[INFO] cloning repository https://github.com/2over12/rure
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/2over12/rure" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F2over12%2Frure", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F2over12%2Frure'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c0864e32d5a87a5d067c8340ba2c9dceb65bc56
[INFO] documenting 2over12/rure against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F2over12%2Frure" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/2over12/rure on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/2over12/rure
[INFO] finished tweaking git repo https://github.com/2over12/rure
[INFO] tweaked toml for git repo https://github.com/2over12/rure written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/2over12/rure already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getopts v0.2.18
[INFO] [stderr]   Downloaded tester v0.5.0
[INFO] [stderr]   Downloaded socket2 v0.3.8
[INFO] [stderr]   Downloaded filetime v0.2.4
[INFO] [stderr]   Downloaded error-chain v0.12.0
[INFO] [stderr]   Downloaded text_io v0.1.7
[INFO] [stderr]   Downloaded backtrace v0.3.14
[INFO] [stderr]   Downloaded compiletest_rs v0.3.19
[INFO] [stderr]   Downloaded rustfix v0.4.4
[INFO] [stderr]   Downloaded rsmt2 v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5e3fac041dd41c85ac8b123cd185315fc44366c6af21e1e2b6c93582c95620e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a5e3fac041dd41c85ac8b123cd185315fc44366c6af21e1e2b6c93582c95620e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5e3fac041dd41c85ac8b123cd185315fc44366c6af21e1e2b6c93582c95620e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5e3fac041dd41c85ac8b123cd185315fc44366c6af21e1e2b6c93582c95620e", kill_on_drop: false }`
[INFO] [stdout] a5e3fac041dd41c85ac8b123cd185315fc44366c6af21e1e2b6c93582c95620e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ea44c56bc5e96555f960e1bb868d1c9542db5b98c77795a15e8aed8eb6a04bf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1ea44c56bc5e96555f960e1bb868d1c9542db5b98c77795a15e8aed8eb6a04bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.31
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]     Checking text_io v0.1.7
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking rsmt2 v0.10.0
[INFO] [stderr]  Documenting rure v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `rustc_driver`
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate rustc_driver;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `rure`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name rure src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern rsmt2=/opt/rustwide/target/debug/deps/librsmt2-f7c06ac1adfab20c.rmeta --extern text_io=/opt/rustwide/target/debug/deps/libtext_io-a2227f1dc5a8198b.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "1ea44c56bc5e96555f960e1bb868d1c9542db5b98c77795a15e8aed8eb6a04bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ea44c56bc5e96555f960e1bb868d1c9542db5b98c77795a15e8aed8eb6a04bf", kill_on_drop: false }`
[INFO] [stdout] 1ea44c56bc5e96555f960e1bb868d1c9542db5b98c77795a15e8aed8eb6a04bf