[INFO] extracting crate rbsnrust 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rbsnrust 0.1.0 on toolchain nightly
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rbsnrust 0.1.0
[INFO] finished tweaking crates.io crate rbsnrust 0.1.0
[INFO] tweaked toml for crates.io crate rbsnrust 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded robson_compiler v0.1.5
[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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e95790e8382ef3c983b931fb2164e531a6f57b951eca573f052579e84af571b9
[INFO] running `Command { std: "docker" "start" "-a" "e95790e8382ef3c983b931fb2164e531a6f57b951eca573f052579e84af571b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e95790e8382ef3c983b931fb2164e531a6f57b951eca573f052579e84af571b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e95790e8382ef3c983b931fb2164e531a6f57b951eca573f052579e84af571b9", kill_on_drop: false }`
[INFO] [stdout] e95790e8382ef3c983b931fb2164e531a6f57b951eca573f052579e84af571b9
[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" "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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3cc53a078b670b5205a1c557e3a7ef2a715c1ae1023334efafa5d7854ed0d5a2
[INFO] running `Command { std: "docker" "start" "-a" "3cc53a078b670b5205a1c557e3a7ef2a715c1ae1023334efafa5d7854ed0d5a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.150
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling serde v1.0.150
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.23.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking robson_compiler v0.1.5
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling rbsnrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `rbsnrust v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rbsnrust-61f8d38d144eebab/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Configuration error
[INFO] [stderr]   ===> Couldnt open "/opt/rustwide/robson.toml"
[INFO] [stderr] 
[INFO] [stderr]   No such file or directory (os error 2)
[INFO] running `Command { std: "docker" "inspect" "3cc53a078b670b5205a1c557e3a7ef2a715c1ae1023334efafa5d7854ed0d5a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cc53a078b670b5205a1c557e3a7ef2a715c1ae1023334efafa5d7854ed0d5a2", kill_on_drop: false }`
[INFO] [stdout] 3cc53a078b670b5205a1c557e3a7ef2a715c1ae1023334efafa5d7854ed0d5a2